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修復JPA拒絕findUserByUsername

2022-03-14 04:40:15 企業開發

我是彈簧靴的新手。我正在嘗試使用 Spring Security 向我的 api 添加身份驗證和授權，但 JPA 拒絕 findUserByUsername。即使用戶在資料庫中，它（JPA）也會回傳 null 。

請注意，該應用程式運行良好，但是當我嘗試使用用戶登錄時，會引發此例外

請查看下面的錯誤和源代碼

錯誤


2022-03-03 05:06:48.427 ERROR 9024 --- [nio-8080-exec-1] c.m.s.f.CustomUserAuthenticationFilter   : An internal error occurred while trying to authenticate the user.

org.springframework.security.authentication.InternalAuthenticationServiceException: User with email not found!
    at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:108) ~[spring-security-core-5.6.1.jar:5.6.1]
    at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:133) ~[spring-security-core-5.6.1.jar:5.6.1]
    at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:182) ~[spring-security-core-5.6.1.jar:5.6.1]
    at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:201) ~[spring-security-core-5.6.1.jar:5.6.1]
    at org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter$AuthenticationManagerDelegator.authenticate(WebSecurityConfigurerAdapter.java:518) ~[spring-security-config-5.6.1.jar:5.6.1]
    at com.maxapp.server.filter.CustomUserAuthenticationFilter.attemptAuthentication(CustomUserAuthenticationFilter.java:33) ~[classes/:na]
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:223) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:213) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:103) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:89) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:90) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:75) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.15.jar:5.3.15]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:110) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:55) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.15.jar:5.3.15]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:336) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:211) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:183) ~[spring-security-web-5.6.1.jar:5.6.1]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:354) ~[spring-web-5.3.15.jar:5.3.15]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:267) ~[spring-web-5.3.15.jar:5.3.15]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.15.jar:5.3.15]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.15.jar:5.3.15]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.15.jar:5.3.15]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.15.jar:5.3.15]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.15.jar:5.3.15]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.15.jar:5.3.15]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:895) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1732) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.56.jar:9.0.56]
    at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na]
Caused by: java.lang.IllegalStateException: User with email not found!
    at com.maxapp.server.service.UserService.loadUserByUsername(UserService.java:30) ~[classes/:na]
    at com.maxapp.server.service.UserService$$FastClassBySpringCGLIB$$c230548a.invoke(<generated>) ~[classes/:na]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.15.jar:5.3.15]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:783) ~[spring-aop-5.3.15.jar:5.3.15]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.15.jar:5.3.15]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:753) ~[spring-aop-5.3.15.jar:5.3.15]
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.15.jar:5.3.15]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.15.jar:5.3.15]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.15.jar:5.3.15]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.15.jar:5.3.15]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:753) ~[spring-aop-5.3.15.jar:5.3.15]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:698) ~[spring-aop-5.3.15.jar:5.3.15]
    at com.maxapp.server.service.UserService$$EnhancerBySpringCGLIB$$8c176907.loadUserByUsername(<generated>) ~[classes/:na]
    at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:93) ~[spring-security-core-5.6.1.jar:5.6.1]
    ... 55 common frames omitted

源代碼

模型類

用戶

package com.maxapp.server.model;


import org.hibernate.annotations.CreationTimestamp;

import javax.persistence.*;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Collection;

import static javax.persistence.FetchType.EAGER;


@Entity
@Table(name="users")
public class User {
    @Id
    @SequenceGenerator(
            name="user_sequence",
            sequenceName="user_sequence",
            allocationSize = 1
    )

