使得Android的使用AsyncTask的远程服务器呼叫时Illigal性格异常 [英] Illigal character exception when making a remote server call using AsyncTask in Android
本文介绍了使得Android的使用AsyncTask的远程服务器呼叫时Illigal性格异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有这样的code:
包com.problemio;进口java.io.BufferedReader中;
进口的java.io.InputStream;
进口java.io.InputStreamReader中;
进口的java.util.ArrayList;进口org.apache.http.HttpEntity;
进口org.apache.http.Htt presponse;
进口org.apache.http.NameValuePair;
进口org.apache.http.client.HttpClient;
进口org.apache.http.client.entity.UrlEn codedFormEntity;
进口org.apache.http.client.methods.HttpGet;
进口org.apache.http.client.methods.HttpPost;
进口org.apache.http.impl.client.DefaultHttpClient;
进口org.apache.http.message.BasicNameValuePair;进口android.app.Activity;
进口android.content.Intent;
进口android.os.AsyncTask;
进口android.os.Bundle;
进口android.util.Log;
进口android.view.View;
进口android.widget.Button;
进口android.widget.EditText;
进口android.widget.TextView;公共类LoginActivity扩展活动
{
私人TextView的TextView的; 公共无效的onCreate(捆绑savedInstanceState)
{
super.onCreate(savedInstanceState);
的setContentView(R.layout.login); //显示为LOGIN_EMAIL形式
最终的EditText表示loginEmail =(EditText上)findViewById(R.id.login_email);
字符串名称= loginEmail.getText()的toString()。 //显示为密码字段
最终的EditText密码=(EditText上)findViewById(R.id.password);
字符串文本= password.getText()的toString()。 //显示按钮提交
按钮提交=(按钮)findViewById(R.id.submit);
//为打造知名度的显示选项和忘记密码 // readWebpage(R.layout.login);
submit.setOnClickListener(新Button.OnClickListener()
{
公共无效的onClick(视图v)
{
。字符串email = loginEmail.getText()的toString();
。字符串传递= password.getText()的toString();
sendFeedback(通过电子邮件);
}
});
}
公共无效sendFeedback(字符串传递,字符串email)
{
Log.d(1,通);
Log.d(1,电子邮件); 的String [] = PARAMS新的String [] {URL,电子邮件,通};
DownloadWebPageTask任务=新DownloadWebPageTask();
task.execute(PARAMS);
} 私有类DownloadWebPageTask扩展的AsyncTask<弦乐,太虚,字符串>
{
@覆盖
保护字符串doInBackground(字符串... theParams)
{
Log.d(内部类,在后台做的东西); 串myUrl = theParams [0];
串myEmail = theParams [1];
串MYPASSWORD = theParams [2]; ArrayList的<&的NameValuePair GT; postParameters =新的ArrayList<&的NameValuePair GT;();
postParameters.add(新BasicNameValuePair(用户名,myEmail));
postParameters.add(新BasicNameValuePair(密码,MYPASSWORD)); 串响应=;
对于(字符串URL:theParams)
{
DefaultHttpClient客户端=新DefaultHttpClient();
HTTPGET HTTPGET =新HTTPGET(URL);
尝试
{
HTT presponse执行= client.execute(HTTPGET);
InputStream的内容= execute.getEntity()的getContent()。 的BufferedReader缓冲=新的BufferedReader(
新的InputStreamReader(内容));
字符串s =;
而((S = buffer.readLine())!= NULL){
响应+ = S;
} }
赶上(例外五)
{
e.printStackTrace();
}
}
返回响应;
}
@覆盖
保护无效onPostExecute(字符串结果)
{
Log.d(后执行,在后执行法);
textView.setText(结果);
}
} 公共无效readWebpage(查看视图)
{
Log.d(读取网页:,以读出网页方法);
DownloadWebPageTask任务=新DownloadWebPageTask();
task.execute(新的String [] {http://www.problemio.com/auth/mobile_login.php});
}
}
和我得到这个异常:
12月2日至23日:29:59.078:D / gralloc_goldfish(1799):无仿真模拟GPU检测。
十二月2日至23日:32:12.797:D / dalvikvm(1799):GC_CONCURRENT释放204K,4%免费9268K / 9607K,暂停30毫秒+ 8ms的
十二月2日至23日:32:16.327:D / 1(1799):123
十二月2日至23日:32:16.327:D / 1(1799):你好
十二月2日至23日:32:16.377:D /内部类:(1799):在后台做的东西
十二月2日至23日:32:16.977:W / System.err的(1799):java.lang.IllegalStateException:目标主机不能为空,或参数进行设置。方案= NULL,主机= NULL,PATH =你好
十二月2日至23日:32:16.977:W / System.err的(1799):在org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:591)
十二月2日至23日:32:16.987:W / System.err的(1799):在org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293)
十二月2日至23日:32:16.987:W / System.err的(1799):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
