总结

以上是小编为你收集整理的httpClient.getConnectionManager（）已被弃用 – 应该使用什么？全部内容。

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.conn.ManagedClientConnectionImpl@604ed9f0 java.net.ConnectException: Connection refused: connect

Android 网络提交数据 (HttpConnection HttpClient) POST GET 方式

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
	android:id="@+id/widget38"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent"
	android:orientation="vertical"
	xmlns:android="http://schemas.android.com/apk/res/android">
<EditText
	android:id="@+id/et_username"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:hint="&#35831;&#36755;&#20837;&#29992;&#25143;&#21517;"
	android:textSize="18sp" />
<EditText
	android:id="@+id/et_password"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:hint="&#35831;&#36755;&#20837;&#23494;&#30721;"
	android:textSize="18sp" />
<Button
	android:id="@+id/btn_get"
	android:onClick="click"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:layout_weight="1000"
	android:text="GET提交" />
<Button
	android:id="@+id/btn_post"
	android:onClick="click"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:layout_weight="1000"
	android:text="POST提交" />
<Button
	android:id="@+id/btn_get_httpclient"
	android:onClick="click"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:layout_weight="1000"
	android:text="HttpClient Get提交" />
<Button
	android:id="@+id/btn_post_httpclient"
	android:onClick="click"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:layout_weight="1000"
	android:text="HttpClient POST提交" />
</LinearLayout>

package com.pas.postdata;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

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 com.pas.htmlview.utils.StreamTools;

import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.content.Context;
import android.text.TextUtils;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity
{

	private EditText et_username;
	private EditText et_password;

	private final int SHOWINFO = 0;
	private final int CHANGEUI = 1;

	private Handler handler = new Handler()
	{
		@Override
		public void handleMessage(android.os.Message msg)
		{
			switch (msg.what)
			{
			case SHOWINFO:
				ShowInfo(MainActivity.this, msg.obj.toString());
				break;
			case CHANGEUI:
				break;
			default:
				break;
			}
		};
	};

	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		et_username = (EditText) findViewById(R.id.et_username);
		et_password = (EditText) findViewById(R.id.et_password);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu)
	{
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	public void click(final View view)
	{
		final String username = et_username.getText().toString().trim();
		final String password = et_password.getText().toString().trim();

		if (TextUtils.isEmpty(username) || TextUtils.isEmpty(password))
		{
			Toast.makeText(this, "信息不可为空", Toast.LENGTH_LONG).show();
		} else
		{

			new Thread()
			{
				@Override
				public void run()
				{
					try
					{
						InputStream is = null;
						// GET方式
						if (view.getId() == R.id.btn_get)
						{
							is = getByHttpConnection(username, password);
						} else if (view.getId() == R.id.btn_post)
						{
							is = postByHttpConnection(username, password);
						} else if (view.getId() == R.id.btn_get_httpclient)
						{
							// HttpClient 方式
							is = getByHttpClient(username, password);
						} else if (view.getId() == R.id.btn_post_httpclient)
						{
							is = postByHttpClient(username, password);
						}

						final String res = StreamTools.StreamToString(is);
						if (res != null)
						{
							// 不使用handler的另一种方式
							// 这种方式也可以封装
							runOnUiThread(new Runnable()
							{

								@Override
								public void run()
								{
									ShowInfo(MainActivity.this, res);
								}
							});
						} else
						{
							handler.sendMessage(getMsg(SHOWINFO, "失败"));
						}
					} catch (Exception e)
					{
						e.printStackTrace();
						handler.sendMessage(getMsg(SHOWINFO, "获取失败"));
					}
				}
			}.start();
		}
	}

	private InputStream postByHttpConnection(final String username, final String password) throws MalformedURLException, IOException, ProtocolException
	{
		HttpURLConnection conn;
		// POST方式
		String path = "http://192.168.1.100:8080/ServletTest/Login";
		URL post_url = new URL(path);
		conn = (HttpURLConnection) post_url.openConnection();
		conn.setRequestMethod("POST");

