我正在从URL解析数据,其得到下面提到的错误.
原始数据从Server.Iot能够使用Json解析分割数据完美显示.
请帮我解决这个错误
编辑:1
来自URL的Json响应
[
{
"ID": 4,
"Name": "Vinoth",
"Contact": "1111111111",
"Msg": "1"
},
{
"ID": 5,
"Name": "Mani",
"Contact": "22222222",
"Msg": "1"
},
{
"ID": 6,
"Name": "Manoj",
"Contact": "33333333333",
"Msg": "1"
}
]
错误:
org.json.JSONException: Value [{"ID":1,"Name":"Lalita","Contact":"9997162499","Msg":"1"},{"ID":2,"Name":"kumar","Contact":"123456789","Msg":"1"}] of type java.lang.String cannot be converted to JSONArray
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at org.json.JSON.typeMismatch(JSON.java:111)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at org.json.JSONArray.(JSONArray.java:96)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at org.json.JSONArray.(JSONArray.java:108)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at com.knowledgeflex.restapidemo.MainActivity$LoadService.onPostExecute(MainActivity.java:135)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at com.knowledgeflex.restapidemo.MainActivity$LoadService.onPostExecute(MainActivity.java:58)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at android.os.AsyncTask.finish(AsyncTask.java:632)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at android.os.AsyncTask.access$600(AsyncTask.java:177)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:645)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at android.os.Handler.dispatchMessage(Handler.java:102)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at android.os.Looper.loop(Looper.java:136)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at android.app.ActivityThread.main(ActivityThread.java:5584)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at java.lang.reflect.Method.invokeNative(Native Method)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at java.lang.reflect.Method.invoke(Method.java:515)
12-11 18:23:27.249 30195-30195/com.knowledgeflex.restapidemo W/System.err: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
12-11 18:23:27.259 30195-30195/com.knowledgeflex.restapidemo W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
12-11 18:23:27.259 30195-30195/com.knowledgeflex.restapidemo W/System.err: at dalvik.system.NativeStart.main(Native Method)
MainActivity.java
public class MainActivity extends Activity {
TextView name1,email,status,face;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final Button GetServerData = (Button) findViewById(R.id.button1);
name1 = (TextView)findViewById(R.id.sname);
email = (TextView)findViewById(R.id.email);
status = (TextView)findViewById(R.id.status);
face = (TextView)findViewById(R.id.fb);
GetServerData.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// Server Request URL
String serverURL = "http://webapp/api/values";
// Create Object and call AsyncTask execute Method
new LoadService().execute(serverURL);
}
});
}
// Class with extends AsyncTask class
private class LoadService extends AsyncTask {
private final HttpClient Client = new DefaultHttpClient();
private String Content;
private String Error = null;
private final String TAG = null;
String name = null;
private ProgressDialog Dialog = new ProgressDialog(MainActivity.this);
TextView uiUpdate = (TextView) findViewById(R.id.textView2);
protected void onPreExecute() {
// NOTE: You can call UI Element here.
// UI Element
uiUpdate.setText("");
Dialog.setMessage("Loading service..");
Dialog.show();
}
// Call after onPreExecute method
protected Void doInBackground(String... urls) {
try {
// NOTE: Don't call UI Element here.
HttpGet httpget = new HttpGet(urls[0]);
ResponseHandler responseHandler = new BasicResponseHandler();
Content = Client.execute(httpget, responseHandler);
} catch (ClientProtocolException e) {
Error = e.getMessage();
cancel(true);
} catch (IOException e) {
Error = e.getMessage();
cancel(true);
}
return null;
}
protected void onPostExecute(Void unused) {
// Close progress dialog
Dialog.dismiss();
Log.e(TAG, "------------------------------------- Output: " + Content);
try {
JSONArray jArr=new JSONArray(Content);
for(int i=0;i
Hits..
10
根据您的响应,JSONArray和gson库最好在json数据解析时使用,因此在类下面使用任何类型的数据
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
public class ApiData {
@SerializedName("data")
@Expose
private JsonArray Data;
public List getData(Class c) {
Type type = new ListParams(c);
return new Gson().fromJson(Data, type);
}
private class ListParams implements ParameterizedType {
private Type type;
private ListParams(Type type) {
this.type = type;
}
@Override
public Type[] getActualTypeArguments() {
return new Type[]{type};
}
@Override
public Type getRawType() {
return ArrayList.class;
}
@Override
public Type getOwnerType() {
return null;
}
@Override
public boolean equals(Object o) {
return super.equals(o);
}
}
}
创建模型类,如:
public class Model{
String ID;
String Name;
String Contact;
String msg;
}
现在解析您的数据,如:
ApiData apiData = new Gson().fromJson(Content, ApiData.class);
Lis models = apiData.getData(Model.class);
如果您遇到任何问题或需要解释,请告诉我 (2认同)
Boopathi..
