Question

我正在尝试通过ajax将数据发送到控制器，但是遇到问题无法加载资源：服务器的响应状态为400（错误请求）。我不知道问题的哪一部分

JS：

var info ={
        "questions":{"q1":trim(q1), "q2":trim(q2),"q3":trim(q3),"q4":trim(q4),"q5":trim(q5),"q6":trim(q6),"q7":trim(q7),"q8":trim(q8)},
        "answers":{"datetimepicker":datetimepicker,"sexual":sexual,"nation":nation, "province":province,"city":city, "sheng":sheng,"shi":shi,"xian":xian, "height":height,"weight":weight}
    };
    var info_str = JSON.stringify(info);
$.ajax({
    type:'GET',
    data:info_str,
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    url :'/yiban',
    success :function(data) {
        alert(data);
    },
    error :function(e) {
        alert("error");
    }
});

Java：

 @RequestMapping(value = "/yiban", method = RequestMethod.GET)
    public void yiban(HttpServletRequest request)
    {
        String jsonStr = request.getParameter("info_str");
        JSONObject questions = JSONObject.fromObject(jsonStr).getJSONObject("questions");
        JSONObject answers = JSONObject.fromObject(jsonStr).getJSONObject("answers");
        String q1 = questions.getString("q1");
        String ans = answers.getString("nation");
        System.out.println(q1);
    }

Answer 1

@RequestMapping(value = "/yiban", method = RequestMethod.POST)
    public void yiban(HttpServletRequest request) throws IOException {
        //GET method parameter is passed with url  ,  json  data can't go with url. json or xml is passed  in request boy
//        String jsonStr = request.getParameter("info_str"); 
        ServletInputStream inputStream = request.getInputStream();
        String  jsonStr=StreamUtils.copyToString(inputStream, Charset.forName("UTF-8"));
        JSONObject questions = JSONObject.fromObject(jsonStr).getJSONObject("questions");
        JSONObject answers = JSONObject.fromObject(jsonStr).getJSONObject("answers");
        String q1 = questions.getString("q1");
        String ans = answers.getString("nation");
        System.out.println(q1);
    }

上面是我的代码，可在我的项目中使用。首先，使用POST发送json或xml！并使用request.getInputStream接收json数据！其次，您的RequestMappingMethod不返回任何内容，您的前台网站也没有任何内容！
您想返回正面的什么视图？

400错误的请求，控制器中的代码是否有问题？

1 个答案: