地铁系统PC端代码
代码顺序为项目文件顺序从上到下
package org.example.dao;
import org.example.pojo.Station;
import java.sql.ResultSet;
import java.util.List;
public interface SubWay {
List<String> stations(String line);
List<String> lines(String stationname);
List<Station> getShortLine(String start, String end);
List<Station> getLessLines(String start, String end);
List<String> res_line(ResultSet resultSet);
List<Integer> res_stationid(ResultSet resultSet);
}package org.example.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.util.List;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Station {
private int stationid;
private String stationname;
private List<String> lines;
private List<Integer> next;
private int provideid;
}package org.example.service;
import lombok.SneakyThrows;
import org.example.dao.SubWay;
import org.example.pojo.Station;
import org.example.utils.SqlUtils;
import java.sql.Array;
import java.sql.ResultSet;
import java.util.*;
public class SubWayService implements SubWay {
@SneakyThrows
@Override
public List<String> stations(String line) {
SqlUtils.getConnection();
String sql="select * from line where "+line+"!=-1 order by stationid";
ResultSet resultSet=SqlUtils.query(sql,null);
if (!resultSet.next()) return null;
resultSet.previous();
List<String> stations=new ArrayList<>();
while (resultSet.next()){
stations.add(resultSet.getString("stationname"));
}
SqlUtils.closeConnection();
return stations;
}
@SneakyThrows
@Override
public List<String> lines(String stationname) {
SqlUtils.getConnection();
System.out.println(stationname);
String sql="select * from line where stationname = ?";
ResultSet resultSet=SqlUtils.query(sql,new String[]{stationname});
if (!resultSet.next()) return null;
resultSet.previous();
resultSet.next();
List<String> lines=res_line(resultSet);
SqlUtils.closeConnection();
return lines;
}
@SneakyThrows
public List<Station> getShortLine(String start, String end){
SqlUtils.getConnection();
String sql="select * from line";;
HashMap<Integer,Station> stationHashMap=new HashMap<>();
HashMap<Integer,Integer> dis=new HashMap<>();
ResultSet resultSet=SqlUtils.query(sql,null);
if (!resultSet.next()) return null;
resultSet.previous();
int st=0;
int en=0;
while (resultSet.next()){
dis.put(resultSet.getInt(1),0x3f3f3f3f);
if(resultSet.getString(2).equals(start)) st=resultSet.getInt(1);
if(resultSet.getString(2).equals(end)) en=resultSet.getInt(1);
stationHashMap.put(resultSet.getInt(1),
new Station(resultSet.getInt(1),
resultSet.getString(2),
res_line(SqlUtils.query("select * from line where stationid=?",new Integer[]{resultSet.getInt(1)})),
res_stationid(SqlUtils.query("select * from transfer where startid=?",new Integer[]{resultSet.getInt(1)})),
-1
));
}
Queue<Integer> queue=new LinkedList<>();
queue.offer(st);
dis.put(st,0);
List<Integer> temp=null;
while (!queue.isEmpty()){
int t= queue.poll();
if(t==en) break;
temp=stationHashMap.get(t).getNext();
if(temp==null) continue;
for(int i:temp){
if(dis.get(i)>dis.get(t)+1){
dis.put(i,dis.get(t)+1);
stationHashMap.get(i).setProvideid(t);
if(!queue.contains(i)) queue.add(i);
}
}
}
List<Station> res=new ArrayList<>();
int k=en;
while (k!=-1){
res.add(stationHashMap.get(k));
k=stationHashMap.get(k).getProvideid();
}
Collections.reverse(res);
SqlUtils.closeConnection();
return res;
}
@SneakyThrows
public List<Station> getLessLines(String start, String end){
SqlUtils.getConnection();
String sql="select * from line";
HashMap<Integer,Station> stationHashMap=new HashMap<>();
HashMap<Integer,Integer> dis=new HashMap<>();
ResultSet resultSet=SqlUtils.query(sql,null);
if (!resultSet.next()) return null;
resultSet.previous();
int st=0;
int en=0;
while (resultSet.next()){
dis.put(resultSet.getInt(1),0x3f3f3f3f);
if(resultSet.getString(2).equals(start)) st=resultSet.getInt(1);
if(resultSet.getString(2).equals(end)) en=resultSet.getInt(1);
stationHashMap.put(resultSet.getInt(1),
new Station(resultSet.getInt(1),
resultSet.getString(2),
res_line(SqlUtils.query("select * from line where stationid=?",new Integer[]{resultSet.getInt(1)})),
