我有这个 CustomHttpClient 类，我在网上找到的：
public class CustomHttpClient {
public static final int HTTP_TIMEOUT=10000;
private static HttpClient mHttpClient;
private static HttpClient getHttpClient(){
if(mHttpClient==null){
mHttpClient = new DefaultHttpClient();
final HttpParams params = mHttpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT);
ConnManagerParams.setTimeout(params, HTTP_TIMEOUT);
}
return mHttpClient;
}
public static String executeHttpPost(String url, ArrayList<NameValuePair> postParameters) throws Exception {
BufferedReader in = null;
try{
HttpClient client = getHttpClient();
HttpPost request = new HttpPost(url);
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
request.setEntity(formEntity);
HttpResponse response = client.execute(request);//This is line 45, where the exception is thrown.
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
String result = sb.toString();
return result;
}finally{
if (in!=null){
try{
in.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
}
public static HttpResponse ResponseExecuteHttpPost(String url, ArrayList<NameValuePair> postParameters) throws Exception {
BufferedReader in = null;
try{
HttpClient client = getHttpClient();
HttpPost request = new HttpPost(url);
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
request.setEntity(formEntity);
HttpResponse response = client.execute(request);
return response;
}finally{
if (in!=null){
try{
in.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
}
public static String executeHttpGet(String url) throws Exception {
BufferedReader in = null;
try{
HttpClient client = getHttpClient();
HttpGet request = new HttpGet();
request.setURI(new URI(url));
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
String result = sb.toString();
return result;
} finally{
if(in!=null){
try{
in.close();
}catch (IOException e){
e.printStackTrace();
}
}
}
}
}
我这样使用它：
(...)
entrar.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
user=login.getText().toString();
String passtext=pass.getText().toString();
parameters=new ArrayList<NameValuePair>();
parameters.add(new BasicNameValuePair("j_username", user));
parameters.add(new BasicNameValuePair("j_password", passtext));
parameters.add(new BasicNameValuePair("movil", "si"));
respuesta=null;
try{
Thread thread=new Thread(){
public void run() {
try {
respuesta=CustomHttpClient.executeHttpPost(urlogin, parameters);
res=respuesta.toString();
(...)
我知道在 4.2.2 版本的 Android 中，每个 http 调用都必须在另一个线程中，否则会引发异常，但正如您所见，调用在另一个线程中......但我仍然收到 TimeoutException：
05-08 10:25:12.801: W/System.err(3191): org.apache.http.conn.ConnectTimeoutException: Connection timed out
05-08 10:25:12.811: W/System.err(3191): at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:123)
05-08 10:25:12.821: W/System.err(3191): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:144)
05-08 10:25:12.826: W/System.err(3191): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
05-08 10:25:12.831: W/System.err(3191): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
05-08 10:25:12.836: W/System.err(3191): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:360)
05-08 10:25:12.841: W/System.err(3191): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
05-08 10:25:12.851: W/System.err(3191): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
05-08 10:25:12.871: W/System.err(3191): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
05-08 10:25:12.886: W/System.err(3191): at com.publidirecta.vinceriazafata.CustomHttpClient.executeHttpPost(CustomHttpClient.java:45)
05-08 10:25:12.891: W/System.err(3191): at com.publidirecta.vinceriazafata.LoginActivity$3$1.run(LoginActivity.java:121)
服务器已启动，并且 url 正常。我已经尝试在另一个线程中的 CustomHttpClient 类中包含代码的一部分，但仍然无法正常工作：
public static String executeHttpPost(final String url, final ArrayList<NameValuePair> postParameters) throws Exception {
Thread thread=new Thread(){
public void run(){
BufferedReader in = null;
try{
HttpClient client = getHttpClient();
HttpPost request = new HttpPost(url);
UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(postParameters);
request.setEntity(formEntity);
HttpResponse response = client.execute(request);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
result = sb.toString();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
if (in!=null){
try{
in.close();
}catch(IOException e){
e.printStackTrace();
}
}
}
}
};
thread.start();
return result;
}
这个例外有什么帮助吗？谢谢你。
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