xml型單資料來源Mybatis.md
阿新 • • 發佈：2018-12-06
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例項需求：使用者資訊(使用者名稱、別名、密碼、性別、郵箱、建立時間)，實現簡單增刪改查
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技術要點：
- mybatis類型別名設定
<?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> <typeAliases> <typeAlias alias="Integer" type="java.lang.Integer" /> <typeAlias alias="Long" type="java.lang.Long" /> <typeAlias alias="HashMap" type="java.util.HashMap" /> <typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" /> <typeAlias alias="ArrayList" type="java.util.ArrayList" /> <typeAlias alias="LinkedList" type="java.util.LinkedList" /> </typeAliases> </configuration>
- springboot整合mybatis配置
mybatis.config-locations：mybatis配置檔案放置路徑 mybatis.mapper-locations:mybatis對應mapper指令碼對映路徑 mybatis.type-aliases-package:mybatis對應實體包路徑 mybatis.config-locations=classpath:mybatis/mybatis-config.xml mybatis.mapper-locations=classpath:mybatis/mapper/*.xml mybatis.type-aliases-package=com.lm.entity
- springboot單資料來源配置
spring.datasource.driverClassName:資料來源驅動類 spring.datasource.url:資料來源url spring.datasource.username:使用者名稱 spring.datasource.password:密碼 spring.datasource.driverClassName = com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://192.168.32.128:3306/test?useUnicode=true&characterEncoding=utf-8 spring.datasource.username = root spring.datasource.password = root
- springboot與mybatis整合配置
在可執行檔案下掃描mapper包
/**
* 應用啟動
*
* @author liangming.deng
* @date 2017年6月20日
*
*/
@SpringBootApplication
@MapperScan("com.lm.mapper")
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
- 進行controller層的開發：注入相應的Mapper介面進行操作
附上Mapper.xml和Mapper介面程式碼：
/**
* mybatis中mapper介面
* @author liangming.deng
* @date 2017年6月21日
*
*/
@Mapper
public interface UserMapper {
List<UserEntity> getAll();
UserEntity getUserById(Long id);
void insert(UserEntity user);
void update(UserEntity user);
void delete(Long id);
}
<?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.lm.mapper.test.UserMapper">
<resultMap id="BaseResultMap" type="com.lm.entity.UserEntity">
<id column="id" property="id" jdbcType="BIGINT" />
<result column="userName" property="userName" jdbcType="VARCHAR" />
<result column="nickName" property="nickName" jdbcType="VARCHAR" />
<result column="passWord" property="passWord" jdbcType="VARCHAR" />
<result column="email" property="email" jdbcType="VARCHAR" />
<result column="regTime" property="regTime" jdbcType="DATE" />
<result column="sex" property="sexEnums" javaType="com.lm.enums.SexEnums" />
</resultMap>
<sql id="Base_Column_List">
id, userName, nickName,passWord, email,regTime,sex
</sql>
<select id="getAll" resultMap="BaseResultMap">
SELECT
<include refid="Base_Column_List" />
FROM user
</select>
<select id="getUserById" parameterType="java.lang.Long" resultMap="BaseResultMap">
SELECT
<include refid="Base_Column_List" />
FROM user
WHERE id = #{id}
</select>
<insert id="insert" parameterType="com.lm.entity.UserEntity">
INSERT INTO
user
(userName, nickName,passWord, email,regTime,sex)
VALUES
(#{userName},#{nickName}, #{passWord},#{email}, #{regTime},#{sexEnums})
</insert>
<update id="update" parameterType="com.lm.entity.UserEntity">
UPDATE
user
SET
<if test="userName != null">userName = #{userName},</if>
<if test="passWord != null">passWord = #{passWord}</if>
WHERE
id = #{id}
</update>
<delete id="delete" parameterType="java.lang.Long">
DELETE FROM
user
WHERE
id =#{id}
</delete>
</mapper>