需要一个无法找到的“com.example.Resources.UserRepository”

Question

我收到此错误：

com.example.service.Demoservice 中的字段 urs 需要一个无法找到的类型为“com.example.Resources.UserRepository”的 bean。

你能帮忙吗

package com.example.demo;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

import com.example.Resources.UserRepository;

@SpringBootApplication

@ComponentScan("com.example")

@EnableJpaRepositories("com.example")

public class DemoApplication {

    public static void main(String[] args) {

      SpringApplication.run(DemoApplication.class, args);

      System.out.println("Started");

    }

}

UserRepository.java 包 com.example.Resources;

import java.util.HashMap;

import org.springframework.data.jpa.repository.JpaRepository;

import org.springframework.data.repository.NoRepositoryBean;

import org.springframework.stereotype.Repository;

import org.springframework.stereotype.Service;

import com.example.model.DemoModel;

@Repository

public interface UserRepository extends JpaRepository<DemoModel,Integer> {

    void save(HashMap<String, DemoModel> data);

}

演示服务.java

package com.example.service;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

import org.springframework.stereotype.Component;

import com.example.Resources.UserRepository;

import com.example.model.DemoModel;

@Component

public class Demoservice

{@Qualifier("UserRepository")

    @Autowired

    UserRepository urs;

HashMap<String,DemoModel> hash=new HashMap<>();

{

DemoModel dm=new DemoModel();

dm.setId(20);

dm.setName("Priya");

dm.setDept("cse");

hash.put("1", dm);

DemoModel demo=new DemoModel();

demo.setId(26);

demo.setName("Vijaya");

demo.setDept("IT");

hash.put("2", demo);

}

public HashMap<String, DemoModel> getAll()

{

    return hash;

}

Answer 1

你应该重新定义你的包结构，所有的包都应该在 com.package.demo 里面，否则你的子包比如控制器或存储库不会被 SpringBoot 扫描或尝试使用它@SpringBootApplication(scanBasePackages={&nbsp; &nbsp; "com.example.controller",&nbsp;&nbsp; &nbsp; "com.example.service"})