小编den*_*a08的帖子

堆栈：AngularJS v1.6.5、java 8、spring boot、tomcat。经过大约 1 周的工作，应用程序没有响应此类错误。为什么会发生这种情况？

前端：

$http({
             url: 'find',
             method: "post",
             data: { 'month' : $scope.month,'year' : $scope.year, 'payTime' : $scope.payTime,'waitTime' : $scope.waitTime,'scanTime' : $scope.scanTime,'gbNumber' : $scope.hyper}
         })
         .then(function(response) {
 ..
       });
 }

后端：

@RequestMapping(path = "/find", method = RequestMethod.POST)
public ReportResponse find(@RequestBody RequestSearch params,
                           HttpServletResponse response) throws DataNotFoundException {
  ...

}

堆栈跟踪：

2018-04-02 09:37:44.738 ERROR 14912 --- [p-nio-80-exec-9] o.s.boot.web.support.ErrorPageFilter     : Cannot forward to error page for request [/excel/ExceReport.xls] as the response has already been committed. …

我不喜欢forEach的部分,但我不知道如何用lambda做得更好.

list1.stream().map(element -> {
    list2.forEach(item -> {
       if (element.getKey().equals(item.getKeyNextYear())) {
          element.setSummPreviosYear(item.getSumm());
          element.setCashboxCountPreviosYear(item.getCashboxCount());
          element.setCheckCountPreviosYear(item.getCheckCount());
          element.setArticleCountPreviosYear(item.getArticleCount());
       }
    });
    return element;
}).collect(Collectors.toList());