使用MyBatis XML方式建立持久層及其測試方法

src/main/java/com/example/demo/SpringBootDemoApplication.java

@@ -1,9 +1,11 @@
 package com.example.demo;
 
+import org.mybatis.spring.annotation.MapperScan;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
 @SpringBootApplication
+@MapperScan("com.example.demo.mapper")
 public class SpringBootDemoApplication {
 
 	public static void main(String[] args) {

src/main/java/com/example/demo/mapper/CountyMapper.java

@@ -2,18 +2,10 @@
 
 import java.util.List;
 
-import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Select;
-
 import com.example.demo.entity.County;
 
-@Mapper
 public interface CountyMapper {
 
-	@Select(" SELECT "
-		  + "	ID, NAME "
-		  + " FROM "
-		  + "	test_project.county ")
 	public List<County> findAllCounty();
 
 }

src/main/java/com/example/demo/mapper/DistrictMapper.java

@@ -2,20 +2,10 @@
 
 import java.util.List;
 
-import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Select;
-
 import com.example.demo.entity.District;
 
-@Mapper
 public interface DistrictMapper {
 
-	@Select(" SELECT "
-		  + "	ID, NAME "
-		  + " FROM "
-		  + "	test_project.district "
-		  + " WHERE "
-		  + "	C_ID = #{c_id} ")
 	public List<District> findDistrictByC_id(String c_id);
 
 }

src/main/java/com/example/demo/mapper/MemberAccountMapper.java

@@ -1,39 +1,11 @@
 package com.example.demo.mapper;
 
-import org.apache.ibatis.annotations.Insert;
-import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Select;
-import org.apache.ibatis.annotations.Update;
-
 import com.example.demo.entity.MemberAccount;
 
-@Mapper
 public interface MemberAccountMapper {
 
-	@Insert(" INSERT INTO test_project.member_account ( "
-		  + "	USERNAME, PASSWORD, SALT, "
-		  + "	CREATE_BY, CREATE_TIME, UPDATE_BY, UPDATE_TIME "
-		  + " ) "
-		  + " VALUE ( "
-		  + "	#{username}, #{password}, #{salt}, "
-		  + "	#{create_by}, NOW(), #{update_by}, NOW() "
-		  + " ) ")
 	public Integer insert(MemberAccount memberAccount);
-
-	@Select(" SELECT "
-		  + "	ID, USERNAME, PASSWORD, SALT "
-		  + " FROM "
-		  + "	test_project.member_account "
-		  + " WHERE "
-		  + "	USERNAME = #{username} ")
 	public MemberAccount findMemberAccountByUsername(String username);
-
-	@Update(" UPDATE "
-		  + "	test_project.member_account "
-		  + " SET "
-		  + "	PASSWORD = #{password}, UPDATE_BY = #{update_by}, UPDATE_TIME = NOW() "
-		  + " WHERE "
-		  + "	ID = #{id} ")
 	public Integer update(MemberAccount memberAccount);
 
 }

src/main/java/com/example/demo/mapper/MemberMapper.java

@@ -1,44 +1,11 @@
 package com.example.demo.mapper;
 
-import org.apache.ibatis.annotations.Insert;
-import org.apache.ibatis.annotations.Mapper;
-import org.apache.ibatis.annotations.Select;
-import org.apache.ibatis.annotations.Update;
-
 import com.example.demo.entity.Member;
 
-@Mapper
 public interface MemberMapper {
 
-	@Insert(" INSERT INTO test_project.member ( "
-		  + "	MA_ID, NAME, ID_NUMBER, BIRTHDAY, "
-		  + "	PHONE, C_ID, D_ID, ADDRESS, "
-		  + "	CREATE_BY, CREATE_TIME, UPDATE_BY, UPDATE_TIME "
-		  + " ) "
-		  + " VALUE ( "
-		  + "	#{ma_id}, #{name}, #{id_number}, #{birthday}, "
-		  + "	#{phone}, #{c_id}, #{d_id}, #{address}, "
-		  + "	#{create_by}, NOW(), #{update_by}, NOW() "
-		  + " ) ")
 	public Integer insert(Member member);
-
-	@Select(" SELECT "
-		  + "	MA_ID, NAME, ID_NUMBER, BIRTHDAY, "
-		  + "	PHONE, C_ID, D_ID, ADDRESS "
-		  + " FROM "
-		  + "	test_project.member "
-		  + " WHERE "
-		  + "	MA_ID = #{ma_id} ")
 	public Member findMemberByMa_id(String ma_id);
-
-	@Update(" UPDATE "
-		  + "	test_project.member "
-		  + " SET "
-		  + "	ID_NUMBER = #{id_number}, BIRTHDAY = #{birthday}, PHONE = #{phone}, "
-		  + "	C_ID = #{c_id}, D_ID = #{d_id}, ADDRESS = #{address}, "
-		  + "	UPDATE_BY = #{update_by}, UPDATE_TIME = NOW() "
-		  + " WHERE "
-		  + "	MA_ID = #{ma_id} ")
 	public Integer update(Member member);
 
