我们以 Mybatis Xml和注解两种版本为例,给大家展示如何如何配置多数据源。
数据库文件:
DROP TABLE IF EXISTS `users`;
CREATE TABLE `users` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键id',
`userName` varchar(32) DEFAULT NULL COMMENT '用户名',
`passWord` varchar(32) DEFAULT NULL COMMENT '密码',
`user_sex` varchar(32) DEFAULT NULL,
`nick_name` varchar(32) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.1.0.RELEASEversion>
<relativePath/>
parent>
<groupId>com.examplegroupId>
<artifactId>spring-boot-mybatis-annotation-mulidatasourceartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>spring-boot-mybatis-annotation-mulidatasourcename>
<description>spring-boot-mybatis-annotation-mulidatasourcedescription>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.0.0version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
plugin>
plugins>
build>
project>
mybatis.type-aliases-package=com.example.model
spring.datasource.test1.jdbc-url=jdbc:mysql://localhost:3306/test1?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.test1.username=root
spring.datasource.test1.password=root
spring.datasource.test1.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.test2.jdbc-url=jdbc:mysql://localhost:3306/test2?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.test2.username=root
spring.datasource.test2.password=root
spring.datasource.test2.driver-class-name=com.mysql.cj.jdbc.Driver
package com.example.mapper.test1;
import com.example.enums.UserSexEnum;
import com.example.model.User;
import org.apache.ibatis.annotations.*;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
public interface User1Mapper {
@Select("SELECT * FROM users")
@Results({
@Result(property = "userSex", column = "user_sex", javaType = UserSexEnum.class),
@Result(property = "nickName", column = "nick_name")
})
List<User> getAll();
@Select("SELECT * FROM users WHERE id = #{id}")
@Results({
@Result(property = "userSex", column = "user_sex", javaType = UserSexEnum.class),
@Result(property = "nickName", column = "nick_name")
})
User getOne(Long id);
@Insert("INSERT INTO users(userName,passWord,user_sex) VALUES(#{userName}, #{passWord}, #{userSex})")
void insert(User user);
@Update("UPDATE users SET userName=#{userName},nick_name=#{nickName} WHERE id =#{id}")
void update(User user);
@Delete("DELETE FROM users WHERE id =#{id}")
void delete(Long id);
}
package com.example.mapper.test2;
import java.util.List;
import com.example.enums.UserSexEnum;
import com.example.model.User;
import org.apache.ibatis.annotations.*;
import org.springframework.stereotype.Component;
@Component
public interface User2Mapper {
@Select("SELECT * FROM users")
@Results({
@Result(property = "userSex", column = "user_sex", javaType = UserSexEnum.class),
@Result(property = "nickName", column = "nick_name")
})
List<User> getAll();
@Select("SELECT * FROM users WHERE id = #{id}")
@Results({
@Result(property = "userSex", column = "user_sex", javaType = UserSexEnum.class),
@Result(property = "nickName", column = "nick_name")
})
User getOne(Long id);
@Insert("INSERT INTO users(userName,passWord,user_sex) VALUES(#{userName}, #{passWord}, #{userSex})")
void insert(User user);
@Update("UPDATE users SET userName=#{userName},nick_name=#{nickName} WHERE id =#{id}")
void update(User user);
@Delete("DELETE FROM users WHERE id =#{id}")
void delete(Long id);
}
package com.example.model;
import java.io.Serializable;
import com.example.enums.UserSexEnum;
public class User implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
private String userName;
private String passWord;
private UserSexEnum userSex;
private String nickName;
public User() {
super();
}
public User(String userName, String passWord, UserSexEnum userSex) {
super();
this.passWord = passWord;
this.userName = userName;
this.userSex = userSex;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public UserSexEnum getUserSex() {
return userSex;
}
public void setUserSex(UserSexEnum userSex) {
this.userSex = userSex;
}
public String getNickName() {
return nickName;
}
public void setNickName(String nickName) {
this.nickName = nickName;
}
