Spring boot怎么整合Mybatis

 最近刚接触spring boot，正是因为他的及简配置方便开发，促使我下定决心要用它把之前写的项目重构，那么问题来了，spring boot怎么整合mybatis呢，下面几个配置类来搞定。

在我的代码当中是实现了数据库读写分离的，所以代码仅做参考，如有需要可以加我微信：benyzhous

【后续更新】

1、文件结构

DataBaseConfiguration.Java用来获取数据库连接配置信息，配置从application.properties中读取

MybatisConfiguration.java也就是MyBatis配置核心入口，构建连接创建SqlSessionFactory

2、下面直接贴代码，有问题的话可以留言或者加我的微信公众号：cha-baba，或者个人微信号：benyzhous

application.yml 相关配置

# Server settings
server:
 port:8080
 address:localhost
# DATASOURCE
jdbc:
 driverClass: com.mysql.jdbc.Driver
 url: jdbc:mysql://127.0.0.1:3306/local-kaishustory?useUnicode=true&characterEncoding=utf-8
 username: root
 password: root
# SPRING PROFILES
spring:
 # HTTP ENCODING
 http:
  encoding.charset: UTF-8
  encoding.enable: true
  encoding.force: true
# WeiXin Configuration
weixin:
 mp:
  appid: xx
  secret: ee
  token: weixin
  aeskey:
# MyBatis
mybatis:
 typeAliasesPackage: com.modou.**.domain
 mapperLocations: classpath:/com/modou/**/mapper/*.xml
 configLocation: classpath:/mybatis-config.xml
# LOGGING
logging:
 level:
  com.ibatis:DEBUG

DataBaseConfiguration.java

package com.modou.conf.mybatis;
import java.util.ArrayList;
import java.util.List;
import javax.sql.DataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.bind.RelaxedPropertyResolver;
import org.springframework.context.EnvironmentAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.env.Environment;
import org.springframework.transaction.annotation.EnableTransactionManagement;
import com.alibaba.druid.pool.DruidDataSource;
@Configuration
@EnableTransactionManagement
public class DataBaseConfiguration implements EnvironmentAware {
 private RelaxedPropertyResolver propertyResolver;
 private static Logger log = LoggerFactory.getLogger(DataBaseConfiguration.class);
 @Override
 public void setEnvironment(Environment env) {
  this.propertyResolver = new RelaxedPropertyResolver(env, "jdbc.");
 }
 @Bean(name="writeDataSource", destroyMethod = "close", initMethod="init")
 @Primary
 public DataSource writeDataSource() {
  log.debug("Configruing Write DataSource");
  DruidDataSource datasource = new DruidDataSource();
  datasource.setUrl(propertyResolver.getProperty("url"));
  datasource.setDriverClassName(propertyResolver.getProperty("driverClassName"));
  datasource.setUsername(propertyResolver.getProperty("username"));
  datasource.setPassword(propertyResolver.getProperty("password"));
  return datasource;
 }
 @Bean(name="readOneDataSource", destroyMethod = "close", initMethod="init")
 public DataSource readOneDataSource() {
  log.debug("Configruing Read One DataSource");
  DruidDataSource datasource = new DruidDataSource();
  datasource.setUrl(propertyResolver.getProperty("url"));
  datasource.setDriverClassName(propertyResolver.getProperty("driverClassName"));
  datasource.setUsername(propertyResolver.getProperty("username"));
  datasource.setPassword(propertyResolver.getProperty("password"));
  return datasource;
 }
 @Bean(name="readTowDataSource", destroyMethod = "close", initMethod="init")
 public DataSource readTowDataSource() {
  log.debug("Configruing Read Two DataSource");
  DruidDataSource datasource = new DruidDataSource();
  datasource.setUrl(propertyResolver.getProperty("url"));
  datasource.setDriverClassName(propertyResolver.getProperty("driverClassName"));
  datasource.setUsername(propertyResolver.getProperty("username"));
  datasource.setPassword(propertyResolver.getProperty("password"));
  return datasource;
 }
 @Bean(name="readDataSources")
 public List<DataSource> readDataSources(){
  List<DataSource> dataSources = new ArrayList<DataSource>();
  dataSources.add(readOneDataSource());
  dataSources.add(readTowDataSource());
  return dataSources;
 }
}

