java web SpringMVC后端传json数据到前端页面实例代码

@Controller public class DistrictController {   @Resource   private ProvinceService provinceServiceImp;   @Resource   private CityService cityServiceImp;   @Resource   private TourSpotService tourSpotServiceImp;   /**    * 获取所有省信息    * @param response    * @return    * @throws IOException    */   @RequestMapping("/getAllProvince")   public String getAllProvince(HttpServletResponse response) throws IOException{     response.setContentType("text/html;charset=utf-8");//设置响应的编码格式，不然会出现中文乱码现象     PrintWriter out = response.getWriter();     //get     List<Province> provincelist = provinceServiceImp.findAllProvince();     JSONArray jsonArray = JSONArray.fromObject(provincelist);     out.write(jsonArray.toString());     out.flush();     out.close();     return null;   } 

$.get("/visualization-tour/getAllProvince", function(result) {     var json = eval("("+result+")"); // 解析     var tt = "<option selected class='proInfo' value=1>~请选择省~</option>";     $.each(json, function(index) {       // 循环获取数据       var proId = json[index].proId;       var proName = json[index].proName;       tt += "<option value="+proId+">"+proName+"</option>" ;     });     $("#province").html(tt);   }); 

<!-- 静态资源访问 -->   <mvc:resources location="/img/" mapping="/img/**" />   <mvc:resources location="/js/" mapping="/js/**" />   <mvc:resources location="/css/" mapping="/css/**" />    <mvc:resources location="/page/" mapping="/page/**" />