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Question

Ich bekomme einen Fehler über Typ Adapter, wenn ich versuche, die Klasse mit Gson zu konvertieren, bitte helfen. Dies ist mein Klasse AccountBalance mit Auth Class drin.

import java.io.Serializable; 

import com.google.gson.Gson; 
import com.google.gson.annotations.Expose; 
import com.google.gson.annotations.SerializedName; 

    public class AccountBalance implements Serializable 
    { 

     @SerializedName("authorization_credentials") 
     @Expose 
     private Authorization_credentials authorization_credentials; 
     @SerializedName("corporate_no") 
     @Expose 
     private String corporate_no; 
     @SerializedName("msisdn") 
     @Expose 
     private String msisdn; 
     @SerializedName("account_number") 
     @Expose 
     private String account_number; 
     private final static long serialVersionUID = 7694553150839905572L; 

     public Authorization_credentials getAuthorization_credentials() { 
      return authorization_credentials; 
     } 

     public void setAuthorization_credentials(Authorization_credentials authorization_credentials) { 
      this.authorization_credentials = authorization_credentials; 
     } 

     public AccountBalance withAuthorization_credentials(Authorization_credentials authorization_credentials) { 
      this.authorization_credentials = authorization_credentials; 
      return this; 
     } 

     public String getCorporate_no() { 
      return corporate_no; 
     } 

     public void setCorporate_no(String corporate_no) { 
      this.corporate_no = corporate_no; 
     } 

     public AccountBalance withCorporate_no(String corporate_no) { 
      this.corporate_no = corporate_no; 
      return this; 
     } 

     public String getMsisdn() { 
      return msisdn; 
     } 

     public void setMsisdn(String msisdn) { 
      this.msisdn = msisdn; 
     } 

     public AccountBalance withMsisdn(String msisdn) { 
      this.msisdn = msisdn; 
      return this; 
     } 

     public String getAccount_number() { 
      return account_number; 
     } 

     public void setAccount_number(String account_number) { 
      this.account_number = account_number; 
     } 

     public AccountBalance withAccount_number(String account_number) { 
      this.account_number = account_number; 
      return this; 
     } 

     @Override 
     public String toString() { 
      Gson gson = new Gson(); 
      String json = gson.toJson(Authorization_credentials.class); 
      return json; 
     } 
    } 

Dies ist meine andere Klasse einhüllen benötigt .. Danke

import java.io.Serializable; 

import com.google.gson.Gson; 
import com.google.gson.annotations.Expose; 
import com.google.gson.annotations.SerializedName; 


public class Authorization_credentials implements Serializable 
{ 

    @SerializedName("api_key") 
    @Expose 
    private String api_key; 
    @SerializedName("token") 
    @Expose 
    private String token; 
    private final static long serialVersionUID = 8239940692560349228L; 

    public String getApi_key() { 
     return api_key; 
    } 

    public void setApi_key(String api_key) { 
     this.api_key = api_key; 
    } 

    public Authorization_credentials withApi_key(String api_key) { 
     this.api_key = api_key; 
     return this; 
    } 

    public String getToken() { 
     return token; 
    } 

    public void setToken(String token) { 
     this.token = token; 
    } 

    public Authorization_credentials withToken(String token) { 
     this.token = token; 
     return this; 
    } 

    @Override 
    public String toString() { 
     Gson gson = new Gson(); 
     String json = gson.toJson(Authorization_credentials.class); 
     return json; 
    } 
} 

Answer 1

String json = gson.toJson(Authorization_credentials.class); 

Falsch. Sie müssen ein Objekt übergeben, das Sie konvertieren möchten. Ändern Sie ihn auf diesem

String json = gson.toJson(this, Authorization_credentials.class); 

Wenn Sie versuchen, Gson zu verwenden anderswo erinnern, das Objekt zu übergeben als ersten Parameter und Objekttyp als zweite zu konvertieren.