		// 准备数据
		String data = "username=" + username + "&password=" + password;
		byte[] data_bytes = data.getBytes();

		conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
		conn.setRequestProperty("Content-Length", data_bytes.length + "");
		// POST方式：浏览器将数据以流的方式写入服务器
		conn.setDoOutput(true);// 允许向外部写入数据
		OutputStream os = conn.getOutputStream();
		os.write(data_bytes);
		conn.setConnectTimeout(5000);

		if (200 == conn.getResponseCode())
		{
			return conn.getInputStream();
		}
		return null;
	}

	private InputStream getByHttpConnection(final String username, final String password) throws UnsupportedEncodingException, MalformedURLException, IOException, ProtocolException
	{
		HttpURLConnection conn;
		String path = "http://192.168.1.100:8080/ServletTest/Login" + "?username=" + URLEncoder.encode(username, "utf-8") + "&password=" + URLEncoder.encode(password, "utf-8");
		URL get_url = new URL(path);
		conn = (HttpURLConnection) get_url.openConnection();
		conn.setRequestMethod("GET");
		conn.setConnectTimeout(5000);
		return conn.getInputStream();
	}

	private InputStream getByHttpClient(final String username, final String password) throws Exception
	{
		String path = "http://192.168.1.100:8080/ServletTest/Login" + "?username=" + URLEncoder.encode(username, "utf-8") + "&password=" + URLEncoder.encode(password, "utf-8");
		HttpClient client = new DefaultHttpClient();

		HttpGet httpGet = new HttpGet(path);

		HttpResponse response = client.execute(httpGet);
		if (200 == response.getStatusLine().getStatusCode())
		{
			return response.getEntity().getContent();
		}
		return null;
	}

	private InputStream postByHttpClient(final String username, final String password) throws Exception
	{
		String path = "http://192.168.1.100:8080/ServletTest/Login";
		HttpClient client = new DefaultHttpClient();
		HttpPost httpPost = new HttpPost(path);
		
		List<NameValuePair> params = new ArrayList<NameValuePair>();
		params.add(new BasicNameValuePair("username", username));
		params.add(new BasicNameValuePair("password", password));
		httpPost.setEntity(new UrlEncodedFormEntity(params, "utf-8"));
		
		HttpResponse response = client.execute(httpPost);
		if (200 == response.getStatusLine().getStatusCode())
		{
			return response.getEntity().getContent();
		}
		return null;
	}

	public Message getMsg(int what, Object obj)
	{
		Message msg = new Message();
		msg.what = what;
		msg.obj = obj;
		return msg;
	}

	public void ShowInfo(Context context, String info)
	{
		Toast.makeText(context, info, Toast.LENGTH_SHORT).show();
	}
}

package com.pas.htmlview.utils;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

public class StreamTools
{

	public static String StreamToString(InputStream is)
	{
		try
		{
			ByteArrayOutputStream baos = new ByteArrayOutputStream();
			int len = 0;
			byte[] buffer = new byte[1024];
			while ((len = is.read(buffer)) != -1)
			{
				baos.write(buffer, 0, len);
			}
			is.close();
			baos.close();
			byte[] res = baos.toByteArray();
			String tem=new String(res);
			return new String(res);
		} catch (Exception e)
		{
			e.printStackTrace();
			return null;
		}
	}
}

apache HttpClient API中的setConnectionTimeout，setSoTimeout和“ http.connection- manager.timeout”之间有什么区别

两者之间有什么区别（标记为评论）：

MultiThreadedHttpConnectionManager connManag =  new MultiThreadedHttpConnectionManager();HttpConnectionManagerParams managParams = connManag.getParams();managParams.setConnectionTimeout(connectiontimeout); // 1managParams.setSoTimeout(sotimeout); //2HttpMethodBase baseMethod = null;try {  HttpClient client = new HttpClient(connManag);  client.getParams().setParameter("http.connection-manager.timeout", poolTimeout); //3  baseMethod = new GetMethod(…);  int statusCode = client.executeMethod(…);  …}catch (ConnectTimeoutException cte ){  //Took too long to connect to remote host}catch (SocketTimeoutException ste){  //Remote host didn’t respond in time}catch (Exception se){  //Some other error occurred}finally {  if (baseMethod != null)    baseMethod.releaseConnection();}

