I'm new with Springboot. I try to access multiple database (mysql Docker container) with Springboot and came across with this error.Here is the error:
Description:
Field userRepository in com.example.demo.MainController required a bean named 'UserEntityManagerFactory' that could not be found.
The injection point has the following annotations:
- @org.springframework.beans.factory.annotation.Autowired(required=true)
Action:
Consider defining a bean named 'UserEntityManagerFactory' in your configuration.
I had try some suggestions on google but it not work. For example, fix the pom to
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
or fix the port of database.
Could you guy give me some advice to fix this error?
Here is my code :
User Configure
import com.example.demo.Entity.use.User;
import com.zaxxer.hikari.HikariDataSource;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.context.properties.ConfigurationProperties;
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;
import javax.sql.DataSource;
@Configuration
@EnableTransactionManagement
@EntityScan()
@EnableJpaRepositories(basePackages = "com.example.demo.Repo.use",
entityManagerFactoryRef = "UserEntityManagerFactory",
transactionManagerRef= "UserTransactionManager"
)
public class UserConfiguration {
@Bean
@Primary
@ConfigurationProperties("app.datasource.user")
public DataSourceProperties UserDataSourceProperties() {
return new DataSourceProperties();
}
@Bean
@Primary
@ConfigurationProperties("app.datasource.user.configuration")
public DataSource UserDataSource() {
return UserDataSourceProperties().initializeDataSourceBuilder()
.type(HikariDataSource.class).build();
}
@Primary
@Bean(name = "memberEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean UserEntityManagerFactory(EntityManagerFactoryBuilder builder) {
return builder
.dataSource(UserDataSource())
.packages(User.class)
.build();
}
@Primary
@Bean
public PlatformTransactionManager memberTransactionManager(
final @Qualifier("UserEntityManagerFactory") LocalContainerEntityManagerFactoryBean UserEntityManagerFactory) {
return new JpaTransactionManager(UserEntityManagerFactory.getObject());
}
}
Tax Configure
import org.apache.commons.dbcp.BasicDataSource;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.autoconfigure.jdbc.DataSourceProperties;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.boot.orm.jpa.EntityManagerFactoryBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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 javax.sql.DataSource;
import com.example.demo.Entity.table.Tax;
@Configuration
@EnableJpaRepositories(basePackages = "com.example.demo.Repo.table",
entityManagerFactoryRef = "TaxEntityManagerFactory",
transactionManagerRef= "TaxTransactionManager")
public class TaxTableConfiguration {
@Bean
@ConfigurationProperties("app.datasource.tax")
public DataSourceProperties TaxDataSourceProperties() {
return new DataSourceProperties();
}
@Bean
@ConfigurationProperties("app.datasource.tax.configuration")
public DataSource TaxDataSource() {
return TaxDataSourceProperties().initializeDataSourceBuilder()
.type(BasicDataSource.class).build();
}
@Bean(name = "TaxEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean TaxEntityManagerFactory(
EntityManagerFactoryBuilder builder) {
return builder
.dataSource(TaxDataSource())
.packages(Tax.class)
.build();
}
@Bean
public PlatformTransactionManager TaxTransactionManager(
final @Qualifier("TaxEntityManagerFactory") LocalContainerEntityManagerFactoryBean TaxEntityManagerFactory) {
return new JpaTransactionManager(TaxEntityManagerFactory.getObject());
}
}
Controller
import com.example.demo.Entity.use.User;
import com.example.demo.Repo.use.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller // This means that this class is a Controller
@RequestMapping(path="/demo") // This means URL's start with /demo (after Application path)
public class MainController {
@Autowired // This means to get the bean called userRepository
// Which is auto-generated by Spring, we will use it to handle the data
private UserRepository userRepository;
@PostMapping(path="/add") // Map ONLY POST Requests
public @ResponseBody String addNewUser (@RequestParam String fname,@RequestParam String lname,
@RequestParam Integer p_a_salary,@RequestParam Float super_rate,@RequestParam String payment_date ) {
// @ResponseBody means the returned String is the response, not a view name
// @RequestParam means it is a parameter from the GET or POST request
User n = new User();
n.setlName(lname);
n.setfName(fname);
n.set_anual_salary(p_a_salary);
n.set_super_rate(super_rate);
n.set_payment_date(payment_date);
userRepository.save(n);
return "Saved";
}
@GetMapping(path="/all")
public @ResponseBody Iterable<User> getAllUsers() {
// This returns a JSON or XML with the users
return userRepository.findAll();
}
}
Application
#first db :
app.datasource.user.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/taxdb
app.datasource.user.username=user
app.datasource.user.password=password
app.datasource.user.driverClassName=com.mysql.jdbc.Driver
#second db:
app.datasource.tax.url=jdbc:mysql://${MYSQL_HOST:localhost}:3306/calculatedb
app.datasource.tax.username=user
app.datasource.tax.password=password
app.datasource.tax.driverClassName=com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
spring.jpa.show-sql=true
spring.jpa.database=mysql
server.port = 8080
pom.xml
<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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.1</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
<commons.dbcp.version>1.4</commons.dbcp.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</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>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>${commons.dbcp.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
**User Entity **
package com.example.demo.Entity.use;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity // This tells Hibernate to make a table out of this class
public class User {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
private String fname;
private String lname;
private String payment_date;
private Integer p_a_salary;
private Float super_rate;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getfName() {
return fname;
}
public void setfName(String fname) {
this.fname = fname;
}
public String getlName() {
return lname;
}
public void setlName(String lname) {
this.lname = lname;
}
public String get_payment_date() {
return payment_date;
}
public void set_payment_date(String payment_date) {
this.payment_date = payment_date;
}
public Integer get_anual_salary() {
return p_a_salary;
}
public void set_anual_salary(Integer p_a_salary) {
this.p_a_salary = p_a_salary;
}
public Float get_super_rate() {
return super_rate;
}
public void set_super_rate(Float super_rate) {
this.super_rate = super_rate;
}
}
Tax Entity
package com.example.demo.Entity.table;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity // This tells Hibernate to make a table out of this class
public class Tax {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
private String taxable_income;
private Double addition_charge;
private Double charge_every_one_dollar;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String get_TaxableIncome() {
return taxable_income;
}
public void set_TaxableIncome(String taxable_income) {
this.taxable_income = taxable_income;
}
public Double get_addition_charge() {
return addition_charge;
}
public void set_additonal_charge(Double addition_charge) {
this.addition_charge = addition_charge;
}
public Double get_charge_every_one_dollar() {
return charge_every_one_dollar;
}
public void set_charge_every_one_dollar(Double charge_every_one_dollar) {
this.charge_every_one_dollar = charge_every_one_dollar;
}
}
User repository
package com.example.demo.Repo.use;
import com.example.demo.Entity.use.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
// This will be AUTO IMPLEMENTED by Spring into a Bean called userRepository
// CRUD refers Create, Read, Update, Delete
@Repository
public interface UserRepository extends JpaRepository<User, Integer> {
}
Tax Repository
import com.example.demo.Entity.table.Tax;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface taxtableRepository extends JpaRepository<Tax ,Integer> {
}
Looks like you should change @Bean(name = "memberEntityManagerFactory")
to @Bean(name = "UserEntityManagerFactory")
in UserConfiguration.java
, because you use UserEntityManagerFactory
as a bean name in all other places.
@EnableJpaRepositories(basePackages = "com.example.demo.Repo.use",
entityManagerFactoryRef = "UserEntityManagerFactory",
transactionManagerRef= "UserTransactionManager"
)
There are some misconfiguration above annotation. UserEntityManagerFactory and UserTransactionManager do not exists
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.