Springboot无法注入的问题，再一次

1. 自己写了Service，service调用mapper，在util包中注入了Service，但是发现service中的mapper变成空，没有注入成功
2. 如图
3. 解决办法，直接在工具类注入mapper，但是需要加工一下

package com.jiuqi.crcc.util;

import java.util.Date;
import java.util.UUID;

import javax.annotation.PostConstruct;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.jiuqi.crcc.entity.MdataintfExceptionEntity;
import com.jiuqi.crcc.impl.ExceptionHandleServiceImpl;
import com.jiuqi.crcc.mapper.MdataintfExceptionMapper;

/**
 * 
 * <p>TODO 异常处理工具类，把异常信息插入数据库并且打印日志</p>
 *
 *
 * @author ljw
 * @version 2019年3月11日
 */
@Component
public class ExcepitonLogUtil {
	
	private static ExcepitonLogUtil excepitonLogUtil;
	@Autowired
	private MdataintfExceptionMapper exceptionMapper;
	@PostConstruct
    public void beforeInit() {
		excepitonLogUtil=this;
		excepitonLogUtil.exceptionMapper=this.exceptionMapper;
    }
	private static final Logger logger = LoggerFactory.getLogger(ExcepitonLogUtil.class);
	public static void log(String data, String result, String errorMsg) {
		try {
//			exceptionHandleServiceImpl.insertToExceptionTable(data, result, errorMsg);
			MdataintfExceptionEntity record=new  MdataintfExceptionEntity();
			record.setErrordate(new Date());
			record.setData(data);
			record.setExceptionmsg(errorMsg);
			record.setResult(result);
			record.setRecid(UUID.randomUUID().toString().replaceAll("-", ""));
			excepitonLogUtil.exceptionMapper.insert(record);
		} catch (Exception e) {
			//e.printStackTrace();
			logger.error(e.getMessage().toString());
		}
		logger.info(errorMsg);
	}
}

成功！