十二月2日至23日:32:16.987:W / System.err的(1799):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
十二月2日至23日:32:16.998:W / System.err的(1799):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
十二月2日至23日:32:16.998:W / System.err的(1799):在com.problemio.LoginActivity $ DownloadWebPageTask.doInBackground(LoginActivity.java:140)
十二月2日至23日:32:17.007:W / System.err的(1799):在com.problemio.LoginActivity $ DownloadWebPageTask.doInBackground(LoginActivity.java:1)
十二月2日至23日:32:17.017:W / System.err的(1799):在android.os.AsyncTask $ 2.call(AsyncTask.java:264)
十二月2日至23日:32:17.017:W / System.err的(1799):在java.util.concurrent.FutureTask中$ Sync.innerRun(FutureTask.java:305)
十二月2日至23日:32:17.017:W / System.err的(1799):在java.util.concurrent.FutureTask.run(FutureTask.java:137)
十二月2日至23日:32:17.027:W / System.err的(1799):在android.os.AsyncTask $ SerialExecutor $ 1.run(AsyncTask.java:208)
十二月2日至23日:32:17.037:W / System.err的(1799):在java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
十二月2日至23日:32:17.037:W / System.err的(1799):在java.util.concurrent.ThreadPoolExecutor中的$ Worker.run(ThreadPoolExecutor.java:569)
十二月2日至23日:32:17.037:W / System.err的(1799):在java.lang.Thread.run(Thread.java:856)
十二月2日至23日:32:17.057:W / System.err的(1799):java.lang.IllegalStateException:目标主机不能为空,或参数进行设置。方案= NULL,主机= NULL,PATH = 123
十二月2日至23日:32:17.057:W / System.err的(1799):在org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:591)
十二月2日至23日:32:17.068:W / System.err的(1799):在org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293)
十二月2日至23日:32:17.068:W / System.err的(1799):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
十二月2日至23日:32:17.068:W / System.err的(1799):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
十二月2日至23日:32:17.077:W / System.err的(1799):在org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
十二月2日至23日:32:17.077:W / System.err的(1799):在com.problemio.LoginActivity $ DownloadWebPageTask.doInBackground(LoginActivity.java:140)
十二月2日至23日:32:17.087:W / System.err的(1799):在com.problemio.LoginActivity $ DownloadWebPageTask.doInBackground(LoginActivity.java:1)
十二月2日至23日:32:17.087:W / System.err的(1799):在android.os.AsyncTask $ 2.call(AsyncTask.java:264)
十二月2日至23日:32:17.087:W / System.err的(1799):在java.util.concurrent.FutureTask中$ Sync.innerRun(FutureTask.java:305)
十二月2日至23日:32:17.097:W / System.err的(1799):在java.util.concurrent.FutureTask.run(FutureTask.java:137)
十二月2日至23日:32:17.097:W / System.err的(1799):在android.os.AsyncTask $ SerialExecutor $ 1.run(AsyncTask.java:208)
十二月2日至23日:32:17.097:W / System.err的(1799):在java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
十二月2日至23日:32:17.107:W / System.err的(1799):在java.util.concurrent.ThreadPoolExecutor中的$ Worker.run(ThreadPoolExecutor.java:569)
十二月2日至23日:32:17.107:W / System.err的(1799):在java.lang.Thread.run(Thread.java:856)
十二月2日至23日:32:17.107:D /后执行:(1799):在后执行方法
十二月2日至23日:32:17.107:D / AndroidRuntime(1799):关闭VM
十二月2日至23日:32:17.107:W / dalvikvm(1799):主题ID = 1:螺纹未捕获的异常(组= 0x409c01f8)退出
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):致命异常:主要
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):显示java.lang.NullPointerException
