java - 动态添加属性:value in JSON through rest services

Question

我们如何通过 REST 服务将其作为用户的输入来动态创建 json property:value，而无需使用字段来保存值。

基本上，当前的输出是:

{
    "name": "X",
    "price": "X",
    "ticker": "X",
    "status": "X",
    "supplier": "X",
    "attribute": [{
            "key": "index",
            "value": "Nasdaq"
        },
        {
            "key": "priority",
            "value": "high"
        }
    ]
}

所需的输出是:

{
    "name": "X",
    "price": "X",
    "ticker": "X",
    "status": "X",
    "supplier": "X",
    "attribute": [{
            "index": "Nasdaq"
        },
        {
            "priority": "high"
        }
    ]
}

这里，index和Nasdaq是用户给定的值，也就是要添加到属性列表中的键值对。

使用的两个 POJO:

Stock.java

@XmlRootElement
public class Stock {

    public Stock() {

    }

    public Stock(String name, double price, String ticker, String status, String supplier, List<KV> attribute) {
        super();
        this.name = name;
        this.price = price;
        this.ticker = ticker;
        this.status = status;
        this.supplier = supplier;
        this.attribute = attribute;
    }

    private String name;
    private double price;
    private String ticker;
    private String status;
    private String supplier;

    private List<KV> attribute;


    public List<KV> getAttribute() {
        return attribute;
    }


    public void setAttribute(List<KV> attribute) {
        this.attribute = attribute;
    }


    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public double getPrice() {
        return price;
    }

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

    public String getTicker() {
        return ticker;
    }

    public void setTicker(String ticker) {
        this.ticker = ticker;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    public String getSupplier() {
        return supplier;
    }

    public void setSupplier(String supplier) {
        this.supplier = supplier;
    }

}

并且: KV.java

public class KV {
    private String key;
    private String value;

    public KV(String key, String value) {
        super();
        this.key = key;
        this.value = value;
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }

    public String getValue() {
        return value;
    }

    public void setValue(String value) {
        this.value = value;
    }
}

更喜欢与注释的使用或其余服务中的更改相关的答案，而不是最后的文本处理。

Answer 1

好的，一旦你得到了当前得到的响应，那么你可以创建一个 Hashmap，而不是类“public class KV {}”， &Hashmap的key可以保存索引/优先级等&value可以保存Nasdaq/high。

还将 Hashmap 变量命名为“属性”。

这样您就可以使用当前的结构从 API 中提取数据，然后将其转换为我上面所说的数据并发送响应。