mybatis与spring集成

                          1、Mybatisspring集成

                          2、Aop整合pagehelper插件

                           

                          Mybatisspring集成

                           

                          1、导入pom依赖

                            注:使用mybatis-generator插件,pom文件添加支持  

                           

                          <?xml version="1.0" encoding="UTF-8"?>
                          
                          <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                            xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
                            <modelVersion>4.0.0</modelVersion>
                          
                            <groupId>com.lingerqi</groupId>
                            <artifactId>mybatis</artifactId>
                            <version>1.0-SNAPSHOT</version>
                            <packaging>war</packaging>
                          
                            <name>mybatis Maven Webapp</name>
                            <!-- FIXME change it to the project‘s website -->
                            <url>http://www.example.com</url>
                            <properties>
                              <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
                              <maven.compiler.source>1.7</maven.compiler.source>
                              <maven.compiler.target>1.7</maven.compiler.target>
                              <maven.compiler.plugin.version>3.7.0</maven.compiler.plugin.version>
                          
                              <!--添加jar包依赖-->
                              <!--1.spring 5.0.2.RELEASE相关-->
                              <spring.version>5.0.2.RELEASE</spring.version>
                              <!--2.mybatis相关-->
                              <mybatis.version>3.4.5</mybatis.version>
                              <!--mysql-->
                              <mysql.version>5.1.44</mysql.version>
                              <!--pagehelper分页jar依赖-->
                              <pagehelper.version>5.1.2</pagehelper.version>
                              <!--mybatis与spring集成jar依赖-->
                              <mybatis.spring.version>1.3.1</mybatis.spring.version>
                              <!--3.dbcp2连接池相关 druid-->
                              <commons.dbcp2.version>2.1.1</commons.dbcp2.version>
                              <commons.pool2.version>2.4.3</commons.pool2.version>
                              <!--4.log日志相关-->
                              <log4j2.version>2.9.1</log4j2.version>
                              <!--5.其他-->
                              <junit.version>4.12</junit.version>
                              <servlet.version>4.0.0</servlet.version>
                              <lombok.version>1.18.2</lombok.version>
                            </properties>
                          
                            <dependencies>
                              <!--1.spring相关-->
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-core</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-beans</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-context</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-orm</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-tx</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-aspects</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-web</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                          
                              <dependency>
                                <groupId>org.springframework</groupId>
                                <artifactId>spring-test</artifactId>
                                <version>${spring.version}</version>
                              </dependency>
                          
                          
                              <!--2.mybatis相关-->
                              <dependency>
                                <groupId>org.mybatis</groupId>
                                <artifactId>mybatis</artifactId>
                                <version>${mybatis.version}</version>
                              </dependency>
                              <!--mysql-->
                              <dependency>
                                <groupId>mysql</groupId>
                                <artifactId>mysql-connector-java</artifactId>
                                <version>${mysql.version}</version>
                              </dependency>
                              <!--pagehelper分页插件jar包依赖-->
                              <dependency>
                                <groupId>com.github.pagehelper</groupId>
                                <artifactId>pagehelper</artifactId>
                                <version>${pagehelper.version}</version>
                              </dependency>
                              <!--mybatis与spring集成jar包依赖-->
                              <dependency>
                                <groupId>org.mybatis</groupId>
                                <artifactId>mybatis-spring</artifactId>
                                <version>${mybatis.spring.version}</version>
                              </dependency>
                              <!--3.dbcp2连接池相关-->
                              <dependency>
                                <groupId>org.apache.commons</groupId>
                                <artifactId>commons-dbcp2</artifactId>
                                <version>${commons.dbcp2.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.apache.commons</groupId>
                                <artifactId>commons-pool2</artifactId>
                                <version>${commons.pool2.version}</version>
                              </dependency>
                              <!--4.log日志相关依赖-->
                              <!--核心log4j2jar包-->
                              <dependency>
                                <groupId>org.apache.logging.log4j</groupId>
                                <artifactId>log4j-core</artifactId>
                                <version>${log4j2.version}</version>
                              </dependency>
                              <dependency>
                                <groupId>org.apache.logging.log4j</groupId>
                                <artifactId>log4j-api</artifactId>
                                <version>${log4j2.version}</version>
                              </dependency>
                              <!--web工程需要包含log4j-web,非web工程不需要-->
                              <dependency>
                                <groupId>org.apache.logging.log4j</groupId>
                                <artifactId>log4j-web</artifactId>
                                <version>${log4j2.version}</version>
                              </dependency>
                          
