如何在@RequestBody中传递2个对象? [英] How to pass 2 objects in @RequestBody?

问题描述

您能帮我解决通过@RequestBody传递两个对象的问题吗? 据我所知您无法传递2个@RequestBody参数，因此我创建了Tuple类来存储自定义数据. 就我而言，我需要在json表示形式中传递Book对象和int值.我已经尝试过不同的方法，但是每次都无法正确解析它.

Could you help me to solve a problem with passing two objects through @RequestBody? As far as I know you can't pass 2 @RequestBody parameters, so I've created Tuple class to store custom data. In my case I need to pass a Book object and int value in json representation. I've already tried different ways but each time it cannot be parsed aright.

    @NoArgsConstructor
    @AllArgsConstructor
    @Getter
    @EqualsAndHashCode
    @ToString
    public final class Tuple<K, V> {
        private K key;
        private V value;
    }

我在此方法中使用Tuple.

    @PutMapping("action/returnBook")
    public ResponseEntity<Void> returnBook(@RequestBody final Tuple<Long, Long> userIdBookInstanceId) {
        leasingHistoryService.returnBook(userIdBookInstanceId.getKey(), userIdBookInstanceId.getValue());
        return new ResponseEntity<>(HttpStatus.OK);
    }

    @Entity
    @NoArgsConstructor
    @AllArgsConstructor
    @Getter
    @EqualsAndHashCode
    @ToString
    public final class Book {

        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private Long id;

        private String title;

        @ManyToOne(cascade = CascadeType.ALL, optional = false)
        private Author author;

    }

    @Entity
    @NoArgsConstructor
    @AllArgsConstructor
    @Getter
    @EqualsAndHashCode
    @ToString
    public final class Author {

        @Id
        @GeneratedValue(strategy=GenerationType.IDENTITY)
        private Long id;

        private String name;

        private LocalDate dateOfBirth;

        private String bio;
   }

我应该在PUT请求中传递的json的结构是什么?

What is the structure of the json that I should pass in the PUT request?

推荐答案

我找到了一种方法. 在这种情况下，它是以下json:

I've found a way to do it. In this case it's the following json:

{
    "key" : {
        "title": "The Girl in the Spider's Web v17",
        "author": {
            "id": 2,
            "name": "Larsson",
            "dateOfBirth": "1954-08-15",
            "bio": "Author of the Millennium trilogy"
        }
    },
    "value": 3
}

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