Question

我有价值的字符串折扣：

"[{\"startInterval\":0,\"endInterval\":3,\"discount\":1000.0},
 {\"startInterval\":3,\"endInterval\":6,\"discount\":750.0},
 {\"startInterval\":6,\"endInterval\":9,\"discount\":500.0},
 {\"startInterval\":9,\"endInterval\":12,\"discount\":10.0}]"

我的折扣类有型号：

public class Discount  {

    private int startInterval;
    private int endInterval;
    private double discount;

    public Discount() {

    }

    public int getStartInterval() {
        return startInterval;
    }

    public void setStartInterval(int startInterval) {
        this.startInterval = startInterval;
    }

    public int getEndInterval() {
        return endInterval;
    }

    public void setEndInterval(int endInterval) {
        this.endInterval = endInterval;
    }

    public Double getDiscount() {
        return discount;
    }

    public void setDiscount(Double discount) {
        this.discount = discount;
    }

}

我想将字符串序列化为List<Discount>。我怎么做？我已经尝试将字符串转换为JSONArray（gson和json），但我收到了一些错误。

请注意：

[{"startInterval":0,"endInterval":3,"discount":1000.0},
 {"startInterval":3,"endInterval":6,"discount":750.0},
 {"startInterval":6,"endInterval":9,"discount":500.0},
 {"startInterval":9,"endInterval":12,"discount":10.0}]

存储在mysql db中。我将其提取为字符串折扣，然后尝试序列化。

Answer 1

使用GSON：

String json = /* your json */
Type type = new TypeToken<List<Discount>>().getType();
List<Discount> discounts = new Gson().fromJson(json , type);

在Java中将给定字符串转换为List <class>

1 个答案: