我正在尝试使用HttpPost向Web服务发送信息。为了在我的Activity中执行此操作，我创建了一个AsyncTask，在doInBackground中，我调用了HttpPost的方法。问题是抛出任何异常，我不知道如何解决异常。
我在这里尝试。
//activity
private void doInsert(final Usuario usuario){
//nome, email e senha chegam preenchidos
String[] em = etEmail.getText().toString().split("@");
if(emailIsExist){
Toast.makeText(this, "Email já cadastrado", Toast.LENGTH_SHORT).show();
}else{
progress = new CustomProgressDialog().getCustomProgress(null, CadastrarView.this);
progress.show();
//new UsuarioInsert().execute("insert");
new AsyncTask<String, Void, String>(){
@Override
protected String doInBackground(String... params) {
new UsuarioDAO().insert(usuario, fotoPerfil);
return "executed";
}
@Override
protected void onPostExecute(String result) {
progress.dismiss();
}
}.execute("");
}
}
HttpPost
public Boolean insert(Usuario u, String fotoPath){
HttpClient httpClient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(urlPost.toString());
Log.i("URL POST: ", urlPost.toString());
try {
File img = new File(fotoPath, ConvertStringToMD5.getMD5(u.getEmail().split("@")[0]));
httppost.addHeader("Authorization", "Basic " + BasicAuthenticationRest.getBasicAuthentication());
MultipartEntity me = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
me.addPart("nome", new StringBody(u.getNome()));
me.addPart("email", new StringBody(u.getEmail()));
me.addPart("senha", new StringBody(ConvertStringToMD5.getMD5(u.getSenha())));
me.addPart("device_tipo", new StringBody("android"));
me.addPart("device", new StringBody(AndroidReturnId.getAndroidId()));
me.addPart("uploadedfile", new FileBody(img, "image/png"));
httppost.setEntity(me);
HttpResponse response = httpClient.execute(httppost);
HttpEntity entity = response.getEntity();
Log.i("RESPONSE: ", EntityUtils.toString(entity));
if(entity != null){
String js = EntityUtils.toString(entity);
Log.i("JSON: ", js);
JSONObject json = new JSONObject(js);
if(json.getString("cod").equals("999")){
return true;
}
}
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return false;
}
异常
11-26 11:29:26.880: E/AndroidRuntime(13709): FATAL EXCEPTION: AsyncTask #1
11-26 11:29:26.880: E/AndroidRuntime(13709): java.lang.RuntimeException: An error occured while executing doInBackground()
11-26 11:29:26.880: E/AndroidRuntime(13709): at android.os.AsyncTask$3.done(AsyncTask.java:299)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:352)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.util.concurrent.FutureTask.setException(FutureTask.java:219)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.util.concurrent.FutureTask.run(FutureTask.java:239)
11-26 11:29:26.880: E/AndroidRuntime(13709): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.lang.Thread.run(Thread.java:841)
11-26 11:29:26.880: E/AndroidRuntime(13709): Caused by: java.lang.NullPointerException
11-26 11:29:26.880: E/AndroidRuntime(13709): at br.com.package.myapp.dao.UsuarioDAO.insert(UsuarioDAO.java:59)
11-26 11:29:26.880: E/AndroidRuntime(13709): at br.com.package.myapp.act.CadastrarView$UsuarioInsert.doInBackground(CadastrarView.java:180)
11-26 11:29:26.880: E/AndroidRuntime(13709): at br.com.package.myapp.act.CadastrarView$UsuarioInsert.doInBackground(CadastrarView.java:1)
11-26 11:29:26.880: E/AndroidRuntime(13709): at android.os.AsyncTask$2.call(AsyncTask.java:287)
11-26 11:29:26.880: E/AndroidRuntime(13709): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
11-26 11:29:26.880: E/AndroidRuntime(13709): ... 4 more
11-26 11:29:36.465: I/Choreographer(13709): Skipped 563 frames! The application may be doing too much work on its main thread.
