java - RESTFul WebService - 如何将类变量表示为不同的 json 名称

Question

我刚刚开始学习 Restful Web 服务，并正在完成一项作业，在调用特定 GET 方法时，我需要返回 Product 类对象详细信息。

我想退回 - {"product_id": 123,"price": 35.50,"currency": "SGD","total_items": 1000,"items_left": 450,"time_left": 100000}

但是我得到的响应为(注意重复项)-{"availableQuantity":45,"currency":"SGD","items_left":45,"price":35.5,"product_id":1, “productId”:1，“time_left”:10000，“timeAvailable”:10000，“total_items”:100，“totalItems”:100}

我的产品类别是 -

public class Product {
    @XmlAttribute(name = "product_id")
    private int productId;
    private double price;
    private String currency;
    @XmlAttribute(name = "total_items")
    private int totalItems;

    public int getTotalItems() {
        return totalItems;
    }

    public void setTotalItems(int totalItems) {
        this.totalItems = totalItems;
    }

    @XmlAttribute(name = "items_left")
    private int availableQuantity;
    @XmlAttribute(name = "time_left")
    private long timeAvailable;

    public int getProductId() {
        return productId;
    }

    public void setProductId(int productId) {
        this.productId = productId;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    public String getCurrency() {
        return currency;
    }

    public void setCurrency(String currency) {
        this.currency = currency;
    }

    public int getAvailableQuantity() {
        return availableQuantity;
    }

    public void setAvailableQuantity(int availableQuantity) {
        this.availableQuantity = availableQuantity;
    }

    public long getTimeAvailable() {
        return timeAvailable;
    }

    public void setTimeAvailable(long timeAvailable) {
        this.timeAvailable = timeAvailable;
    }

    public Product(int id, double price, String currency, int totalItems, int itemsLeft, long timeLeft) {
        this.productId = id;
        this.price = price;
        this.currency = currency;
        this.totalItems = totalItems;
        this.availableQuantity = itemsLeft;
        this.timeAvailable = timeLeft;
    }
}

如何删除重复项并返回预期值(即使我的类变量具有不同的名称)？对于任何不正确/缺失的信息，我们深表歉意!

Answer 1

您似乎有另一个依赖项可以自动序列化您的对象。

如果是Jackson (Spring Boot 中的默认映射依赖项)，您可以将 @XmlAttribute(name = "product_id") 替换为 @JsonProperty("product_id")。