eclipse Java EE程序问题
新建了两个Servlet程序
（1）loginPage：
package myPackage;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* Servlet implementation class loginPage
*/
@WebServlet("/loginPage")
public class loginPage extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public loginPage() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
Cookie [] cookies=request.getCookies();
String username="",password="";
if(cookies!=null) {
for(int i=0;i<cookies.length;i++) {
if("username".equals(cookies[i].getName())) {
username=cookies[i].getValue();
}else if("password".equals(cookies[i].getName())) {
password=cookies[i].getValue();
}
}
}
response.setContentType("text/html;chrset=utf-8");
response.getWriter().println("<!DOCTYPE html>\r\n"
+ "<html lang=\"zh-CN\">\r\n"
+ "<head>\r\n"
+ " <meta charset=\"utf-8\">\r\n"
+ " <title>登录页面</title>\r\n"
+ " <link rel=\"stylesheet\" href=\"styles.css\">\r\n"
+ "</head>\r\n"
+ "\r\n"
+ "<body>\r\n"
+ "\r\n"
+ " <div class=\"login-container\">\r\n"
+ " \r\n"
+ " <h1>系统登录</h1>\r\n"
+ " \r\n"
+ " <form action=\"logResponse\" method=\"post\" id=\"loginForm\">\r\n"
+ " <div class=\"input-group\">\r\n"
+ " <label for=\"username\">用户名:</label>\r\n"
+ " <input type=\"text\" id=\"username\" name=\"username\" placeholder=\"请输入用户名\">\r\n"
+ " </div> \r\n"
+ " \r\n"
+ " <div class=\"input-message\">\r\n"
+ " <span id=\"usernameMessage\" class=\"message\"></span>\r\n"
+ " </div>\r\n"
+ " \r\n"
+ " <div class=\"input-group\">\r\n"
+ " <label for=\"password\">密码:</label>\r\n"
+ " <input type=\"password\" id=\"password\" name=\"password\" placeholder=\"请输入密码\">\r\n"
+ " </div>\r\n"
+ " \r\n"
+ " <button type=\"submit\" id=\"loginButton\">登录</button>\r\n"
+ " </form>\r\n"
+ " \r\n"
+ " </div>\r\n"
+ " \r\n"
+ " <script src=\"script.js\"></script>\r\n"
+ " \r\n"
+ "</body>\r\n"
+ "\r\n"
+ "</html>\r\n"
+ "");
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String username = request.getParameter("username");
String password = request.getParameter("password");
// 这里可以添加验证逻辑，比如查询数据库等
// 设置Cookie
Cookie usernameCookie = new Cookie("username", username);
Cookie passwordCookie = new Cookie("password", password);
usernameCookie.setMaxAge(30 * 24 * 60 * 60); // 30天
passwordCookie.setMaxAge(30 * 24 * 60 * 60); // 30天 response.addCookie(usernameCookie);
response.addCookie(passwordCookie);
// 重定向到主页或其他页面
response.sendRedirect("logResponse"); // 假设你有一个主页Servlet
}
}
（2）logResponse.java
package myPackage;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.PrintWriter;
/**
* Servlet implementation class logResponse
*/
@WebServlet("/logResponse")
public class logResponse extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public logResponse() {
super();
// TODO Auto-generated constructor stub
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
request.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
//processRequest(request,response);
String uname = request.getParameter("username");
String password = request.getParameter("password"); // 获取密码
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.println("<p>用户名: " + uname + "</p>");
out.println("<p>密码: " + password + "</p>"); // 显示密码
}
}
为什么运行login.java出现404报错页面如下
