完成责任量化功能

pqs-common/common-poi/src/main/java/com/njcn/poi/util/PoiUtil.java

@@ -1,7 +1,5 @@
 package com.njcn.poi.util;
 
-import cn.afterturn.easypoi.excel.ExcelExportUtil;
-import cn.afterturn.easypoi.excel.entity.ExportParams;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.CharsetUtil;
 import com.njcn.common.pojo.enums.response.CommonResponseEnum;
@@ -12,10 +10,7 @@ import javax.servlet.ServletOutputStream;
 import javax.servlet.http.HttpServletResponse;
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
 import java.net.URLEncoder;
-import java.util.Collection;
 
 /**
  * @author hongawen