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;
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);
}
UserService.java:
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);
}
}
UserController中:
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);
}
}
StackTrace:
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!
问题:
我添加了findByLastname方法,我找不到问题(我是新手)。
答案 0 :(得分:2)
我从未使用过Spring ...但是在org.springframework.data.jpa.repository.JpaRepository
上阅读findByLastname
,我建议您将findByLastName
重命名为UserRepository
JpaRepository
lastname
} interface ...
似乎这个功能通过在lastName
扩展的给定接口上读取和解析定义的方法来生成JPA查询...并且通过说&#34; findByLastname&#34;,Spring期望找到一个属性在用户实体中:JOIN
而不是 textArea .setWrapStyleWord(true);
textArea .setLineWrap(true);
DefaultCaret caret = (DefaultCaret) textArea .getCaret();
caret.setUpdatePolicy(DefaultCaret.NEVER_UPDATE);