    @GeneratedValue(
            strategy = GenerationType.SEQUENCE,
            generator = "user_sequence"
    )
    private long id;
    private String name;
    @Column(name="username", unique=true, nullable = false)
    private String username;
    @Column(name="password", nullable = false)
    private String password;
    @ManyToMany(fetch = EAGER)
    private Collection<Role> roles = new ArrayList<>();
    @CreationTimestamp
    private LocalDateTime createdAt;

    public User(){
    }

    public User(String name, String username, String password) {
        this.name = name;
        this.username = username;
        this.password = password;
    }

    public String getPassword() {
        return password;
    }

    public long getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getUsername() {
        return username;
    }

    public Collection<Role> getRoles() {
        return roles;
    }

    public LocalDateTime getCreatedAt() {
        return createdAt;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "User{"  
                "id="   id  
                ", name='"   name   '\''  
                ", username='"   username   '\''  
                ", createdAt="   createdAt  
                '}';
    }
}

角色

package com.maxapp.server.model;

import lombok.Data;

import javax.persistence.*;

@Data
@Entity
@Table(name="roles")
public class Role {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String name;

    public Role() {
    }

    public Role(String name) {
        this.name = name;
    }
}

回購

用戶回購

package com.maxapp.server.repository;

import com.maxapp.server.model.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends JpaRepository<User,Long> {
    User findUserById(Long id);
    User findUserByUsername(String username);
}

角色回購

package com.maxapp.server.repository;

import com.maxapp.server.model.Role;
import org.springframework.data.jpa.repository.JpaRepository;

public interface RoleRepository extends JpaRepository<Role,Long> {
    Role findRoleByName(String name);
}

服務

用戶服務

package com.maxapp.server.service;

import com.maxapp.server.model.Role;
import com.maxapp.server.model.User;
import com.maxapp.server.repository.RoleRepository;
import com.maxapp.server.repository.UserRepository;
import lombok.RequiredArgsConstructor;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

@Service @RequiredArgsConstructor @Transactional
public class UserService implements UserDetailsService {
private final UserRepository userRepository;
private final RoleRepository roleRepository;
private final PasswordEncoder passwordEncoder;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        User user = userRepository.findUserByUsername(username);
        if(user==null){
            throw new IllegalStateException("User with email not found!");
        }
        Collection<SimpleGrantedAuthority> authorities = new ArrayList<>();
        user.getRoles().forEach(role ->{
            authorities.add(new SimpleGrantedAuthority(role.getName()));
        });

        return new org.springframework.security.core.userdetails.User(user.getUsername(),user.getPassword(),authorities);
    }

    public List<User> getAllUsers() {
        return userRepository.findAll();
    }

    public User createUser(User user) {
        user.setPassword(passwordEncoder.encode(user.getPassword()));
        return userRepository.save(user);
    }

    public Role saveRole(Role role){
        return roleRepository.save(role);
    }

    public void addRoleToUser(Long id,String name){

        User user = userRepository.findUserById(id);
        Role role = roleRepository.findRoleByName(name);

        user.getRoles().add(role);

    }


    public User getSingleUser(Long id) {
        boolean exist = userRepository.existsById(id);
        if(!exist){
            throw new IllegalStateException("User with id : "   id   " not found.");
        }

        return userRepository.findUserById(id);
    }

    public void deleteUser(Long id) {
        boolean exist = userRepository.existsById(id);
        if(!exist){
            throw new IllegalStateException("User with id : "   id   " not found.");
        }

        userRepository.deleteById(id);
    }

    public void updateUser(Long id, String name) {
        User user = userRepository.findById(id).orElseThrow(()-> new IllegalStateException("User with id : "   id   " not found."));
        if(name != null && name.length()>0 && !(name.equalsIgnoreCase(user.getName()))){
            user.setName(name);
        }
    }
}

控制器

用戶控制器

package com.maxapp.server.controller;

import com.maxapp.server.model.Role;
import com.maxapp.server.model.User;
import com.maxapp.server.service.UserService;
import lombok.Data;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping(path="api/v1")
public class UserController {
 private final UserService userService;

    public UserController(UserService userService) {
        this.userService = userService;
    }

    @GetMapping(path="users")
    public List<User> getAllUsers(){
        return userService.getAllUsers();
    }

    @PostMapping(path="users")
    public User createUser(@RequestBody User user){
        return userService.createUser(user);
    }

    @PostMapping(path="roles")
    public Role createRole(@RequestBody Role role){
        return userService.saveRole(role);
    }