@Override
public String toString() {
return "userName " + this.userName + ", pasword " + this.passWord + "sex " + userSex.name();
}
}
package com.example.enums;
public enum UserSexEnum {
MAN, WOMAN
}
package com.example.datasource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.example.mapper.test1", sqlSessionTemplateRef = "test1SqlSessionTemplate")
public class DataSource1Config {
@Bean(name = "test1DataSource")
@ConfigurationProperties(prefix = "spring.datasource.test1")
@Primary
public DataSource testDataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "test1SqlSessionFactory")
@Primary
public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
return bean.getObject();
}
@Bean(name = "test1TransactionManager")
@Primary
public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean(name = "test1SqlSessionTemplate")
@Primary
public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
package com.example.datasource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.example.mapper.test2", sqlSessionTemplateRef = "test2SqlSessionTemplate")
public class DataSource2Config {
@Bean(name = "test2DataSource")
@ConfigurationProperties(prefix = "spring.datasource.test2")
public DataSource testDataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "test2SqlSessionFactory")
public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
return bean.getObject();
}
@Bean(name = "test2TransactionManager")
public DataSourceTransactionManager testTransactionManager(@Qualifier("test2DataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean(name = "test2SqlSessionTemplate")
public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootMybatisAnnotationMulidatasourceApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootMybatisAnnotationMulidatasourceApplication.class, args);
}
}
package com.example.web;
import java.util.List;
import com.example.mapper.test1.User1Mapper;
import com.example.mapper.test2.User2Mapper;
import com.example.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class UserController {
@Autowired
private User1Mapper user1Mapper;
@Autowired
private User2Mapper user2Mapper;
@RequestMapping("/getUsers")
public List<User> getUsers() {
List<User> users=user1Mapper.getAll();
return users;
}
@RequestMapping("/getUser")
public User getUser(Long id) {
User user=user2Mapper.getOne(id);
return user;
}
@RequestMapping("/add")
public void save(User user) {
user2Mapper.insert(user);
}
@RequestMapping(value="update")
public void update(User user) {
user2Mapper.update(user);
}
@RequestMapping(value="/delete/{id}")
public void delete(@PathVariable("id") Long id) {
user1Mapper.delete(id);
}
}
package com.example.mapper;
import com.example.enums.UserSexEnum;
import com.example.mapper.test1.User1Mapper;
import com.example.model.User;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class User1MapperTest {
@Autowired
private User1Mapper userMapper;
@Test
public void testInsert() throws Exception {
userMapper.insert(new User("aa", "a123456", UserSexEnum.MAN));
userMapper.insert(new User("bb", "b123456", UserSexEnum.WOMAN));
userMapper.insert(new User("cc", "b123456", UserSexEnum.WOMAN));
// Assert.assertEquals(3, userMapper.getAll().size());
}
@Test
public void testQuery() throws Exception {
List<User> users = userMapper.getAll();
if(users==null || users.size()==0){
System.out.println("is null");
}else{
System.out.println(users.size());
}
}
@Test
public void testUpdate() throws Exception {
User user = userMapper.getOne(6l);
System.out.println(user.toString());
user.setNickName("neo");
userMapper.update(user);
Assert.assertTrue(("neo".equals(userMapper.getOne(6l).getNickName())));
}
}
package com.example.mapper;
import com.example.enums.UserSexEnum;
import com.example.mapper.test2.User2Mapper;
import com.example.model.User;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class User2MapperTest {
@Autowired
private User2Mapper userMapper;
@Test
public void testInsert() throws Exception {
userMapper.insert(new User("aa", "a123456", UserSexEnum.MAN));
