在Android Studio中使用Volley解析ArrayJson时出现错误请求 [英] Bad Request while parsing ArrayJson using Volley in Android Studio
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问题描述
我也是Android的JSON解析的新手,我尝试了Internet上的教程,以及如何解析未命名数组,这是我的Json数组(
I'm new in JSON parsing also for Android, I tried a tutorial found in Internet and how to parse an UnNamed Array this is my Json Array (https://webservicesocs.herokuapp.com/api/DispoMachines) that i want to parse and display it in Android in ListView And this is my code in Android using Volley Library :
String ServiceURL = "https://webservicesocs.herokuapp.com/api/DispoMachines";
machinesListVeiw = (ListView) findViewById(R.id.machines_lv);
final String result = "";
final ArrayList<Machine> machines = new ArrayList<>();
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET, ServiceURL, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONArray json = new JSONArray(result);
for(int i=0;i<json.length();i++){
JSONObject e = json.getJSONObject(i);
Machine machine = new Machine();
machine.setMachineId(e.getString("MachineId"));
machine.setStatut(e.getString("Statut"));
machine.setMachineImage(e.getString("MachineImage"));
machine.setTempsResteEnMinutes(e.getString("TempsResteEnMinutes"));
machines.add(machine);
}
MachineAdapter arrayAdapter = new MachineAdapter(AvaiableMachinesActivity.this, machines);
machinesListVeiw.setAdapter(arrayAdapter);
} catch (JSONException e) {
Toast.makeText(AvaiableMachinesActivity.this, "BAD JSON ", Toast.LENGTH_SHORT).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(AvaiableMachinesActivity.this, "BAD REQUEST", Toast.LENGTH_SHORT).show();
}
});
AppController.getInstance(AvaiableMachinesActivity.this).addToRequestQueue(jsonObjReq);
**我收到了BAD REQUEST的错误,由于Volley Library,这是一个ErrorResponse **
**I get the error of BAD REQUEST, so it's an ErrorResponse due to Volley Library **
推荐答案
您的json响应以JSONArray开头,您可以将请求更改为JSONArray.
your json response is start with JSONArray you can change your request to JSONArray.
String ServiceURL = "https://webservicesocs.herokuapp.com/api/DispoMachines";
machinesListVeiw = (ListView) findViewById(R.id.machines_lv);
final String result = "";
final ArrayList<Machine> machines = new ArrayList<>();
JsonArrayRequest req = new JsonArrayRequest(urlJsonArry,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
Log.d(TAG, response.toString());
try
{
// Parsing json array response
// loop through each json object
for(int i=0;i<response.length();i++)
{
JSONObject e= (JSONObject) response.get(i);
Machine machine = new Machine();
machine.setMachineId(e.getString("MachineId"));
machine.setStatut(e.getString("Statut"));
machine.setMachineImage(e.getString("MachineImage"));
machine.setTempsResteEnMinutes(e.getString("TempsResteEnMinutes"));
machines.add(machine);
}
MachineAdapter arrayAdapter = new MachineAdapter(AvaiableMachinesActivity.this, machines);
machinesListVeiw.setAdapter(arrayAdapter);
}
catch (JSONException e) {
e.printStackTrace();
}
hidepDialog();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(req);
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