    @PostMapping(path="users/roles")
    public void addRoleToUser(@RequestBody RoleForm role){
        userService.addRoleToUser(role.getId(),role.getName());
    }



    @GetMapping(path="users/{id}")
    public User getSingleUser(@PathVariable("id") Long id){
        return userService.getSingleUser(id);
    }

    @PutMapping(path="users/{id}")
    public void updateUser(
            @PathVariable("id") Long id,
            @RequestParam(required = false) String name
    ){
        userService.updateUser(id,name);
    }

    @DeleteMapping(path="users/{id}")
    public void deleteUser(@PathVariable("id") Long id){
         userService.deleteUser(id);
    }

}

@Data
class RoleForm{
    private Long id;
    private String name;
}

篩選

自定義用戶身份驗證過濾器

package com.maxapp.server.filter;

import com.auth0.jwt.JWT;
import com.auth0.jwt.algorithms.Algorithm;
import lombok.RequiredArgsConstructor;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.Date;
import java.util.stream.Collectors;

@RequiredArgsConstructor
public class CustomUserAuthenticationFilter extends UsernamePasswordAuthenticationFilter {

    private final AuthenticationManager authenticationManager;

    @Override
    public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException {
        String email = request.getParameter("username");
        String password = request.getParameter("password");

        UsernamePasswordAuthenticationToken usernamePasswordAuthenticationToken = new UsernamePasswordAuthenticationToken(email,password);
        return authenticationManager.authenticate(usernamePasswordAuthenticationToken);
    }

    @Override
    protected void successfulAuthentication(HttpServletRequest request, HttpServletResponse response, FilterChain chain, Authentication authResult) throws IOException, ServletException {
        User user = (User)authResult.getPrincipal();
        Algorithm algorithm = Algorithm.HMAC256("Maxwell1".getBytes());
        String access_token = JWT.create()
                .withSubject(user.getUsername())
                .withExpiresAt(new Date(System.currentTimeMillis() 10*60*1000))
                .withIssuer(request.getRequestURI())
                .withClaim("roles",user.getAuthorities().stream().map(GrantedAuthority::getAuthority).collect(Collectors.toList()))
                .sign(algorithm);

        String refresh_token = JWT.create()
                .withSubject(user.getUsername())
                .withExpiresAt(new Date(System.currentTimeMillis() 30*60*1000))
                .withIssuer(request.getRequestURI())
                .sign(algorithm);

        response.setHeader("access_token",access_token);
        response.setHeader("refresh_token",refresh_token);

    }
}

安全

安全配置

package com.maxapp.server.security;

import com.maxapp.server.filter.CustomUserAuthenticationFilter;
import lombok.RequiredArgsConstructor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

@Configuration @EnableWebSecurity @RequiredArgsConstructor
public class SecurityConfig extends WebSecurityConfigurerAdapter {
    private final UserDetailsService userDetailsService;
    private final BCryptPasswordEncoder bCryptPasswordEncoder;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable();
        http.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
        http.authorizeRequests().anyRequest().permitAll();
        http.addFilter(new CustomUserAuthenticationFilter(authenticationManagerBean()));
    }


    @Bean

    @Override
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}

應用類

package com.maxapp.server;

import com.maxapp.server.model.Role;
import com.maxapp.server.model.User;
import com.maxapp.server.service.UserService;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class ServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(ServerApplication.class, args);
    }

    @Bean
    PasswordEncoder passwordEncoder(){
        return new BCryptPasswordEncoder();
    }

    @Bean
    CommandLineRunner runs(UserService userService){

        return  args ->{

            userService.saveRole(new Role("Admin"));
            userService.saveRole(new Role("Student"));


            userService.createUser(new User("Maxwell","[email protected]","1234"));
            userService.createUser(new User("Maxwel","[email protected]","1234"));

            userService.addRoleToUser(1L,"Admin");
            userService.addRoleToUser(2L,"Student");
        };
    }

