我正在尝试使用 BCrypt 在 postgreSQL 数据库中保存加密密码，但出现错误。我在 stackoverflow 上看到了其他答案 我尝试使用这些提示，但我有同样的错误:This application has no explicit mapping for/error, so you are seeing this as a fallback.

2020 年 8 月 25 日星期二 19:37:41 东部夏令时 出现意外错误(类型=内部服务器错误，状态=500)。 无法提交 JPA 事务；嵌套异常是 javax.persistence.RollbackException: Error while committing the transaction org.springframework.transaction.TransactionSystemException:无法提交 JPA 事务；嵌套异常是 javax.persistence.RollbackException: Error while committing the transaction com.sun.proxy.$Proxy76.save(未知来源) .... 在 com.car.carDealer.service.UserService.saveUser(UserService.java:38) 在 com.car.carDealer.controller.Register.register(Register.java:46)

我的代码是:

    > > @Configuration 
         public class WebConfig implements WebMvcConfigurer {
    >     @Bean
    >     public BCryptPasswordEncoder passwordEncoder() {
    >         return new BCryptPasswordEncoder();
    >     } 
}

public interface UserRepository extends CrudRepository<User,Integer> {
        User findByEmail(String email);
        User findByEmailAndPassword(String email,String password);
}

@Service
public class UserService {

    @Autowired
    private final UserRepository userRep;

    @Autowired
    BCryptPasswordEncoder bCryptPasswordEncoder;

    @Autowired
    BCryptPasswordEncoder bCryptEncoder;

    @Autowired
    public UserService(UserRepository userRep) {
        this.userRep = userRep;
    }

    public User findByEmailAndPassword(String email, String password) {
        return userRep.findByEmailAndPassword(email, password);
    }

    public User findByEmail(String email) {
        return userRep.findByEmail(email);
    }

    public void saveUser(User user) {
        userRep.save(user);
    }

 @RequestMapping(value = "/register", method = RequestMethod.POST)
    public String register(
            @Valid User user, BindingResult result, Model model) {
    @PostMapping("/register")
    public String register(@Valid User user, BindingResult result, Model model) {
        if (result.hasErrors()) {
            return "user/register";
        } else {

            User valid = userService.findByEmail(user.getEmail());
            if (valid == null) {
                user.setPassword(bCryptEncoder.encode(user.getPassword()));
                userService.saveUser(user);
                String msg = " succes!";
                model.addAttribute("msg", msg);
                return "user/register";
            } else {
                String msg = "Please choose another email !";
                model.addAttribute("msg", msg);

最佳答案

我试过了。一旦我删除验证，它就会加密密码并将其存储在数据库中。但是当我进行如下验证时:密码必须为 8 到 15 个字符，即使我满足了这个条件，但它不会将其存储在数据中并给出此错误

无法提交 JPA 事务；嵌套的异常是 javax.persistence.RollbackException: Error while committing the transaction

https://stackoverflow.com/questions/63583559/