解决运营系统导出用户信息操作频繁时，并发下载出错的问题

src/main/java/cn/quantgroup/xyqb/controller/external/querylog/UserQueryLogController.java

 package cn.quantgroup.xyqb.controller.external.querylog;
 
+import java.io.OutputStream;
+import java.text.SimpleDateFormat;
+import java.time.LocalDateTime;
+import java.util.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.poi.hssf.usermodel.*;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.data.domain.Page;
+import org.springframework.util.StringUtils;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.google.gson.*;
+import io.swagger.annotations.ApiOperation;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
 import cn.quantgroup.xyqb.Constants;
 import cn.quantgroup.xyqb.entity.Address;
 import cn.quantgroup.xyqb.entity.UserDetail;
@@ -15,24 +38,6 @@ import cn.quantgroup.xyqb.util.IdcardValidator;
 import cn.quantgroup.xyqb.util.ValidationUtil;
 import cn.quantgroup.xyqb.util.encrypt.MD5Util;
 import cn.quantgroup.xyqb.util.encrypt.RSA;
-import com.google.gson.*;
-import io.swagger.annotations.ApiOperation;
-import org.apache.poi.hssf.usermodel.*;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.beans.factory.annotation.Value;
-import org.springframework.data.domain.Page;
-import org.springframework.util.StringUtils;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestParam;
-import org.springframework.web.bind.annotation.RestController;
-
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-import java.io.OutputStream;
-import java.text.SimpleDateFormat;
-import java.util.*;
 
 /**
  * Created by zenglibin on 17/06/13.
@@ -321,11 +326,6 @@ public class UserQueryLogController {
                     LOGGER.info("签名校验失败！");
                 }
             }
-//      else{
-//          phonesMap.put("errorMsg",obj.get("msg").getAsString());
-//          LOGGER.info("从支付中心接口返回data为null");
-//      }
-
         } catch (Exception e) {
             phonesMap.put("errorMsg", "查询银行卡信息接口返回解析异常");
             LOGGER.info("查询银行卡信息接口返回解析异常");
@@ -336,8 +336,6 @@ public class UserQueryLogController {
     @RequestMapping("/exportUserInfo")
     @ApiOperation(value = "给运营系统提供的导出用户信息的接口", notes = "给运营系统提供的导出用户信息的接口", httpMethod = "POST")
     public JsonResult exportExcel(final HttpServletResponse response, HttpServletRequest request, String key, String keyValues, String columns) {
-
-
         String token = request.getHeader(Constants.X_AUTH_TOKEN);
         if (StringUtils.isEmpty(token)) {
             LOGGER.info("token为空，非法查询");
@@ -354,16 +352,12 @@ public class UserQueryLogController {
         }
 
         List<UserQueryInfo> uqls = new ArrayList<>();
-
         String[] values = keyValues.split(";");
-
         List<String> queryV = Arrays.asList(values);
-
         if (queryV != null && queryV.size() > 3000) {
             return JsonResult.buildErrorStateResult("查询记录数是" + queryV.size() + ",超过3000条限制", null);
         }
 
-
         //如果维度里面没有保护查询条件则加入条件
         if (!columns.contains(key)) {
             columns = columns + "," + key;
@@ -406,7 +400,6 @@ public class UserQueryLogController {
             userDetails = userDetailService.findByIdnos(queryV);
         }
 
-
         if (columns.contains("bankCard")) {
             //需加银行卡信息
             if (key.equals(Constants.PHONE_NO)) {
@@ -457,16 +450,6 @@ public class UserQueryLogController {
 
         }
 
-//    //不保存记录
-//    UserQueryLog log=new UserQueryLog();
-//    log.setQueryItems(columns.replace("userId","用户ID").replace(Constants.PHONE_NO,"手机号").replace("idNo","身份证号").replace("bankCard","银行卡号").replace("address","地址"));
-//    log.setResultAmount(Long.valueOf(userDetails.size()));
-//    //转换存储
-//    log.setQueryCondition(key.replace("userId","用户ID").replace(Constants.PHONE_NO,"手机号").replace("idNo","身份证号"));
-//    log.setQueryDetail(keyValues.replace("\n",";"));
-//    log.setLoginUserName(userName);
-//    userQueryLogService.save(log);
-
         HSSFWorkbook wb = new HSSFWorkbook();
         // 第二步，在webbook中添加一个sheet,对应Excel文件中的sheet
         HSSFSheet sheet = wb.createSheet("用户信息列表");
@@ -474,7 +457,8 @@ public class UserQueryLogController {
         HSSFRow row = sheet.createRow(0);
         // 第四步，创建单元格，并设置值表头 设置表头居中
         HSSFCellStyle style = wb.createCellStyle();
-        style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 创建一个居中格式
+        // 创建一个居中格式
+        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
 
         HSSFCell cell = row.createCell(0);
         cell.setCellValue("userId");
@@ -496,7 +480,6 @@ public class UserQueryLogController {
         cell.setCellStyle(style);
 
         // 第五步，写入实体数据 实际应用中这些数据从数据库得到，
-        //List list = CreateSimpleExcelToDisk.getStudent();
 
         for (int i = 0; i < uqls.size(); i++) {
             row = sheet.createRow(i + 1);
@@ -505,7 +488,7 @@ public class UserQueryLogController {
             if (user != null && row != null) {
                 HSSFCell cell0 = row.createCell(0);
                 if (cell0 != null) {
-                    cell0.setCellValue(user.getUserId() == null ? " " : String.valueOf(user.getUserId()));//user.getUserId()==null?" ":String.valueOf(user.getUserId())
+                    cell0.setCellValue(user.getUserId() == null ? " " : String.valueOf(user.getUserId()));
                 }
 
                 HSSFCell cell1 = row.createCell(1);
@@ -535,18 +518,19 @@ public class UserQueryLogController {
 
             }
         }
-        // 第六步，将文件存到指定位置
-        try {
-            OutputStream output = response.getOutputStream();
+        /*
+         * 第六步，将文件存到指定位置
+         * 采用时间戳命名方式，避免同主机出现并发同名文件冲突引起的文件流被动关闭现象
+         */
+        try(OutputStream output = response.getOutputStream()){
+            String filename = "users-".concat(LocalDateTime.now().toString()).concat(".xlsx");
             response.reset();
-            response.setHeader("Content-disposition", "attachment; filename=users.xlsx");
+            response.setHeader("Content-disposition", "attachment; filename=".concat(filename));
             response.setContentType("application/vnd.ms-excel;charset=utf-8");
             response.setCharacterEncoding("utf-8");
             wb.write(output);
-            output.close();
-
         } catch (Exception e) {
-            e.printStackTrace();
+            LOGGER.error("解析运营系统用户token返回结果resultStr异常", e);
         }
         return JsonResult.buildSuccessResult("导出成功", null);
     }