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在com.problemio.LoginActivity $ DownloadWebPageTask.onPostExecute(LoginActivity.java:164)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在com.problemio.LoginActivity $ DownloadWebPageTask.onPostExecute(LoginActivity.java:1)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在android.os.AsyncTask.finish(AsyncTask.java:602)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在android.os.AsyncTask.access $ 600(AsyncTask.java:156)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在android.os.AsyncTask $ InternalHandler.handleMessage(AsyncTask.java:615)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在android.os.Handler.dispatchMessage(Handler.java:99)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在android.os.Looper.loop(Looper.java:137)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在android.app.ActivityThread.main(ActivityThread.java:4424)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在java.lang.reflect.Method.invokeNative(本机方法)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在java.lang.reflect.Method.invoke(Method.java:511)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:784)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
十二月2日至23日:32:17.138:E / AndroidRuntime(1799):在dalvik.system.NativeStart.main(本机方法)
解决方案
替换为:
为(字符串URL:theParams)
{
DefaultHttpClient客户端=新DefaultHttpClient();
HTTPGET HTTPGET =新HTTPGET(URL);
这一点:
DefaultHttpClient客户端=新DefaultHttpClient();
HTTPGET HTTPGET =新HTTPGET(myUrl);
此外,你不使用 postParameters
变量。
I have this code:
package com.problemio;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class LoginActivity extends Activity
{
private TextView textView;
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
// Show form for login_email
final EditText loginEmail = (EditText) findViewById(R.id.login_email);
String name = loginEmail.getText().toString();
// Show field for password
final EditText password = (EditText) findViewById(R.id.password);
String text = password.getText().toString();
// Show button for submit
Button submit = (Button)findViewById(R.id.submit);
// Show options for create-profile and forgot-password
//readWebpage( R.layout.login) ;
submit.setOnClickListener(new Button.OnClickListener()
{
public void onClick(View v)
{
String email = loginEmail.getText().toString();
String pass = password.getText().toString();
sendFeedback(pass, email);
}
});
}
public void sendFeedback(String pass , String email)
{
Log.d( "1" , pass );
Log.d( "1" , email );
String[] params = new String[] { "url", email, pass };
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(params);
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String>
{
@Override
protected String doInBackground(String... theParams)
{
Log.d( "Inner class: " , "Doing stuff in background" );
String myUrl = theParams[0];
String myEmail = theParams[1];
String myPassword = theParams[2];
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("username", myEmail ));
postParameters.add(new BasicNameValuePair("password", myPassword ));
String response = "";
for (String url : theParams)
{
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
try
{
HttpResponse execute = client.execute(httpGet);
InputStream content = execute.getEntity().getContent();
BufferedReader buffer = new BufferedReader(
new InputStreamReader(content));
String s = "";
while ((s = buffer.readLine()) != null) {
response += s;
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
return response;
}
@Override
protected void onPostExecute(String result)
{
Log.d( "Post execute: " , "In the post-execute method" );
textView.setText(result);
}
}
public void readWebpage(View view)
{
Log.d( "Read webpage: " , "In the read webpage method" );
DownloadWebPageTask task = new DownloadWebPageTask();
task.execute(new String[] { "http://www.problemio.com/auth/mobile_login.php" });
}
}
and I get this exception:
02-23 12:29:59.078: D/gralloc_goldfish(1799): Emulator without GPU emulation detected.
