如何将javascript(js)Map传递给spring boot Controller?

时间:2018-05-24 12:23:31

标签: javascript spring spring-mvc spring-boot

我有一个Java脚本地图,其中包含我需要发送到spring boot控制器的键值对: -

示例: -



 var myMap = new Map();
     myMap.set('1', 'value1');
     myMap.set('2', 'value2');
    




我无法在Spring启动控制器中获取此JavaScript(js)地图。 根据我的最佳实践,我试图在Java的HashMap或Map中获取此地图。 非常感谢帮助。 :)

2 个答案:

答案 0 :(得分:1)

尝试以下:

var myMap = {};
myMap["names"] = ["Alex"];
myMap["fruit"]  = ["Apple"];

修改javascript代码以使用Ajax:

$.ajax({
     type : "POST",
     url :  "/reqURL",
     contentType: "application/json",
     data : JSON.stringify(myMap) // .....

控制器代码如下:

 @RequestMapping(value = "/reqURL", method = RequestMethod.POST, consumes="application/json")
    @ResponseBody
    public List<String> reqControl(@RequestBody Map<String, List<String>> myMap) {
       // do something with parameters ...
    }

答案 1 :(得分:0)

我找到了解决方案: -

var myMap = new Map();
         myMap.set('1', 'value1');
         myMap.set('2', 'value2');
         myMap.set('3', 'value3');
         myMap.set('4', 'value4');

         //Making JS Map compatible for JSON.Stringify
         const out = Object.create(null)
         myMap.forEach((value, key) => {
          if (value instanceof Map) {
            out[key] = map_to_object(value)

          }
          else {
            out[key] = value
          }
        })
$.ajax({
     type : "POST",
     url :  "/yourURL",
     contentType: "application/json",
     data : JSON.stringify(myMap) //......
@RequestMapping(value = "/yourURL", method = RequestMethod.POST, consumes="application/json")
    @ResponseBody
    public List<String> reqControl(@RequestBody Map<String,<String> myMap) {
       //  further code.   
    }