spring和mybatis plus集成

加入依赖：

<?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.mp</groupId>
  <artifactId>mpspring</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>


  <name>mpspring 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>
    <mybatisplus.version>3.2.0</mybatisplus.version>
    <spring.version>4.3.24.RELEASE</spring.version>
    <mysql.version>8.0.17</mysql.version>
    <!-- 注意只能使用2.0以下的版本 -->
    <log4j.version>1.2.17</log4j.version>
    <lombok.version>1.18.8</lombok.version>
  </properties>


  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>






    <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>${lombok.version}</version>
      <scope>provided</scope>
    </dependency>


    <!-- 引入spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</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-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>


    <!-- mysql数据库驱动 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>
    <!-- log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>${log4j.version}</version>
    </dependency>




    <!-- 引入mp -->
    <dependency>
      <groupId>com.baomidou</groupId>
      <artifactId>mybatis-plus</artifactId>
      <version>${mybatisplus.version}</version>
    </dependency>
  </dependencies>


  <build>
    <finalName>mpspring</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

创建User

package mpspring.domain;


import com.baomidou.mybatisplus.annotation.TableName;
import lombok.*;


import java.io.Serializable;
import java.util.Date;


@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
@TableName("user")//建立User.class和user表的一种关系
public class User implements Serializable {
    private Integer id;
    private String name;
    private String address;
    private Date birth;
}

创建mapper

package mpspring.mapper;


import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import mpspring.domain.User;


public interface UserMapper extends BaseMapper<User> {


}

创建dao

<?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:aop="http://www.springframework.org/schema/aop"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:tx="http://www.springframework.org/schema/tx"
   xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
      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/aop http://www.springframework.org/schema/aop/spring-aop.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
   <!-- dao层的配置：核心是要产生 Mapper代理类对象 1.引入数据库配置信息 2.数据源配置 3.SqlSessionFactory
      4.产生Mapper接口的代理类对象 -->
   <!-- 1.引入数据库配置信息 -->
   <context:property-placeholder
      location="classpath:db.properties" system-properties-mode="FALLBACK" />
   <!--2.数据源配置 -->
   <bean id="dataSource"
      class="org.springframework.jdbc.datasource.DriverManagerDataSource">
      <property name="driverClassName" value="${driver}"></property>
      <property name="url" value="${url}"></property>
      <property name="username" value="${user}"></property>
      <property name="password" value="${password}"></property>
   </bean>


   <!-- 3.SqlSessionFactory -->
   <bean id="sqlSessionFactory"
      class="com.baomidou.mybatisplus.extension.spring.MybatisSqlSessionFactoryBean">
      <property name="dataSource" ref="dataSource"></property>
      
      <property name="globalConfig" ref="globalConfig"></property>
      <!-- 加载xxMapper.xml -->
      <property name="mapperLocations">
         <array>
            <value>classpath:mapper/*Mapper.xml</value>
         </array>
      </property>
      <!-- 配置分页插件 -->
      <property name="plugins">
         <array>
            <bean class="com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor">
            </bean>
         </array>
      </property>
   </bean>
   <!-- 声明全局配置 -->
   <bean id="globalConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig">
      <!-- 指定主键自动增长类型 -->
      <property name="dbConfig" ref="dbConfig"></property>
   </bean>
   <bean id="dbConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig.DbConfig">
      <property name="idType" value="AUTO"></property>
   </bean>
   
   <!-- 4.产生Mapper接口的代理类对象 -->
   <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      <!-- 需要生成代理类对象的mapper接口包 -->
      <property name="basePackage"
         value="mpspring.mapper"></property>
      <!-- sqlSessionFactory 的name 用于为代理类中生成SqlSession -->
      <property name="sqlSessionFactoryBeanName"
         value="sqlSessionFactory"></property>
   </bean>




</beans>

创建service

<?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:aop="http://www.springframework.org/schema/aop"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:mvc="http://www.springframework.org/schema/mvc"
   xmlns:tx="http://www.springframework.org/schema/tx"
   xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
      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/aop http://www.springframework.org/schema/aop/spring-aop.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
      <!-- 扫描service下面的包 -->
      <context:component-scan base-package="mpspring.service"></context:component-scan>


