改造回傳空值期望一個屬性

這是 JSON 回應示例

{
"$id": "1",
"ErrorCode": 0,
"ErrorMessage": null,
"Result": {
"$id": "2",
"LicenseId": 26,
"ClientId": 3,
"ClientCode": "101",
"ClientName": "Silver Creek Software1",
"AppId": 1012,
"ApplicationName": "WMS Picking Client",
"LicenseKey": "5120-4065-1531-B375",
"LicenseType": "D",
"TimeRegistered": null,
"LicenseCount": 1,
"Status": true,
"ClientApplicationSettings": [ {
"$id": "3",
**"ClientAppSettingsId": 87,
"LicenseKey": "5120-4065-1531-B375",
"SettingsType": "S",
"ModuleName": null,
"AddonName": "Namespace",
"ClassName": null,
"AllowAccess": false,
"SettingValue": "http://silvercreek.com/WMSPickingClient",
"DisplayOrder": 1,
"Status": true
},**

我正在嘗試使用改造來決議 JSON 并創建介面。我遇到的問題是，除了 $id.I 只需要 ClientApplicationSettings Array 值之外的每個值都為 null

我有一個 ClientApplicationSettings pojo，看起來像這樣：

    private String $id;
    private String clientAppSettingsId;
    private String licenseKey;
    private String settingsType;
    private String moduleName;
    private String addonName;
    private String className;
    private String allowAccess;
    private String settingValue;
    private String displayOrder;
    private String status;

    public String get$id() {
        return $id;
    }

    public void set$id(String $id) {
        this.$id = $id;
    }

    public String getClientAppSettingsId() {
        return clientAppSettingsId;
    }

    public void setClientAppSettingsId(String clientAppSettingsId) {
        this.clientAppSettingsId = clientAppSettingsId;
    }

    public String getLicenseKey() {
        return licenseKey;
    }

    public void setLicenseKey(String licenseKey) {
        this.licenseKey = licenseKey;
    }

    public String getSettingsType() {
        return settingsType;
    }

    public void setSettingsType(String settingsType) {
        this.settingsType = settingsType;
    }

    public String getModuleName() {
        return moduleName;
    }

    public void setModuleName(String moduleName) {
        this.moduleName = moduleName;
    }

    public String getAddonName() {
        return addonName;
    }

    public void setAddonName(String addonName) {
        this.addonName = addonName;
    }

    public String getClassName() {
        return className;
    }

    public void setClassName(String className) {
        this.className = className;
    }

    public String getAllowAccess() {
        return allowAccess;
    }

    public void setAllowAccess(String allowAccess) {
        this.allowAccess = allowAccess;
    }

    public String getSettingValue() {
        return settingValue;
    }

    public void setSettingValue(String settingValue) {
        this.settingValue = settingValue;
    }

    public String getDisplayOrder() {
        return displayOrder;
    }

    public void setDisplayOrder(String displayOrder) {
        this.displayOrder = displayOrder;
    }

    public String getStatus() {
        return status;
    }

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

這是我的改造

        SettingParameter settingParameter = new SettingParameter();
        settingParameter.setClientCode("101");
        settingParameter.setApplicationCode("WMSPC");
        //settingParameter.setClientCode(strClientCode);
        settingParameter.setDeviceId(androidId);
        //settingParameter.setDeviceId("868785042115222");
        settingParameter.setDeviceName(deviceName);
        settingParameter.setDeviceType("Android");


        Call<LicenseSettings> call = APIClient.getInstance().getMyApi().getSettings(settingParameter);
        call.enqueue(new Callback<LicenseSettings>() {
            @Override
            public void onResponse(Call<LicenseSettings> call, Response<LicenseSettings> response) {
                //System.out.println("onResponse");
                //System.out.println(response.body().toString());
                Log.e("MY gson.JSON:  ", "Response Data "   response.body());


            }

            @Override
            public void onFailure(Call<LicenseSettings> call, Throwable t) {
                String errorMsg = t.getMessage();
                if(errorMsg.equalsIgnoreCase("timeout")){
                    getSettings();
                }else {

                }
                Toast.makeText(getApplicationContext(),t.getMessage(),Toast.LENGTH_LONG).show();

            }
        });

uj5u.com熱心網友回復：

您的 Java 類 $id 和 json $id 是相同的，以防其他類不同。在 Java 類中更改與 Json 物件中相同的變數名，如下所示。

更改如下

private String status;
to 
private String Status;

更新 您的 ClientApplicationSettings pojo 是這樣的嗎？因為它是一個串列

public class Example
 { 
"$id": "1", 
"ErrorCode": 0, 
... 
Public List<ClientApplicationSettings> client; }
 And 
Public class ClientApplicationSettings 
{ 
private String $id; 
private String ClientAppSettingsId; 
private String LicenseKey; 
private String SettingsType; 
private String ModuleName; 
.... 
}

uj5u.com熱心網友回復：

將您的 ClientApplicationSettings POJO 更改為

@SerializedName("$id")
private String $id;
@SerializedName("ClientAppSettingsId")
private String clientAppSettingsId;
@SerializedName("LicenseKey")
private String licenseKey;
@SerializedName("SettingsType")
private String settingsType;
@SerializedName("ModuleName")
private String moduleName;
@SerializedName("AddonName")
private String addonName;
@SerializedName("ClassName")
private String className;
@SerializedName("AllowAccess")
private String allowAccess;
@SerializedName("SettingValue")
private String settingValue;
@SerializedName("DisplayOrder")
private String displayOrder;
@SerializedName("Status")
private String status;

另外，你的外部類應該是這樣的，

public class Client{
@SerializedName("$id")
private String $id;
.
.
@SerializedName("ClientApplicationSettings")
private List<ClientApplicationSettings> clientApplicationSettings
}

并且您獲得了 ClientApplicationSettings 的空值，因為如果您仔細觀察它期待 ARRAY_OBJECT 但您提供了 STRING_OBJECT。

另外，請記住，始終建議在序列化和反序列化時使用 @SerializedName 注釋。沒有該注釋將適用于除錯版本，但不適用于發布版本（發布版本被縮小，不在這里寫一個完整的解釋，但如果你好奇，請執行谷歌“縮小和混淆”程序）。

標籤：安卓 接口 改造

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