1. setConnectionTimeout -如果它确定在建立连接之前的超时。

2. setSoTimeout -如果确定两个连续数据包之间的不活动时间段或时间差，

那么下面的一个是做什么的：

3. "http.connection-manager.timeout"

答案1

最低级别的HTTP是TCP套接字。因此，当您请求URL并获得响应时，在较低级别上，将创建一个客户端套接字，该客户端套接字建立与远程服务器套接字的连接，发送一些数据并接收响应。

• setConnectionTimeout ：客户端尝试连接到服务器。这表示在建立连接或服务器响应连接请求之前经过的时间。

• setSoTimeout ：建立连接后，客户端套接字在发送请求后等待响应。这是从服务器向服务器发送请求到服务器响应到服务器响应所经过的时间。请注意，这不同于HTTP Error 408服务器发送给客户端的信息。换句话说，建立连接后到达客户端的两个连续数据包之间的 最大周期不活动 。

• http.connection-manager.timeout ：MultiThreadedHttpConnectionManager使用 HTTP连接池 。它为每个主机设置了最大值和最小值。如果特定主机的所有连接都达到最大值，则同一主机对新连接的请求将必须等待，直到现有连接中的任何一个变为空闲为止。此参数表示发出连接请求时和HttpConnectionManager返回连接之前所经过的时间。

Apache PoolingHttpClientConnectionManager引发非法状态异常

这是我的用法-

private static final PoolingHttpClientConnectionManager connPool;static {        connPool = new PoolingHttpClientConnectionManager();        // Increase max total connection to 200        connPool.setMaxTotal(200);//configurable through app.properties        // Increase default max connection per route to 50        connPool.setDefaultMaxPerRoute(20);//configurable through app.properties}CloseableHttpClient httpClient = HttpClients.custom()                .setConnectionManager(connPool) .build();

另外，我在http GET周围放置了一个finally块-

finally {            try {                httpClient.close();            } catch (IOException e) {                LOGGER.error(e.getMessage());               }        }

这是我的堆栈跟踪-

java.lang.IllegalStateException: Connection pool shut down    at org.apache.http.util.Asserts.check(Asserts.java:34)    at org.apache.http.pool.AbstractConnPool.lease(AbstractConnPool.java:169)    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.requestConnection(PoolingHttpClientConnectionManager.java:217)    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:157)    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:194)    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:85)    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186)    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)    at com.A.B.C.CustomHttpClient.doGETAndValidate(CustomHttpClient.java:44)    at com.A.B.C.SiteMonitorTask.monitorAndUpdateEndPoints(SiteMonitorTask.java:48)    at com.A.B.C.SiteMonitorTask.run(SiteMonitorTask.java:37)    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)    at java.lang.Thread.run(Thread.java:744)

我正在使用Quartz计划监视Http端点的工作。这是我的连接池配置

totalMaxHttpConn=200maxHttpConnPerRoute=20

Maven依赖..工件版本

httpclient 4.3.1httpcore 4.3.1

编辑 -好吧，通过不关闭finally块中的CloseableHttpClient，问题解决了。有人能说出为什么这样吗？
如果关闭客户端，为什么连接池会关闭？

是上面的closeablehttpclient是池的句柄，而不是单个conn

答案1

此行为是由于HC 4.3中的错误所致。它已在HC
4.4a1中修复。从4.4版本开始，CloseableHttpClient#close仅在客户端独占时才应自动关闭连接池

今天关于httpClient.getConnectionManager和已被弃用 – 应该使用什么？的介绍到此结束，谢谢您的阅读，有关.conn.ManagedClientConnectionImpl@604ed9f0 java.net.ConnectException: Connection refused: connect、Android 网络提交数据 (HttpConnection HttpClient) POST GET 方式、apache HttpClient API中的setConnectionTimeout，setSoTimeout和“ http.connection- manager.timeout”之间有什么区别、Apache PoolingHttpClientConnectionManager引发非法状态异常等更多相关知识的信息可以在本站进行查询。