                              <!--5.其他-->
                              <dependency>
                                <groupId>junit</groupId>
                                <artifactId>junit</artifactId>
                                <version>${junit.version}</version>
                                <scope>test</scope>
                              </dependency>
                              <dependency>
                                <groupId>javax.servlet</groupId>
                                <artifactId>javax.servlet-api</artifactId>
                                <version>${servlet.version}</version>
                                <scope>provided</scope>
                              </dependency>
                              <dependency>
                                <groupId>org.projectlombok</groupId>
                                <artifactId>lombok</artifactId>
                                <version>${lombok.version}</version>
                                <scope>provided</scope>
                              </dependency>
                            </dependencies>
                          
                            <build>
                              <finalName>mybatis</finalName>
                              <resources>
                                <!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题-->
                                <resource>
                                  <directory>src/main/java</directory>
                                  <includes>
                                    <include>**/*.xml</include>
                                  </includes>
                                </resource>
                                <!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题-->
                                <resource>
                                  <directory>src/main/resources</directory>
                                  <includes>
                                    <include>jdbc.properties</include>
                                    <include>*.xml</include>
                                  </includes>
                                </resource>
                              </resources>
                          
                              <pluginManagement>
                                <plugins>
                                  <plugin>
                                    <groupId>org.apache.maven.plugins</groupId>
                                    <artifactId>maven-compiler-plugin</artifactId>
                                    <version>${maven.compiler.plugin.version}</version>
                                    <configuration>
                                      <source>${maven.compiler.source}</source>
                                      <target>${maven.compiler.target}</target>
                                      <encoding>${project.build.sourceEncoding}</encoding>
                                    </configuration>
                                  </plugin>
                                  <plugin>
                                    <groupId>org.mybatis.generator</groupId>
                                    <artifactId>mybatis-generator-maven-plugin</artifactId>
                                    <version>1.3.2</version>
                                    <dependencies>
                                      <!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 -->
                                      <dependency>
                                        <groupId>mysql</groupId>
                                        <artifactId>mysql-connector-java</artifactId>
                                        <version>${mysql.version}</version>
                                      </dependency>
                                    </dependencies>
                                    <configuration>
                                      <overwrite>true</overwrite>
                                    </configuration>
                                  </plugin>
                                </plugins>
                              </pluginManagement>
                          
                            </build>
                          </project>
                          

                           

                          2、利用mybatis逆向工程生成模型层层代码

                          generatorConfig.xml:

                           

                          <?xml version="1.0" encoding="UTF-8" ?>
                          <!DOCTYPE generatorConfiguration PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
                                  "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd" >
                          <generatorConfiguration>
                              <!-- 引入配置文件 -->
                              <properties resource="jdbc.properties"/>
                          
                              <!--指定数据库jdbc驱动jar包的位置-->
                          
                              <classPathEntry location="E:\\mvn\\mvn_repository\\mysql\\mysql-connector-java\\5.1.44\\mysql-connector-java-5.1.44.jar"/>
                          
                              <!-- 一个数据库一个context -->
                              <context id="infoGuardian">
                                  <!-- 注释 -->
                                  <commentGenerator>
                                      <property name="suppressAllComments" value="true"/><!-- 是否取消注释 -->
                                      <property name="suppressDate" value="true"/> <!-- 是否生成注释代时间戳 -->
                                  </commentGenerator>
                          
                                  <!-- jdbc连接 -->
                                  <jdbcConnection driverClass="${jdbc.driver}"
                                                  connectionURL="${jdbc.url}" userId="${jdbc.username}" password="${jdbc.password}"/>
                          
                                  <!-- 类型转换 -->
                                  <javaTypeResolver>
                                      <!-- 是否使用bigDecimal, false可自动转化以下类型(Long, Integer, Short, etc.) -->
                                      <property name="forceBigDecimals" value="false"/>
                                  </javaTypeResolver>
                          
                                  <!-- 01 指定javaBean生成的位置 -->
                                  <!-- targetPackage:指定生成的model生成所在的包名 -->
                                  <!-- targetProject:指定在该项目下所在的路径  -->
                                  <javaModelGenerator targetPackage="com.lingerqi.model"
                                                      targetProject="src/main/java">
                                      <!-- 是否允许子包,即targetPackage.schemaName.tableName -->
                                      <property name="enableSubPackages" value="false"/>
                                      <!-- 是否对model添加构造函数 -->
                                      <property name="constructorBased" value="true"/>
                                      <!-- 是否针对string类型的字段在set的时候进行trim调用 -->
                                      <property name="trimStrings" value="false"/>
                                      <!-- 建立的Model对象是否 不可改变  即生成的Model对象不会有 setter方法,只有构造方法 -->
                                      <property name="immutable" value="false"/>
                                  </javaModelGenerator>
                          
                                  <!-- 02 指定sql映射文件生成的位置 -->
                                  <sqlMapGenerator targetPackage="com.lingerqi.mapper"
                                                   targetProject="src/main/java">
                                      <!-- 是否允许子包,即targetPackage.schemaName.tableName -->
                                      <property name="enableSubPackages" value="false"/>
                                  </sqlMapGenerator>
                          
                                  <!-- 03 生成XxxMapper接口 -->
                                  <!-- type="ANNOTATEDMAPPER",生成Java Model 和基于注解的Mapper对象 -->
                                  <!-- type="MIXEDMAPPER",生成基于注解的Java Model 和相应的Mapper对象 -->
                                  <!-- type="XMLMAPPER",生成SQLMap XML文件和独立的Mapper接口 -->
                                  <javaClientGenerator targetPackage="com.lingerqi.mapper"
                                                       targetProject="src/main/java" type="XMLMAPPER">
                                      <!-- 是否在当前路径下新加一层schema,false路径com.oop.eksp.user.model, true:com.oop.eksp.user.model.[schemaName] -->
                                      <property name="enableSubPackages" value="false"/>
                                  </javaClientGenerator>
                          
                                  <!-- 配置表信息 -->
                                  <!-- schema即为数据库名 -->
                                  <!-- tableName为对应的数据库表 -->
                                  <!-- domainObjectName是要生成的实体类 -->
                                  <!-- enable*ByExample是否生成 example类 -->
                                  <!--<table schema="" tableName="t_book" domainObjectName="Book"-->
                                  <!--enableCountByExample="false" enableDeleteByExample="false"-->
                                  <!--enableSelectByExample="false" enableUpdateByExample="false">-->
                                  <!--<!– 忽略列,不生成bean 字段 –>-->
                                  <!--<!– <ignoreColumn column="FRED" /> –>-->
                                  <!--<!– 指定列的java数据类型 –>-->
                                  <!--<!– <columnOverride column="LONG_VARCHAR_FIELD" jdbcType="VARCHAR" /> –>-->
                                  <!--</table>-->
                          
                                  <table schema="" tableName="t_mvc_Book" domainObjectName="Book"
                                         enableCountByExample="false" enableDeleteByExample="false"
                                         enableSelectByExample="false" enableUpdateByExample="false">
                                  </table>
                          
                              </context>
                          </generatorConfiguration>
                          

                           

                            mybatis.cfg.xml:

                          <?xml version="1.0" encoding="UTF-8"?>
                          <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
                          <configuration>
                              <!-- 引入外部配置文件 -->
                              <properties resource="jdbc.properties"/>
                          
                          
                              <settings>
                                  <setting name="logImpl" value="LOG4J2"/>
                              </settings>
                          
                          
                              <!-- 别名 -->
                              <typeAliases>
                                  <!--<typeAlias type="com.lingerqi.oa.model.Book" alias="Book"/>-->
                              </typeAliases>
                          
                              <plugins>
                                  <!-- 配置分页插件PageHelper, 4.0.0以后的版本支持自动识别使用的数据库 -->
                                  <plugin interceptor="com.github.pagehelper.PageInterceptor">
                                  </plugin>
                              </plugins>
                              <!-- 配置mybatis运行环境 -->
                              <environments default="development">
                                  <environment id="development">
                                      <!-- type="JDBC" 代表使用JDBC的提交和回滚来管理事务 -->
                                      <transactionManager type="jdbc"/>
                          
