📄 userlistservlet.java

📁 电信计费系统
💻 JAVA
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package com.allan.ums.view;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Collection;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import com.allan.ums.entity.Administrator;
import com.allan.ums.entity.User;

public class UserListServlet extends HttpServlet {

	/**
	 * 以表格的形式显示用户的信息，要求一个用户 占用表格一行，一个属性一列。
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html;charset=gbk");
		PrintWriter out = response.getWriter();
		out
				.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">");
		out.println("<html>");
		out.println("<head>");
		out.println("<title>用户列表</title>");
		out.println("</head>");
		out.println("<body>");
		out.println("<h3 align=\"center\">用户列表</h3>");
		out.println("<hr>");
		HttpSession session = request.getSession();
		Administrator admin = (Administrator) session.getAttribute("admin");
		out.println("欢迎您," + admin.getUsername());
		out
				.println("<table cellspacing=\"1\" cellpadding=\"1\" border=\"1\" width=\"500\" align=\"center\">");
		out.println("<tr>");
		out.println("<th>序号</th>");
		out.println("<th>用户名</th>");
		out.println("<th>性别</th>");
		out.println("<th>邮件</th>");
		out.println("<th>操作</th>");
		out.println("</tr>");
		Collection<User> users = (Collection<User>) request
				.getAttribute("users");
		int index = 1;
		for (User user : users) {
			out.println("<tr>");
			out.println("<td align=\"center\">" + index + "</td>");
			out
					.println("<td align=\"center\"><a href=\"/ums/user/load.action?id="
							+ user.getId()
							+ "\">"
							+ user.getUsername()
							+ "</a>&nbsp;</td>");
			out.println("<td align=\"center\">"
					+ (user.getGender().equals("m") ? "男" : "女") + "</td>");
			out.println("<td>" + user.getEmail() + "&nbsp;</td>");
			out
					.println("<td align=\"center\"><a onclick=\"return confirm('真的要删除该用户吗？')\" href=\"/ums/user/remove.action?id="
							+ user.getId() + "\">删除</a></td>");
			out.println("</tr>");
			index++;
		}
		out.println("</table>");
		out.println("<br>");
		out.println("<center>");
		out
				.println("<input type=\"button\" value=\"增加\" onclick=\"window.location='/ums/user/add.html'\">");
		out
				.println("<input type=\"button\" value=\"返回\" onclick=\"window.location='/ums/user/search.html'\">");
		out.println("</center>");
		out.println("</body>");
		out.println("</html>");
		out.flush();
		out.close();
	}

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

}
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