}

uj5u.com熱心網友回復：

從我的用戶名中洗掉 @gmail.com 解決了我的問題。

實際上問題是 findUserByUsername 方法需要字串，但我正在傳遞 Gmail。

謝謝大家的快速回復。我很感激你們！

uj5u.com熱心網友回復：

findUserByUsername 將無法使用 JPA-Query 使用

@Query("your required query")

或者成功findByUsername(String username)

我建議使用JPA-Buddy Extension 來省略這些錯誤

uj5u.com熱心網友回復：

我想方法應該是：

Optional<User> findByUsername(String username);

轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/442703.html

標籤：爪哇 弹簧靴 休眠 弹簧MVC jpa

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  • IEEE1588PTP在數字化變電站時鐘同步方面的應用

    IEEE1588ptp在數字化變電站時鐘同步方面的應用 京準電子科技官微——ahjzsz 一、電力系統時間同步基本概況 隨著對IEC 61850標準研究的不斷深入，國內外學者提出基于IEC61850通信標準體系建設數字化變電站的發展思路。數字化變電站與常規變電站的顯著區別在于程序層傳統的電流/電壓互 ......

    uj5u.com 2020-09-10 03:51:52 more
  • HTTP request smuggling CL.TE

    CL.TE 簡介 前端通過Content-Length處理請求，通過反向代理或者負載均衡將請求轉發到后端，后端Transfer-Encoding優先級較高，以TE處理請求造成安全問題。 檢測 發送如下資料包 POST / HTTP/1.1 Host: ac391f7e1e9af821806e890 ......

    uj5u.com 2020-09-10 03:52:11 more
  • 網路滲透資料大全單——漏洞庫篇

    網路滲透資料大全單——漏洞庫篇漏洞庫 NVD ——美國國家漏洞庫 →http://nvd.nist.gov/。 CERT ——美國國家應急回應中心 →https://www.us-cert.gov/ OSVDB ——開源漏洞庫 →http://osvdb.org Bugtraq ——賽門鐵克 →ht ......

    uj5u.com 2020-09-10 03:52:15 more
  • 京準講述NTP時鐘服務器應用及原理

    京準講述NTP時鐘服務器應用及原理京準講述NTP時鐘服務器應用及原理 安徽京準電子科技官微——ahjzsz 北斗授時原理 授時是指接識訓通過某種方式獲得本地時間與北斗標準時間的鐘差，然后調整本地時鐘使時差控制在一定的精度范圍內。 衛星導航系統通常由三部分組成：導航授時衛星、地面檢測校正維護系統和用戶 ......

    uj5u.com 2020-09-10 03:52:25 more
  • 利用北斗衛星系統設計NTP網路時間服務器

    利用北斗衛星系統設計NTP網路時間服務器 利用北斗衛星系統設計NTP網路時間服務器 安徽京準電子科技官微——ahjzsz 概述 NTP網路時間服務器是一款支持NTP和SNTP網路時間同步協議，高精度、大容量、高品質的高科技時鐘產品。 NTP網路時間服務器設備采用冗余架構設計，高精度時鐘直接來源于北斗 ......

    uj5u.com 2020-09-10 03:52:35 more
  • 詳細解讀電力系統各種對時方式

    詳細解讀電力系統各種對時方式 詳細解讀電力系統各種對時方式 安徽京準電子科技官微——ahjzsz，更多資料請添加VX 衛星同步時鐘是我京準公司開發研制的應用衛星授時時技術的標準時間顯示和發送的裝置，該裝置以M國全球定位系統（GLOBAL POSITIONING SYSTEM,縮寫為GPS）或者我國北 ......

    uj5u.com 2020-09-10 03:52:45 more
  • 如何保證外包團隊接入企業內網安全

    不管企業規模的大小，只要企業想省錢，那么企業的某些服務就一定會采用外包的形式，然而看似美好又經濟的策略，其實也有不好的一面。下面我通過安全的角度來聊聊使用外包團的安全隱患問題。 先看看什么服務會使用外包的，最常見的就是話務/客服這種需要大量重復性、無技術性的服務，或者是一些銷售外包、特殊的職能外包等 ......

