java - 如何将json响应设置为java对象

Question

我有 api 并尝试访问链接:

server/apps/ProcessRequest?req={"agent_id":"id","proccode":"380000","agent_pass":"pass","req_datetime":"20161108132741","customer_id":"547201743150","product_code":"001002","rrn":"uniquecode"}

我的问题是上面链接的响应，我想将响应设置为java对象并使用它。

我得到这个回复:

{
"resp_code": "0000",
"amount": "0",
"data": {
    "Status": "0000",
    "NomorPelanggan": "547",
    "IDPelanggan": "547",
    "Unsold": "[]",
    "Nama": "PLGN LPB., 05134710274",
    "TeleponUP": "123",
    "Daya": "2200",
    "KodeUP": "54720",
    "MaksimalKWH": "5000",
    "Tagihan": [
        {
            "Periode": "201611",
            "Total": 0
        }
    ],
    "NomorMeter": "05134710274",
    "Tarif": "R3",
    "TotalTagihan": "0",
    "ErrorMessage": "",
    "SessionId": "2016110813321820497",
    "Nominal": [
        20000,
        50000,
        100000,
        200000,
        500000,
        1000000,
        5000000,
        10000000,
        50000000
    ],
    "KodeDistribusi": "54"
},
"resp_desc": "Successful",
"proccode": "380000"}

如何将此响应设置为java对象？

该 api 不属于我，我现在不知道该 api 的 pojo 模型。

Answer 1

我认为你追求的是连载。如果您事先知道要接收的 Json 的格式，则可以简单地使用 Gson 解析 Json 并从中创建 Java 对象。

假设你有这个 json:

{
    "type": "Fiat",
    "model": "500",
    "colour": "white"
}

尝试这样的事情:

public class Car {
    private String type;
    private String model;
    private String colour;
    // Getters and setters.
}

public static void main(final String... args) {
    String json = getTheJsonSomehow();
    Gson gson = new Gson();
    Car car = gson.fromJson(json, Car.class);
}

参见the documentation