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

请您参考如下方法:

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 
            ... 
        }