idea使用mybatis写增删改查

Posted 2020-11-15 小猪会拱菜

　　idea应用mybatis写增删改查

　　　　entity层　　

private Integer id;
private String userCode;
private String userName;
private String userPassword;
private Integer gender;
private Date birthday;
private String phone;
private String address;
private Integer userRole;
private Integer createdBy;
private Date creationDate;
private Integer modifyBy;
private Date modifyDate;

public Integer getId() {
    return id;
}

public void setId(Integer id) {
    this.id = id;
}

public String getUserCode() {
    return userCode;
}

public void setUserCode(String userCode) {
    this.userCode = userCode;
}

public String getUserName() {
    return userName;
}

public void setUserName(String userName) {
    this.userName = userName;
}

public String getUserPassword() {
    return userPassword;
}

public void setUserPassword(String userPassword) {
    this.userPassword = userPassword;
}

public Integer getGender() {
    return gender;
}

public void setGender(Integer gender) {
    this.gender = gender;
}

public Date getBirthday() {
    return birthday;
}

public void setBirthday(Date birthday) {
    this.birthday = birthday;
}

public String getPhone() {
    return phone;
}

public void setPhone(String phone) {
    this.phone = phone;
}

public String getAddress() {
    return address;
}

public void setAddress(String address) {
    this.address = address;
}

public Integer getUserRole() {
    return userRole;
}

public void setUserRole(Integer userRole) {
    this.userRole = userRole;
}

public Integer getCreatedBy() {
    return createdBy;
}

public void setCreatedBy(Integer createdBy) {
    this.createdBy = createdBy;
}

public Date getCreationDate() {
    return creationDate;
}

public void setCreationDate(Date creationDate) {
    this.creationDate = creationDate;
}

public Integer getModifyBy() {
    return modifyBy;
}

public void setModifyBy(Integer modifyBy) {
    this.modifyBy = modifyBy;
}

public Date getModifyDate() {
    return modifyDate;
}

public void setModifyDate(Date modifyDate) {
    this.modifyDate = modifyDate;
}

　　　　Dao层

　　　　　　

IUserDao：（Interface）

//查询
public List<User> getAllUser();
//新增
void addUser(User user);
//删除
void  delUser(int id);
//修改
void  modifyUser(User user);
//新增时获得主键
void addUserKey(User user);
//模糊查询
public   List<User> getAllUsers();

IUserDao：（xml）

<?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">

<!--namespace需要指向接口全路径-->

        <mapper namespace="com.qzy.dao.IUserDao">

    <!--id代表当前命名空间下（接口下）的唯一方法名 resultType代表返回值类型-->


    <select resultType="User" id="getAllUser">
        select * from smbms_user
     </select>

    <insert  parameterType="User" id="addUser">
        insert into smbms_user values (DEFAULT,#{userCode},#{userName},#{userPassword},#{gender},#{birthday},#{phone},#{address},#{userRole},#{createdBy},#{creationDate},#{modifyBy},#{modifyDate})
    </insert>

    <insert id="addUserKey" parameterType="com.qzy.entity.User" useGeneratedKeys="true" keyProperty="id">
         insert into smbms_user values (DEFAULT,#{userCode},#{userName},#{userPassword},#{gender},#{birthday},#{phone},#{address},#{userRole},#{createdBy},#{creationDate},#{modifyBy},#{modifyDate})
    </insert>

    <delete id="delUser">
        delete from smbms_user where  id=#{xxx}
    </delete>

    <update id="modifyUser" parameterType="User">
        update smbms_user set userName=#{userName} where id=#{id}
    </update>

    <select id="getAllUsers" resultType="User">
       select * from smbms_user where userName like ‘%${value}%‘;
    </select>
</mapper>

resources层
mybatis-config.（xml)

<?xml version="1.0" encoding="UTF-8" ?>

省略......

<typeAliases>
    <!--单个设置别名-->
    <!-- <typeAlias type="com.qzy.entity.User" alias="User"/>-->

    <!--全局设置别名-->
    <package name="com.qzy.entity"/>
</typeAliases>
<!--log4j配置文件的读取（可以不写）-->

<settings>
    <setting name="logImpl" value="LOG4J"/>
</settings>

省略......

</configuration>
tset层
tset（class）

private  static Logger log = Logger.getLogger(Test.class.getClass());
    SqlSession sqlSession;
    @Before
    public void before() throws IOException {
        //System.out.println("执行之前========================");
        log.info("执行之前========================");
        //步骤一：读取大配置文件
        String source="mybatis-config.xml";
        InputStream is = Resources.getResourceAsStream(source);
        //步骤二：创建工厂
        SqlSessionFactory factory=new SqlSessionFactoryBuilder().build(is);
        //步骤三：创建SqlSession核心对象
        sqlSession = factory.openSession();
    }


    @Test
    public void selectAllTest() throws IOException {
      //步骤四：查
        List<User> getAllUser = sqlSession.selectList("getAllUser");
        for (User user:getAllUser) {
            //System.out.println(user.getUserName());
           log.info(user.getUserName());
        }
    }
    //模糊
    @Test
    public  void  getAllUsers() throws  IOException{
      List<User> userList=sqlSession.selectList("com.qzy.dao.IUserDao.getAllUsers","孙");
        for (User u:userList){
            ///System.out.println(u.getUserName());
            log.info(u.getUserName());
        }
    }
    //增
    @Test
    public  void  addUser() throws  IOException{
       User user =new User();
         user.setUserCode("hehe");
         user.setUserName("牛皮呀");
         user.setUserPassword("123123");
         user.setGender(2);
         user.setBirthday(new Date());
         user.setPhone("13215689594");
         user.setAddress("北京市海淀区五道口北大青鸟");
         user.setUserRole(2);
         user.setCreatedBy(1);
         user.setCreationDate(new Date());
         user.setModifyBy(null);
         user.setModifyDate(null);
        sqlSession.insert("com.qzy.dao.IUserDao.addUser",user);
        sqlSession.commit();
        //查看是否会返回自增的主键
       //System.out.println(user.getId());
        log.info(user.getId());
    }
//删
@Test
public void delUser() throws  IOException{
    sqlSession.delete("com.qzy.dao.IUserDao.delUser","17");
    sqlSession.commit();
    sqlSession.close();
    //System.out.println("删除成功！");
    log.info("删除成功！");
}
//改
@Test
public  void  modifyUser() throws  IOException{
   User user=new User();
    user.setUserName("安其拉");
    user.setId(16);
    sqlSession.update("com.qzy.dao.IUserDao.modifyUser",user);
    sqlSession.commit();
    sqlSession.close();
   //System.out.println("更改成功！");
    log.info("更改成功！");
}
    @After
    public void after(){
        //System.out.println("执行之后====================================");
        log.info("执行之后========================");
        //最后关闭sqlSession释放资源
        sqlSession.close();
    }

log4j.(properties)

### direct log messages to stdout ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
###日志文件的了路径###
log4j.appender.file.File=G:\mylog.log　　　　　　　　
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change ‘info‘ to ‘debug‘ ###
###log4j.rootLogger=debug, stdout,file
log4j.logger.com.qzy.dao=debug, stdout,file