Question

public class MainActivity extends AppCompatActivity {


TextView textView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    final Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    textView = (TextView) findViewById(R.id.textView1);



    FloatingActionButton fab = (FloatingActionButton) 
findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
//I am getting error on this line becuse ACC_id variable is double and the data coming from server might have some blank value so it is giving me exception  
            AccountDetailsList list = new Gson().fromJson(getData(), AccountDetailsList.class);
                    Log.d("MAIN_ACTIVITY", list.getAccountDetails().size() + " ");
                    for (AccountDetails accountDetails : list.getAccountDetails()) {
                        Log.d("MAIN_ACTIVITY", accountDetails.getCUSTOMER_NAME());
                    }     
});
// this is the sample json data which is coming from server
public String getData() {
    return "{\"ACCOUNT_DETAILS\":[{\"ACC_ID\":\"\",\"ACC_NUMBER\":\"\",\"CUSTOMER_NAME\":\"\",\"CONTACT_NO\":\"\"},{\"ACC_ID\":1,\"ACC_NUMBER\":12345,\"CUSTOMER_NAME\":\"Cheenu\",\"CONTACT_NO\":\"\"},{\"ACC_ID\":2,\"ACC_NUMBER\":67890,\"CUSTOMER_NAME\":\"Dhruv\",\"CONTACT_NO\":\"\"},{\"ACC_ID\":3,\"ACC_NUMBER\":13467,\"CUSTOMER_NAME\":\"Chetan\",\"CONTACT_NO\":\"\"},{\"ACC_ID\":4,\"ACC_NUMBER\":16789,\"CUSTOMER_NAME\":\"Darsh\",\"CONTACT_NO\":\"\"},{\"ACC_ID\":5,\"ACC_NUMBER\":98764,\"CUSTOMER_NAME\":\"Arsh\",\"CONTACT_NO\":\"\"},{\"ACC_ID\":6,\"ACC_NUMBER\":130500,\"CUSTOMER_NAME\":\"Madhur\",\"CONTACT_NO\":\"\"}]}";
}}

当我解析JSON数据时，我得到以下异常线：例外

致命的例外：主要处理：tfs.anonestep.com.tfs，PID：26604 java.lang.NumberFormatException：无效的double：“”在java.lang.StringToReal.invalidReal（StringToReal.java:63）在java.lang.StringToReal.parseDouble（StringToReal.java:267）在java.lang.Double.parseDouble（Double.java:301）在com.google.gson.stream.JsonReader.nextDouble（JsonReader.java:925）在com.google.gson.Gson $ 3.read（Gson.java:260）在com.google.gson.Gson $ 3.read（Gson.java:254）在com.google.gson.internal.bind.ReflectiveTypeAdapterFactory $ 1.read（ReflectiveTypeAdapterFactory.java:117）在com.google.gson.internal.bind.ReflectiveTypeAdapterFactory $ Adapter.read（ReflectiveTypeAdapterFactory.java:217）在com.google.gson.internal.bind.TypeAdapterRuntimeTypeWrapper.read（TypeAdapterRuntimeTypeWrapper.java:40）在com.google.gson.internal.bind.CollectionTypeAdapterFactory $ Adapter.read（CollectionTypeAdapterFactory.java:81）在com.google.gson.internal.bind.CollectionTypeAdapterFactory $ Adapter.read（CollectionTypeAdapterFactory.java:60）在com.google.gson.internal.bind.ReflectiveTypeAdapterFactory $ 1.read（ReflectiveTypeAdapterFactory.java:117）在com.google.gson.internal.bind.ReflectiveTypeAdapterFactory $ Adapter.read（ReflectiveTypeAdapterFactory.java:217）在com.google.gson.Gson.fromJson（Gson.java:814）在com.google.gson.Gson.fromJson（Gson.java:779）在com.google.gson.Gson.fromJson（Gson.java:728）在com.google.gson.Gson.fromJson（Gson.java:700） at tfs.anonestep.com.tfs.MainActivity $ 1.onResponse（MainActivity.java:49） at tfs.anonestep.com.tfs.MainActivity $ 1.onResponse（MainActivity.java:42）在com.android.volley.toolbox.StringRequest.deliverResponse（StringRequest.java:60）在com.android.volley.toolbox.StringRequest.deliverResponse（StringRequest.java:30）在com.android.volley.ExecutorDelivery $ ResponseDeliveryRunnable.run（ExecutorDelivery.java:99）在android.os.Handler.handleCallback（Handler.java:739）在android.os.Handler.dispatchMessage（Handler.java:95）在android.os.Looper.loop（Looper.java:148）在android.app.ActivityThread.main（ActivityThread.java:5539） at java.lang.reflect.Method.invoke（Native Method）在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:726）在com.android.internal.os.ZygoteInit.main（ZygoteInit.java:616）

模型类

    public class AccountDetailsList {
@SerializedName("ACCOUNT_DETAILS")
ArrayList<AccountDetails> accountDetails;

public ArrayList<AccountDetails> getAccountDetails() {
    return accountDetails;
}

public void setAccountDetails(ArrayList<AccountDetails> accountDetails) {
    this.accountDetails = accountDetails;
}
//Model class
}


public class AccountDetails {

double ACC_ID;
String CUSTOMER_NAME;
String ACC_NUMBER;
String CONTACT_NO;
}

如何使用Gson

0 个答案: