地铁查询进度（1）
package lxj; import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; /** * * @author Hu * */ public class DBUtil { public static String db_url = "jdbc:mysql://localhost:3307/metro?useSSL=false&useUnicode=true&characterEncoding=UTF-8"; public static String db_user = "root"; public static String db_pass = "320775"; public static Connection getConn () { Connection conn = null; try { Class.forName("com.mysql.jdbc.Driver");// conn = DriverManager.getConnection(db_url, db_user, db_pass); } catch (Exception e) { e.printStackTrace(); } return conn; } /** * * @param state * @param conn */ public static void close (Statement state, Connection conn) { if (state != null) { try { state.close(); } catch (SQLException e) { e.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } public static void close (ResultSet rs, Statement state, Connection conn) { if (rs != null) { try { rs.close(); } catch (SQLException e) { e.printStackTrace(); } } if (state != null) { try { state.close(); } catch (SQLException e) { e.printStackTrace(); } } if (conn != null) { try { conn.close(); } catch (SQLException e) { e.printStackTrace(); } } } public static void main(String[] args) { Connection conn = getConn(); System.out.println("1111"); } }
package lxj; public class Metro { private int id; private String name; private int line; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getLine() { return line; } public void setLine(int line) { this.line = line; } public Metro() {} public Metro(int id,int line, String name) { this.id = id; this.name = name; this.line = line; } public Metro(int line, String name) { this.name = name; this.line = line; } }
package lxj; import java.sql.Connection; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.ArrayList; import java.util.List; import java.util.Scanner; import java.sql.*; /** * 课程Dao= * Dao层操作数据 * @author Hu * */ public class MetroDao { static PreparedStatement ps = null; static String sql = "select * from number1"; public List<Metro> list() { String sql = "select * from number1"; List<Metro> list = new ArrayList<>(); Connection conn = DBUtil.getConn(); Statement state = null; ResultSet rs = null; try { state = conn.createStatement(); rs = state.executeQuery(sql); Metro bean = null; while (rs.next()) { int id = rs.getInt("id"); String name2 = rs.getString("name"); int line2 = rs.getInt("line"); bean = new Metro(id,line2, name2); list.add(bean); } } catch (SQLException e) { e.printStackTrace(); } finally { DBUtil.close(rs, state, conn); } return list; } public static List<Metro> Load(Metro user1 , Metro user2) { int a= user1.getId(); int b=user2.getId(); if(user1.getLine()==user2.getLine()) { Connection conn = DBUtil.getConn(); String sql="select * from number1 where id between "+ a +" and "+ b +" "; Statement state = null; ResultSet rs = null; List<Metro> users = new ArrayList<Metro>(); Metro user = null; try { state = conn.createStatement(); rs = state.executeQuery(sql); while(rs.next()) { user = new Metro(); user.setId(rs.getInt("id")); user.setLine(rs.getInt("line")); user.setName(rs.getString("name")); users.add(user); //System.out.println(user); } } catch (SQLException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally { DBUtil.close(rs,state, conn); } return users; } else if(user1.getLine()!=user2.getLine()){ } return null; } public static Metro search(String sname) { Metro user=new Metro(); String sql = "select * from number1 where name='" + sname + "'"; Connection conn = DBUtil.getConn(); Statement state = null; ResultSet rs = null; try { state = conn.createStatement(); rs = state.executeQuery(sql); while (rs.next()) { int id = rs.getInt("id"); String name = rs.getString("name"); int line = rs.getInt("line"); user = new Metro(id ,line, name); } } catch (SQLException e) { e.printStackTrace(); } finally { DBUtil.close(rs, state, conn); } return user; } /*public static void main(String[] args) { List<Metro> users = new ArrayList<Metro>(); System.out.println("AAAAAA"); Scanner scan=new Scanner(System.in); String a=scan.next(); String b=scan.next(); Metro asd1=new Metro(); Metro asd2=new Metro(); asd1=search("上庄"); asd2=search("谈固"); Load(asd1,asd2); for(Metro u:users) { System.out.println(u.getId()); System.out.println(u.getName()); } }*/ }
我们两个的水平说实话确实不高，想着把页面做的更好看一点，但是地铁查询这个题目看起来简单，但是需要考虑的东西还是蛮多的，反向乘车，按不同需求乘车，等等，算法有好有坏，我们想写自己的最好水平，所以下手慢了一些，好好考虑了一段时间，但是感觉这个项目毕竟是两个人的团队项目，还是稳一点好，基本思路就是 输入起始站，获取并保存id及这一行的所有信息，在输入终点站，获取并保存id及这一行的所有信息，然后返回之间所有id及信息，我们现在还没完成换乘，但是基本查询以及页面完成了
package lxj; import java.util.List; /** * CourseService * ����� * @author Hu * */ public class MetroService { MetroDao cDao = new MetroDao(); public List<Metro> list() { return cDao.list(); } }
package lxj; import java.io.IOException; import java.util.ArrayList; import java.util.List; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @WebServlet("/MetroServlet") public class MetroServlet extends HttpServlet{ private static final long serialVersionUID = 1L; MetroService service=new MetroService(); /** * 方法选择 */ protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { req.setCharacterEncoding("utf-8"); resp.setContentType("text/html;charset=utf-8"); String method = req.getParameter("method"); if ("add".equals(method)) { /* add(req, resp); } else if ("del".equals(method)) { del(req, resp); } else if ("update".equals(method)) { update(req, resp);*/ } else if ("search".equals(method)) { search(req, resp); /*} else if ("getcoursebyid".equals(method)) { getCourseById(req, resp); } else if ("getcoursebyname".equals(method)) { getCourseByName(req, resp);*/ } else if ("list".equals(method)) { list(req, resp); } } /** * 查询（两个数的） * * **/ private void search(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{ req.setCharacterEncoding("UTF-8"); Metro dao=new Metro(); String sname = req.getParameter("sname"); String ename = req.getParameter("ename"); Metro user1=MetroDao.search(sname); Metro user2=MetroDao.search(ename); if(user1.getLine()==(user2.getLine())) { /* System.out.println(user1.getLine()); System.out.println(user2.getLine());*/ List<Metro> users = new ArrayList<Metro>(); // User user=new User(); users=MetroDao.Load(user1,user2); req.setAttribute("users", users); req.getRequestDispatcher("Login.jsp").forward(req,resp); } else if(user1.getLine()!=user2.getLine()){ req.setCharacterEncoding("UTF-8"); req.getRequestDispatcher("123.jsp").forward(req,resp); } } /* public static void main(String[] args) { List<Metro> users = new ArrayList<Metro>(); System.out.println("AAAAAA"); Metro asd=new Metro(); asd=MetroDao.search("上庄"); Metro user1=MetroDao.search("上庄"); Metro user2=MetroDao.search("谈固"); if(user1.getLine()==(user2.getLine())) { System.out.println(user1.getLine()); System.out.println(user2.getLine()); System.out.println(user1.getName()); System.out.println(user2.getName()); } }*/ /** * 全部 * @param req * @param resp * @throws ServletException */ private void list(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{ req.setCharacterEncoding("utf-8"); List<Metro> metros = service.list(); req.setAttribute("metros", metros); req.getRequestDispatcher("list.jsp").forward(req,resp); } }
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <style> body{ background-image:url(image/9470416_192942306623_2.jpg); } </style> </head> <body> <div align="center"> <div class="a"> <h1>由于编代码的技术暂时不够，换乘问题太多，为不给大家带来不便，故暂时不支持换乘，敬请期待！！！</h1> <div class="a"> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>石家庄地铁查询系统</title> <style> body{ background-image:url(image/1bc35bcc78134c544dc0672debf19b63.jpeg.jpg); } .a{ font-size: 26px; margin-top: 20px; } .a:hover{font-size:31px;} </style> </head> <body> <h3> 今天的日期是: <%= (new java.util.Date()).toLocaleString()%> </h3> <div align="center"> <div class="a"> <h1>石家庄地铁查询系统</h1> <div class="a"> <a href="MetroServlet?method=list">站名列表</a> </div> <div class="a"> <a href="query.jsp">查询界面</a> </div> </div> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>查看所有线路</title> <style> .a{ margin-top: 20px; } .b{ font-size: 20px; width: 160px; color: white; background-color: greenyellow; } .tb, td { border: 1px solid black; font-size: 22px; } </style> </head> <body> <% Object message = request.getAttribute("message"); if(message!=null && !"".equals(message)){ %> <script type="text/javascript"> alert("<%=request.getAttribute("message")%>"); </script> <%} %> <div align="center"> <h1 style="color: red;">石家庄地铁站信息列表</h1> <input type="button" value="返回主界面" onclick="window.location.href='index.jsp';"/><br> <table class="tb"> <tr> <td>id</td> <td>线路</td> <td>站名</td> </tr> <c:forEach items="${metros}" var="item"> <tr> <td>${item.id}</td> <td>${item.line}</td> <td>${item.name}</td> </tr> </c:forEach> </table> </div> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@page import="lxj.Metro" %> <%@page import="lxj.MetroDao" %> <%@page import="java.util.List" %> <%@page import="java.util.ArrayList" %> <%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>显示全部站点</title> </head> <body> <table> <tr> <td>站台名称</td> <td>线路号</td> </tr> <tr> <c:forEach items="${users}" var="item"> <tr> <td>${item.line}</td> <td>${item.name}</td> </tr> </c:forEach> </table> <input type="button" value="返回主界面" onclick="window.location.href='index.jsp';"/><br> </body> </html>
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <% Object message = request.getAttribute("message"); if(message!=null && !"".equals(message)){ %> <script type="text/javascript"> alert("<%=request.getAttribute("message")%>"); </script> <%} %> <div align="center"> <h1 style="color: red;">通过站名查询路线</h1> <a href="index.jsp">返回主页</a> <form action="MetroServlet?method=search" method="post" onsubmit="return check()"> <div class="a"> 起始站<input type="text" id="sname" name="sname"/> </div> <div class="a"> 终点站<input type="text" id="ename" name="ename" /> </div> <div class="a"> <button type="submit" class="b">查 询</button> </div> </form> </div> </body> </html>
