📄 servletfirst.java~15~
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package example;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
/**
* <p>Title: </p>
*
* <p>Description: </p>
*
* <p>Copyright: Copyright (c) 2008</p>
*
* <p>Company: </p>
*
* @author not attributable
* @version 1.0
*/
public class ServletFirst extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";
//Initialize global variables
public void init() throws ServletException {
}
//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE); //响应的格式
response.setCharacterEncoding("GB2312") ;//响应的字符编码（汉字）
PrintWriter out = response.getWriter(); //生成一个PrintWriter对象
// try
// {
String un = request.getParameter("username") ;//获得文本框内的字符串
if (un.equals(""))
{
out.println("<html>");
out.println("<head><title>登陆系统</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
out.println(
"<form method = post action=/ServletModule11111111/servletfirst");
out.println("<br/>");
out.println("用户名：<input type='text' name='username'><br/>");
out.println("<input type = submit value = '提交'><br/>");
out.println("</form>");
out.println("</body>");
out.println("</html>");
}
else
{
out.println("<b>" + un + "</b>欢迎你使用servlet<br/>");
}
}
catch(Exception e)
{
out.println("<html>");
out.println("<head><title>登陆系统</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
out.println(
"<form method = post action=/ServletModule11111111/servletfirst");
out.println("<br/>");
out.println("用户名：<input type='text' name='username'><br/>");
out.println("<input type = submit value = '提交'><br/>");
out.println("</form>");
out.println("</body>");
out.println("</html>");
out.println("出现异常");
}
out.close();
}
//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}
//Clean up resources
public void destroy() {
}
}
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