userMapper.insert(new User("bb", "b123456", UserSexEnum.WOMAN));
userMapper.insert(new User("cc", "b123456", UserSexEnum.WOMAN));
// Assert.assertEquals(3, userMapper.getAll().size());
}
@Test
public void testQuery() throws Exception {
List<User> users = userMapper.getAll();
if(users==null || users.size()==0){
System.out.println("is null");
}else{
System.out.println(users.toString());
}
}
@Test
public void testUpdate() throws Exception {
User user = userMapper.getOne(6l);
System.out.println(user.toString());
user.setNickName("neo");
userMapper.update(user);
Assert.assertTrue(("neo".equals(userMapper.getOne(6l).getNickName())));
}
}
数据库文件:
DROP TABLE IF EXISTS `users`;
CREATE TABLE `users` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键id',
`userName` varchar(32) DEFAULT NULL COMMENT '用户名',
`passWord` varchar(32) DEFAULT NULL COMMENT '密码',
`user_sex` varchar(32) DEFAULT NULL,
`nick_name` varchar(32) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.1.0.RELEASEversion>
<relativePath/>
parent>
<groupId>com.examplegroupId>
<artifactId>spring-boot-mybatis-xml-mulidatasourceartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>spring-boot-mybatis-xml-mulidatasourcename>
<description>spring-boot-mybatis-xml-mulidatasourcedescription>
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>2.0.0version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
plugin>
plugins>
build>
project>
mybatis.config-location=classpath:mybatis/mybatis-config.xml
spring.datasource.test1.jdbc-url=jdbc:mysql://localhost:3306/test1?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.test1.username=root
spring.datasource.test1.password=root
spring.datasource.test1.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.test2.jdbc-url=jdbc:mysql://localhost:3306/test2?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8&useSSL=true
spring.datasource.test2.username=root
spring.datasource.test2.password=root
spring.datasource.test2.driver-class-name=com.mysql.cj.jdbc.Driver
一个 test1 库和一个 test2 库,其中 test1 位主库,在使用的过程中必须指定主库,不然会报错。
package com.example.datasource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.example.mapper.test1", sqlSessionTemplateRef = "test1SqlSessionTemplate")
public class DataSource1Config {
@Bean(name = "test1DataSource")
@ConfigurationProperties(prefix = "spring.datasource.test1")
@Primary
public DataSource testDataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "test1SqlSessionFactory")
@Primary
public SqlSessionFactory testSqlSessionFactory(@Qualifier("test1DataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/mapper/test1/*.xml"));
return bean.getObject();
}
@Bean(name = "test1TransactionManager")
@Primary
public DataSourceTransactionManager testTransactionManager(@Qualifier("test1DataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean(name = "test1SqlSessionTemplate")
@Primary
public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test1SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
package com.example.datasource;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.SqlSessionTemplate;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.jdbc.DataSourceBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import javax.sql.DataSource;
@Configuration
@MapperScan(basePackages = "com.example.mapper.test2", sqlSessionTemplateRef = "test2SqlSessionTemplate")
public class DataSource2Config {
@Bean(name = "test2DataSource")
@ConfigurationProperties(prefix = "spring.datasource.test2")
public DataSource testDataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "test2SqlSessionFactory")
public SqlSessionFactory testSqlSessionFactory(@Qualifier("test2DataSource") DataSource dataSource) throws Exception {
SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
bean.setDataSource(dataSource);
bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mybatis/mapper/test2/*.xml"));
return bean.getObject();
}
@Bean(name = "test2TransactionManager")
public DataSourceTransactionManager testTransactionManager(@Qualifier("test2DataSource") DataSource dataSource) {
