首页 > 其他分享> > 夜光带你走进我擅长的领域：SpringBOOT（5）

夜光带你走进我擅长的领域：SpringBOOT（5）

2019-08-18 10:41:21 作者：互联网

夜光序言：

打一个巴掌，再给一颗糖，反反复复，你什么时候才明白，ta只是没那么喜欢你。这世上没有谁会永远等谁，更没有谁会永远相信谁。

正文：

4.4.2创建分包Mapper

public interface User1Mapper {

@Insert("insert into users values(null,#{name},#{age});")

public int addUser(@Param("name") String name, @Param("age") Integer age);

}

4.4.3启动项目

@ComponentScan(basePackages = "com.Genius")

@EnableAutoConfiguration

public class App {

public static void main(String[] args) {

SpringApplication.run(App.class, args);

}

No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: test1DataSource,test2DataSource

事物管理

5.1.1springboot整合事物管理

springboot默认集成事物,只主要在方法上加上@Transactional即可

5.1.2SpringBoot分布式事物管理

使用springboot+jta+atomikos 分布式事物管理

5.1.2.1新增配置文件信息

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-jta-atomikos</artifactId>

</dependency>

5.1.2.2新增配置文件信息

# Mysql 1

mysql.datasource.test.url = jdbc:mysql://localhost:3306/test01?useUnicode=true&characterEncoding=utf-8

mysql.datasource.test.username = root

mysql.datasource.test.password = root

mysql.datasource.test.minPoolSize = 3

mysql.datasource.test.maxPoolSize = 25

mysql.datasource.test.maxLifetime = 20000

mysql.datasource.test.borrowConnectionTimeout = 30

mysql.datasource.test.loginTimeout = 30

mysql.datasource.test.maintenanceInterval = 60

mysql.datasource.test.maxIdleTime = 60

mysql.datasource.test.testQuery = select 1

# Mysql 2

mysql.datasource.test2.url =jdbc:mysql://localhost:3306/test02?useUnicode=true&characterEncoding=utf-8

mysql.datasource.test2.username =root

mysql.datasource.test2.password =root

mysql.datasource.test2.minPoolSize = 3

mysql.datasource.test2.maxPoolSize = 25

mysql.datasource.test2.maxLifetime = 20000

mysql.datasource.test2.borrowConnectionTimeout = 30

mysql.datasource.test2.loginTimeout = 30

mysql.datasource.test2.maintenanceInterval = 60

mysql.datasource.test2.maxIdleTime = 60

mysql.datasource.test2.testQuery = select 1

5.1.2.3 读取配置文件信息

package com.Genius.config;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(prefix = "mysql.datasource.test")

public class DBConfig1 {

private String url;

private String username;

private String password;

private int minPoolSize;

private int maxPoolSize;

private int maxLifetime;

private int borrowConnectionTimeout;

private int loginTimeout;

private int maintenanceInterval;

private int maxIdleTime;

private String testQuery;

}

package com.Genius.config;

import org.springframework.boot.context.properties.ConfigurationProperties;

@ConfigurationProperties(prefix = "mysql.datasource.test1")

public class DBConfig2 {

private String url;

private String username;

private String password;

private int minPoolSize;

private int maxPoolSize;

private int maxLifetime;

private int borrowConnectionTimeout;

private int loginTimeout;

private int maintenanceInterval;

private int maxIdleTime;

private String testQuery;

}

5.1.2.4 创建多数据源

@Configuration

// basePackages 最好分开配置如果放在同一个文件夹可能会报错

@MapperScan(basePackages = "com.Genius.test01", sqlSessionTemplateRef = "testSqlSessionTemplate")

public class TestMyBatisConfig1 {

// 配置数据源

@Primary

@Bean(name = "testDataSource")

public DataSource testDataSource(DBConfig1 testConfig) throws SQLException {

MysqlXADataSource mysqlXaDataSource = new MysqlXADataSource();

mysqlXaDataSource.setUrl(testConfig.getUrl());

mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);

mysqlXaDataSource.setPassword(testConfig.getPassword());

mysqlXaDataSource.setUser(testConfig.getUsername());

mysqlXaDataSource.setPinGlobalTxToPhysicalConnection(true);

AtomikosDataSourceBean xaDataSource = new AtomikosDataSourceBean();

xaDataSource.setXaDataSource(mysqlXaDataSource);

xaDataSource.setUniqueResourceName("testDataSource");

xaDataSource.setMinPoolSize(testConfig.getMinPoolSize());

xaDataSource.setMaxPoolSize(testConfig.getMaxPoolSize());

xaDataSource.setMaxLifetime(testConfig.getMaxLifetime());

xaDataSource.setBorrowConnectionTimeout(testConfig.getBorrowConnectionTimeout());

xaDataSource.setLoginTimeout(testConfig.getLoginTimeout());

xaDataSource.setMaintenanceInterval(testConfig.getMaintenanceInterval());

xaDataSource.setMaxIdleTime(testConfig.getMaxIdleTime());

xaDataSource.setTestQuery(testConfig.getTestQuery());

return xaDataSource;

}

@Bean(name = "testSqlSessionFactory")

public SqlSessionFactory testSqlSessionFactory(@Qualifier("testDataSource") DataSource dataSource)

throws Exception {

SqlSessionFactoryBean bean = new SqlSessionFactoryBean();

bean.setDataSource(dataSource);

return bean.getObject();

}

@Bean(name = "testSqlSessionTemplate")

public SqlSessionTemplate testSqlSessionTemplate(

@Qualifier("testSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {

return new SqlSessionTemplate(sqlSessionFactory);

}

package com.Genius.datasource;

import java.sql.SQLException;

import javax.sql.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.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import com.atomikos.jdbc.AtomikosDataSourceBean;

import com.Genius.config.DBConfig1;

import com.mysql.jdbc.jdbc2.optional.MysqlXADataSource;

@Configuration

// basePackages 最好分开配置如果放在同一个文件夹可能会报错

@MapperScan(basePackages = "com.Genius.test02", sqlSessionTemplateRef = "test2SqlSessionTemplate")

public class TestMyBatisConfig2 {

// 配置数据源

@Bean(name = "test2DataSource")