jsp源码实例2（获取表单参数）
导读：收集整理的这篇文章主要介绍了jsp源码实例2（获取表单参数），觉得挺不错的，现在分享给大家，也给大家做个参考。 package coreservlets;import java.io.*...
收集整理的这篇文章主要介绍了jsp源码实例2（获取表单参数），觉得挺不错的，现在分享给大家，也给大家做个参考。 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.
* P>
* Taken From Core Servlets and JavaServer Pages
* from PRentice Hall and Sun MicroSystems Press,
* http://www.coreservlets.COM/.
* & copy; 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) +
"BODY BGCOLOR=\"#FDF5E6\"> \n" +
"h1 ALIGN=center> " + title + "/H1> \n" +
"TABLE BORDER=1 ALIGN=CENTER> \n" +
"TR BGCOLOR=\"#FFAD00\"> \n" +
"TH> Parameter NameTH> Parameter Value(s)");
Enumeration paramnames = request.getParameterNames();
while(paramNames.hasMoreElements()) {
String paramName = (String)paramNames.nextElement();
out.print("TR> TD> " + paramName + "\nTD> ");
String[] paramValues =
request.getParameterValues(paramName);
if (paramValues.length == 1) {
String paramValue = paramValues[0];
if (paramValue.length() == 0)
out.println("I> No Value/I> ");
else
out.println(paramValue);
} else {
out.println("UL> ");
for(int i=0; iparamValues.length; i++) {
out.println("LI> " + paramValues);
}
out.println("/UL> ");
}
}
out.println("/TABLE> \n/BODY> /HTML> ");
}
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}
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