java - Spring Boot JSON 后 400 错误

Question

我在将 JSON 数组发布到 Spring Boot @RequestMapping Rest Controller 时遇到问题。收到 400 错误请求。有什么建议如何纠正吗？

JQuery .ajax 帖子

var sData = ["15957.028", "16356.175", "16937.155", "17564.315", "17942.480", "17760.259", "16572.306", "16746.408", "17339.681", "17946.216"] 

$.ajax({
    type: "POST",
    url: "/regression", 
    data: JSON.stringify({"sdata": sData}),
    contentType: 'application/json',
    headers: { 'X-CSRF-Token': token },
    error: function(jqXHR, textStatus, errorThrown) {
          console.log(textStatus, errorThrown, jqXHR.error());
    },
    success: function(){

    }
});

@RestController

@RequestMapping(value="/regression", method = RequestMethod.POST)
public HashMap<String, String> results(@RequestBody List<String> series )  {

    HashMap<String, String> results = new HashMap<String, String>();

    return results;

}

响应错误

responseText: "{"timestamp":1424834682223,"error":"Bad Request","status":400,"message":""}"

Answer 1

您需要将列表包装到另一个类中，如下所示

class SeriesWrapper{
  @Getter @Setter private List<String> series;
}

你的 Controller 变成了

@RequestMapping(value="/regression", method = RequestMethod.POST)
public HashMap<String, String> results(@RequestBody SeriesWrapper series )  {

    HashMap<String, String> results = new HashMap<String, String>();
    return results;

}

和您的 sData

var sData = {series : ["15957.028", "16356.175", "16937.155", "17564.315", "17942.480", "17760.259", "16572.306", "16746.408", "17339.681", "17946.216"]};