网上有说是pom.xml里面版本问题,但无论我怎么试都没成功
org.springframework.boot
spring-boot-starter-data-jpa
运气好百度到一篇相关的
配置数据源的文件,下面是导致报错的例子
package com.Config;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages="com.dao1",
entityManagerFactoryRef = "entityManagerFactoryBeanOne",
transactionManagerRef = "platformTransactionManagerOne")
public class JpaConfigOne {
@Resource(name="dsOne")
@Autowired
DataSource dsOne;
@Autowired
JpaProperties jpaProperties;
@Bean
@Primary
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBeanOne(EntityManagerFactoryBuilder builder) {
return builder.dataSource(dsOne)
.properties(jpaProperties.getProperties())
.packages("com.pojo")
.persistenceUnit("pul")
.build();
}
@Bean
public PlatformTransactionManager platformTransactionManagerOne(EntityManagerFactoryBuilder builder) {
LocalContainerEntityManagerFactoryBean factoryOne= entityManagerFactoryBeanOne(builder);
return new JpaTransactionManager(factoryOne.getObject());
}
}
后来我在数据源dsOne上面改了一行,改成@Qualifier(“dataSource1”)
package com.Config;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages="com.dao1",
entityManagerFactoryRef = "entityManagerFactoryBeanOne",
transactionManagerRef = "platformTransactionManagerOne")
public class JpaConfigOne {
// @Resource(name="dsOne")
@Autowired
@Qualifier("dataSource1")
DataSource dsOne;
@Autowired
JpaProperties jpaProperties;
@Bean
@Primary
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBeanOne(EntityManagerFactoryBuilder builder) {
return builder.dataSource(dsOne)
.properties(jpaProperties.getProperties())
.packages("com.pojo")
.persistenceUnit("pul")
.build();
}
@Bean
public PlatformTransactionManager platformTransactionManagerOne(EntityManagerFactoryBuilder builder) {
LocalContainerEntityManagerFactoryBean factoryOne= entityManagerFactoryBeanOne(builder);
return new JpaTransactionManager(factoryOne.getObject());
}
}
然后配置数据源的文件也加一行,里面有@Qualifier(“dataSource1”)就成功了
package com.Config;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Qualifier;
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 com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
@Configuration
public class DataSourceConfig {
@Bean
@Qualifier("dataSource1")
@Primary
@ConfigurationProperties("spring.datasource.one")
DataSource dsOne() {
return DruidDataSourceBuilder.create().build();
}
@Bean
@Qualifier("dataSource2")
@ConfigurationProperties("spring.datasource.two")
DataSource dsTwo() {
return DruidDataSourceBuilder.create().build();
}
}
<?xml version="1.0" encoding="UTF-8"?>
<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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.tgb</groupId>
<artifactId>test3</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>test3 Maven Webapp</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.4.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
<version>1.1.10</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.9</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.3.Final</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<build>
<finalName>test3</finalName>
<pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>3.1.0</version>
</plugin>
<!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>3.0.2</version>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.22.1</version>
</plugin>
<plugin>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.2</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.2</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.2</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
application.properties
spring.datasource.one.url=jdbc:mysql://localhost:3306/springtest?characterEncoding=UTF-8&useSSL=false
spring.datasource.one.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.one.username=root
spring.datasource.one.password=1234567
spring.datasource.two.url=jdbc:mysql://localhost:3306/scrapy_news?characterEncoding=UTF-8&useSSL=false
spring.datasource.two.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.two.username=root
spring.datasource.two.password=1234567
spring.jpa.hibernate.ddl-auto=update
spring.jpa.database:mysql
spring.jpa.properties.show-sql=true
User.java
package com.pojo;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity(name = "chapter05")
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String name;
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;
}
@Override
public String toString() {
return "Book [id=" + id + ", name=" + name + "]";
}
}
BootApplication.java
package com.main;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
import org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
@ComponentScan("com")
@SpringBootApplication()
@EnableAutoConfiguration(exclude = { DataSourceAutoConfiguration.class,WebMvcAutoConfiguration.class })
public class BootApplication {
public static void main(String[] args) {
SpringApplication.run(BootApplication.class, args);
}
}
UserDao2.java
package com.dao2;
import org.springframework.data.jpa.repository.JpaRepository;
import com.pojo.User;
public interface UserDao2 extends JpaRepository<User,Integer>{
}
UserDao.java
package com.dao1;
import org.springframework.data.jpa.repository.JpaRepository;
import com.pojo.User;
public interface UserDao extends JpaRepository<User,Integer>{
}
UserController.java
package com.Controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import com.dao1.UserDao;
import com.dao2.UserDao2;
import com.pojo.User;
@RestController
public class UserController {
@Autowired
UserDao userDao;
@Autowired
UserDao2 userDao2;
@GetMapping("/test")
public void test1() {
User u1=new User();
u1.setName("11");
userDao.save(u1);
User u2=new User();
u2.setName("22");
userDao2.save(u2);
}
}
JpaConfigTwo.java
package com.Config;
import javax.annotation.Resource;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages="com.dao2",
entityManagerFactoryRef = "entityManagerFactoryBeanTwo",
transactionManagerRef = "platformTransactionManagerTwo")
public class JpaConfigTwo {
// @Resource(name="dsTwo")
@Autowired
@Qualifier("dataSource2")
DataSource dsTwo;
@Autowired
JpaProperties jpaProperties;
@Bean
LocalContainerEntityManagerFactoryBean entityManagerFactoryBeanTwo(EntityManagerFactoryBuilder builder) {
return builder.dataSource(dsTwo)
.properties(jpaProperties.getProperties())
.packages("com.pojo")
.persistenceUnit("pul")
.build();
}
@Bean
PlatformTransactionManager platformTransactionManagerTwo(EntityManagerFactoryBuilder builder) {
LocalContainerEntityManagerFactoryBean factoryTwo= entityManagerFactoryBeanTwo(builder);
return new JpaTransactionManager(factoryTwo.getObject());
}
}
JpaConfigOne.java
package com.Config;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.orm.jpa.JpaProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.transaction.PlatformTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;
@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages="com.dao1",
entityManagerFactoryRef = "entityManagerFactoryBeanOne",
transactionManagerRef = "platformTransactionManagerOne")
public class JpaConfigOne {
// @Resource(name="dsOne")
@Autowired
@Qualifier("dataSource1")
DataSource dsOne;
@Autowired
JpaProperties jpaProperties;
@Bean
@Primary
public LocalContainerEntityManagerFactoryBean entityManagerFactoryBeanOne(EntityManagerFactoryBuilder builder) {
return builder.dataSource(dsOne)
.properties(jpaProperties.getProperties())
.packages("com.pojo")
.persistenceUnit("pul")
.build();
}
@Bean
public PlatformTransactionManager platformTransactionManagerOne(EntityManagerFactoryBuilder builder) {
LocalContainerEntityManagerFactoryBean factoryOne= entityManagerFactoryBeanOne(builder);
return new JpaTransactionManager(factoryOne.getObject());
}
}
DataSourceConfig.java
package com.Config;
import javax.sql.DataSource;
import org.springframework.beans.factory.annotation.Qualifier;
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 com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
@Configuration
public class DataSourceConfig {
@Bean
@Qualifier("dataSource1")
@Primary
@ConfigurationProperties("spring.datasource.one")
DataSource dsOne() {
return DruidDataSourceBuilder.create().build();
}
@Bean
@Qualifier("dataSource2")
@ConfigurationProperties("spring.datasource.two")
DataSource dsTwo() {
return DruidDataSourceBuilder.create().build();
}
}