HttpClient4 Post XML到一个服务器上

renxiao2003 发表于 2011-12-21 08:44

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<DIV>HttpClient4 Post XML到一个服务器上</DIV>
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<DIV>现在网上介绍的HttpClient基本上全是3.x版本的内容，HttpClient4的API变化相对3已经变化很大，对HttpClient4做了简单的研究后，完成了一个HttpClient4 Post XML功能。</DIV>
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<DIV>对于POST方式，最先想到的就是表单提交了，POST XML自然想到的就是定义一个变量名，比如叫xmldata，然后将这个参数的值POST出去，在服务端接收的时候，自然也是通过 requset.getParameter("xmldata")方式来接收。</DIV>
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<DIV>现在我在这里要做的不是通过上面的方式，而是不指定参数名来Post，实际上就是将一个流写入请求。</DIV>
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<DIV>下面是具体的实现方式：</DIV>
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<DIV>1、参数名方式POST XML数据</DIV>
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<DIV style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; LINE-HEIGHT: 16px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 4px; FONT-FAMILY: verdana, 宋体; COLOR: #000000; FONT-SIZE: 10pt; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px">import org.apache.http.*; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.client.*; import java.io.IOException; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.util.*; /** * 通过指定参数名的方式POST XML * * @author leizhimin 2010-7-8 22:29:28 */ public class TestPost {         public static void main(String[] args) throws IOException {                 HttpClient httpclient = new DefaultHttpClient();                 HttpPost httppost = new HttpPost("http://localhost:8080/waitsrv/GenXmlServlet");                 List<NameValuePair> formparams = new ArrayList<NameValuePair>();                 formparams.add(new BasicNameValuePair("xmldate", "<html>你好啊啊</html>"));                 formparams.add(new BasicNameValuePair("info", "xxxxxxxxx"));                 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, "GBK"); //                entity.setContentType("text/xml; charset=GBK");                 httppost.setEntity(entity);                 HttpResponse response = httpclient.execute(httppost);                 HttpEntity resEntity = response.getEntity();                 InputStreamReader reader = new InputStreamReader(resEntity.getContent(), "ISO-8859-1");                 char[] buff = new char;                 int length = 0;                 while ((length = reader.read(buff)) != -1) {                         System.out.println(new String(buff, 0, length));                         httpclient.getConnectionManager().shutdown();                 }         } }</DIV></DIV>
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<DIV>2、不指定参数名的方式来POST数据</DIV>
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<DIV style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; LINE-HEIGHT: 16px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 4px; FONT-FAMILY: verdana, 宋体; COLOR: #000000; FONT-SIZE: 10pt; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px">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.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; import org.apache.http.entity.*; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; /** * 不指定参数名的方式来POST数据 * * @author leizhimin 2010-7-8 3:22:53 */ public class TestPostXml {         public static void main(String[] args) throws IOException {                 HttpClient httpclient = new DefaultHttpClient();                 HttpPost httppost = new HttpPost("http://localhost:8080/waitsrv/GenXmlServlet");                 StringEntity myEntity = new StringEntity("<html>你好啊啊</html>", "GBK");                 httppost.addHeader("Content-Type", "text/xml");                 httppost.setEntity(myEntity);                 HttpResponse response = httpclient.execute(httppost);                 HttpEntity resEntity = response.getEntity();                 InputStreamReader reader = new InputStreamReader(resEntity.getContent(), "ISO-8859-1");                 char[] buff = new char;                 int length = 0;                 while ((length = reader.read(buff)) != -1) {                         System.out.println(new String(buff, 0, length));                 }                 httpclient.getConnectionManager().shutdown();         } }</DIV></DIV>
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<DIV>服务端接收方式：</DIV>
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<DIV style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; LINE-HEIGHT: 16px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 4px; FONT-FAMILY: verdana, 宋体; COLOR: #000000; FONT-SIZE: 10pt; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px">package com; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; /** * 接收XLM请求 * * @author leizhimin 2010-7-8 1:02:42 */ public class GenXmlServlet extends HttpServlet {         protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //                String xml = req.getParameter("xmldata");                 resp.setContentType("text/xml");                 resp.setCharacterEncoding("GBK");                 PrintWriter out = resp.getWriter(); //                out.println(xml); //                System.out.println(xml);                 System.out.println("----------------------");                 InputStreamReader reader = new InputStreamReader(req.getInputStream(), "GBK");                 char[] buff = new char;                 int length = 0;                 while ((length = reader.read(buff)) != -1) {                         String x = new String(buff, 0, length);                         System.out.println(x);                         out.print(x);                 }         }         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {                 resp.setContentType("text/html");                 PrintWriter out = resp.getWriter();                 out.println("<html>");                 out.println("<head>");                 out.println("<title>Hello World!</title>");                 out.println("</head>");                 out.println("<body>");                 out.println("<h1>Hello World!！</h1>");                 out.println("</body>");                 out.println("</html>");         } }</DIV></DIV>
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<DIV>web.xml</DIV>
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<DIV style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; LINE-HEIGHT: 16px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 4px; FONT-FAMILY: verdana, 宋体; COLOR: #000000; FONT-SIZE: 10pt; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px"><?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee"                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"                  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee         http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"                  version="2.5">         <servlet>                 <servlet-name>GenXmlServlet</servlet-name>                 <servlet-class>com.GenXmlServlet</servlet-class>         </servlet>         <servlet-mapping>                 <servlet-name>GenXmlServlet</servlet-name>                 <url-pattern>/GenXmlServlet</url-pattern>         </servlet-mapping> </web-app></DIV></DIV>
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<DIV>3、在2的基础，上改为单线程重用连接模式</DIV>
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<DIV style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; LINE-HEIGHT: 16px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 4px; FONT-FAMILY: verdana, 宋体; COLOR: #000000; FONT-SIZE: 10pt; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px">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.HttpPost; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.impl.conn.SingleClientConnManager; import org.apache.http.message.BasicNameValuePair; import org.apache.http.entity.*; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; /** * 不指定参数名的方式来POST数据,单线程重用连接模式 * * @author leizhimin 2010-7-8 3:22:53 */ public class TestPostXml2 {         public static void main(String[] args) throws IOException {                 SingleClientConnManager sccm =new SingleClientConnManager();                 HttpClient httpclient = new DefaultHttpClient(sccm); //                HttpGet httpget = new HttpGet(urisToGet); //                HttpClient httpclient = new DefaultHttpClient();                 HttpPost httppost = new HttpPost("http://localhost:8080/waitsrv/GenXmlServlet");                 StringEntity myEntity = new StringEntity("<html>你好啊啊</html>", "GBK");                 httppost.addHeader("Content-Type", "text/xml");                 httppost.setEntity(myEntity);                 HttpResponse response = httpclient.execute(httppost);                 HttpEntity resEntity = response.getEntity();                 InputStreamReader reader = new InputStreamReader(resEntity.getContent(), "ISO-8859-1");                 char[] buff = new char;                 int length = 0;                 while ((length = reader.read(buff)) != -1) {                         System.out.println(new String(buff, 0, length));                 }                 httpclient.getConnectionManager().shutdown();         } }</DIV></DIV></DIV>
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HttpClient4 Post XML到一个服务器上