jsアップロードtxtテキストでテキストの内容を読み取る

 /**
   *     
   */
 

        txt        ： 
          
 


 /**
   * js  
   */
  function addWord() {
      var objFile = document.getElementById("fileId");
      if(objFile.value == "") {
          alert("txt   ")
          return false;
      }
      var files = $('#fileId').prop('files'); //       
      console.log(files.length);
      if(files.length == 0 || files.length > 1) {
          alert('       ');
          return false;
      } else {
          for(var i = 0; f = files[i]; i++) {
              var reader = new FileReader(); //    FileReader
              reader.readAsText(files[i], "UTF-8"); //    
              reader.onload = function(evt) { //            
                  var fileString = evt.target.result; //       
                  $.ajax({
                      url: 'filter/addTxt',
                      type: 'post',
                      data: {fileString:fileString},
                      dataType: 'json',
                      success: function(data){
                          alert(data.msg);
                          location.reload();
                      },
                      error: function(){
                          alert('       ，     ');
                      }
                  })
              }
          }
          return false;
      }
  }

/**
     * txt     
     * @param fileString
     * @return
     */
	@RequestMapping("/addTxt")
	@ResponseBody
	public Map addTxt(String fileString){
        HashMap map = new HashMap<>();
	    if(fileString == null || fileString.equals("")){
            map.put("msg","    ，    ");
            return map;
        }
        String[] strings = fileString.split("
");
        for(String s: strings){
            SensitiveWord sensitiveWord = new SensitiveWord();
            sensitiveWord.setWord(s);
            sensitiveWord.setStatus(0);
            sensitiveService.insert(sensitiveWord);
        }
        map.put("msg","    ");
        return map;
    }