在我的应用程序中，我需要使用HttpPut方法将一些参数发布到服务器。因此，我使用基本身份验证技术检查并成功以这种方式获得相同。但是当我试图用Json Volley实现同样的功能时，我无法得到结果。每次抛出服务器错误。
这是我使用Asynctask ::
传递基本身份验证的代码@Override
protected Void doInBackground( String... params )
{
// TODO Auto-generated method stub
try
{
HttpPut request = new HttpPut( params[0] );
Log.d("debug", "Posting URL" + params[0]);
String creds = String.format( "%s:%s",
"user123",
"abcd" );
String auth = "Basic " + Base64.encodeToString( creds.getBytes(),
Base64.NO_WRAP );
request.setHeader( "Authorization",
auth );
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("id", "409"));
urlParameters.add(new BasicNameValuePair("parent_id", "0"));
urlParameters.add(new BasicNameValuePair("content", "I am android developer"));
urlParameters.add(new BasicNameValuePair("email", "email@example.com"));
urlParameters.add(new BasicNameValuePair("username", "King Of Masses"));
request.setEntity(new UrlEncodedFormEntity(urlParameters));
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpResponse response = httpClient.execute( request );
HttpEntity Entity = response.getEntity();
String jsondata = EntityUtils.toString( Entity );
Log.d( "debug",
"Response Code:: " + response.getStatusLine().getStatusCode() );
Log.d( "debug",
"Json Data in Asynctask:: " + jsondata );
JSONObject ljsJsonObject=new JSONObject(jsondata);
Log.d( "debug",
"Json Object Data:: " + ljsJsonObject.toString() );
}
catch( ClientProtocolException e )
{
Log.d( "debug",
"Exception" + e.toString() );
e.printStackTrace();
}
catch( IOException e )
{
Log.d( "debug",
"Exception" + e.toString() );
e.printStackTrace();
}
catch( Exception e )
{
e.printStackTrace();
}
return null;
}
所以在上面的方式我得到了我所期望的结果..但是我无法用VolleyJson实现相同的...任何人都可以指导我如何实现这一点..我尝试过很多方法（getBody（） ，getParams（）），但不幸的是没有任何对我有用..
任何帮助都将非常感谢..谢谢
答案 0 :(得分：1)
Android Volley中存在一个错误，它没有读取getParas键值对。
您有2个选项
使用StringRequest然后将其解析为JSON（我使用它！） - 就像这样 - 然后像正常情况一样覆盖getParams方法。
RequestQueue queue = Volley.newRequestQueue(this);
String url ="http://www.google.com";
// Request a string response from the provided URL.
StringRequest stringRequest = new StringRequest(Request.Method.GET, url,
new Response.Listener<String>() {
@Override
public void onResponse(String response) {
JSONObject obj = new JSONObject(response);
//Now you can manipulate/store your JSON
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
mTextView.setText("That didn't work!");
}
})
{
protected Map<string, string=""> getParams() throws com.android.volley.AuthFailureError {
Map<string, string=""> params = new HashMap<string, string="">();
params.put("param1", num1);
params.put("param2", num2);
return params;
};
};
// Add the request to the RequestQueue.
queue.add(stringRequest);
使用自定义请求对象 - 类似于此类
CustomRequest request = new CustomRequest(Method.POST, URL, null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Toast.makeText(getActivity(), response.toString(), Toast.LENGTH_SHORT).show();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(getActivity(), "Error.", Toast.LENGTH_SHORT).show();
}
}) {
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<String, String>();
params.put("id", id);
params.put("password", password);
return params;
}
};
VolleySingleton.getInstance().addToRequestQueue(request);
CustomRequest帮助程序的代码已发布here
答案 1 :(得分：0)
经过几步之后，我终于得到了我的问题的解决方案，我也得到了与VollyJson相同的结果。我在这里发布解决方案。这可能对将来的某些人有帮助。
这是我的VollyJson电话::
String postUrl="http://xxxxxxxxx/xxxx";
final List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("id", "409"));
params.add(new BasicNameValuePair("parent_id", "0"));
params.add(new BasicNameValuePair("content", "I am android developer"));
params.add(new BasicNameValuePair("email", "email@example.com"));
params.add(new BasicNameValuePair("username", "King Of Masses"));
StringRequest stringReq = new StringRequest( Method.PUT,
postUrl,
new Response.Listener<String>()
{
@Override
public void onResponse( String arg0 )
{
// TODO Auto-generated method stub
mListener.notifyResponse( arg0 );
