[深圳|结业弟子]JAVA-陈东|2019年11月20日的日报-技能树.IT修真院

发表于： 2019-11-20 22:18:41

1 1116

今天完成的事情

完成spring与mybaits的整合curd

项目目录

POM.XML

<?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>
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
    <groupId>MyBaitsDemo</groupId>
    <artifactId>MyBaitsDemo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
    <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis-spring</artifactId>
        <version>1.3.0</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.1.3.RELEASE</version>
    </dependency>
    <!--spring集成Junit测试-->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>4.1.3.RELEASE</version>
        <scope>test</scope>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.1.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.3</version>
        </dependency>
        <dependency>
        <groupId>org.mybatis</groupId>
        <artifactId>mybatis</artifactId>
        <version>3.4.0</version>
    </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.5</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
</project>

USERDAO接口

USERDAO的Mapper文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- mapper:根标签，namespace：命名空间，随便写，一般保证命名空间唯一 -->
<mapper namespace="com.demo.mapper.UserDao">

    <!--使用别名-->
    <select id="queryUserById" resultType="com.demo.pojo.User">
      select
       user.id as id,
       user.username as userName,
       user.password as password,
       user.name as name,
       user.age as age,
       user.birthday as birthday,
       user.sex as sex,
       user.created as created,
       user.updated as updated
       from
            user
       where user.id = #{id};
   </select>

    <select id="queryUserAll" resultType="com.demo.pojo.User">
        select * from  user;
    </select>

    <!--插入数据-->
    <insert id="insertUser" parameterType="com.demo.pojo.User">
        INSERT INTO user (
        username,
        password,
        name,
        age,
        sex,
        birthday,
        created,
        updated
        )
        VALUES
        (
        #{userName},
        #{password},
        #{name},
        #{age},
        #{sex},
        #{birthday},
        now(),
        now()
        );
    </insert>

    <update id="updateUser" parameterType="com.demo.pojo.User">
        UPDATE user
        <trim prefix="set" suffixOverrides=",">
            <if test="userName!=null">username = #{userName},</if>
            <if test="password!=null">password = #{password},</if>
            <if test="name!=null">name = #{name},</if>
            <if test="age!=null">age = #{age},</if>
            <if test="sex!=null">sex = #{sex},</if>
            <if test="birthday!=null">birthday = #{birthday},</if>
            updated = now(),
        </trim>
        WHERE
        (id = #{id});
    </update>

    <delete id="deleteUser">
        delete from user where id=#{id}
    </delete>
</mapper>

实体类

spring的配置文件

<?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:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
     http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
     http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsdp ">
    <context:annotation-config/>
    <!-- 数据库连接池 -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url"
                  value="jdbc:mysql://localhost:3306/mytest?useUnicode=true&amp;characterEncoding=utf-8&amp;zeroDateTimeBehavior=convertToNull"/>
        <property name="username" value="root"/>
        <property name="password" value="admin"/>
    </bean>
    <bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="typeAliasesPackage" value="com.demo.pojo"/>
        <property name="dataSource" ref="dataSource"/>
        <property name="mapperLocations" value="classpath:com/demo/mapper/UserMapper.xml"/>
    </bean>
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.demo.mapper"/>
    </bean>
</beans>

测试类（spring整合junit）

import com.demo.mapper.UserDao;
import com.demo.pojo.User;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import java.sql.Date;
import java.util.List;

@RunWith(SpringJUnit4ClassRunner.class)//junit整合spring的测试
@ContextConfiguration("classpath:spring.xml")//加载核心配置文件，自动构建spring容器
public class UserDaoImplTest {
    @Autowired
    public UserDao userDao;
    @Test
    public void queryUserById() throws Exception {
        System.out.println(this.userDao.queryUserById("1"));
    }
    @Test
    public void queryUserAll() throws Exception {
        List<User> userList = this.userDao.queryUserAll();
        for (User user : userList) {
            System.out.println(user);
        }
    }
    @Test
    public void insertUser() throws Exception {
        User user = new User();
        user.setAge(16);
        user.setBirthday(new Date(2002-02-02));
        user.setName("大鹏");
        user.setPassword("123456");
        user.setSex("男");
        user.setUserName("evan");
        this.userDao.insertUser(user);

    }
    @Test
    public void updateUser() throws Exception{
        User user = new User();
        user.setBirthday(new Date(2002-02-02));
        user.setName("静鹏");
        user.setPassword("654321");
        user.setSex("男");
        user.setUserName("evanjin");
        user.setId("1");
        this.userDao.updateUser(user);
    }
    @Test
    public void deleteUser() throws Exception{
        this.userDao.deleteUser("4");
    }
}