我已经搜索了很多页,但没有找到答案,所以我粘贴了整个代码。我正在测试测试类,并得到这样的错误:“起因:org.springframework.beans.factory.BeanCreation异常:创建名为“userRepository”的bean时出错:初始化方法调用失败;嵌套异常java.lang.IllegalArgument异常:未能为方法公共抽象创建查询org.home.mysystem.entity.Userorg.home.mysystem.repository.UserRepository.findOne(java.lang.String)!没有为类型User找到属性findOne!”。请帮助我
角色JAVA
package org.home.mysystem.entity;
import java.util.List;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.ManyToMany;
@Entity
public class Role {
@Id
private String name;
@ManyToMany(mappedBy = "roles")
private List<User> users;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<User> getUsers() {
return users;
}
public void setUsers(List<User> users) {
this.users = users;
}
public Role(String name, List<User> users) {
this.name = name;
this.users = users;
}
public Role() {
}
public Role(String name) {
this.name = name;
}
}
任务JAVA
package org.home.mysystem.entity;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import org.hibernate.validator.constraints.NotEmpty;
@Entity
public class Task {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@NotEmpty
private String date;
@NotEmpty
private String startTime;
@NotEmpty
private String stopTime;
@NotEmpty
@Column(length=1000)
private String description;
@ManyToOne
@JoinColumn(name="USER_EMAIL")
private User user;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getStartTime() {
return startTime;
}
public void setStartTime(String startTime) {
this.startTime = startTime;
}
public String getStopTime() {
return stopTime;
}
public void setStopTime(String stopTime) {
this.stopTime = stopTime;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Task(String date, String startTime, String stopTime, String description, User user) {
this.date = date;
this.startTime = startTime;
this.stopTime = stopTime;
this.description = description;
this.user = user;
}
public Task(String date, String startTime, String stopTime, String description) {
this.date = date;
this.startTime = startTime;
this.stopTime = stopTime;
this.description = description;
}
public Task() {
}
}
User.java
package org.home.mysystem.entity;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.OneToMany;
import javax.validation.constraints.Size;
import org.hibernate.validator.constraints.Email;
import org.hibernate.validator.constraints.NotEmpty;
@Entity
public class User {
@Id
@Email
@NotEmpty
@Column(unique = true)
private String email;
@NotEmpty
private String name;
@Size(min = 4)
private String password;
@OneToMany(mappedBy = "user", cascade = CascadeType.ALL)
private List<Task> tasks;
@ManyToMany(cascade = CascadeType.ALL)
@JoinTable(name = "USER_ROLES", joinColumns={
@JoinColumn(name = "USER_EMAIL", referencedColumnName = "email") }, inverseJoinColumns = {
@JoinColumn(name = "ROLE_NAME", referencedColumnName = "name") })
private List<Role> roles;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public List<Task> gettasks() {
return tasks;
}
public void settasks(List<Task> tasks) {
this.tasks = tasks;
}
public List<Role> getRoles() {
return roles;
}
public void setRoles(List<Role> roles) {
this.roles = roles;
}
public User(String email, String name, String password) {
this.email = email;
this.name = name;
this.password = password;
}
public User() {
}
}
角色还原。JAVA
package org.home.mysystem.repository;
import org.home.mysystem.entity.Role;
import org.springframework.data.jpa.repository.JpaRepository;
public interface RoleRepository extends JpaRepository<Role, String> {
}
TaskRepository。JAVA
public interface TaskRepository extends JpaRepository<Task, Long> {
List<Task> findByUser(User user);
}
用户存储库。JAVA
package org.home.mysystem.repository;
import org.home.mysystem.entity.User;
import org.springframework.data.jpa.repository.JpaRepository;
public interface UserRepository extends JpaRepository<User,String> {
User findOne(final String email);
}
任务ervice.java
package org.home.mysystem.service;
import java.util.ArrayList;
import java.util.List;
import org.home.mysystem.entity.Role;
import org.home.mysystem.entity.Task;
import org.home.mysystem.entity.User;
import org.home.mysystem.repository.TaskRepository;
import org.home.mysystem.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;
@Service
public class TaskService {
@Autowired
private TaskRepository taskRepository;
public void addTask(Task task, User user) {
task.setUser(user);
taskRepository.save(task);
}
public List<Task> findUserTask(User user){
return taskRepository.findByUser(user);
}
}
用户ervice.java
import java.util.ArrayList;
import java.util.List;
import org.home.mysystem.entity.Role;
import org.home.mysystem.entity.User;
import org.home.mysystem.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;
@Service
public class UserService {
@Autowired
private UserRepository userRepository;
public void createUser(User user) {
BCryptPasswordEncoder encoder=new BCryptPasswordEncoder();
user.setPassword(encoder.encode(user.getPassword()));
Role userRole=new Role("USER");
List<Role> roles=new ArrayList<>();
roles.add(userRole);
user.setRoles(roles);
userRepository.save(user);
}
public void createAdmin(User user) {
BCryptPasswordEncoder encoder=new BCryptPasswordEncoder();
user.setPassword(encoder.encode(user.getPassword()));
Role userRole=new Role("ADMIN");
List<Role> roles=new ArrayList<>();
roles.add(userRole);
user.setRoles(roles);
userRepository.save(user);
}
public User findOne(String email) {
return userRepository.findOne(email);
}
}
MyApplicationest.java
package org.home.mysystem;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import java.util.List;
import org.home.mysystem.entity.Task;
import org.home.mysystem.entity.User;
import org.home.mysystem.service.TaskService;
import org.home.mysystem.service.UserService;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;
@RunWith(SpringRunner.class)
@SpringBootTest
public class MySystemApplicationTests {
@Autowired
private UserService userService;
@Autowired
private TaskService taskService;
@Before
public void initDb() {
{
User newUser = new User("testUser@mail.com", "testUser", "123456");
userService.createUser(newUser);
}
{
User newUser = new User("testAdmin@mail.com", "testAdmin", "123456");
userService.createUser(newUser);
}
Task userTask = new Task("03/01/2018", "00:11", "11:00", "You need to work today");
User user = userService.findOne("testUser@mail.com");
taskService.addTask(userTask, user);
}
@Test
public void testUser() {
User user=userService.findOne("testUser@mail.com");
assertNotNull(user);
User admin=userService.findOne("testAdmin@mail.com");
assertEquals(admin.getEmail(),"testAdmin@mail.com");
}
@Test
public void testTask() {
User user=userService.findOne("testUser@mail.com");
List<Task> task=taskService.findUserTask(user);
assertNotNull(task);
}
}
问题是Spring在你给予它的时候期待着别的东西。
默认情况下,findOne
被定义为使用ID(主键)加载实体。所以它期望一个long
或long
(据我所知)。它使用给定参数(电子邮件)的名称,并正在搜索具有该名称的ID,但这根本不符合要求。
如果您想通过电子邮件或您定义的其他字段进行搜索,您需要使用以下语法:
例1
要搜索的示例字段:电子邮件
存储库中的方法:User findByEmail(String email)
例2
要搜索的示例字段:username
存储库中的方法:User findByUsername(字符串用户名)
我希望这能有所帮助!
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