res_stationid(SqlUtils.query("select * from transfer where startid=?",new Integer[]{resultSet.getInt(1)})),
-1
));
}
Queue<Integer> queue=new LinkedList<>();
queue.offer(st);
dis.put(st,0);
List<Integer> temp=null;
while (!queue.isEmpty()){
int t= queue.poll();
temp=stationHashMap.get(t).getNext();
if(temp==null) continue;
for(int i:temp){
if(Collections.disjoint(stationHashMap.get(t).getLines(),stationHashMap.get(i).getLines())){
if(dis.get(i)>dis.get(t)+1){
dis.put(i,dis.get(t)+1);
stationHashMap.get(i).setProvideid(t);
if(!queue.contains(i)) queue.add(i);
}
}
else{
if(dis.get(i)>dis.get(t)){
dis.put(i,dis.get(t));
stationHashMap.get(i).setProvideid(t);
if(!queue.contains(i)) queue.add(i);
}
}
}
}
int k=en;
List<Station> res=new ArrayList<>();
while (k!=-1){
res.add(stationHashMap.get(k));
k=stationHashMap.get(k).getProvideid();
}
Collections.reverse(res);
SqlUtils.closeConnection();
return res;
}
@SneakyThrows
public List<String> res_line(ResultSet resultSet){
resultSet.next();
List<String> lines=new ArrayList<>();
if(resultSet.getInt(3)>0) lines.add("地铁1号线");
if(resultSet.getInt(4)>0) lines.add("地铁八通线");
if(resultSet.getInt(5)>0) lines.add("地铁2号线");
if(resultSet.getInt(6)>0) lines.add("地铁4号线");
if(resultSet.getInt(7)>0) lines.add("地铁大兴线");
if(resultSet.getInt(8)>0) lines.add("地铁5号线");
if(resultSet.getInt(9)>0) lines.add("地铁6号线");
if(resultSet.getInt(10)>0) lines.add("地铁7号线");
if(resultSet.getInt(11)>0) lines.add("地铁8号线");
if(resultSet.getInt(12)>0) lines.add("地铁9号线");
if(resultSet.getInt(13)>0) lines.add("地铁10号线");
if(resultSet.getInt(14)>0) lines.add("地铁13号线");
if(resultSet.getInt(15)>0) lines.add("地铁14号线");
if(resultSet.getInt(16)>0) lines.add("地铁15号线");
if(resultSet.getInt(17)>0) lines.add("地铁房山线");
if(resultSet.getInt(18)>0) lines.add("地铁昌平线");
if(resultSet.getInt(19)>0) lines.add("地铁亦庄线");
if(resultSet.getInt(20)>0) lines.add("机场线");
return lines;
}
@SneakyThrows
public List<Integer> res_stationid(ResultSet resultSet){
List<Integer> id=new ArrayList<>();
while (resultSet.next()){
id.add(resultSet.getInt(2));
}
return id;
}
}package org.example.servlet;
import javax.servlet.*;
import java.io.IOException;
public class AllFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
System.out.println("过滤器加载");
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
servletRequest.setCharacterEncoding("UTF-8");
servletResponse.setCharacterEncoding("UTF-8");
filterChain.doFilter(servletRequest,servletResponse);
}
@Override
public void destroy() {
System.out.println("过滤器销毁");
}
}package org.example.servlet;
import org.example.dao.SubWay;
import org.example.pojo.Station;
import org.example.service.SubWayService;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
public class SelectLessLines extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
SubWay subWay=new SubWayService();
String start=req.getParameter("start");
String end=req.getParameter("end");
List<Station> stations=subWay.getLessLines(start,end);
req.setAttribute("stations",stations);
req.getRequestDispatcher("/resless").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req,resp);
}
}package org.example.servlet;
import org.example.dao.SubWay;
import org.example.service.SubWayService;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
public class SelectLines extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
SubWay service=new SubWayService();
List<String> list=service.lines(req.getParameter("stationname"));
req.setAttribute("lines",list);
req.getRequestDispatcher("/resline").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req,resp);
}
}package org.example.servlet;
import org.example.dao.SubWay;
import org.example.pojo.Station;
import org.example.service.SubWayService;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
public class SelectShortLine extends HttpServlet {
@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
SubWay subWay=new SubWayService();
String start=req.getParameter("start");
String end=req.getParameter("end");
List<Station> stations=subWay.getShortLine(start,end);