}
},
new Response.ErrorListener()
{
@Override
public void onErrorResponse( VolleyError arg0 )
{
// TODO Auto-generated method stub
trimErrorMessage( arg0,
mListener );
}
} )
{
@Override
public Map<String, String> getHeaders() throws AuthFailureError
{
// TODO Auto-generated method stub
HashMap<String, String> params1 = new HashMap<String, String>();
String cred = String.format( "%s:%s",
"user123",
"abcd" );
String auth = "Basic " + Base64.encodeToString( cred.getBytes(),
Base64.NO_WRAP );
/*params1.put( "Content-Type",
"application/json; charset=utf-8" );*/
params1.put( "Authorization",
auth );
return params1;
}
@Override
protected Map<String, String> getParams() throws AuthFailureError
{
// TODO Auto-generated method stub
Map<String, String> nParams = new HashMap<String, String>();
for( int i = 0; i < params.size(); i++ )
{
nParams.put( params.get( i ).getName(),
params.get( i ).getValue() );
}
return nParams;
}
};
int socketTime = 30000;
RetryPolicy policy = new DefaultRetryPolicy( socketTime,
DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT );
stringReq.setRetryPolicy( policy );
AppController.getInstance().adToRequestQure( stringReq );
这是我的AppController
public class AppController extends Application
{
public static final String TAG = AppController.class.getSimpleName();
private RequestQueue mRequestQueue;
private ImageLoader mImageLoader;
private DisplayImageOptions options;
LruBitmapCache mLruBitmapCache;
MixpanelAPI mixPanel;
public static GoogleAnalytics analytics;
public static Tracker tracker;
private static AppController mInstance;
@Override
public void onCreate()
{
// TODO Auto-generated method stub
super.onCreate();
mInstance = this;
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder( getApplicationContext() ).imageDownloader( new BaseImageDownloader( getApplicationContext(),
5 * 1000,
20 * 1000 ) )
.build();
options = new DisplayImageOptions.Builder().showImageOnFail( R.drawable.no_image )
.showImageOnLoading( R.drawable.no_image )
.imageScaleType( ImageScaleType.EXACTLY )
.bitmapConfig( Bitmap.Config.RGB_565 )
.build();
ImageLoader.getInstance().init( config );
YandexMetrica.initialize(getApplicationContext(), AnalyticsUtills.KAPITAL_APP_API_KEY_YANDIX);
}
public static synchronized AppController getInstance()
{
return mInstance;
}
public RequestQueue getRequestQueue()
{
if( mRequestQueue == null )
{
mRequestQueue = Volley.newRequestQueue( getApplicationContext() );
}
return mRequestQueue;
}
public MixpanelAPI getMixpanelRef()
{
return MixpanelAPI.getInstance(getApplicationContext(), AnalyticsUtills.KAPITAL_APP_API_KEY_MIXPANEL);
}
public Tracker getGoogleTrackerRef()
{
analytics = GoogleAnalytics.getInstance(getApplicationContext());
tracker = analytics.newTracker(AnalyticsUtills.KAPITAL_APP_API_KEY_GOOGLE);
return tracker;
}
public ImageLoader getImageLoader()
{
if( mImageLoader == null )
{
mImageLoader = ImageLoader.getInstance();
}
return mImageLoader;
}
public DisplayImageOptions getDisplayImageOptions()
{
if( options == null )
{
options = new DisplayImageOptions.Builder().showImageOnFail( R.drawable.no_image )
.showImageOnLoading( R.drawable.no_image )
.imageScaleType( ImageScaleType.EXACTLY )
.displayer( new FadeInBitmapDisplayer( 300 ) )
.bitmapConfig( Bitmap.Config.RGB_565 )
.build();
}
return options;
}
public LruBitmapCache getLruBitmapCache()
{
if( mLruBitmapCache == null )
mLruBitmapCache = new LruBitmapCache();
return this.mLruBitmapCache;
}
public <T> void addToRequestQueue( Request<T> req,
String tag )
{
Log.d( "debug",
"TAG is not ther" );
Log.d( "debug",
"Quew nu" + getRequestQueue().getSequenceNumber() );
req.setTag( TextUtils.isEmpty( tag ) ? TAG
: tag );
getRequestQueue().add( req );
}
public <T> void adToRequestQure( Request<T> req )
{
req.setTag( TAG );
getRequestQueue().add( req );
}
public void cancelPendingRequests( Object tag )
{
if( mRequestQueue != null )
{
mRequestQueue.cancelAll( tag );
}
}
}
干杯!!!