?? servletfirst.java~20~
字號:
package example;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
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); //響應的格式
response.setCharacterEncoding("GB2312") ;//響應的字符編碼（漢字）
PrintWriter out = response.getWriter(); //生成一個PrintWriter對象
try
{
String un = request.getParameter("username") ;//獲得文本框內的字符串
if (un.equals(""))
{
out.println("<html>");
out.println("<head><title>登陸系統</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
out.println(
"<form method = post action=/ServletModule11111111/servletfirst");
out.println("<br/>");
out.println("用戶名：<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>歡迎你使用servlet<br/>");
}
}
catch(Exception e)
{
out.println("<html>");
out.println("<head><title>登陸系統</title></head>");
out.println("<body bgcolor=\"#ffffff\">");
out.println("<form method = post action=/ServletModule11111111/servletfirst");
out.println("<br/>");
out.println("用戶名：<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.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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