java - 尝试将 js 数组映射到 List 时出现错误请求，Spring MVC

Question

我需要将请求和数组一起发送到 Spring MVC Controller ，并希望将其映射到自定义类列表中:

$.ajax({
            url:contextPath+ "/auth/manage/getAuthList.do",
            type: "POST",
            data: {subjectList:subjectList}
 .....
}

Controller 就像:

@RequestMapping(value = "/getAuthList.do",method = RequestMethod.POST)
@ResponseBody
  public JsonResult getAuthorizedList(@RequestParam List<Subject> subjectList, HttpSession session) throws UnsupportedEncodingException, SQLException {

但是当发送请求时，我收到了错误的请求。

Required List parameter 'subjectList' is not present

我也尝试过使用 Subject[] 而不是 List 但它有同样的错误请求(需要参数数组但未提供)。

//主题列表如下:

[{
    btId:9
    btName:"tx3"
    btNameCN:"YYY",
    serviceId:1,
    subjectId:9401,
    suebjectNameCN:"XXX"
},
    btId:9
    btName:"tx3"
    btNameCN:"YYY2",
    serviceId:1,
    subjectId:9402,
    suebjectNameCN:"XXX2"
}
]

这是我的Subject 类

public class Subject implements Serializable{

    private int subjectId;
    private String subjectNameCN;
    private int btId;
    private String btName;
    private String btNameCN;
    private int serviceId;

    public Subject(int subjectId, String subjectNameCN, int btId,
            String btName, String btNameCN, int serviceId) {
        super();
        this.subjectId = subjectId;
        this.subjectNameCN = subjectNameCN;
        this.btId = btId;
        this.btName = btName;
        this.btNameCN = btNameCN;
        this.serviceId = serviceId;
    }


    public int getServiceId() {
        return serviceId;
    }
    public void setServiceId(int serviceId) {
        this.serviceId = serviceId;
    }

    public int getSubjectId() {
        return subjectId;
    }
    public void setSubjectId(int subjectId) {
        this.subjectId = subjectId;
    }

    public String getSubjectNameCN() {
        return subjectNameCN;
    }
    public void setSubjectNameCN(String subjectNameCN) {
        this.subjectNameCN = subjectNameCN;
    }

    public int getBtId() {
        return btId;
    }
    public void setBtId(int btId) {
        this.btId = btId;
    }

    public String getBtName() {
        return btName;
    }
    public void setBtName(String btName) {
        this.btName = btName;
    }

    public String getBtNameCN() {
        return btNameCN;
    }
    public void setBtNameCN(String btNameCN) {
        this.btNameCN = btNameCN;
    }

    //please discard this two method since it is wrong getter/setter but legacy ones
    public int getserviceId() {
        return serviceId;
    }
    public void setserviceId(int serviceId) {
        this.serviceId = serviceId;
    }

}

更新:

尝试将@RequestParam替换为@RequestBody，得到415

The server refused this request because the request entity is in a format not supported by the requested resource for the requested method. 

Answer 1

您必须将 @RequestParam 替换为 @RequestBody 注释。

@RequestParam 用于 GET 请求参数，而您提供数据作为 POST 请求正文。