Question

我试图扩展JHipster用户，所以我遵循以下官方教程：

http://www.jhipster.tech/tips/022_tip_registering_user_with_additional_information.html

重点是我总是在UserService.java

中出错

UserService.java：[61,5]变量alRepository可能没有初始化

下面你可以看到UserService.java代码。

inicial

$htmlContent = '
<html><body>
    <h2>Title</h2>
    <hr>
    <p style="font-family:sans-serif;">
        <b>Name: </b> (%s) <br>
        <b>Email: </b> (%s) <br>
        <b>Message: </b> (%s) <br>
    </p>
</body></html>';
$htmlContent = sprintf($htmlContent, $name, $email, $message);

createUser方法

package br.ufrj.g2matricula.service;

import br.ufrj.g2matricula.domain.Authority;
import br.ufrj.g2matricula.domain.User;
import br.ufrj.g2matricula.domain.Aluno;
import br.ufrj.g2matricula.repository.AuthorityRepository;
import br.ufrj.g2matricula.config.Constants;
import br.ufrj.g2matricula.repository.UserRepository;
import br.ufrj.g2matricula.repository.AlunoRepository;
import br.ufrj.g2matricula.repository.search.UserSearchRepository;
import br.ufrj.g2matricula.repository.search.AlunoSearchRepository;
import br.ufrj.g2matricula.security.AuthoritiesConstants;
import br.ufrj.g2matricula.security.SecurityUtils;
import br.ufrj.g2matricula.service.util.RandomUtil;
import br.ufrj.g2matricula.service.dto.UserDTO;
import br.ufrj.g2matricula.web.rest.vm.ManagedUserVM;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.time.Instant;
import java.time.temporal.ChronoUnit;
import java.util.*;
import java.util.stream.Collectors;

/**
 * Service class for managing users.
 */
@Service
@Transactional
public class UserService {

    private final Logger log = LoggerFactory.getLogger(UserService.class);

    private final UserRepository userRepository;

    private final AlunoRepository alRepository;

    private final PasswordEncoder passwordEncoder;

    private final UserSearchRepository userSearchRepository;

    private final AlunoSearchRepository alSearchRepository;

    private final AuthorityRepository authorityRepository;

    public UserService(UserRepository userRepository, PasswordEncoder passwordEncoder, UserSearchRepository userSearchRepository, AuthorityRepository authorityRepository) {
        this.userRepository = userRepository;
        this.passwordEncoder = passwordEncoder;
        this.userSearchRepository = userSearchRepository;
        this.authorityRepository = authorityRepository;
    }

    /*public UserService(UserRepository userRepository, AlunoRepository alunoRepository, PasswordEncoder passwordEncoder, UserSearchRepository userSearchRepository, AuthorityRepository authorityRepository) {
        this.userRepository = userRepository;
        this.passwordEncoder = passwordEncoder;
        this.userSearchRepository = userSearchRepository;
        this.authorityRepository = authorityRepository;
        this.alRepository = alunoRepository;
    }*/

我不能只设置alRepository = new AlunoRepository（），因为AlunoRepository是一个抽象类，无法实例化。

你们建议做什么？

Answer 1

我想你忘记在你的userservice构造函数中注入alrepository bean了

JHipster UserService - 变量可能尚未初始化

1 个答案: