java如何将这些数据转化为实体类 {"a":"9PtTNNWB1ooPsyQGEqijsg==","b":"","c":"1702024265046"}

可以使用Jackson库将JSON字符串转换为Java对象。具体实现如下所示：

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;

public class MyClass {
    public static void main(String[] args) throws IOException {
        String jsonStr = "{\"a\":\"9PtTNNWB1ooPsyQGEqijsg==\",\"b\":\"\",\"c\":\"1702024265046\"}";
        ObjectMapper objectMapper = new ObjectMapper();
        MyEntity myEntity = objectMapper.readValue(jsonStr, MyEntity.class);
        System.out.println(myEntity);
    }
}

class MyEntity {
    private String a;
    private String b;
    private String c;

    // 必须要有默认构造函数
    public MyEntity() {}

    public String getA() {
        return a;
    }

    public void setA(String a) {
        this.a = a;
    }

    public String getB() {
        return b;
    }

    public void setB(String b) {
        this.b = b;
    }

    public String getC() {
        return c;
    }

    public void setC(String c) {
        this.c = c;
    }

    @Override
    public String toString() {
        return "MyEntity{" +
                "a='" + a + '\'' +
                ", b='" + b + '\'' +
                ", c='" + c + '\'' +
                '}';
    }
}

输出结果为：

MyEntity{a='9PtTNNWB1ooPsyQGEqijsg==', b='', c='1702024265046'}