                                      <!-- mybatis提供了3种数据源类型,分别是:POOLED,UNPOOLED,JNDI -->
                                      <!-- POOLED 表示支持JDBC数据源连接池 -->
                                      <!-- UNPOOLED 表示不支持数据源连接池 -->
                                      <!-- JNDI 表示支持外部数据源连接池 -->
                                      <dataSource type="POOLED">
                                          <property name="driver"
                                                    value="${jdbc.driver}"/>
                                          <property name="url"
                                                    value="${jdbc.url}"/>
                                          <property name="username" value="${jdbc.username}"/>
                                          <property name="password" value="${jdbc.password}"/>
                                      </dataSource>
                                  </environment>
                              </environments>
                          
                          
                              <mappers>
                                  <mapper resource="com/lingerqi/mapper/BookMapper.xml"/>
                              </mappers>
                          </configuration>
                          

                            

                          3、编写配置文件applicationContext-mybatis.xml

                          <?xml version="1.0" encoding="UTF-8"?>
                          <beans xmlns="http://www.springframework.org/schema/beans"
                                 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                                 xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
                                 xmlns:aop="http://www.springframework.org/schema/aop"
                                 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
                              <!--1. 注解式开发 -->
                              <!-- 注解驱动 -->
                              <context:annotation-config/>
                              <!-- 用注解方式注入bean,并指定查找范围:com.lingerqi及子子孙孙包-->
                              <context:component-scan base-package="com.lingerqi"/>
                          
                              <context:property-placeholder location="classpath:jdbc.properties"/>
                          
                              <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
                                    destroy-method="close">
                                  <property name="driverClassName" value="${jdbc.driver}"/>
                                  <property name="url" value="${jdbc.url}"/>
                                  <property name="username" value="${jdbc.username}"/>
                                  <property name="password" value="${jdbc.password}"/>
                                  <!--初始连接数-->
                                  <property name="initialSize" value="10"/>
                                  <!--最大活动连接数-->
                                  <property name="maxTotal" value="100"/>
                                  <!--最大空闲连接数-->
                                  <property name="maxIdle" value="50"/>
                                  <!--最小空闲连接数-->
                                  <property name="minIdle" value="10"/>
                                  <!--设置为-1时,如果没有可用连接,连接池会一直无限期等待,直到获取到连接为止。-->
                                  <!--如果设置为N(毫秒),则连接池会等待N毫秒,等待不到,则抛出异常-->
                                  <property name="maxWaitMillis" value="-1"/>
                              </bean>
                          
                              <!--4. spring和MyBatis整合 -->
                              <!--1) 创建sqlSessionFactory-->
                              <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
                                  <!-- 指定数据源 -->
                                  <property name="dataSource" ref="dataSource"/>
                                  <!-- 自动扫描XxxMapping.xml文件,**任意路径 -->
                                  <property name="mapperLocations" value="classpath*:com/lingerqi/**/mapper/*.xml"/>
                                  <!-- 指定别名 -->
                                  <property name="typeAliasesPackage" value="com/lingerqi/**/model"/>
                                  <!--配置pagehelper插件-->
                                  <property name="plugins">
                                      <array>
                                          <bean class="com.github.pagehelper.PageInterceptor">
                                              <property name="properties">
                                                  <value>
                                                      helperDialect=mysql
                                                  </value>
                                              </property>
                                          </bean>
                                      </array>
                                  </property>
                              </bean>
                          
                              <!--2) 自动扫描com/lingerqi/ssm/**/mapper下的所有XxxMapper接口(其实就是DAO接口),并实现这些接口,-->
                              <!--   即可直接在程序中使用dao接口,不用再获取sqlsession对象-->
                              <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
                                  <!--basePackage 属性是映射器接口文件的包路径。-->
                                  <!--你可以使用分号或逗号 作为分隔符设置多于一个的包路径-->
                                  <property name="basePackage" value="com/lingerqi/**/mapper"/>
                                  <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
                              </bean>
                          
                              <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
                                  <property name="dataSource" ref="dataSource" />
                              </bean>
                              <tx:annotation-driven transaction-manager="transactionManager" />
                              <aop:aspectj-autoproxy/>
                          </beans>

                          4、Spring Test+junit组合

                           

                          1、在工程的pom文件中增加spring-test的依赖

                           

