HttpServlet方法如下：
JAVA代码如下：
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package shark.zd.servlets;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.Response;
import org.omg.CORBA.Request;
import com.sun.jmx.snmp.Enumerated;
public class TestHttpServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
{
execute(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
{
execute(request, response);
}
public void execute(HttpServletRequest request,
HttpServletResponse response){
//容器：装载信息object
/*
* Enumerationg有几个方法
* 1,判断内部有没有任务.hasMoreElements
* 2,获得下一个信息.nextElement
*/
Enumeration headers = request.getHeaderNames();
PrintWriter pw;
try {
pw = response.getWriter();
pw.print("");
pw.print("");
pw.print("");
pw.print("头信息名");
pw.print(" | ");
pw.print("");
pw.print("头信息值");
pw.print(" | ");
pw.print(" ");
while(headers.hasMoreElements()){
Object obj = headers.nextElement();
String headName = String.valueOf(obj);
String headValue = request.getHeader(headName);
pw.print("");
pw.print("");
pw.print(headName);
pw.print(" | ");
pw.print("");
pw.print(headValue);
pw.print("/td");
pw.print(" | ");
}
pw.print(" ");
pw.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
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HTML代码如下：
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>test.html</title>
</head>
<body>
<form action="wlecome" method="get">
请输入你的名字：<input type="text" name="username" /></br>
<input type="radio" name="testRadio" value="man">男</br>
<input type="radio" name="testRadio" value="woman">女</br>
<select name="sw">
<option value="s">s</option>
<option value="w">w</option>
</select>
<input type="checkbox" name="c1" value="c1">
<input type="checkbox" name="c2" value="c2">
<input type="checkbox" name="c3" value="c3">
<input type="checkbox" name="c4" value="c4">
<input type="submit" value="提交" />
</form>
<a href="testMethod">超链接方法</a>>
</body>
</html>
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web.xml代码如下：
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<!-- servlet的名字和本个Servlet需要访问java类文件全地址 -->
<servlet>
<servlet-name>testMethodServlet</servlet-name>
<servlet-class>shark.zd.servlets.TestHttpServlet</servlet-class>
</servlet>
<!-- 寻找外部访问url的Servletname -->
<servlet-mapping>
<servlet-name>testMethodServlet</servlet-name>
<!-- 允许外部访问的url -->
<url-pattern>/testMethod</url-pattern>
</servlet-mapping>
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实验结果：得到访问网页的各个信息
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