春季控制器不返回列表成ajax成功函數

Question

我想在春天得到自動完成。它的通話網址，但沒有返回列表

我的控制器代碼是這樣的......

@RequestMapping(value = "purchase/ajaxcitySearchGeneral", method = RequestMethod.GET) 

public@ResponseBody Map < String, List <MasterPart>> getZipcodes() 

{ 
    List <MasterPart> zipcodes = new ArrayList <MasterPart>(); 
    List <MasterPart> zipcodes = itemService.getItem(); 
    System.out.println("Test Value" + zipcodes); 
    Map < String, List <MasterPart>> zipMap = new HashMap < String, List <MasterPart>>(); 

    zipMap.put("zipcodes", zipcodes); 
    System.out.println("Test Value2" + zipMap); 
    return zipMap; 
} 

Ajax代碼是這樣的...

<script> 
$(function() { 
    $("#itemNameAuto").autocomplete({ 
     source: function (request, response) { 

      $.ajax({ 
       url: 'ajaxcitySearchGeneral.htm', 
       dataType: "json", 
       data: { 
        maxRows: 10, 
        startsWith: request.term 
       }, 

       success: function (data) { 
        alert(data); 
        response($.map(data.zipcodes, function (item) { 
         return { 
          label: item.name, 
          value: item.name 
         }; 
        })); 
       } 
      }); 
     }, 

     minLength: 1, 
     open: function() { 
      $(this).removeClass("ui-corner-all").addClass("ui-corner-top"); 
     }, 

     close: function() { 
      $(this).removeClass("ui-corner-top").addClass("ui-corner-all"); 
     } 
    }); 
}); 
</script> 

Answer 1

您正在返回的Java HashMap的不是JSON。您必須先將JAVA MAP轉換爲jSOn字符串。

  return new JSONObject(map).toJSONString(); 

結帳http://www.json.org/javadoc/org/json/JSONObject.html