                               <dependency>
                          
                          
                                 <groupId>org.springframework</groupId>
                          
                          
                                 <artifactId>spring-test</artifactId>
                          
                          
                                 <version>${spring.version}</version>
                          
                          
                               </dependency>
                          

                           2、 创建BaseTestCase,并在该类上加上两个注解

                             @RunWith(SpringJUnit4ClassRunner.class)

                             @ContextConfiguration(locations={"classpath:applicationContext.xml"})

                          相关代码:

                          service层

                          package com.lingerqi.service;
                          
                          import com.lingerqi.model.Book;
                          import com.lingerqi.model.vo.Bookvo;
                          import com.lingerqi.util.PageBean;
                          import org.apache.ibatis.annotations.Param;
                          
                          import java.util.List;
                          import java.util.Map;
                          
                          /**
                           * @author xyls
                           * @create  2019-10-16 17:02
                           */
                          public interface BookService {
                              int deleteByPrimaryKey(Integer bid);
                          
                              int insert(Book record);
                          
                              int insertSelective(Book record);
                          
                              Book selectByPrimaryKey(Integer bid);
                          
                              int updateByPrimaryKeySelective(Book record);
                          
                              int updateByPrimaryKey(Book record);
                          
                              List<Book> selectBooksIn(List bookIds);
                          
                              /**
                               *
                               * @param bname
                               * @return
                               */
                              List<Book> selectBookLike1(@Param("bname") String bname);
                          
                              List<Book> selectBookLike2(@Param("bname") String bname);
                          
                              List<Book> selectBookLike3(@Param("bname") String bname);
                          
                              List<Book> list1();
                          
                              List<Book> list2();
                          
                              List<Book> list3(Bookvo bookvo);
                          
                              List<Map> lsit4(Map map);
                          
                              Map list5(Map map);
                              List<Map> listPager(Map map , PageBean PageBean);
                          
                              List<Book> list6(Bookvo bookvo);
                          
                              List<Map> aaaa(Map map,PageBean pageBean);
                          }
                          

                            

                          package com.lingerqi.service;
                          
                          import com.github.pagehelper.PageHelper;
                          import com.github.pagehelper.PageInfo;
                          import com.lingerqi.mapper.BookMapper;
                          import com.lingerqi.model.Book;
                          import com.lingerqi.model.vo.Bookvo;
                          import com.lingerqi.util.PageBean;
                          import org.springframework.beans.factory.annotation.Autowired;
                          import org.springframework.stereotype.Service;
                          import org.springframework.transaction.annotation.Transactional;
                          
                          import java.util.List;
                          import java.util.Map;
                          
                          /**
                           * @author xyls
                           * @create  2019-10-16 17:04
                           */
                          @Service
                          public class BookServiceImpl implements BookService {
                          
                              @Autowired
                              private BookMapper bookMapper;
                              private List<Book> books;
                          
                          
                              @Override
                              public int deleteByPrimaryKey(Integer bid) {
                                  return bookMapper.deleteByPrimaryKey(bid);
                              }
                          
                              @Override
                              public int insert(Book record) {
                                  return bookMapper.insert(record);
                              }
                          
                              @Override
                              public int insertSelective(Book record) {
                                  return bookMapper.insertSelective(record);
                              }
                          
                              @Override
                              public Book selectByPrimaryKey(Integer bid) {
                                  return bookMapper.selectByPrimaryKey(bid);
                              }
                          
                              @Override
                              public int updateByPrimaryKeySelective(Book record) {
                                  return bookMapper.updateByPrimaryKeySelective(record);
                              }
                          
                              @Override
                              public int updateByPrimaryKey(Book record) {
                                  return bookMapper.updateByPrimaryKey(record);
                              }
                          
                              @Override
                              public List<Book> selectBooksIn(List bookIds) {
                                  return bookMapper.selectBooksIn(bookIds);
                              }
                          
                              @Override
                              public List<Book> selectBookLike1(String bname) {
                                  return books;
                              }
                          
                              @Override
                              public List<Book> selectBookLike2(String bname) {
                                  return bookMapper.selectBookLike2(bname);
                              }
                          
                              @Override
                              public List<Book> selectBookLike3(String bname) {
                                  return bookMapper.selectBookLike3(bname);
                              }
                          
                              @Override
                              public List<Book> list1() {
                                  return bookMapper.list1();
                              }
                          
                              @Override
                              public List<Book> list2() {
                                  return bookMapper.list2();
                              }
                          