req.setAttribute("stations",stations);
req.getRequestDispatcher("/resshort").forward(req,resp);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req,resp);
}
}package org.example.servlet;
import org.example.dao.SubWay;
import org.example.service.SubWayService;
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 java.io.IOException;
import java.util.List;
public class SelectStations extends HttpServlet {
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
SubWay service=new SubWayService();
List<String> list=service.stations(req.getParameter("kind"));
req.setAttribute("stations",list);
req.getRequestDispatcher("/resstation").forward(req,resp);
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req,resp);
}
}package org.example.utils;
import lombok.SneakyThrows;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
public class SqlUtils {
private static String driver = "com.mysql.jdbc.Driver";
private static String url = "jdbc:mysql://localhost:3307/subway";
private static String username = "root";
private static String password = "123456";
private static Connection connection;
private static PreparedStatement preparedStatement;
@SneakyThrows
public static void getConnection() {
Class.forName(driver);
connection = DriverManager.getConnection(url, username, password);
}
@SneakyThrows
public static int update(String sql, Object[] s) {
preparedStatement = connection.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
if(s==null) return preparedStatement.executeUpdate();
for (int i = 0; i < s.length; i++) {
if (s[i] == null) {
return 0;
}
preparedStatement.setObject(i + 1, s[i]);
}
return preparedStatement.executeUpdate();
}
@SneakyThrows
public static ResultSet query(String sql, Object[] s) {
preparedStatement = connection.prepareStatement(sql, ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);
if(s==null) return preparedStatement.executeQuery();
for (int i = 0; i < s.length; i++) {
if (s[i] == null) {
break;
}
preparedStatement.setObject(i + 1, s[i]);
}
return preparedStatement.executeQuery();
}
@SneakyThrows
public static void closeConnection(){
if(preparedStatement!=null) preparedStatement.close();
if(connection!=null) connection.close();
}
}<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="java.util.List" %>
<%@ page import="org.example.pojo.Station" %>
<%@ page import="org.apache.commons.collections.CollectionUtils" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.Collections" %>
<html>
<head>
<title>最少换乘路线</title>
<style>
th{
border: orange solid 2px;
font-size: 40pt
}
td{
border: orange solid 2px;
font-size: 20pt
}
</style>
</head>
<body>
<table>
<%
List<Station> stations=(List<Station>) request.getAttribute("stations");
if(stations!=null){
boolean flag=false;
List<String> a=new ArrayList<>();
List<String> b=new ArrayList<>();
List<String> c=new ArrayList<>();
List<String> ab=new ArrayList<>();
List<String> bc=new ArrayList<>();
%>
<tr>
<th>路线站点名</th>
</tr>
<tr>
<td>站点数量:<%=stations.size()%></td>
</tr>
<%for(int i=0;i<stations.size();i++){
a=null;
b=null;
c=null;
flag=false;
if(i-1>0) a=stations.get(i-1).getLines();
b=stations.get(i).getLines();
if(i+1<stations.size()) c=stations.get(i+1).getLines();
if(a!=null&&c!=null){
bc= (List<String>) CollectionUtils.intersection(b,c);
flag=!Collections.disjoint(a,c);
}
else flag=true;
%>
<tr>
<td>
<%=stations.get(i).getStationname()%>
<%
if(!flag){
response.getWriter().print("(换乘"+bc.get(0)+")");
}
%>
</td>
</tr>
<%}%>
<%}%>
</table>
</body>
</html><%@ page import="java.util.List" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>路线结果</title>
</head>
<body style="text-align: center">
<table>
<%
List<String> lines=(List<String>) request.getAttribute("lines");
if(lines!=null){
%>
<tr>
<th style="border: orange solid 2px;font-size: 40pt">所属线路</th>
</tr>
<%for(String s:lines){%>
<tr>
<td style="border: orange solid 2px;font-size: 20pt"><%=s%></td>
</tr>
<%}%>
<%
}
else {
%>
<%}%>
</table>
</body>
</html><%@ page import="java.util.List" %>
<%@ page import="org.example.pojo.Station" %>
