获取表单数据:jsp源码实例2(获取表单参数）来源: 发布时间:星期三, 2008年9月10日 浏览:158次 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. *<P> *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) + "<BODY BGCOLOR=\\"#FDF5E6\\">\\n" + "<H1 ALIGN=CENTER>" + title + "</H1>\\n" + "<TABLE BORDER=1 ALIGN=CENTER>\\n" + "<TR BGCOLOR=\\"#FFAD00\\">\\n" + "<TH>Parameter Name<TH>Parameter Value(s)"); Enumeration paramNames = request.getParameterNames(); while(paramNames.hasMoreElements()) { String paramName = (String)paramNames.nextElement(); out.print("<TR><TD>" + paramName + "\\n<TD>"); 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; i<paramValues.length; i++) { out.println("<LI>" + paramValues[i]); } out.println("</UL>"); } } out.println("</TABLE>\\n</BODY></HTML>"); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request, response); } } 0
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