SpringBoot多数据源的配置(SpringBoot+MyBatis)
遇到的问题
1,@Primary注解是必要的,不然会出现异常.
org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: test1DataSource,test2DataSource
2,因为存在多个DataSource,SqlSessionFactory,PlatformTransactionManager,SqlSessionTemplate所以要使用"name"来区分.
3,SqlSessionTemplate如果不配置,在访问主数据源的数据没有问题,但是访问另一个数据源就会出现异常.
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): cn.zz.mapper1.UserMapper1.findAll
4,MyBatis@Configuration上需要加注解
@MapperScan(basePackages = "cn.zz.mapper1", sqlSessionTemplateRef = "test2SqlSessionTemplate")
结构
数据源
package cn.zz.config;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.autoconfigure.jdbc.DataSourceBuilder;import org.springframework.boot.context.properties.ConfigurationProperties;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 org.springframework.transaction.PlatformTransactionManager;import javax.sql.DataSource;@Configuration@MapperScan(basePackages = "cn.zz.mapper", sqlSessionTemplateRef = "test1SqlSessionTemplate")public class DataSource1 { @Bean(name = "test1DataSource") @ConfigurationProperties(prefix = "spring.datasource.primary") @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/*.xml")); return bean.getObject(); } @Bean(name = "test1TransactionManager") @Primary public PlatformTransactionManager 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 cn.zz.config;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.autoconfigure.jdbc.DataSourceBuilder;import org.springframework.boot.context.properties.ConfigurationProperties;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 org.springframework.transaction.PlatformTransactionManager;import javax.sql.DataSource;@Configuration@MapperScan(basePackages = "cn.zz.mapper1", sqlSessionTemplateRef = "test2SqlSessionTemplate")public class DataSource2 { @Bean(name = "test2DataSource") @ConfigurationProperties(prefix = "spring.datasource.secondary") 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:mybatis1/*.xml")); return bean.getObject(); } @Bean(name = "test2TransactionManager") public PlatformTransactionManager 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); }}
Controller
package cn.zz.controller;import cn.zz.model.User;import cn.zz.service.UserService;import cn.zz.service1.UserService1;import org.apache.log4j.Logger;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 java.util.List;-
@Controllerpublic class UserController { private Logger logger = Logger.getLogger(UserController.class); @Autowired private UserService userService; @Autowired private UserService1 userService1; @RequestMapping("/save") @ResponseBody public User save() { User user = userService.save("zz",27,"72"); return user; } @RequestMapping("/save1") @ResponseBody public String save1() { userService.save1("zz",27,"72"); return "ok"; } @RequestMapping("/getUserInfo") @ResponseBody public User getUserInfo() { User user = userService.getUserInfo(); if(user!=null){ System.out.println("user.getName():"+user.getName()); logger.info("user.getAge():"+user.getAge()); } return user; } @RequestMapping("/findAll") @ResponseBody public List<User> findAll() { List<User> user = userService.findAll(); return user; } @RequestMapping("/findAll1") @ResponseBody public List<User> findAll1() { List<User> user = userService1.findAll1(); return user; }}
Service
package cn.zz.service;import cn.zz.mapper.UserMapper;import cn.zz.model.User;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import java.util.List;- @Service
@Transactionalpublic class UserService { @Autowired private UserMapper userMapper; public User getUserInfo(){ User user=userMapper.findUserInfo(); //User user=null; return user; } public User save(String name, Integer age, String password) { User user=new User(); user.setName(name); user.setAge(age); user.setPassword(password); userMapper.save(user); return user; } public List<User> findAll() { List<User> user=userMapper.findAll(); //User user=null; return user; } public void save1(String zz, int i, String s) { User user=new User(); user.setName(zz); user.setAge(i); user.setPassword(s); userMapper.save1(user); }}
package cn.zz.service1;import cn.zz.mapper1.UserMapper1;import cn.zz.model.User;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import org.springframework.transaction.annotation.Transactional;import java.util.List;@Service@Transactionalpublic class UserService1 { @Autowired private UserMapper1 userMapper1; public List<User> findAll1() { List<User> user = userMapper1.findAll(); //User user=null; return user; }}
Mapper
package cn.zz.mapper;import cn.zz.model.User;import java.util.List;/** * Created by zl on 2015/8/27. *///@Repository(value = "sqlSessionFactoryBean1")public interface UserMapper { public User findUserInfo(); void save(User user); List<User> findAll(); void save1(User user);}
package cn.zz.mapper1;import cn.zz.model.User;import java.util.List;public interface UserMapper1 { public User findUserInfo(); void save(User user); List<User> findAll(); void save1(User user);}
Mapper.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"><mapper namespace="cn.zz.mapper.UserMapper"> <select id="findUserInfo" resultType="cn.zz.model.User"> select id,name,age,password from user; select> <select id="findAll" resultType="cn.zz.model.User"> select id,name,age,password from user; select> <insert id="save" keyProperty="id" keyColumn="id" useGeneratedKeys="true"> INSERT INTO user(name,age,password) VALUES(#{name}, #{age}, #{password}); insert> <insert id="save1"> INSERT INTO user(name,age,password) VALUES(#{name}, #{age}, #{password}); insert>mapper>
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="cn.zz.mapper1.UserMapper1"> <select id="findUserInfo" resultType="cn.zz.model.User"> select id,name,age,password from user; select> <select id="findAll" resultType="cn.zz.model.User"> select id,name,age,password from user; select> <insert id="save" keyProperty="id" keyColumn="id" useGeneratedKeys="true"> INSERT INTO user(name,age,password) VALUES(#{name}, #{age}, #{password}); insert> <insert id="save1"> INSERT INTO user(name,age,password) VALUES(#{name}, #{age}, #{password}); insert>mapper>
实体类
package cn.zz.model;public class User { private Integer id; private String name; private Integer age; private String password; public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; }}
application.properties
spring.datasource.primary.url=jdbc:mysql://127.0.0.1:3306/zz?useUnicode=true&characterEncoding=gbk&zeroDateTimeBehavior=convertToNullspring.datasource.primary.username=rootspring.datasource.primary.password=123456spring.datasource.primary.driver-class-name=com.mysql.jdbc.Driverspring.datasource.secondary.url=jdbc:mysql://127.0.0.1:3306/zz1?useUnicode=true&characterEncoding=gbk&zeroDateTimeBehavior=convertToNullspring.datasource.secondary.username=rootspring.datasource.secondary.password=123456spring.datasource.secondary.driver-class-name=com.mysql.jdbc.Driver
Application
package cn.zz;import org.apache.log4j.Logger;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;//@EnableAutoConfiguration@SpringBootApplication//@ComponentScan//@MapperScan("cn.no7player.mapper")public class Application { private static Logger logger = Logger.getLogger(Application.class); /** * Start */ public static void main(String[] args) { SpringApplication.run(Application.class, args); logger.info("SpringBoot Start Success"); }}
xml version="1.0" encoding="UTF-8"?> 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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> />