<%@ page import="org.apache.commons.collections.CollectionUtils" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.util.Collections" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>最短路线</title>
<style>
th{
border: orange solid 2px;
font-size: 40pt
}
td{
border: orange solid 2px;
font-size: 20pt
}
</style>
</head>
<body>
<table>
<%
List<Station> stations=(List<Station>) request.getAttribute("stations");
if(stations!=null){
boolean flag=false;
List<String> a=new ArrayList<>();
List<String> b=new ArrayList<>();
List<String> c=new ArrayList<>();
List<String> ab=new ArrayList<>();
List<String> bc=new ArrayList<>();
%>
<tr>
<th>路线站点名</th>
</tr>
<tr>
<td>站点数量:<%=stations.size()%></td>
</tr>
<%for(int i=0;i<stations.size();i++){
a=null;
b=null;
c=null;
flag=false;
if(i-1>0) a=stations.get(i-1).getLines();
b=stations.get(i).getLines();
if(i+1<stations.size()) c=stations.get(i+1).getLines();
if(a!=null&&c!=null){
bc= (List<String>) CollectionUtils.intersection(b,c);
flag=!Collections.disjoint(a,c);
}
else flag=true;
%>
<tr>
<td>
<%=stations.get(i).getStationname()%>
<%
if(!flag){
response.getWriter().print("(换乘"+bc.get(0)+")");
}
%>
</td>
</tr>
<%}%>
<%}%>
</table>
</body>
</html><%@ page import="java.util.List"%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>站点结果</title>
</head>
<body style="text-align: center">
<table>
<%
List<String> stations=(List<String>) request.getAttribute("stations");
if(stations!=null){
%>
<tr>
<th style="font-size: 40pt;border: orange solid 2px;">站点名称</th>
</tr>
<%for (String s:stations){%>
<tr>
<td style="border: orange solid 2px;font-size: 20pt"><%=s%></td>
</tr>
<%}%>
<%
}
%>
</table>
</body>
</html><?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<servlet>
<servlet-name>SelectStations</servlet-name>
<servlet-class>org.example.servlet.SelectStations</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>SelectStations</servlet-name>
<url-pattern>/selectstations</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>SelectLines</servlet-name>
<servlet-class>org.example.servlet.SelectLines</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>SelectLines</servlet-name>
<url-pattern>/selectlines</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>resstation</servlet-name>
<jsp-file>/WEB-INF/Stations.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>resstation</servlet-name>
<url-pattern>/resstation</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>resline</servlet-name>
<jsp-file>/WEB-INF/Lines.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>resline</servlet-name>
<url-pattern>/resline</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>selectshortline</servlet-name>
<servlet-class>org.example.servlet.SelectShortLine</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>selectshortline</servlet-name>
<url-pattern>/selectshort</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>selectlessline</servlet-name>
<servlet-class>org.example.servlet.SelectLessLines</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>selectlessline</servlet-name>
<url-pattern>/selectless</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>resshort</servlet-name>
<jsp-file>/WEB-INF/ShortLine.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>resshort</servlet-name>
<url-pattern>/resshort</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>resless</servlet-name>
<jsp-file>/WEB-INF/LessLine.jsp</jsp-file>
</servlet>
<servlet-mapping>
<servlet-name>resless</servlet-name>
<url-pattern>/resless</url-pattern>
</servlet-mapping>
<filter>
<filter-name>allfilter</filter-name>
<filter-class>org.example.servlet.AllFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>allfilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app><%@ page import="java.util.List" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>北京地铁系统</title>
<style>
body{
text-align: center;
}
span{
margin: 5px;
border: 2px solid blanchedalmond;
font-size: 15pt;
background: blanchedalmond;
}
form{
text-align: center;
border: deepskyblue solid 2px;
width: 400px;
height: 400px;
margin-left: 200px;
