Java HttpClient连接被对等方重置：套接字写入错误

我使用httpclient 4.4发送get和post请求。我刚刚创建了一个简单易用的httpclient simpile包装器：

package com.u8.server.sdk; import com.sun.net.httpserver.Headers; import com.u8.server.log.Log; import org.apache.http.Header; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.HttpRequestRetryHandler; import org.apache.http.client.ResponseHandler; import org.apache.http.client.config.RequestConfig; 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.config.Registry; import org.apache.http.config.RegistryBuilder; import org.apache.http.conn.socket.ConnectionSocketFactory; import org.apache.http.conn.socket.PlainConnectionSocketFactory; import org.apache.http.conn.ssl.NoopHostnameVerifier; import org.apache.http.conn.ssl.SSLConnectionSocketFactory; import org.apache.http.conn.ssl.TrustStrategy; import org.apache.http.entity.ByteArrayEntity; import org.apache.http.impl.client.BasicCookieStore; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClientBuilder; import org.apache.http.impl.client.HttpClients; import org.apache.http.impl.conn.PoolingHttpClientConnectionManager; import org.apache.http.impl.cookie.BasicClientCookie; import org.apache.http.message.BasicHeader; import org.apache.http.message.BasicNameValuePair; import org.apache.http.protocol.HttpContext; import org.apache.http.ssl.SSLContextBuilder; import org.apache.http.util.EntityUtils; import org.springframework.util.StringUtils; import javax.net.ssl.HostnameVerifier; import javax.net.ssl.SSLContext; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.net.CookiePolicy; import java.net.URLEncoder; import java.nio.charset.Charset; import java.security.cert.CertificateException; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.Iterator; import java.util.List; import java.util.Map; /** * Created by ant on 2015/10/12. */ public class UHttpAgent { private int connectTimeout = 5000; //5s private int socketTimeout = 5000; //5s private int maxTotalConnections = 200; private static UHttpAgent instance; private CloseableHttpClient httpClient; private UHttpAgent(){ } public static UHttpAgent getInstance(){ if(instance == null){ instance = new UHttpAgent(); } return instance; } public static UHttpAgent newInstance(){ return new UHttpAgent(); } public String get(String url, Map params){ return get(url, null, params, "UTF-8"); } public String post(String url, Map params){ return post(url, null, params, "UTF-8"); } public String get(String url , Map headers, Map params, String encoding){ if(this.httpClient == null){ init(); } String fullUrl = url; String urlParams = parseGetParams(params, encoding); if (urlParams != null) { if (url.contains("?")) { fullUrl = url + "&" + urlParams; } else { fullUrl = url + "?" + urlParams; } } Log.d("the full url is "+ fullUrl); HttpGet getReq = new HttpGet(fullUrl.trim()); getReq.setHeaders(parseHeaders(headers)); ResponseHandler responseHandler = new ResponseHandler() { @Override public String handleResponse(HttpResponse httpResponse) throws IOException { HttpEntity entity = httpResponse.getEntity(); return entity != null ? EntityUtils.toString(entity) : null; } }; try { String res = httpClient.execute(getReq, responseHandler); return res; } catch (Exception e) { e.printStackTrace(); }finally { getReq.releaseConnection(); } return null; } public String post(String url, Map headers, Map params, String encoding){ List pairs = new ArrayList(); if(params != null){ for(String key : params.keySet()){ pairs.add(new BasicNameValuePair(key, params.get(key))); } } return post(url, headers, new UrlEncodedFormEntity(pairs, Charset.forName(encoding))); } public String post(String url, Map headers, HttpEntity entity){ if(this.httpClient == null) { init(); } HttpPost httpPost = new HttpPost(url); httpPost.setHeaders(parseHeaders(headers)); httpPost.setEntity(entity); ResponseHandler responseHandler = new ResponseHandler() { @Override public String handleResponse(HttpResponse httpResponse) throws IOException { HttpEntity entity = httpResponse.getEntity(); return entity != null ? EntityUtils.toString(entity) : null; } }; try { String body = httpClient.execute(httpPost, responseHandler); return body; } catch (IOException e) { e.printStackTrace(); }finally { httpPost.releaseConnection(); } return null; } private Header[] parseHeaders(Map headers){ if(null == headers || headers.isEmpty()){ return getDefaultHeaders(); } Header[] hs = new BasicHeader[headers.size()]; int i = 0; for(String key : headers.keySet()){ hs[i] = new BasicHeader(key, headers.get(key)); i++; } return hs; } private Header[] getDefaultHeaders(){ Header[] hs = new BasicHeader[2]; hs[0] = new BasicHeader("Content-Type", "application/x-www-form-urlencoded"); hs[1] = new BasicHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.146 Safari/537.36"); return hs; } private String parseGetParams(Map data, String encoding){ if(data == null || data.size() keyItor = data.keySet().iterator(); while(keyItor.hasNext()){ String key = keyItor.next(); String val = data.get(key); try { result.append(key).append("=").append(URLEncoder.encode(val, encoding).replace("+", "%2B")).append("&"); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } return result.deleteCharAt(result.length() - 1).toString(); } private void init(){ RequestConfig requestConfig = RequestConfig.custom() .setConnectTimeout(connectTimeout) .setSocketTimeout(socketTimeout) .setExpectContinueEnabled(true) .setAuthenticationEnabled(true) .build(); HttpRequestRetryHandler retryHandler = new HttpRequestRetryHandler() { @Override public boolean retryRequest(IOException e, int retryNum, HttpContext httpContext) { if(retryNum >= 3){ return false; } if(e instanceof org.apache.http.NoHttpResponseException || e instanceof org.apache.http.client.ClientProtocolException || e instanceof java.net.SocketException){ return true; } return false; } }; try{ SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() { @Override public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException { return true; } }).build(); HostnameVerifier hostnameVerifier = NoopHostnameVerifier.INSTANCE; SSLConnectionSocketFactory sslFactory = new SSLConnectionSocketFactory(sslContext, hostnameVerifier); Registry socketFactoryRegistry = RegistryBuilder.create() .register("http", PlainConnectionSocketFactory.getSocketFactory()) .register("https", sslFactory) .build(); PoolingHttpClientConnectionManager connMgr = new PoolingHttpClientConnectionManager( socketFactoryRegistry); connMgr.setMaxTotal(maxTotalConnections); connMgr.setDefaultMaxPerRoute((connMgr.getMaxTotal())); HttpClientBuilder builder = HttpClients.custom() .setDefaultRequestConfig(requestConfig) .setSslcontext(sslContext) .setConnectionManager(connMgr) .setRetryHandler(retryHandler); this.httpClient = builder.build(); }catch (Exception e){ e.printStackTrace(); } } public HttpClient getHttpClient(){ return this.httpClient; } public void destroy(){ if(this.httpClient != null){ try{ this.httpClient.close(); this.httpClient = null; }catch (Exception e){ e.printStackTrace(); } } } } 包com.u8.server.sdk； 导入com.sun.net.httpserver.Headers； 导入com.u8.server.log.log； 导入org.apache.http.Header； 导入org.apache.http.HttpEntity； 导入org.apache.http.HttpResponse； 导入org.apache.http.NameValuePair； 导入org.apache.http.client.ClientProtocolException； 导入org.apache.http.client.HttpClient； 导入org.apache.http.client.HttpRequestRetryHandler； 导入org.apache.http.client.ResponseHandler； 导入org.apache.http.client.config.RequestConfig； 导入org.apache.http.client.entity.UrlEncodedFormEntity； 导入org.apache.http.client.methods.HttpGet； 导入org.apache.http.client.methods.HttpPost； 导入org.apache.http.config.Registry； 导入org.apache.http.config.RegistryBuilder； 导入org.apache.http.conn.socket.ConnectionSocketFactory； 导入org.apache.http.conn.socket.PlainConnectionSocketFactory； 导入org.apache.http.conn.ssl.NoopHostnameVerifier； 导入org.apache.http.conn.ssl.SSLConnectionSocketFactory； 导入org.apache.http.conn.ssl.TrustStrategy； 导入org.apache.http.entity.ByteArrayEntity； 导入org.apache.http.impl.client.BasicCookieStore； 导入org.apache.http.impl.client.CloseableHttpClient； 导入org.apache.http.impl.client.HttpClientBuilder； 导入org.apache.http.impl.client.HttpClients； 导入org.apache.http.impl.conn.poolighttpclientconnectionmanager； 