httpClient如何接收格式错误的响应头部信息 使用 httpClient 从服务器端读取数据，出现异常 ： Caused by: org.apache.http.ProtocolException: The server failed to respond with a valid HTTP response 执行的代码如下：
Java code
public static String getResultByHttpGet() throws ClientProtocolException, IOException { String result = ""; String url="http://192.168.1.83/imonitorint.html?op=r&33032=0"; HttpGet httpGet = new HttpGet(url); //执行这行代码时出错 HttpResponse response = new DefaultHttpClient().execute(httpGet); if (response.getStatusLine().getStatusCode() == 200) { HttpEntity entity = response.getEntity(); result = EntityUtils.toString(entity, "GB2312"); } return result; }
全部的错误信息 ： org.apache.http.client.ClientProtocolException at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:822) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732) at com.osee.yws.httpAgreement.HttpAgreement.getResultByHttpGet(HttpAgreement.java:50) at com.osee.yws.bll.LCDOptionBll.readLcdOption(LCDOptionBll.java:104) at com.osee.yws.bll.LCDOptionBll.readInput(LCDOptionBll.java:73) at com.osee.yws.gui.SetDeviceOptionLCD$1.windowOpened(SetDeviceOptionLCD.java:74) at java.awt.AWTEventMulticaster.windowOpened(Unknown Source) at java.awt.AWTEventMulticaster.windowOpened(Unknown Source) at java.awt.Window.processWindowEvent(Unknown Source) at javax.swing.JDialog.processWindowEvent(Unknown Source) at java.awt.Window.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$000(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.awt.EventQueue$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$2.run(Unknown Source) at java.awt.EventQueue$2.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) Caused by: org.apache.http.ProtocolException: The server failed to respond with a valid HTTP response at org.apache.http.impl.conn.DefaultResponseParser.parseHead(DefaultResponseParser.java:109)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:252) at org.apache.http.impl.AbstractHttpClientConnection.receiveResponseHeader(AbstractHttpClientConnection.java:281) at org.apache.http.impl.conn.DefaultClientConnection.receiveResponseHeader(DefaultClientConnection.java:247) at org.apache.http.impl.conn.AbstractClientConnAdapter.receiveResponseHeader(AbstractClientConnAdapter.java:219) at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:298) at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125) at org.apache.http.impl.client.DefaultRequestDirector.tryExecute(DefaultRequestDirector.java:645) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:464) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820) ... 33 more
[解决办法] 以下是我的观点：
光屏蔽解析head的代码错误应该是没有用的。
对于内容的读取，返回head的内容至关重要。
httpclient组件获取返回内容，需要head里面的至少这几个项目 1) HTTP/1.1 200 OK 状态码