margin-top: 50px;
}
input{
font-size: 15pt;
}
</style>
<script>
function a1(){
document.getElementById('f1').style.display='block'
document.getElementById('f2').style.display='none'
document.getElementById('f3').style.display='none'
document.getElementById('f4').style.display='none'
document.getElementById('t1').style.background='paleturquoise'
document.getElementById('t2').style.background='blanchedalmond'
document.getElementById('t3').style.background='blanchedalmond'
document.getElementById('t4').style.background='blanchedalmond'
}
function a2(){
document.getElementById('f1').style.display='none'
document.getElementById('f2').style.display='block'
document.getElementById('f3').style.display='none'
document.getElementById('f4').style.display='none'
document.getElementById('t1').style.background='blanchedalmond'
document.getElementById('t2').style.background='paleturquoise'
document.getElementById('t3').style.background='blanchedalmond'
document.getElementById('t4').style.background='blanchedalmond'
}
function a3(){
document.getElementById('f1').style.display='none'
document.getElementById('f2').style.display='none'
document.getElementById('f3').style.display='block'
document.getElementById('f4').style.display='none'
document.getElementById('t1').style.background='blanchedalmond'
document.getElementById('t2').style.background='blanchedalmond'
document.getElementById('t3').style.background='paleturquoise'
document.getElementById('t4').style.background='blanchedalmond'
}
function a4(){
document.getElementById('f1').style.display='none'
document.getElementById('f2').style.display='none'
document.getElementById('f3').style.display='none'
document.getElementById('f4').style.display='block'
document.getElementById('t1').style.background='blanchedalmond'
document.getElementById('t2').style.background='blanchedalmond'
document.getElementById('t3').style.background='blanchedalmond'
document.getElementById('t4').style.background='paleturquoise'
}
</script>
</head>
<body>
<span onclick="a1()" id="t1">线路站点查询</span>
<span onclick="a2()" id="t2">线路名称查询</span>
<span onclick="a3()" id="t3">最短路径查询查询</span>
<span onclick="a4()" id="t4">最少换乘查询</span>
<form id="f1" style="display: block" action="/selectstations" method="post">
<h1>线路站点选择</h1>
<select name="kind" style="font-size: 20pt">
<option value="line1">地铁1号线</option>
<option value="line2">地铁八通线</option>
<option value="line3">地铁2号线</option>
<option value="line4">地铁4号线</option>
<option value="line5">地铁大兴线</option>
<option value="line6">地铁5号线</option>
<option value="line7">地铁6号线</option>
<option value="line8">地铁7号线</option>
<option value="line9">地铁8号线</option>
<option value="line10">地铁9号线</option>
<option value="line11">地铁10号线</option>
<option value="line12">地铁13号线</option>
<option value="line13">地铁14号线</option>
<option value="line14">地铁15号线</option>
<option value="line15">地铁房山线</option>
<option value="line16">地铁昌平线</option>
<option value="line17">地铁亦庄线</option>
<option value="line18">机场线</option>
</select>
<input type="submit" value="查询" style="margin: 30px;font-size: 15pt">
</form>
<form id="f2" style="display: none" action="/selectlines" method="post">
<h1>站点名</h1>
<input type="text" name="stationname" placeholder="请输入站点名" required="required">
<br/>
<input type="submit" value="查询" style="margin: 30px;font-size: 15pt">
</form>
<form id="f3" style="display: none" method="post" action="/selectshort">
<h1>起点</h1>
<input type="text" name="start"placeholder="输入起始点" required="required">
<h1>终点</h1>
<input type="text" name="end" placeholder="请输入终点" required="required">
<br/>
<input type="submit" value="查询" style="margin: 30px;font-size: 15pt">
</form>
<form id="f4" style="display: none" method="post" action="/selectless">
<h1>起点</h1>
<input type="text" name="start" placeholder="输入起始点" required="required">
<h1>终点</h1>
<input type="text" name="end" placeholder="请输入终点" required="required">
<br/>
<input type="submit" value="查询" style="margin: 30px;font-size: 15pt">
</form>
</body>
</html>
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