MyBatisConfiguration.java

package com.modou.conf.mybatis;
import java.util.List;
import javax.annotation.Resource;
import javax.persistence.EntityManager;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ibatis.session.SqlSessionFactory;
import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.plugin.rw.RoundRobinRWRoutingDataSourceProxy;
import org.springframework.boot.autoconfigure.AutoConfigureAfter;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.bind.RelaxedPropertyResolver;
import org.springframework.context.EnvironmentAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.core.io.DefaultResourceLoader;
import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
/**
 *
 * 获取第二个数据库的连接信息，在application.yml中配置，并指定特定的前缀
 *
 */
@Configuration
@ConditionalOnClass({ EnableTransactionManagement.class, EntityManager.class })
@AutoConfigureAfter({ DataBaseConfiguration.class })
@MapperScan(basePackages={"com.modou.**.mapper","com.github.abel533.entity.mapper"})
public class MybatisConfiguration implements EnvironmentAware{
 private static Log logger = LogFactory.getLog(MybatisConfiguration.class);
 private RelaxedPropertyResolver propertyResolver;
 @Resource(name="writeDataSource")
 private DataSource writeDataSource;
 @Resource(name="readDataSources")
 private List<Object> readDataSources;
 @Override
 public void setEnvironment(Environment environment) {
  this.propertyResolver = new RelaxedPropertyResolver(environment,"mybatis.");
 }
 @Bean
 @ConditionalOnMissingBean
 public SqlSessionFactory sqlSessionFactory() {
  try {
   SqlSessionFactoryBean sessionFactory = new SqlSessionFactoryBean();
   sessionFactory.setDataSource(roundRobinDataSouceProxy());
   sessionFactory.setTypeAliasesPackage(propertyResolver
     .getProperty("typeAliasesPackage"));
   sessionFactory
     .setMapperLocations(new PathMatchingResourcePatternResolver()
       .getResources(propertyResolver
         .getProperty("mapperLocations")));
   sessionFactory
     .setConfigLocation(new DefaultResourceLoader()
       .getResource(propertyResolver
         .getProperty("configLocation")));
   return sessionFactory.getObject();
  } catch (Exception e) {
   logger.warn("Could not confiure mybatis session factory");
   return null;
  }
 }
 @Bean
 public RoundRobinRWRoutingDataSourceProxy roundRobinDataSouceProxy(){
  RoundRobinRWRoutingDataSourceProxy proxy = new RoundRobinRWRoutingDataSourceProxy();
  proxy.setWriteDataSource(writeDataSource);
  proxy.setReadDataSoures(readDataSources);
  proxy.setReadKey("READ");
  proxy.setWriteKey("WRITE");
  return proxy;
 }
 @Bean
 @ConditionalOnMissingBean
 public DataSourceTransactionManager transactionManager() {
  return new DataSourceTransactionManager(writeDataSource);
 }
}

Application.java

package com.modou.weixin;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import com.modou.weixin.service.HelloWorldService;
/**
 * Created by chababa on 15/8/22.
 */
@Configuration
@ComponentScan(basePackages={"com.modou.conf","com.modou.weixin"})
@EnableAutoConfiguration
public class Application implements CommandLineRunner{
 @Autowired
 HelloWorldService helloWorldService;
 public static void main(String[] args) {
  SpringApplication.run(Application.class, args);
 }
 @Override
 public void run(String... args) throws Exception {
  System.out.println(this.helloWorldService.print());
 }
}

3、maven pom.xml 相关依赖[我是基于我的多模块依赖，这里只是一个示意]，其中配置了jrebel热部署插件，需要搭配jrebel6.2.1，具体配置和下载请转向 http://blog.csdn.net/xiaoyu411502/article/details/48047369

<?xml version="1.0"?>
<project
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"
 xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <modelVersion>4.0.0</modelVersion>
 <parent>
  <groupId>com.modou.weixin</groupId>
  <artifactId>weixin-boot-parent</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <relativePath>../weixin-boot-parent</relativePath>
 </parent>
 <artifactId>weixin-boot-services</artifactId>
 <name>weixin-boot-services</name>
 <url>http://maven.apache.org</url>
 <properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <springloaded.version>1.2.4.RELEASE</springloaded.version>
 </properties>
 <dependencies>
  <dependency>
   <groupId>com.modou.weixin</groupId>
   <artifactId>weixin-boot-sdk</artifactId>
   <version>${project.version}</version>
  </dependency>
  <dependency>
   <groupId>com.modou.weixin</groupId>
   <artifactId>mybatis-plugin-rw</artifactId>
   <version>${project.version}</version>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-web</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-actuator</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-thymeleaf</artifactId>
  </dependency>
  <dependency>
   <groupId>org.springframework</groupId>
   <artifactId>spring-jdbc</artifactId>
  </dependency>
  <dependency>
   <groupId>javax.persistence</groupId>
   <artifactId>persistence-api</artifactId>
  </dependency>
  <dependency>
   <groupId>org.mybatis</groupId>
   <artifactId>mybatis</artifactId>
  </dependency>
  <dependency>
   <groupId>org.mybatis</groupId>
   <artifactId>mybatis-spring</artifactId>
  </dependency>
  <dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>druid</artifactId>
  </dependency>
  <dependency>
   <groupId>mysql</groupId>
   <artifactId>mysql-connector-java</artifactId>
  </dependency>
  <dependency>
   <groupId>com.github.pagehelper</groupId>
   <artifactId>pagehelper</artifactId>
  </dependency>
  <dependency>
   <groupId>tk.mybatis</groupId>
   <artifactId>mapper</artifactId>
  </dependency>
  <dependency>
   <groupId>org.mybatis.generator</groupId>
   <artifactId>mybatis-generator-core</artifactId>
  </dependency>
 </dependencies>
</project>

以上所述是小编给大家介绍的Spring boot整合Mybatis的方法，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持！

原文链接：http://blog.csdn.net/xiaoyu411502/article/details/48164311