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springmvc文件上传 control层 @ResponseBody @RequestMapping(value = "/addKnowledgeFile") public ModelAndView addKnowledgeFile(@RequestParam(value = "file", required = false) MultipartFile file, HttpServ

public static String encodeStr(Stringstr) { if(str==null||"".equals(str)){ return ""; } try { //判断是否"ISO-8859-1"编码 if(str.equals(new String(str.getBy

for (Map.Entry set : response.entrySet() ) { System.out.print(set.getKey() + " ===== "); System.out.println(set.getValue()); }