11-26 11:29:37.380: E/WindowManager(13709): Activity br.com.package.myapp.act.CadastrarView has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{42fe1460 V.E..... R......D 0,0-684,192} that was originally added here
11-26 11:29:37.380: E/WindowManager(13709): android.view.WindowLeaked: Activity br.com.package.myapp.act.CadastrarView has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{42fe1460 V.E..... R......D 0,0-684,192} that was originally added here
11-26 11:29:37.380: E/WindowManager(13709): at android.view.ViewRootImpl.<init>(ViewRootImpl.java:452)
11-26 11:29:37.380: E/WindowManager(13709): at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:258)
11-26 11:29:37.380: E/WindowManager(13709): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:73)
11-26 11:29:37.380: E/WindowManager(13709): at android.app.Dialog.show(Dialog.java:287)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.act.CadastrarView.doInsert(CadastrarView.java:152)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.act.CadastrarView.access$3(CadastrarView.java:145)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.act.CadastrarView$1.emailIsExist(CadastrarView.java:135)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.dao.UsuarioDAO$1.onResponse(UsuarioDAO.java:144)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.dao.UsuarioDAO$1.onResponse(UsuarioDAO.java:1)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.cv.ApplicationController.deliverResponse(ApplicationController.java:120)
11-26 11:29:37.380: E/WindowManager(13709): at br.com.package.myapp.cv.ApplicationController.deliverResponse(ApplicationController.java:1)
11-26 11:29:37.380: E/WindowManager(13709): at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
11-26 11:29:37.380: E/WindowManager(13709): at android.os.Handler.handleCallback(Handler.java:730)
11-26 11:29:37.380: E/WindowManager(13709): at android.os.Handler.dispatchMessage(Handler.java:92)
11-26 11:29:37.380: E/WindowManager(13709): at android.os.Looper.loop(Looper.java:176)
11-26 11:29:37.380: E/WindowManager(13709): at android.app.ActivityThread.main(ActivityThread.java:5419)
11-26 11:29:37.380: E/WindowManager(13709): at java.lang.reflect.Method.invokeNative(Native Method)
11-26 11:29:37.380: E/WindowManager(13709): at java.lang.reflect.Method.invoke(Method.java:525)
11-26 11:29:37.380: E/WindowManager(13709): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
11-26 11:29:37.380: E/WindowManager(13709): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
11-26 11:29:37.380: E/WindowManager(13709): at dalvik.system.NativeStart.main(Native Method)
答案 0 :(得分：0)
我解决了这个问题。我的问题是当我发送图片时，我需要添加你的名字和类型。
这是我的表现。
public Boolean insert(Usuario u, String fotoPath){
HttpClient httpClient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(urlPost.toString());
try {
File img = new File(fotoPath);
httppost.addHeader("Authorization", "Basic " + BasicAuthenticationRest.getBasicAuthentication());
MultipartEntityBuilder me = MultipartEntityBuilder.create();
me.addTextBody("nome", u.getNome());
me.addTextBody("email", u.getEmail());
me.addTextBody("senha", ConvertStringToMD5.getMD5(u.getSenha()));
me.addTextBody("device_tipo", "android");
me.addTextBody("device", AndroidReturnId.getAndroidId());
me.addBinaryBody("uploadedfile", img, ContentType.create("image/jpg"), u.getEmail() + ".jpg");
httppost.setEntity(me.build());
HttpResponse response = httpClient.execute(httppost);
HttpEntity entity = response.getEntity();
if(entity != null){
String js = EntityUtils.toString(entity);
JSONObject json = new JSONObject(js);
if(json.getString("cod").equals("999")){
return true;
}
}
} catch (ClientProtocolException e) {
Log.e("ERROR: ", e.getLocalizedMessage());
} catch (IOException e) {
Log.e("ERROR: ", e.getLocalizedMessage());
} catch (JSONException e) {
Log.e("ERROR: ", e.getLocalizedMessage());
}
return false;
}