    uj5u.com 2020-09-10 03:52:57 more
  • PHP漏洞之【整型數字型SQL注入】

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    uj5u.com 2020-09-10 03:55:40 more
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    uj5u.com 2020-09-10 03:56:07 more
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    uj5u.com 2020-09-10 03:56:16 more
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    uj5u.com 2023-04-20 08:17:54 more
  • 記錄-new Date() 我忍你很久了！

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    uj5u.com 2023-04-20 08:17:47 more
  • 使用Vue.js實作文字跑馬燈效果

    實作文字跑馬燈效果，首先用到 substring()截取 和 setInterval計時器 clearInterval()清除計時器 效果如下： 實作代碼如下： <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta ......

    uj5u.com 2023-04-20 08:12:31 more
  • JavaScript 運算子

    JavaScript 運算子/運算子 在 JavaScript 中，有一些運算子可以使代碼更簡潔、易讀和高效。以下是一些常見的運算子： 1、可選鏈運算子（optional chaining operator） ?.是可選鏈運算子（optional chaining operator）。?. 可選鏈操 ......

    uj5u.com 2023-04-20 08:02:25 more
  • CSS—相對單位rem

    一、概述 rem是一個相對長度單位，它的單位長度取決于根標簽html的字體尺寸。rem即root em的意思，中文翻譯為根em。瀏覽器的文本尺寸一般默認為16px，即默認情況下： 1rem = 16px rem布局原理：根據CSS媒體查詢功能，更改根標簽的字體尺寸，實作rem單位隨螢屏尺寸的變化，如 ......

    uj5u.com 2023-04-20 08:02:21 more
  • 我的第一個NPM包:panghu-planebattle-esm(胖虎飛機大戰)使用說明

    好家伙,我的包終于開發完啦 歡迎使用胖虎的飛機大戰包!! 為你的主頁添加色彩 這是一個有趣的網頁小游戲包,使用canvas和js開發 使用ES6模塊化開發 效果圖如下: (覺得圖片太sb的可以自己改) 代碼已開源!! Git: https://gitee.com/tang-and-han-dynas ......

    uj5u.com 2023-04-20 08:01:50 more
  • 如何在 vue3 中使用 jsx/tsx?

    我們都知道,通常情況下我們使用 vue 大多都是用的 SFC(Signle File Component)單檔案組件模式,即一個組件就是一個檔案,但其實 Vue 也是支持使用 JSX 來撰寫組件的。這里不討論 SFC 和 JSX 的好壞,這個仁者見仁智者見智。本篇文章旨在帶領大家快速了解和使用 Vu ......

    uj5u.com 2023-04-20 08:01:37 more
  • 【Vue2.x原始碼系列06】計算屬性computed原理

    本章目標：計算屬性是如何實作的？計算屬性快取原理以及洋蔥模型的應用？在初始化Vue實體時，我們會給每個計算屬性都創建一個對應watcher，我們稱之為計算屬性watcher ......

    uj5u.com 2023-04-20 08:01:31 more
  • http1.1與http2.0

    一、http是什么 通俗來講，http就是計算機通過網路進行通信的規則，是一個基于請求與回應，無狀態的，應用層協議。常用于TCP/IP協議傳輸資料。目前任何終端之間任何一種通信方式都必須按Http協議進行，否則無法連接。tcp(三次握手，四次揮手)。 請求與回應：客戶端請求、服務端回應資料。 無狀態 ......

    uj5u.com 2023-04-20 08:01:10 more
  • http1.1與http2.0

    一、http是什么 通俗來講，http就是計算機通過網路進行通信的規則，是一個基于請求與回應，無狀態的，應用層協議。常用于TCP/IP協議傳輸資料。目前任何終端之間任何一種通信方式都必須按Http協議進行，否則無法連接。tcp(三次握手，四次揮手)。 請求與回應：客戶端請求、服務端回應資料。 無狀態 ......

    uj5u.com 2023-04-20 08:00:32 more

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