</beans>

创建applicationContext

<?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:mvc="http://www.springframework.org/schema/mvc"
   xmlns:task="http://www.springframework.org/schema/task"
   xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd
      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">
   
   <!-- 引入dao层的配置 -->
   <import resource="classpath:application-dao.xml"/>
   
</beans>

创建db.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/crm?useUnicode=true&characterEncoding=utf8&useSSL=true&serverTimezone=UTC
user=root
password=123456

创建log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# MyBatis logging configuration...
log4j.logger.org.mpspring.mapper=TRACE
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

增删改查测试

package mpspring;


import com.baomidou.mybatisplus.core.conditions.Wrapper;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import mpspring.domain.User;
import mpspring.mapper.UserMapper;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;


import java.io.Serializable;
import java.util.*;


public class TestApp {


    public static void main(String[] args) {


        ApplicationContext context=new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        UserMapper userMapper=context.getBean(UserMapper.class);
        userMapper.insert(new User(4,"XIAOMING","HUMEN",new Date()));
        updateUserMapper(userMapper);
        deleteUserMapper(userMapper);
        QueryUserMapper(userMapper);
        System.out.println("操作成功");
    }


    /**
     * 用户更新
     * @param userMapper
     */
    private static void QueryUserMapper(UserMapper userMapper) {
        String name="XIAOMING";
        Collection<Serializable> idList=new ArrayList<>();
        ((ArrayList<Serializable>) idList).add(10);
        ((ArrayList<Serializable>) idList).add(11);
        List<User> userList = userMapper.selectBatchIds(idList);
        for (User user : userList) {
            System.out.println(user.toString());
        }
        System.out.println("----------------------");
        Map<String, Object> map=new HashMap<>();
        map.put("address","HUMEN");


        List<User> users = userMapper.selectByMap(map);
        for (User user : users) {
            System.out.println(user);
        }
        System.out.println("__________查询所有_____________");
        Integer count = userMapper.selectCount(null);
        System.out.println("_____________条件查询所有——————————————————");
        QueryWrapper<User> queryWrapper=new QueryWrapper<>();
        queryWrapper.like(name!=null,"name",name);
        userMapper.selectCount(queryWrapper);
        System.out.println(count);
        System.out.println("---------------分页----------------");


        IPage<User> page=new Page<>(1,2);
        userMapper.selectPage(page, null);
        System.out.println("总条数："+page.getTotal());
        List<User>list=page.getRecords();
        for (User user : list) {
            System.out.println(user);
        }


    }


    /**
     * 删除用户
     * @param userMapper
     */
    private static void deleteUserMapper(UserMapper userMapper) {
        userMapper.deleteById(1);
        Collection<Serializable> idList=new ArrayList<>();
        ((ArrayList<Serializable>) idList).add(2);
        ((ArrayList<Serializable>) idList).add(3);
        userMapper.deleteBatchIds(idList);




        Map<String, Object> map=new HashMap<>();
        map.put("id","4");
        userMapper.deleteByMap(map);




        QueryWrapper<User>queryWrapper=new QueryWrapper<>();
        queryWrapper.between("id",5,6);
        userMapper.delete(queryWrapper);
    }


    /*


    *更新用户
     */
    private static void updateUserMapper(UserMapper userMapper) {
        userMapper.updateById(new User(4,"dangming","wuhan",new Date()));
        UpdateWrapper<User>updateWrapper=new UpdateWrapper<>();
        updateWrapper.between("id",1,5);


        userMapper.update(new User(4,"dangming","wuhan",new Date()),updateWrapper);
    }
}

spring和mybatis plus集成

注意点：分页插件注意点：  <property name="plugins"> <array> <bean class="com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor"> </bean> </array> </property>  <bean id="globalConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig">  <property name="dbConfig" ref="dbConfig"></property> </bean> <bean id="dbConfig" class="com.baomidou.mybatisplus.core.config.GlobalConfig.DbConfig"> <property name="idType" value="AUTO"></property> </bean>

spring和mybatis plus集成

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