📄 htmlform.java
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import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HTMLForm extends HttpServlet {
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws IOException, ServletException {
res.setContentType("text/html;charset=GB2312");
PrintWriter out = new PrintWriter(res.getOutputStream());
out.println("<html><body>");
out.println("<H1><CENTER>你填写的信息已经被成功地处理!");
out.println("</CENTER></H1><HR><BR>");
out.println("你填写的信息如下:");
out.println("<dir>");
String name=req.getParameter("name");
String nameGb=Gb2312ToUnicode(name);
out.println("姓名："+nameGb+"<BR>");
String email=req.getParameter("email");
String emailGb=Gb2312ToUnicode(email);
out.println("电子邮件："+emailGb+"<BR>");
String values[]=req.getParameterValues("os");
out.print("操作系统：");
if(values!=null) {
for(int i=0;i<values.length;i++) {
if(i>0) out.print("，");
out.print(values[i]);
}
}
out.println("<BR>");
String more=req.getParameter("more");
out.println("如果你知道更多的信息："+more+"<BR>");
String comments=req.getParameter("comments");
String commentsGb=Gb2312ToUnicode(comments);
out.println("你所了解的Java Servlet：<BR>");
out.println("<dir>");
out.println(commentsGb);
out.println("<dir>");
out.println("<dir>");
out.println("</BODY>");
out.println("<HTML>");
out.flush();
}
public static String Gb2312ToUnicode(String s) throws IOException {
byte ba[]=new byte[s.length()];
for(int i=0;i<s.length();i++)
ba[i]=(byte)s.charAt(i);
return new String(ba,"GB2312");
}
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