 }

src/main/resources/application.properties

@@ -2,3 +2,5 @@ spring.datasource.url=jdbc:mysql://localhost:3306/test_project?useUnicode=true&c
 spring.datasource.username=root
 spring.datasource.password=123456
 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
+
+mybatis.mapper-locations=classpath:mappers/*.xml 

src/main/resources/mappers/CountyMapper.xml

@@ -0,0 +1,11 @@
+<?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 對應持久層的介面 -->
+<mapper namespace="com.example.demo.mapper.CountyMapper" >    
+    <select id="findAllCounty" resultType="com.example.demo.entity.County">
+    	SELECT 
+	    	ID, NAME
+	    FROM 
+       		test_project.county
+    </select>
+</mapper> 

src/main/resources/mappers/DistrictMapper.xml

@@ -0,0 +1,13 @@
+<?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 對應持久層的介面 -->
+<mapper namespace="com.example.demo.mapper.DistrictMapper" >    
+    <select id="findDistrictByC_id" resultType="com.example.demo.entity.District">
+    	SELECT 
+	    	ID, C_ID, NAME
+	    FROM 
+       		test_project.district
+       	WHERE 
+       		C_ID = #{c_id}
+    </select>
+</mapper> 

src/main/resources/mappers/MemberAccountMapper.xml

@@ -0,0 +1,33 @@
+<?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 對應持久層的介面 -->
+<mapper namespace="com.example.demo.mapper.MemberAccountMapper" >        <!-- id 對應持久層介面的方法，parameterType 為引數資料型別，resultType 為返回資料型別 -->
+    <insert id="insert" parameterType="com.example.demo.entity.MemberAccount">
+       INSERT INTO test_project.member_account (
+       		USERNAME, PASSWORD, SALT, 
+       		CREATE_BY, CREATE_TIME, UPDATE_BY, UPDATE_TIME
+       )     
+        VALUES (
+        	#{username}, #{password}, #{salt},
+        	#{create_by}, NOW(), #{update_by}, NOW()
+        )
+    </insert>
+
+    <select id="findMemberAccountByUsername" parameterType="string" resultType="com.example.demo.entity.MemberAccount">
+    	SELECT 
+	    	ID, USERNAME, PASSWORD, SALT
+	    FROM 
+       		test_project.member_account
+       	WHERE 
+       		USERNAME = #{username}
+    </select>
+
+    <update id="update" parameterType="com.example.demo.entity.MemberAccount">
+		UPDATE 
+	    	test_project.member_account 
+		SET 
+			PASSWORD = #{password}, UPDATE_BY = #{update_by}, UPDATE_TIME = NOW()
+		WHERE 
+			ID = #{id}
+    </update>
+</mapper> 

src/main/resources/mappers/MemberMapper.xml

@@ -0,0 +1,38 @@
+<?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 對應持久層的介面 -->
+<mapper namespace="com.example.demo.mapper.MemberMapper" >        <!-- id 對應持久層介面的方法，parameterType 為引數資料型別，resultType 為返回資料型別 -->
+    <insert id="insert" parameterType="com.example.demo.entity.Member">
+       INSERT INTO test_project.member (
+       		MA_ID, NAME, ID_NUMBER, BIRTHDAY, 
+       		PHONE, C_ID, D_ID, ADDRESS,
+       		CREATE_BY, CREATE_TIME, UPDATE_BY, UPDATE_TIME
+       )     
+        VALUES (
+        	#{ma_id}, #{name}, #{id_number}, #{birthday},
+        	#{phone}, #{c_id}, #{d_id}, #{address},
+        	#{create_by}, NOW(), #{update_by}, NOW()
+        )
+    </insert>
+
+    <select id="findMemberByMa_id" parameterType="string" resultType="com.example.demo.entity.Member">
+    	SELECT 
+       		MA_ID, NAME, ID_NUMBER, BIRTHDAY, 
+       		PHONE, C_ID, D_ID, ADDRESS
+	    FROM 
+       		test_project.member
+       	WHERE 
+       		MA_ID = #{ma_id}
+    </select>
+
+    <update id="update" parameterType="com.example.demo.entity.Member">
+		UPDATE 
+	    	test_project.member 
+		SET 
+			ID_NUMBER = #{id_number}, BIRTHDAY = #{birthday}, PHONE = #{phone}, 
+			C_ID = #{c_id}, D_ID = #{d_id}, ADDRESS = #{address}, 
+			UPDATE_BY = #{update_by}, UPDATE_TIME = NOW()
+		WHERE 
+			MA_ID = #{ma_id}
+    </update>
+</mapper>