異常
ConfigServletWebServerApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userController’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userServiceImpl’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userDao’ defined in com.william.dao.UserDao defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Cannot resolve reference to bean ‘jpaMappingContext’ while setting bean property ‘mappingContext’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘jpaMappingContext’: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.william.domain.User
org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userController’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userServiceImpl’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘userDao’ defined in com.william.dao.UserDao defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Cannot resolve reference to bean ‘jpaMappingContext’ while setting bean property ‘mappingContext’; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘jpaMappingContext’: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: No identifier specified for entity: com.william.domain.User
異常原因翻譯:
ConfigServletWebServerApplicationContext:在上下文初始化期間遇到的異常——取消刷新嘗試:org.springframework.bean .factory。BeanCreationException:創建名爲“userController”的bean時出錯:注入資源依賴失敗;嵌套異常是org.springframe .bean .factory。BeanCreationException:創建名爲“userServiceImpl”的bean時出錯:注入資源依賴失敗;嵌套異常是org.springframe .bean .factory。BeanCreationException:創建名爲“userDao”的bean時出錯,該bean在com. williams .dao中定義。UserDao定義在jpareposoriesregistrar上聲明的@ enablejparepospos存中。EnableJpaRepositoriesConfiguration:在設置bean屬性“mappingContext”時無法解析對bean“jpaMappingContext”的引用;嵌套異常是org.springframe .bean .factory。創建名爲“jpaMappingContext”的bean時出錯:init方法調用失敗;嵌套異常是org.hibernate。註釋異常:沒有爲實體指定標識符:com. williams .domain. user
問題根本原因:
註釋異常:沒有爲實體指定標識符:com. williams .domain. user
實體類加入@Id
package com.william.domain;
import javax.persistence.*;
/**
* @author :lijunxuan
* @date :Created in 2020/5/30 12:29
* @description :
* @version: 1.0
*/
@Table(name = "user")
@Entity
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String username;
private String password;
private String name;
@Override
public String toString() {
return "User{" +
"id=" + id +
", username='" + username + '\'' +
", password='" + password + '\'' +
", name='" + name + '\'' +
'}';
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}