6
try {
Object jsonObject = new JSONTokener(Content).nextValue();
JSONArray jArr=new JSONArray(jsonObject );
for(int i=0;i
直接你不能将字符串应用于数组,你应该将字符串转换为jsonobject,然后你可以做对象到数组.希望你能理解
1> Hits..：
根据您的响应,JSONArray和gson库最好在json数据解析时使用,因此在类下面使用任何类型的数据
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
public class ApiData {
@SerializedName("data")
@Expose
private JsonArray Data;
public List getData(Class c) {
Type type = new ListParams(c);
return new Gson().fromJson(Data, type);
}
private class ListParams implements ParameterizedType {
private Type type;
private ListParams(Type type) {
this.type = type;
}
@Override
public Type[] getActualTypeArguments() {
return new Type[]{type};
}
@Override
public Type getRawType() {
return ArrayList.class;
}
@Override
public Type getOwnerType() {
return null;
}
@Override
public boolean equals(Object o) {
return super.equals(o);
}
}
}
创建模型类,如:
public class Model{
String ID;
String Name;
String Contact;
String msg;
}
现在解析您的数据,如:
ApiData apiData = new Gson().fromJson(Content, ApiData.class);
Lis models = apiData.getData(Model.class);
如果您遇到任何问题或需要解释,请告诉我
2> Boopathi..：
try {
Object jsonObject = new JSONTokener(Content).nextValue();
JSONArray jArr=new JSONArray(jsonObject );
for(int i=0;i
直接你不能将字符串应用于数组,你应该将字符串转换为jsonobject,然后你可以做对象到数组.希望你能理解
3> AndiGeeky..：
因为我在这里添加了转义到你的json只是暂时存储它:
请检查下面的解析代码,它对我有用:
String response = "[\r\n {\r\n \"ID\": 4,\r\n \"Name\": \"Vinoth\",\r\n \"Contact\": \"1111111111\",\r\n \"Msg\": \"1\"\r\n },\r\n {\r\n \"ID\": 5,\r\n \"Name\": \"Mani\",\r\n \"Contact\": \"22222222\",\r\n \"Msg\": \"1\"\r\n },\r\n {\r\n \"ID\": 6,\r\n \"Name\": \"Manoj\",\r\n \"Contact\": \"33333333333\",\r\n \"Msg\": \"1\"\r\n }\r\n]";
try {
JSONArray jsonArray = new JSONArray(response); // replace response with your response string
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
Log.e("ID", jsonObject.getInt("ID") + "");
Log.e("Name", jsonObject.getString("Name"));
Log.e("Contact", jsonObject.getString("Contact"));
Log.e("Msg", jsonObject.getString("Msg"));
}
} catch (JSONException e) {
e.printStackTrace();
}
我打印的日志:
12-17 15:42:54.459 9064-9064/com.example.testapplication E/ID:4 12-17 15:42:54.459 9064-9064/com.example.testapplication E/Name:Vinoth 12-17 15:42 :54.459 9064-9064/com.example.testapplication E /联系方式:1111111111 12-17 15:42:54.459 9064-9064/com.example.testapplication E/Msg:1 12-17 15:42:54.459 9064-9064/com.example.testapplication E/ID:5 12-17 15:42:54.459 9064-9064/com.example.testapplication E/Name:Mani 12-17 15:42:54.459 9064-9064/com.example.testapplication E /联系方式:22222222 12-17 15:42:54.459 9064-9064/com.example.testapplication E/Msg:1 12-17 15:42:54.459 9064-9064/com.example.testapplication E/ID:6 12- 17 15:42:54.459 9064-9064/com.example.testapplication E/Name:Manoj 12-17 15:42:54.459 9064-9064/com.example.testapplication E/Contact:33333333333 12-17 15:42:54.459 9064-9064/com.example.testapplication E/Msg:1
谢谢 ..!
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