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/**" />