The content of this article is about springboot's method of configuring JdbcTemplate using multiple data sources. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.
springboot multiple data source configuration, the code is as follows
DataSourceConfig
package com.rookie.bigdata.config;
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.core.JdbcTemplate;
import javax.sql.DataSource;
/**
* @author
* @date 2018/10/10
*/
@Configuration
public class DataSourceConfig {
@Bean(name = "primaryDataSource")
@Qualifier("primaryDataSource")
@ConfigurationProperties(prefix="spring.datasource.primary")
public DataSource primaryDataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "secondaryDataSource")
@Qualifier("secondaryDataSource")
@Primary
@ConfigurationProperties(prefix="spring.datasource.secondary")
public DataSource secondaryDataSource() {
return DataSourceBuilder.create().build();
}
@Bean(name = "primaryJdbcTemplate")
public JdbcTemplate primaryJdbcTemplate(
@Qualifier("primaryDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
@Bean(name = "secondaryJdbcTemplate")
public JdbcTemplate secondaryJdbcTemplate(
@Qualifier("secondaryDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
} StudentServiceImpl
package com.rookie.bigdata.service;
import com.rookie.bigdata.domain.Student;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
/**
* @author
* @date 2018/10/9
*/
@Service
public class StudentServiceImpl implements StudentService {
@Autowired
@Qualifier("primaryJdbcTemplate")
private JdbcTemplate jdbcTemplate;
@Autowired
@Qualifier("secondaryJdbcTemplate")
private JdbcTemplate jdbcTemplate2;
/**
* 采用第一个暑假源进行插入数据
* @param student
*/
@Override
public void create(Student student) {
jdbcTemplate.update("INSERT INTO student(stu_no,name,age)VALUE (?,?,?)", student.getStuNo(), student.getName(), student.getAge());
}
/**
* 第一个数据源进行插入数据
* @param stuNo
*/
@Override
public void deleteByNo(Integer stuNo) {
jdbcTemplate.update("DELETE FROM student WHERE stu_no=?", stuNo);
}
/**
* 第二个数据源进行查询数据
* @param stuNo
* @return
*/
@Override
public Integer queryByStuNo(Integer stuNo) {
return jdbcTemplate2.queryForObject("select count(1) from student", Integer.class);
}
}Configuration file application.properties
spring.datasource.primary.url=jdbc:mysql://localhost:3306/springboot spring.datasource.primary.username=root spring.datasource.primary.password=root spring.datasource.primary.driver-class-name=com.mysql.jdbc.Driver spring.datasource.secondary.url=jdbc:mysql://localhost:3306/springboot spring.datasource.secondary.username=root spring.datasource.secondary.password=root spring.datasource.secondary.driver-class-name=com.mysql.jdbc.Driver
The test code is as follows
package com.rookie.bigdata.service;
import com.rookie.bigdata.domain.Student;
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;
/**
* @author liuxili
* @date 2018/10/10
*/
@RunWith(SpringRunner.class)
@SpringBootTest
public class StudentServiceImplTest {
@Autowired
private StudentServiceImpl studentService;
@Test
public void create1() throws Exception {
Student student = new Student();
student.setStuNo(1L);
student.setName("张三");
student.setAge(23);
studentService.create(student);
}
@Test
public void deleteByName1() throws Exception {
studentService.deleteByNo(1);
}
@Test
public void queryByStuNo1() throws Exception {
System.out.println(studentService.queryByStuNo(1));
}
}The following exception will occur during operation. The operation fails and java.lang.IllegalArgumentException is reported: jdbcUrl is required with driverClassName.Exception
After checking the information, I found that the reason for this problem is due to the springboot version. The springboot version used in this example is 2.0.5. If the version is changed to a version before 1.5, it will not work. The above problems will occur. In fact, there are two main solutions to solve the above exceptions.
Solution 1:
Modify the application.properties configuration file according to the following scheme, as follows: After the modification is completed, The above exception will not occur again
spring.datasource.primary.jdbc-url=jdbc:mysql://localhost:3306/springboot spring.datasource.primary.username=root spring.datasource.primary.password=root spring.datasource.primary.driver-class-name=com.mysql.jdbc.Driver spring.datasource.secondary.jdbc-url=jdbc:mysql://localhost:3306/springboot spring.datasource.secondary.username=root spring.datasource.secondary.password=root spring.datasource.secondary.driver-class-name=com.mysql.jdbc.Driver
Option 2:
Do not modify the original application.properties configuration file, modify the information in the DataSourceConfig class, as follows: After the modification is completed, the exception will It will no longer appear that it can run normally
application.properties
spring.datasource.primary.url=jdbc:mysql://localhost:3306/springboot spring.datasource.primary.username=root spring.datasource.primary.password=root spring.datasource.primary.driver-class-name=com.mysql.jdbc.Driver spring.datasource.secondary.url=jdbc:mysql://localhost:3306/springboot spring.datasource.secondary.username=root spring.datasource.secondary.password=root spring.datasource.secondary.driver-class-name=com.mysql.jdbc.Driver
DataSourceConfig
package com.rookie.bigdata.config;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
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.jdbc.core.JdbcTemplate;
import javax.sql.DataSource;
/**
* @author
* @date 2018/10/10
*/
@Configuration
public class DataSourceConfig {
@Bean(name = "primaryJdbcTemplate")
public JdbcTemplate primaryJdbcTemplate(
@Qualifier("primaryDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
@Bean(name = "secondaryJdbcTemplate")
public JdbcTemplate secondaryJdbcTemplate(
@Qualifier("primaryDataSource") DataSource dataSource) {
return new JdbcTemplate(dataSource);
}
@Primary
@Bean(name = "primaryDataSourceProperties")
@Qualifier("primaryDataSourceProperties")
@ConfigurationProperties(prefix = "spring.datasource.primary")
public DataSourceProperties primaryDataSourceProperties() {
return new DataSourceProperties();
}
@Bean(name = "secondaryDataSourceProperties")
@Qualifier("secondaryDataSourceProperties")
@ConfigurationProperties(prefix = "spring.datasource.secondary")
public DataSourceProperties secondaryDataSourceProperties() {
return new DataSourceProperties();
}
@Primary
@Bean(name = "primaryDataSource")
@Qualifier("primaryDataSource")
@ConfigurationProperties(prefix = "spring.datasource.primary")
public DataSource primaryDataSource() {
return primaryDataSourceProperties().initializeDataSourceBuilder().build();
}
@Bean(name = "secondaryDataSource")
@Qualifier("secondaryDataSource")
@ConfigurationProperties(prefix = "spring.datasource.secondary")
public DataSource secondaryDataSource() {
return primaryDataSourceProperties().initializeDataSourceBuilder().build();
}
}At this point, springboot uses multiple data sources to configure JdbcTemplate and has a perfect solution
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