Java 找不到类型用户(JPA)的属性lastname
User.java:Java 找不到类型用户(JPA)的属性lastname,java,spring,spring-mvc,jpa,Java,Spring,Spring Mvc,Jpa,User.java: package com.hodor.booking.jpa.domain; import javax.persistence.Entity; import java.util.Date; @Entity public class User extends AbstractPersistable { private String firstName; private String lastName; private String email;
package com.hodor.booking.jpa.domain;
import javax.persistence.Entity;
import java.util.Date;
@Entity
public class User extends AbstractPersistable {
private String firstName;
private String lastName;
private String email;
private Date birthday;
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getEmail() {
return email;
}
public Date getBirthday() {
return birthday;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setEmail(String email) {
this.email = email;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
UserRepository.java:
package com.hodor.booking.jpa.repository;
import com.hodor.booking.jpa.domain.User;
import org.springframework.data.jpa.repository.JpaRepository;
/**
* For Spring Data JPA query methods see:
* http://docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.query-methods
*/
public interface UserRepository extends JpaRepository<User, Long> {
public User findByEmail(String email);
public User findByLastname(String lastName);
}
问题:
我添加了findByLastname方法,但找不到问题(我是新手)。我从未使用过Spring。。。但是阅读关于
org.springframework.data.jpa.repository.JpaRepository
,我建议将您的方法重命名为UserRepository
界面中的findByLastname
这个函数似乎通过读取和解析从
JpaRepository
扩展而来的给定接口上定义的方法来生成JPA查询。。。通过说“findByLastname”,Spring希望在用户实体中找到一个属性:lastname
而不是lastname
您是否尝试用@列
JPA注释注释您的用户实例字段?谢谢。。在代码中的什么地方可以这样做?在用户类中。。。注释实例属性。。。示例:@Column private String firstName
您的属性是lastName
,但错误是关于lastName
。像往常一样检查getter/settersTypo。谢谢你,伙计。
package com.hodor.booking.service;
import com.hodor.booking.jpa.domain.User;
import com.hodor.booking.jpa.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.Assert;
import java.util.List;
@Service
public class UserService {
@Autowired
private UserRepository userRepository;
public User saveUser(User user) {
Assert.notNull(user);
return userRepository.saveAndFlush(user);
}
public List<User> findAll() {
return userRepository.findAll();
}
public User findOne(Long id) {
Assert.notNull(id);
return userRepository.findOne(id);
}
public User findByEmail(String email) {
Assert.hasLength(email);
return userRepository.findByEmail(email);
}
public User findByLastname(String lastName) {
Assert.hasLength(lastName);
return userRepository.findByLastname(lastName);
}
}
package com.hodor.booking.controller;
import com.hodor.booking.jpa.domain.User;
import com.hodor.booking.service.UserService;
import com.wordnik.swagger.annotations.Api;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("/api/v1/users")
@Api(value = "users", description = "User resource endpoint")
public class UserController {
private static final Logger log = LoggerFactory.getLogger(UserController.class);
@Autowired
private UserService userService;
@RequestMapping(method = RequestMethod.GET)
public List<User> index() {
log.debug("Getting all users");
return userService.findAll();
}
@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public User get(@PathVariable("id") Long id) {
return userService.findOne(id);
}
@RequestMapping(value = "/{lastName}", method = RequestMethod.GET)
public User get(@PathVariable("lastName") String lastName) {
return userService.findByLastname(lastName);
}
}
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.hodor.booking.jpa.repository.UserRepository com.hodor.booking.service.UserService.userRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'userRepository': Invocation of init method failed; nested exception is org.springframework.data.mapping.PropertyReferenceException: No property lastname found for type User!