return new DataSourceTransactionManager(dataSource);
}
@Bean(name = "test2SqlSessionTemplate")
public SqlSessionTemplate testSqlSessionTemplate(@Qualifier("test2SqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
return new SqlSessionTemplate(sqlSessionFactory);
}
}
最关键的地方就是这块了,一层一层注入,首先创建 DataSource,然后创建 SqlSessionFactory 再创建事务,最后
包装到 SqlSessionTemplate 中。其中需要指定分库的 mapper 文件地址,以及分库dao层代码
@MapperScan(basePackages = "com.neo.mapper.test1", sqlSessionTemplateRef = "test1SqlSessionTemplate")
这块的注解就是指明了扫描 dao 层,并且给 dao 层注入指定的 SqlSessionTemplate。所有@Bean
都需要按照命
名指定正确。
dao 层和 xml 需要按照库来分在不同的目录,比如:test1 库 dao 层在 com.neo.mapper.test1
包下,test2 库
在com.neo.mapper.test2
package com.example.mapper.test1;
import com.example.model.User;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
public interface User1Mapper {
List<User> getAll();
User getOne(Long id);
void insert(User user);
void update(User user);
void delete(Long id);
}
package com.example.mapper.test2;
import com.example.model.User;
import org.springframework.stereotype.Component;
import java.util.List;
@Component
public interface User2Mapper {
List<User> getAll();
User getOne(Long id);
void insert(User user);
void update(User user);
void delete(Long id);
}
xml 层
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.mapper.test1.User1Mapper" >
<resultMap id="BaseResultMap" type="com.example.model.User" >
<id column="id" property="id" jdbcType="BIGINT" />
<result column="userName" property="userName" jdbcType="VARCHAR" />
<result column="passWord" property="passWord" jdbcType="VARCHAR" />
<result column="user_sex" property="userSex" javaType="com.example.enums.UserSexEnum"/>
<result column="nick_name" property="nickName" jdbcType="VARCHAR" />
resultMap>
<sql id="Base_Column_List" >
id, userName, passWord, user_sex, nick_name
sql>
<select id="getAll" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM users
select>
<select id="getOne" parameterType="java.lang.Long" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM users
WHERE id = #{id}
select>
<insert id="insert" parameterType="com.example.model.User" >
INSERT INTO
users
(userName,passWord,user_sex)
VALUES
(#{userName}, #{passWord}, #{userSex})
insert>
<update id="update" parameterType="com.example.model.User" >
UPDATE
users
SET
<if test="userName != null">userName = #{userName},if>
<if test="passWord != null">passWord = #{passWord},if>
nick_name = #{nickName}
WHERE
id = #{id}
update>
<delete id="delete" parameterType="java.lang.Long" >
DELETE FROM
users
WHERE
id =#{id}
delete>
mapper>
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.example.mapper.test2.User2Mapper" >
<resultMap id="BaseResultMap" type="com.example.model.User" >
<id column="id" property="id" jdbcType="BIGINT" />
<result column="userName" property="userName" jdbcType="VARCHAR" />
<result column="passWord" property="passWord" jdbcType="VARCHAR" />
<result column="user_sex" property="userSex" javaType="com.example.enums.UserSexEnum"/>
<result column="nick_name" property="nickName" jdbcType="VARCHAR" />
resultMap>
<sql id="Base_Column_List" >
id, userName, passWord, user_sex, nick_name
sql>
<select id="getAll" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM users
select>
<select id="getOne" parameterType="java.lang.Long" resultMap="BaseResultMap" >
SELECT
<include refid="Base_Column_List" />
FROM users
WHERE id = #{id}
select>
<insert id="insert" parameterType="com.example.model.User" >
INSERT INTO
users
(userName,passWord,user_sex)
VALUES
(#{userName}, #{passWord}, #{userSex})
insert>
<update id="update" parameterType="com.example.model.User" >
UPDATE
users
SET
<if test="userName != null">userName = #{userName},if>
<if test="passWord != null">passWord = #{passWord},if>
nick_name = #{nickName}
WHERE
id = #{id}
update>
<delete id="delete" parameterType="java.lang.Long" >
DELETE FROM
users
WHERE
id =#{id}
delete>
mapper>
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>
实体类:
package com.example.enums;
public enum UserSexEnum {
MAN, WOMAN
}
package com.example.model;
import com.example.enums.UserSexEnum;