02-23 12:32:12.797: D/dalvikvm(1799): GC_CONCURRENT freed 204K, 4% free 9268K/9607K, paused 30ms+8ms
02-23 12:32:16.327: D/1(1799): 123
02-23 12:32:16.327: D/1(1799): hello
02-23 12:32:16.377: D/Inner class:(1799): Doing stuff in background
02-23 12:32:16.977: W/System.err(1799): java.lang.IllegalStateException: Target host must not be null, or set in parameters. scheme=null, host=null, path=hello
02-23 12:32:16.977: W/System.err(1799): at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:591)
02-23 12:32:16.987: W/System.err(1799): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293)
02-23 12:32:16.987: W/System.err(1799): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
02-23 12:32:16.987: W/System.err(1799): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
02-23 12:32:16.998: W/System.err(1799): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
02-23 12:32:16.998: W/System.err(1799): at com.problemio.LoginActivity$DownloadWebPageTask.doInBackground(LoginActivity.java:140)
02-23 12:32:17.007: W/System.err(1799): at com.problemio.LoginActivity$DownloadWebPageTask.doInBackground(LoginActivity.java:1)
02-23 12:32:17.017: W/System.err(1799): at android.os.AsyncTask$2.call(AsyncTask.java:264)
02-23 12:32:17.017: W/System.err(1799): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
02-23 12:32:17.017: W/System.err(1799): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
02-23 12:32:17.027: W/System.err(1799): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
02-23 12:32:17.037: W/System.err(1799): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-23 12:32:17.037: W/System.err(1799): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-23 12:32:17.037: W/System.err(1799): at java.lang.Thread.run(Thread.java:856)
02-23 12:32:17.057: W/System.err(1799): java.lang.IllegalStateException: Target host must not be null, or set in parameters. scheme=null, host=null, path=123
02-23 12:32:17.057: W/System.err(1799): at org.apache.http.impl.client.DefaultRequestDirector.determineRoute(DefaultRequestDirector.java:591)
02-23 12:32:17.068: W/System.err(1799): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:293)
02-23 12:32:17.068: W/System.err(1799): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
02-23 12:32:17.068: W/System.err(1799): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
02-23 12:32:17.077: W/System.err(1799): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
02-23 12:32:17.077: W/System.err(1799): at com.problemio.LoginActivity$DownloadWebPageTask.doInBackground(LoginActivity.java:140)
02-23 12:32:17.087: W/System.err(1799): at com.problemio.LoginActivity$DownloadWebPageTask.doInBackground(LoginActivity.java:1)
02-23 12:32:17.087: W/System.err(1799): at android.os.AsyncTask$2.call(AsyncTask.java:264)
02-23 12:32:17.087: W/System.err(1799): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
02-23 12:32:17.097: W/System.err(1799): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
02-23 12:32:17.097: W/System.err(1799): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
02-23 12:32:17.097: W/System.err(1799): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
02-23 12:32:17.107: W/System.err(1799): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
02-23 12:32:17.107: W/System.err(1799): at java.lang.Thread.run(Thread.java:856)
02-23 12:32:17.107: D/Post execute:(1799): In the post-execute method
02-23 12:32:17.107: D/AndroidRuntime(1799): Shutting down VM
02-23 12:32:17.107: W/dalvikvm(1799): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
02-23 12:32:17.138: E/AndroidRuntime(1799): FATAL EXCEPTION: main
02-23 12:32:17.138: E/AndroidRuntime(1799): java.lang.NullPointerException
02-23 12:32:17.138: E/AndroidRuntime(1799): at com.problemio.LoginActivity$DownloadWebPageTask.onPostExecute(LoginActivity.java:164)
02-23 12:32:17.138: E/AndroidRuntime(1799): at com.problemio.LoginActivity$DownloadWebPageTask.onPostExecute(LoginActivity.java:1)
02-23 12:32:17.138: E/AndroidRuntime(1799): at android.os.AsyncTask.finish(AsyncTask.java:602)
02-23 12:32:17.138: E/AndroidRuntime(1799): at android.os.AsyncTask.access$600(AsyncTask.java:156)
02-23 12:32:17.138: E/AndroidRuntime(1799): at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615)
02-23 12:32:17.138: E/AndroidRuntime(1799): at android.os.Handler.dispatchMessage(Handler.java:99)
02-23 12:32:17.138: E/AndroidRuntime(1799): at android.os.Looper.loop(Looper.java:137)
02-23 12:32:17.138: E/AndroidRuntime(1799): at android.app.ActivityThread.main(ActivityThread.java:4424)
02-23 12:32:17.138: E/AndroidRuntime(1799): at java.lang.reflect.Method.invokeNative(Native Method)
02-23 12:32:17.138: E/AndroidRuntime(1799): at java.lang.reflect.Method.invoke(Method.java:511)
02-23 12:32:17.138: E/AndroidRuntime(1799): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
02-23 12:32:17.138: E/AndroidRuntime(1799): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
02-23 12:32:17.138: E/AndroidRuntime(1799): at dalvik.system.NativeStart.main(Native Method)
解决方案
Replace the for:
for (String url : theParams)
{
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(url);
With this:
DefaultHttpClient client = new DefaultHttpClient();
HttpGet httpGet = new HttpGet(myUrl);
Also, you're not using the postParameters
variable.
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