springmvc @ResponseBody乱码，兼容UTF-8格式

在spring mvc中，@ResponseBody返回的默认编码为ISO-8859-1，但是实际需要的是UTF-8，所以需要转换,添加produces = "application/json; charset=utf-8"，如下所示

@RequestMapping(value = "/select",produces = "application/json; charset=utf-8")@ResponseBody  public String getSelectTagByCategory(@RequestParam Map<String,String> data) {StringBuffer sb = new StringBuffer();return sb.toString();}