                              @Override
                              public List<Book> list3(Bookvo bookvo) {
                                  return bookMapper.list3(bookvo);
                              }
                          
                          
                              @Override
                              public List<Map> lsit4(Map map) {
                                  return bookMapper.list4(map);
                              }
                          
                              @Override
                              public Map list5(Map map) {
                                  return bookMapper.list5(map);
                              }
                          
                              @Override
                              public List<Map> listPager(Map map, PageBean PageBean) {
                                  return bookMapper.aaaa(map);
                              }
                          
                              @Override
                              public List<Book> list6(Bookvo bookvo) {
                                  return bookMapper.list6(bookvo);
                              }
                          
                              @Override
                              public List<Map> aaaa(Map map, PageBean pageBean) {
                                  return bookMapper.aaaa(map);
                              }
                          
                          
                          }
                          

                            test:

                          */
                          public class BookServiceImplTest extends SpringBaseTest {
                              @Autowired
                              private BookService bookService;
                          
                              @Test
                              public void insert() {
                                  book.setBid(1261);
                                  book.setBname("不死不灭000001");
                                  book.setPrice(1f);
                                  this.bookService.insert(book);
                              }
                          
                              @Test
                              public void selectByPrimaryKey() {
                                  Book book = this.bookService.selectByPrimaryKey(1251);
                                  System.out.println(book);
                              }
                          

                            分享图片

                           

                           

                          Aop整合pagehelper插件

                           

                          注意:记得开动态代理

                           

                          使用AOP编程解决分页代码重复的问题

                             @Around("execution(* *..*Service.*pager(..))")

                             public Object invoke(ProceedingJoinPoint args)

                           

                          语法结构:execution(方法修饰符  方法返回值  方法所属类 匹配方法名 (  方法中的形参表 )  方法申明抛出的异常  )

                          "*"  :代表一个任意类型的参数;

                          ..”:代表零个或多个任意类型的参数。

                           

                          package com.lingerqi.pagerAspect;
                          
                          import com.github.pagehelper.PageHelper;
                          import com.github.pagehelper.PageInfo;
                          import com.lingerqi.util.PageBean;
                          import org.aspectj.lang.ProceedingJoinPoint;
                          import org.aspectj.lang.annotation.Around;
                          import org.aspectj.lang.annotation.Aspect;
                          import org.springframework.stereotype.Component;
                          
                          import java.util.List;
                          
                          /**
                           * @author xyls
                           * @create  2019-10-18 21:09
                           */
                          @Component
                          @Aspect
                          public class PagerAspect {
                              @Around("execution(* *..*Service.*Pager(..))")
                              public Object invoke(ProceedingJoinPoint args) throws Throwable {
                                  Object[] params = args.getArgs();
                                  PageBean pageBean = null;
                                  for (Object param : params) {
                                      if (param instanceof PageBean) {
                                          pageBean = (PageBean) param;
                                          break;
                                      }
                                  }
                                  if (pageBean!=null&&pageBean.isPagination()){
                                      PageHelper.startPage(pageBean.getPage(),pageBean.getRows());
                          
                                  }
                                  Object list = args.proceed(params);
                          
                                  if (pageBean!=null&&pageBean.isPagination()){
                                      PageInfo pageInfo=new PageInfo((List) list);
                                     pageBean.setTotal(pageInfo.getTotal()+"");
                          
                                  }
                                  return list;
                              }
                          }

                          测试代码

                          Mapper

                           

                          BookMapper.xml

                           <select id="listPager" resultType="java.util.Map" parameterType="java.util.Map">
                                  select * from t_mvc_book where bname like  #{bname}
                              </select>

                          Service

                           

                             List<Map> listPager(Map map , PageBean PageBean);
                          

                           

                            

                           

                          impl

                           

                              @Override
                              public List<Map> listPager(Map map, PageBean PageBean) {
                                  return bookMapper.aaaa(map);
                              }

                          BookServiceImplTest.java

                              @Test
                              public void listpager() {
                                  Map map=new HashMap();
                                  map.put("bname", StringUtils.toLikeStr("天"));
                          //        pageBean.setPage(1);
                                  List<Map> lll = this.bookService.listPager(map, pageBean);
                                  for (Map map1 : lll) {
                                      System.out.println(map1);
                                  }
                              }
                          

                            

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