导入org.apache.http.impl.cookie.BasicClientCookie； 导入org.apache.http.message.BasicHeader； 导入org.apache.http.message.BasicNameValuePair； 导入org.apache.http.protocol.HttpContext； 导入org.apache.http.ssl.SSLContextBuilder； 导入org.apache.http.util.EntityUtils； 导入org.springframework.util.StringUtils； 导入javax.net.ssl.HostnameVerifier； 导入javax.net.ssl.SSLContext； 导入java.io.IOException； 导入java.io.UnsupportedEncodingException； 导入java.net.CookiePolicy； 导入java.net.urlcoder； 导入java.nio.charset.charset； 导入java.security.cert.CertificateException； 导入java.security.cert.x509证书； 导入java.util.ArrayList； 导入java.util.Iterator； 导入java.util.List； 导入java.util.Map； /** *由ant于2015年10月12日创建。 */ 公共类网页{ private int connectTimeout=5000；//5s private int socketTimeout=5000；//5s 私有int maxTotalConnections=200； 私有静态页面实例； 私有可关闭httpClient httpClient； 私人网页{ } 公共静态UHttpAgent getInstance（）{ if（实例==null）{ 实例=新的UHttpAgent（）； } 返回实例； } 公共静态UHttpAgent newInstance（）{ 返回新的UHttpAgent（）； } 公共字符串获取（字符串url、映射参数）{ 返回get（url，null，参数，“UTF-8”）； } 公共字符串post（字符串url、映射参数）{ 返回帖子（url，null，参数，“UTF-8”）； } 公共字符串获取（字符串url、映射头、映射参数、字符串编码）{ if（this.httpClient==null）{ init（）； } 字符串fullUrl=url； 字符串urlParams=parseGetParams（参数，编码）； if（urlParams！=null） { if（url.contains（“？”） { fullUrl=url+“&”+urlparms； } 其他的 { fullUrl=url+“？”+urlparms； } } Log.d（“完整url为”+fullUrl）； HttpGet getReq=newhttpget（fullUrl.trim（））； getReq.setHeaders（parseHeaders（headers））； ResponseHandler ResponseHandler=新ResponseHandler（）{ @凌驾 公共字符串HandlerResponse（HttpResponse HttpResponse）引发IOException{ HttpEntity entity=httpResponse.getEntity（）； 返回实体！=null？EntityUtils.toString（实体）：null； } }; 试一试{ String res=httpClient.execute（getReq，responseHandler）； 返回res； }捕获（例外e）{ e、 printStackTrace（）； }最后{ getReq.releaseConnection（）； } 返回null； } 公共字符串post（字符串url、映射头、映射参数、字符串编码）{ 列表对=新的ArrayList（）； 如果（参数！=null）{ for（字符串键：params.keySet（））{ 添加（新的BasicNameValuePair（key，params.get（key））； } } 返回帖子（url、标题、新的UrlEncodedFormEntity（pairs、Charset.forName（encoding））； } 公共字符串post（字符串url、映射头、HttpEntity）{ if（this.httpClient==null）{ init（）； } HttpPost HttpPost=新的HttpPost（url）； setHeaders（parseHeaders（headers））； httpPost.setEntity（实体）； ResponseHandler ResponseHandler=新ResponseHandler（）{ @凌驾 公共字符串HandlerResponse（HttpResponse HttpResponse）引发IOException{ HttpEntity entity=httpResponse.getEntity（）； 返回实体！=null？EntityUtils.toString（实体）：null； } }; 试一试{ String body=httpClient.execute（httpPost，responseHandler）； 返回体； }捕获（IOE异常）{ java.net.SocketException: Connection reset by peer: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(SocketOutputStream.java:92) at java.net.SocketOutputStream.write(SocketOutputStream.java:136) at org.apache.http.impl.conn.LoggingOutputStream.write(LoggingOutputStream.java:77) at org.apache.http.impl.io.SessionOutputBufferImpl.streamWrite(SessionOutputBufferImpl.java:126) at org.apache.http.impl.io.SessionOutputBufferImpl.flushBuffer(SessionOutputBufferImpl.java:138) at org.apache.http.impl.io.SessionOutputBufferImpl.flush(SessionOutputBufferImpl.java:146) at org.apache.http.impl.BHttpConnectionBase.doFlush(BHttpConnectionBase.java:175) at org.apache.http.impl.DefaultBHttpClientConnection.flush(DefaultBHttpClientConnection.java:185) at org.apache.http.impl.conn.CPoolProxy.flush(CPoolProxy.java:177) at org.apache.http.protocol.HttpRequestExecutor.doSendRequest(HttpRequestExecutor.java:215) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:122) at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:271) at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:184) at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:88) at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:71) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:220) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:164) at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:139) at com.u8.server.sdk.UHttpAgent.post(UHttpAgent.java:259) at com.u8.server.sdk.UHttpAgent.post(UHttpAgent.java:147) at com.u8.server.sdk.baidu.BaiduSDK.verify(BaiduSDK.java:30) at com.u8.server.web.UserAction.getLoginToken(UserAction.java:100) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597)