1、在pom.xml文件中增加MyBatis的依赖
<!--用于支持mybatis-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
2、创建myuser表，使用mysql数据库
CREATE TABLE myuser (
userId int(11) NOT NULL AUTO_INCREMENT,
address varchar(200) DEFAULT NULL,
email varchar(100) DEFAULT NULL,
passWd varchar(20) NOT NULL,
phone varchar(20) DEFAULT NULL,
type int(11) NOT NULL,
userName varchar(20) NOT NULL,
PRIMARY KEY (userId)
) ENGINE=InnoDB AUTO_INCREMENT=97 DEFAULT CHARSET=utf8;
3、在application.propertise文件中添加mybatis配置、数据库配置
spring.datasource.url=jdbc\:mysql\://59.110.139.20\:3306/Interfaces?characterEncoding=utf-8
spring.datasource.username=zhangsan
spring.datasource.password=123123
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
driverPath=D:\\repository\\mysql\\mysql-connector-java\\5.1.46\\mysql-connector-java-5.1.46.jar
target_package=com.sc.springmvc
mybatis.mapper-locations=classpath:com/sc/springmvc/mapping/*.xml
mybatis.type-aliases-package=com.sc.springmvc.model
4、结合mybatis-generator-maven-plugin插件自动生成MyBatis代码。
在main/resources目录下新增 generatorConfig.xml文件。详细操作请参考Spring集成MyBatis进行单元测试
generatorConfig.xml文件内容：
<?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>
<!-- 数据库驱动 -->
<properties resource="application.properties" />
<!-- 指定数据连接驱动jar地址 -->
<classPathEntry location="${driverPath}" />
<context id="context" targetRuntime="MyBatis3">
<plugin type="org.mybatis.generator.plugins.SerializablePlugin" />
<plugin type="org.mybatis.generator.plugins.EqualsHashCodePlugin" />
<!--<plugin type="org.mybatis.generator.plugins.RenameExampleClassPlugin">-->
<!--<property name="searchString" value="Example$" />-->
<!--<property name="replaceString" value="Criteria" />-->
<!--</plugin>-->
<!-- 去掉生成出来的代码的注解 -->
<commentGenerator>
<property name="suppressAllComments" value="true" />
<property name="suppressDate" value="true" />
</commentGenerator>
<!--数据库链接URL，用户名、密码 -->
<jdbcConnection driverClass="${spring.datasource.driver-class-name}"
connectionURL="${spring.datasource.url}" userId="${spring.datasource.username}" password="${spring.datasource.password}">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false" />
</javaTypeResolver>
<!-- 生成模型的包名和位置 -->
<javaModelGenerator targetPackage="${target_package}.model"
targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
<property name="trimStrings" value="true" />
</javaModelGenerator>
<!-- 生成映射文件的包名和位置 -->
<sqlMapGenerator targetPackage="${target_package}.mapping"
targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
</sqlMapGenerator>
<!-- 生成DAO的包名和位置 -->
<javaClientGenerator type="XMLMAPPER"
targetPackage="${target_package}.dao" targetProject=".\src\main\java">
<property name="enableSubPackages" value="true" />
</javaClientGenerator>
<!--<table tableName="myuser" domainObjectName="User"></table>-->
<table tableName="myuser" domainObjectName="User"
enableCountByExample="false" enableUpdateByExample="false"
enableDeleteByExample="false" enableSelectByExample="false"
selectByExampleQueryId="false">
<property name="useActualColumnNames" value="false" />
</table>
</context>
</generatorConfiguration>
自动生成的UserMapper.java：
package com.example.demo.dao;
import com.example.demo.model.User;
import java.math.BigDecimal;
public interface UserMapper {
int deleteByPrimaryKey(BigDecimal id);
int insert(User record);
int insertSelective(User record);
User selectByPrimaryKey(BigDecimal id);
int updateByPrimaryKeySelective(User record);
int updateByPrimaryKey(User record);
}
自动生成的UserMapper.xml文件内容：
<?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 namespace="com.example.demo.dao.UserMapper">
<resultMap id="BaseResultMap" type="com.example.demo.model.User">
<id column="ID" jdbcType="DECIMAL" property="id" />
<result column="USERNAME" jdbcType="VARCHAR" property="username" />
<result column="PASSWORD" jdbcType="VARCHAR" property="password" />