import java.io.Serializable;
public class User implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
private String userName;
private String passWord;
private UserSexEnum userSex;
private String nickName;
public User() {
super();
}
public User(String userName, String passWord, UserSexEnum userSex) {
super();
this.passWord = passWord;
this.userName = userName;
this.userSex = userSex;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getPassWord() {
return passWord;
}
public void setPassWord(String passWord) {
this.passWord = passWord;
}
public UserSexEnum getUserSex() {
return userSex;
}
public void setUserSex(UserSexEnum userSex) {
this.userSex = userSex;
}
public String getNickName() {
return nickName;
}
public void setNickName(String nickName) {
this.nickName = nickName;
}
@Override
public String toString() {
return "userName " + this.userName + ", pasword " + this.passWord + ", sex " + userSex.name();
}
}
package com.example.web;
import com.example.mapper.test1.User1Mapper;
import com.example.mapper.test2.User2Mapper;
import com.example.model.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
public class UserController {
@Autowired
private User1Mapper user1Mapper;
@Autowired
private User2Mapper user2Mapper;
@RequestMapping("/getUsers")
public List<User> getUsers() {
List<User> users=user1Mapper.getAll();
return users;
}
@RequestMapping("/getUser")
public User getUser(Long id) {
User user=user2Mapper.getOne(id);
return user;
}
@RequestMapping("/add")
public void save(User user) {
user2Mapper.insert(user);
}
@RequestMapping(value="update")
public void update(User user) {
user2Mapper.update(user);
}
@RequestMapping(value="/delete/{id}")
public void delete(@PathVariable("id") Long id) {
user1Mapper.delete(id);
}
}
package com.example;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootMybatisXmlMulidatasourceApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootMybatisXmlMulidatasourceApplication.class, args);
}
}
package com.example.mapper;
import com.example.enums.UserSexEnum;
import com.example.mapper.test1.User1Mapper;
import com.example.model.User;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class User1MapperTest {
@Autowired
private User1Mapper userMapper;
@Test
public void testInsert() throws Exception {
userMapper.insert(new User("aa", "a123456", UserSexEnum.MAN));
userMapper.insert(new User("bb", "b123456", UserSexEnum.WOMAN));
userMapper.insert(new User("cc", "b123456", UserSexEnum.WOMAN));
// Assert.assertEquals(3, userMapper.getAll().size());
}
@Test
public void testQuery() throws Exception {
List<User> users = userMapper.getAll();
if (users == null || users.size() == 0) {
System.out.println("is null");
} else {
System.out.println(users.size());
}
}
@Test
public void testUpdate() throws Exception {
User user = userMapper.getOne(6l);
System.out.println(user.toString());
user.setNickName("neo");
userMapper.update(user);
Assert.assertTrue(("neo".equals(userMapper.getOne(6l).getNickName())));
}
}
package com.example.mapper;
import com.example.enums.UserSexEnum;
import com.example.mapper.test2.User2Mapper;
import com.example.model.User;
import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.List;
@RunWith(SpringRunner.class)
@SpringBootTest
public class User2MapperTest {
@Autowired
private User2Mapper userMapper;
@Test
public void testInsert() throws Exception {
userMapper.insert(new User("aa", "a123456", UserSexEnum.MAN));
userMapper.insert(new User("bb", "b123456", UserSexEnum.WOMAN));
userMapper.insert(new User("cc", "b123456", UserSexEnum.WOMAN));
// Assert.assertEquals(3, userMapper.getAll().size());
}
@Test
public void testQuery() throws Exception {
List<User> users = userMapper.getAll();
if(users==null || users.size()==0){
System.out.println("is null");
}else{
System.out.println(users.toString());
}
}
@Test
public void testUpdate() throws Exception {
User user = userMapper.getOne(6l);
System.out.println(user.toString());
user.setNickName("neo");
userMapper.update(user);
Assert.assertTrue(("neo".equals(userMapper.getOne(6l).getNickName())));
}
}