[原创]给你一个SERVLET保治百病_Java Web开发

[原创]给你一个SERVLET保治百病

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.util.*;

public class ShowAllFormData extends HttpServlet {
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String title = "显示所有的Form变量的值";
out.println("<HTML><HEAD><TITLE>"+title+"</TITLE></HEAD>"+
"<BODY BGCOLOR=\"#FDF5E6\">\n" +
"<H1 ALIGN=CENTER>" + title + "</H1>\n" +
"<TABLE BORDER=1 ALIGN=CENTER>\n" +
"<TR BGCOLOR=\"#FFAD00\">\n" +
"<TH>变量名称<TH>变量值");
Enumeration paramNames = request.getParameterNames();
while(paramNames.hasMoreElements()) {
String paramName = (String)paramNames.nextElement();
out.println("<TR><TD>" + paramName + "\n<TD>");
String[] paramValues = request.getParameterValues(paramName);
if (paramValues.length == 1) {
String paramValue = paramValues[0];
if (paramValue.length() == 0)
out.print("<I>No Value</I>");
else
out.print(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);
}
}

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----------------解决方案--------------------------------------------------------
这个servlet有什么用？能具体说说看么？
----------------解决方案--------------------------------------------------------

做广告

----------------解决方案--------------------------------------------------------
晕！实在是没看明白能干什么！哪位给讲一讲
？？？

----------------解决方案--------------------------------------------------------
不错，输出所提交的表单的所有元素while(paramNames.hasMoreElements()) {
----------------解决方案--------------------------------------------------------