</resultMap>
<sql id="Base_Column_List">
ID, USERNAME, PASSWORD
</sql>
<select id="selectByPrimaryKey" parameterType="java.math.BigDecimal" resultMap="BaseResultMap">
select
<include refid="Base_Column_List" />
from MYUSER
where ID = #{id,jdbcType=DECIMAL}
</select>
<delete id="deleteByPrimaryKey" parameterType="java.math.BigDecimal">
delete from MYUSER
where ID = #{id,jdbcType=DECIMAL}
</delete>
<insert id="insert" parameterType="com.example.demo.model.User">
insert into MYUSER (ID, USERNAME, PASSWORD
)
values (#{id,jdbcType=DECIMAL}, #{username,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR}
)
</insert>
<insert id="insertSelective" parameterType="com.example.demo.model.User">
insert into MYUSER
<trim prefix="(" suffix=")" suffixOverrides=",">
<if test="id != null">
ID,
</if>
<if test="username != null">
USERNAME,
</if>
<if test="password != null">
PASSWORD,
</if>
</trim>
<trim prefix="values (" suffix=")" suffixOverrides=",">
<if test="id != null">
#{id,jdbcType=DECIMAL},
</if>
<if test="username != null">
#{username,jdbcType=VARCHAR},
</if>
<if test="password != null">
#{password,jdbcType=VARCHAR},
</if>
</trim>
</insert>
<update id="updateByPrimaryKeySelective" parameterType="com.example.demo.model.User">
update MYUSER
<set>
<if test="username != null">
USERNAME = #{username,jdbcType=VARCHAR},
</if>
<if test="password != null">
PASSWORD = #{password,jdbcType=VARCHAR},
</if>
</set>
where ID = #{id,jdbcType=DECIMAL}
</update>
<update id="updateByPrimaryKey" parameterType="com.example.demo.model.User">
update MYUSER
set USERNAME = #{username,jdbcType=VARCHAR},
PASSWORD = #{password,jdbcType=VARCHAR}
where ID = #{id,jdbcType=DECIMAL}
</update>
</mapper>
自动生成的User.java内容如下：
package com.example.demo.model;
import java.io.Serializable;
import java.math.BigDecimal;
public class User implements Serializable {
private BigDecimal id;
private String username;
private String password;
private static final long serialVersionUID = 1L;
public BigDecimal getId() {
return id;
}
public void setId(BigDecimal id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username == null ? null : username.trim();
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password == null ? null : password.trim();
}
@Override
public boolean equals(Object that) {
if (this == that) {
return true;
}
if (that == null) {
return false;
}
if (getClass() != that.getClass()) {
return false;
}
User other = (User) that;
return (this.getId() == null ? other.getId() == null : this.getId().equals(other.getId()))
&& (this.getUsername() == null ? other.getUsername() == null : this.getUsername().equals(other.getUsername()))
&& (this.getPassword() == null ? other.getPassword() == null : this.getPassword().equals(other.getPassword()));
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((getId() == null) ? 0 : getId().hashCode());
result = prime * result + ((getUsername() == null) ? 0 : getUsername().hashCode());
result = prime * result + ((getPassword() == null) ? 0 : getPassword().hashCode());
return result;
}
}
5、OK，准备工作都已就绪，开始测试，在controller包下新增UserController类
package com.example.demo.controller;
import com.example.demo.dao.UserMapper;
import com.example.demo.impl.UserServiceImpl;
import com.example.demo.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
import java.math.BigDecimal;
/**
* Created by Suncy on 2018/5/13 0013.
*/
@Controller
public class UserController {
@Autowired
private UserMapper userMapper;
@Autowired
private UserServiceImpl userDao;
@ResponseBody
@RequestMapping("/find/mybatis/id")
public String findMailByToFromMybatis(HttpServletRequest request, BigDecimal id) {
// User userMo = userMapper.selectByPrimaryKey(id);
User userMo1 = userDao.selectByPrimaryKey(id);
return userDao.selectByPrimaryKey(id).toString();
}
}
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