试图让以下应用程序运行但是一直面临错误，这似乎告诉我我的实体经理有问题。感谢您提前提供任何帮助。
配置：
@Configuration
public class Config {
@Bean
@Primary
@ConfigurationProperties(prefix = "spring.ds_buyer")
public DataSource buyerDataSource(){
return DataSourceBuilder.create().build();
}
@Bean
@ConfigurationProperties(prefix = "spring.ds_toner")
public DataSource tonerDataSource(){
return DataSourceBuilder.create().build();
}
@Bean
@ConfigurationProperties(prefix = "spring.ds_manager")
public DataSource managerDataSource(){
return DataSourceBuilder.create().build();
}
}
实体1：
@Entity
@Table(schema = "toner_buyer")
public class Buyer {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "BUYER_ID")
private int buyerId;
@Column(name = "FIRST_NAME")
private String firstName;
@Column(name = "LAST_NAME")
private String lastName;
@Column(name = "BUYER_ADDRESS")
private String buyerAddress;
@ManyToOne
@JoinColumn(name = "MANG_ID")
private Manager manager;
@OneToMany(targetEntity = Toner.class, mappedBy = "buyer",
cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private Set<Toner> toners;
public Buyer(){}
public Buyer(String firstName, String lastName, String buyerAddress, Set<Toner> buyerToner) {
this.firstName = firstName;
this.lastName = lastName;
this.buyerAddress = buyerAddress;
this.toners = buyerToner;
}
public int getBuyerId() {
return buyerId;
}
public void setBuyerId(int buyerId) {
this.buyerId = buyerId;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getBuyerAddress() {
return buyerAddress;
}
public void setBuyerAddress(String buyerAddress) {
this.buyerAddress = buyerAddress;
}
public Set<Toner> getBuyerToner() {
return toners;
}
public void setBuyerToner(Set<Toner> buyerToner) {
this.toners = buyerToner;
}
}
实体2：
@Entity
@Table(schema = "toner_manager")
public class Manager {
@GeneratedValue(strategy = GenerationType.AUTO)
@Id
@Column(name = "MANG_ID")
private int mid;
@Column(name = "FIRST_NAME")
private String firstName;
@Column(name = "LAST_NAME")
private System lastName;
@OneToMany(targetEntity = Buyer.class, mappedBy = "manager", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private Set<Buyer> buyers;
}
实体3：
@Entity
@Table(schema = "toner_stock")
public class Toner {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "TONER_ID")
private long id;
@Column(name = "TONER_NAME")
private String tonerName;
@Column(name = "TONER_PRICE")
private int tonerPrice;
@Column(name = "TONER_QUANTITY")
private int tonerQuantity;
@ManyToOne
@JoinColumn(name = "BUYER_ID")
private Buyer buyer;
public Toner(){}
public Toner(int tonerId){
this.id = tonerId;
}
public Toner(String tonerName, int tonerPrice, int tonerQuantity) {
this.tonerName = tonerName;
this.tonerPrice = tonerPrice;
this.tonerQuantity = tonerQuantity;
}
@Override
public String toString() {
return "Toner{" +
"id=" + id +
", tonerName='" + tonerName + '\'' +
", tonerPrice=" + tonerPrice +
", tonerQuantity=" + tonerQuantity +
'}';
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getTonerName() {
return tonerName;
}
public void setTonerName(String tonerName) {
this.tonerName = tonerName;
}
public int getTonerPrice() {
return tonerPrice;
}
public void setTonerPrice(int tonerPrice) {
this.tonerPrice = tonerPrice;
}
public int getTonerQuantity() {
return tonerQuantity;
}
public void setTonerQuantity(int tonerQuantity) {
this.tonerQuantity = tonerQuantity;
}
}
application.properties：
spring.ds_toner.url = jdbc:mysql://localhost:3306/toner_stock?useSSL=false
spring.ds_toner.username=toner
spring.ds_toner.password=toner
spring.ds_toner.driver-class-name=com.mysql.jdbc.Driver
spring.ds_manager.url=jdbc:mysql://localhost:3306/toner_manager?useSSL=false
spring.ds_manager.username=toner
spring.ds_manager.password=toner
spring.ds_manager.driver-class-name= com.mysql.jdbc.Driver
spring.ds_buyer.url= jdbc:mysql://localhost:3306/toner_buyer?useSSL=false
spring.ds_buyer.username=toner
spring.ds_buyer.password=toner
spring.ds_buyer.driver-class-name= com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto=create-drop
spring.jpa.hibernate.show-sql=true
spring.jpa.hibernate.dialect= org.hibernate.dialect.MySQL55Dialect
spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate5.SpringSessionContext
波姆：
<?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.ronone</groupId>
<artifactId>TonerStock</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.9.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-commons -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>1.13.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.9.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-commons -->
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf-spring3 -->
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf-spring3</artifactId>
<version>3.0.3.RELEASE</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
打印跟踪：
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.2.RELEASE)
2017-05-13 08:00:06.542 INFO 657 --- [ main] com.ronone.Application : Starting Application on Ronalds-MacBook-Pro.local with PID 657 (/Users/ronaldpitt/Desktop/TonerStock/target/classes started by ronaldpitt in /Users/ronaldpitt/Desktop/TonerStock)
2017-05-13 08:00:06.546 INFO 657 --- [ main] com.ronone.Application : No active profile set, falling back to default profiles: default
2017-05-13 08:00:06.823 INFO 657 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@77be656f: startup date [Sat May 13 08:00:06 EDT 2017]; root of context hierarchy
2017-05-13 08:00:08.549 INFO 657 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$fd5e7927] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-05-13 08:00:09.005 INFO 657 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-05-13 08:00:09.031 INFO 657 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat
2017-05-13 08:00:09.032 INFO 657 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.11
2017-05-13 08:00:09.204 INFO 657 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2017-05-13 08:00:09.206 INFO 657 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2386 ms
2017-05-13 08:00:09.432 INFO 657 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2017-05-13 08:00:09.438 INFO 657 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-05-13 08:00:09.439 INFO 657 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-05-13 08:00:09.439 INFO 657 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-05-13 08:00:09.439 INFO 657 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*]
2017-05-13 08:00:10.420 INFO 657 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2017-05-13 08:00:10.453 INFO 657 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2017-05-13 08:00:10.598 INFO 657 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.2.9.Final}
2017-05-13 08:00:10.600 INFO 657 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2017-05-13 08:00:10.822 INFO 657 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2017-05-13 08:00:11.014 INFO 657 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL5Dialect
2017-05-13 08:00:11.320 WARN 657 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
2017-05-13 08:00:11.327 INFO 657 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat
2017-05-13 08:00:11.346 INFO 657 --- [ main] utoConfigurationReportLoggingInitializer :
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-05-13 08:00:11.355 ERROR 657 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1081) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:856) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151) [spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at com.ronone.Application.main(Application.java:9) [classes/:na]
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:967) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:892) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:353) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:370) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:359) ~[spring-orm-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
... 16 common frames omitted
Caused by: org.hibernate.MappingException: Could not determine type for: java.lang.System, at table: manager, for columns: [org.hibernate.mapping.Column(last_name)]
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:455) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:422) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.mapping.Property.isValid(Property.java:226) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:597) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.mapping.RootClass.validate(RootClass.java:265) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:329) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:889) ~[hibernate-core-5.2.9.Final.jar:5.2.9.Final]
... 22 common frames omitted
Process finished with exit code 1
答案 0 :(得分：1)
可能的类型：
public class Manager {
private System lastName;
}
您可能需要＆＃39;私人字符串 lastName＆＃39;