先把問(wèn)題貼出來(lái)：
@org.springframework.beans.factory.annotation.Autowired(required=true)
報(bào)這個(gè)錯(cuò)是因?yàn)椋?br> @Autowired(required=true)：當(dāng)使用@Autowired注解的時(shí)候，其實(shí)默認(rèn)就是@Autowired(required=true)，表示注入的時(shí)候，該bean必須存在，否則就會(huì)注入失敗。
Mapper層
package com.yyyy.eamon.dao;
import tk.mybatis.mapper.common.Mapper;
import com.yzym.eamon.domain.Community;
//import org.springframework.stereotype.Repository;
//import com.yzym.eamon.service.impl.CommunityServiceImpl;
//import org.springframework.context.annotation.Bean;
//import org.springframework.context.annotation.Configuration;
//
//
//@Configuration //自動(dòng)注入，程序一開始就注冊(cè)實(shí)例
public interface CommunityMapper extends Mapper<Community> {
}
**文章來(lái)源：http://www.zghlxwxcb.cn/news/detail-641953.html
Service層
**
package com.yzym.eamon.service.impl;
import com.yzym.eamon.dao.CommunityMapper;
import com.yzym.eamon.domain.Community;
import com.yzym.eamon.service.CommunityService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.ArrayList;
import java.util.List;
//import org.springframework.context.annotation.Bean;
//import org.springframework.context.annotation.Configuration;
//
//@Configuration //自動(dòng)注入，程序一開始就注冊(cè)實(shí)例
@Service
public class CommunityServiceImpl implements CommunityService {
@Autowired
private CommunityMapper communityMapper;
@Override
public List<Community> findAll(){
List<Community> communities = communityMapper.selectAll();
return communities;
}
}
啟動(dòng)類
package com.yzym.eamon;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import tk.mybatis.spring.annotation.MapperScan;
//@SpringBootApplication
//MapperScan要導(dǎo)入Tk包
//@MapperScan(basePackages = {"com.yzym.eamon.dao "})
@MapperScan(basePackages = "#####") //這里填自己的地址參考Mapper的package包的位置
@SpringBootApplication
public class EamonApplication {
public static void main(String[] args) {
SpringApplication.run(EamonApplication.class, args);
}
}
解決辦法:文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-641953.html
1、先看sevice層，你有沒(méi)有加上@Service注解。
2、再看mapper層有沒(méi)有加上@Mapper注解，以及在啟動(dòng)類上有沒(méi)有加上@MapperScan來(lái)掃描mapepr
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