java - 如何将javascript数组传递给Spring Data Rest

Question

如何将数组发送到 Spring Rest？我尝试了以下方法，但没有成功

JavaScript:

function postTopic(){
    self.data.blogTopicsArr.push({
        options: {
            "title": self.title.value,
            "details": self.topicDetails.value,
            "username": "Guest user",
            "userImage": "assets/img/spiritual-icon4.png",
            "day_posted": new Date().toLocaleString()
        }
    });

    $.ajax({
        url: "/new_topic",
        type: "POST",
        dataType: "json",
        contentType: "application/json; charset=utf-8",
        data: JSON.stringify(self.data.blogTopicsArr),
        success: function (res) {
        },
        error: function (err) {
        }
    });
}

主题 Bean 类:

@Entity
@Table(name = "topics")
public class TopicBean implements Serializable {

    @Id
    @Column(name = "ID")
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @Column(name = "title")
    private String title;
    @Column(name = "details")
    private String details;
    @Column(name = "username")
    private String username;
    @Column(name = "userImage")
    private String userImage;
    @Column(name = "day_posted")
    private Date day_posted;
    //Getters and Setters
}

Spring 休息:

@RequestMapping(path = "/new_topic", method = RequestMethod.POST)
public ResponseEntity new_topic(@RequestBody List[] topics) throws Exception {
    HttpHeaders headers = new HttpHeaders();
    headers.add("success", "topic added");
    return new ResponseEntity(headers, HttpStatus.OK);
}

我收到错误:{"statusCode":400,"body":{"timestamp":1484506636823,"status":400,"error":"错误请求","exception":"org.springframework.http.converter.HttpMessageNotReadableException","message":"缺少必需的请求正文:public org.springframework.http.ResponseEntity Seconds47.rest API.Topics.new_topic(java.util.List[]) 抛出 java.lang.Exception","path":"/new_topic"}}}

如何解决这个问题？

更新:在上面添加主题 bean 类以及我在该类中使用的字段

Answer 1

尝试使用

@RequestMapping(path = "/new_topic", method = RequestMethod.POST)
public ResponseEntity new_topic(@RequestBody List<HashMap<String, Object>> topics) throws Exception

并打印出主题中的所有输入。如果您确实获得任何值，则需要将其替换为

@RequestMapping(path = "/new_topic", method = RequestMethod.POST)
public ResponseEntity new_topic(@RequestBody List<Topic> topics) throws Exception

与Topic类的相关结构。

public class Topic{

    OptionsBean options;
    ...
    //getters and setters
    ...
    }

public class OptionsBean{

            String title;
            String details;
            String username;
            String userImage;
            String day_posted;

            ...
            //getters and setters
            ...
        }