我使用
android volley库！我有一些不明白从服务器发送请求与json和DELETE方法的问题.请求成功连接到服务器但服务器将收到的已发送参数为空.但标题请求工作正常！请帮我！
public void deletePoint(String id) throws JSONException {
dialog.show();
queue = Volley.newRequestQueue(getActivity(),new ExtHttpClientStack(new SslHttpClient().getHttpClient()));
String urlRequest = getUrl();
JSONObject param = new JSONObject();
param.put("id",id);
JsonObjectRequest userRequest = new JsonObjectRequest(Request.Method.DELETE,urlRequest,param,deletePointRequestSuccessListener(),reqErrorListener()){
@Override
public Map<String,String> getHeaders() throws AuthFailureError {
Map<String,String> headers = super.getHeaders();
if (headers == null || headers.equals(Collections.emptyMap())) {
headers = new HashMap<String,String>();
}
if (ProgressFragment.this.headers != null) {
headers.keySet().removeAll(ProgressFragment.this.headers.keySet());
headers.putAll(ProgressFragment.this.headers);
}
headers.put("Content-Type","application/json");
return headers;
}
};
userRequest.setRetryPolicy(new DefaultRetryPolicy(
MY_SOCKET_TIMEOUT_MS,DefaultRetryPolicy.DEFAULT_MAX_RETRIES,DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
dialog.show();
queue.add(userRequest);
}
private Response.Listener<JSONObject> deletePointRequestSuccessListener() {
return new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
dialog.hide();
Gson gson = new Gson();
Success resp = gson.fromJson(response.toString(),Success.class);
if(resp.isSuccess()){
Toast.makeText(getActivity(),getString(R.string.success),Toast.LENGTH_SHORT).show();
try {
getGraphData();
} catch (JSONException e) {
e.printstacktrace();
}
}
dialog.hide();
}
};
}
解决方法
这是
issue已经解决了
你可以重写HurlStack类
public class HurlStack implements HttpStack {
break;
case Method.DELETE:
connection.setRequestMethod("DELETE");
addBodyIfExists(connection,request); // here call addBodyIfExists method
break;
case Method.POST:
connection.setRequestMethod("POST");
例如,使用DELETE方法的请求将很容易作为POST
mQueue = Volley.newRequestQueue(context);
StringRequest postRequest = new StringRequest(Request.Method.DELETE,HttpUtils.URL_MSG,new Response.Listener<String>()
{
@Override
public void onResponse(String response) {
if (mCallBack!=null) {
mCallBack.success(response);
}
}
},new Response.ErrorListener()
{
@Override
public void onErrorResponse(VolleyError error) {
if (mCallBack!=null) {
mCallBack.fail(null);
}
}
}
) {
@Override
protected Map<String,String> getParams()
{
return params;
}
};
mQueue.add(postRequest);
那只能解决android os 5.0设备的问题
android os 4.2.2设备上有新问题
它将引发以下异常
java.net.ProtocolException: DELETE does not support writing
重写Volley.newRequestQueue(Context context,HttpStack stack)方法可以解决这个问题
public static RequestQueue newRequestQueue(Context context,HttpStack stack) {
.
.
.
if (stack == null) {
if (Build.VERSION.SDK_INT >= 9) {
stack = new OkHttpStack();
} else {
// Prior to Gingerbread,HttpUrlConnection was unreliable.
// See: http://android-developers.blogspot.com/2011/09/androids-http-clients.html
stack = new HttpClientStack(androidhttpclient.newInstance(userAgent));
}
}
.
.
.
return queue;
}
OkHttpStack.java(okhttp-1.6.0.jar)
public class OkHttpStack extends HurlStack {
private final OkHttpClient client;
public OkHttpStack() {
this(new OkHttpClient());
}
public OkHttpStack(OkHttpClient client) {
if (client == null) {
throw new NullPointerException("Client must not be null.");
}
this.client = client;
}
@Override protected HttpURLConnection createConnection(URL url) throws IOException {
return client.open(url);
}
}
它对我有用,希望能为你效劳