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jsp源码实例2（获取表单参数） 时间：2004/11/7 3:38:00来源：本站整理作者：蓝点我要评论(0)

package coreservlets;

import java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;

import java.util.*;

/** Shows all the parameters sent to the servlet via either

* GET or POST. Specially marks parameters that have

* no values or multiple values.

*

* Taken from Core Servlets and JavaServer Pages

* from Prentice Hall and Sun Microsystems Press,

* http://www.coreservlets.com/.

* © 2000 Marty Hall; may be freely used or adapted.

*/

public class ShowParameters extends HttpServlet {

public void doGet(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html");

PrintWriter out = response.getWriter();

String title = "Reading All Request Parameters";

out.println(ServletUtilities.headWithTitle(title) +

"\n" +

"

" + title + "

\n" +

"\n" +

"\n" +

"

Parameter Name	Parameter Value(s)"); Enumeration paramNames = request.getParameterNames(); while(paramNames.hasMoreElements()) { String paramName = (String)paramNames.nextElement(); out.print("
" + paramName + "\n	"); String[] paramValues = request.getParameterValues(paramName); if (paramValues.length == 1) { String paramValue = paramValues[0]; if (paramValue.length() == 0) out.println("No Value"); else out.println(paramValue); } else { out.println(" "); for(int i=0; i out.println(" " + paramValues); } out.println(" "); } } out.println("

\n");

}

public void doPost(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

doGet(request, response);

}

}

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