• Java期末考试冲刺总结


      经过长达将近三个小时的冲刺,我感觉身心俱疲,但它无法掩盖我敲代码的欲望!

      三个小时我只实现了公文流转系统的的部分功能。

      我深刻的意识到建民老师说的这套关系之复杂,它真的是太复杂了!!!没有系统的梳理,之前也没有系统地敲过这样一个程序,敲起来感到十分的头大!

      期末考试感觉压力很大!

      这部分是部门写邮件的代码,这部分我卡的是转码的问题,url传值出现了问题,最新版本的tomcat并不支持其他字符,需要转码

    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
            #d1{
                text-align: center;
                padding-top: 40px;
                font-family: "微软雅黑";
                font-size: 40px;
                background-color: #DDDDDD;
                height: 100px;
            }
            div ul{
                vertical-align: top;
                list-style-type: none;
                margin: 0px;
                vertical-align: left;
                width: 200px;
                padding: 0px;
                border-top: 20px solid #F8A0E7;
                border-bottom :20px solid #F8A0E7;
            }
            .headd{
                font-family: "微软雅黑";
                lighting-color: red;
                font-size: 20px;
            }
            div li a{
                height: 80px;
                display: block;
                padding: 0px 0px 0px 0em;
                text-decoration: none;
                border-left: 20px solid pink;
            }
            div li a:link,div li a:visited{
                background-color: #F0F0F0;
                color: #461737;
            }
            div li a:hover{
                background-color: green;
                color: gray;
            }
            div li a:active{
                background-color: pink;
            }
            #left{
            float:left;
            }
            #right{
            height:400px;
            width:120px;
            float:left;
            border:1px solid green; 
            }
            #inp{
            float:left;
            height:400px;
            width:1202px;
            }
            .btn{
            float:left;
            }
    </style>
    <script type="text/javascript">
    //function Onload(){
    //    var s="<%=request.getParameter("message")%>";
    //    if (s !== null || s !== undefined ||s !== '') { 
    //        alert(s);
    //        } 
    //}
    function Out(){
        var title=document.getElementById("title").value;
        if(title=="") {
            alert("标题不能为空!!!");
            return false;
        }
        var text=encodeURIComponent(document.getElementById("inp").value);
        var s="SaveAritical?text="+text+"&type=Document&title="+encodeURIComponent(title);
        window.location.href=s;
    }
    function Save(){
        var title=document.getElementById("title").value;
        if(title=="") {
            alert("标题不能为空!!!");
            return false;
        }
        var text=encodeURIComponent(document.getElementById("inp").value);
        var s="OutAritical?text="+text+"&type=Document&title="+encodeURIComponent(title);
        window.location.href=s;
    }
    
    
    </script>
    </head>
    <body onload="Onload()">
        <div id="d1">Aritical Of Department</div>
        <div id="left">
    <ul>
        <li class="headd"><a href="#" onclick="fresh()">Refresh</a></li>
        <li><a href="Document.jsp">公文拟制</a></li>
        <li><a href="Receive?type=Document">签收公文</a></li>
        <li><a href="DocumentView.jsp">浏览公文</a></li>
    </ul>
    </div>
    <div id="right">
    <div><textarea type="text" id="title" placeholder="输入标题">
    
    </textarea></div>
    <div ><textarea type="text" id="inp" placeholder="输入内容">
    
     </textarea></div>
    <div><button class="btn" onclick="Save()">保存</button></div>
    <div><button class="btn" onclick="Out()">发布</button></div>
    
    </div>
    </body>
    </html>

    这部分是保存 html:

    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
            #d1{
                text-align: center;
                padding-top: 40px;
                font-family: "微软雅黑";
                font-size: 40px;
                background-color: #DDDDDD;
                height: 100px;
            }
            div ul{
                vertical-align: top;
                list-style-type: none;
                margin: 0px;
                vertical-align: left;
                width: 200px;
                padding: 0px;
                border-top: 20px solid #F8A0E7;
                border-bottom :20px solid #F8A0E7;
            }
            .headd{
                font-family: "微软雅黑";
                lighting-color: red;
                font-size: 20px;
            }
            div li a{
                height: 80px;
                display: block;
                padding: 0px 0px 0px 0em;
                text-decoration: none;
                border-left: 20px solid pink;
            }
            div li a:link,div li a:visited{
                background-color: #F0F0F0;
                color: #461737;
            }
            div li a:hover{
                background-color: green;
                color: gray;
            }
            div li a:active{
                background-color: pink;
            }
            #left{
            float:left;
            }
            #right{
            height:400px;
            width:120px;
            float:left;
            border:1px solid green; 
            }
            #inp{
            float:left;
            height:400px;
            width:1202px;
            }
            .btn{
            float:left;
            }
    </style>
    <script type="text/javascript">
    function Onload(){
            alert("发布成功!");
    }
    function Out(){
        var title=document.getElementById("title").value;
        if(title=="") {
            alert("标题不能为空!!!");
            return false;
        }
        var text=encodeURIComponent(document.getElementById("inp").value);
        var s="OutAritical?text="+text+"&type=Document&title="+title;
        window.location.href=s;
    }
    function Save(){
        var title=document.getElementById("title").value;
        if(title=="") {
            alert("标题不能为空!!!");
            return false;
        }
        var text=encodeURIComponent(document.getElementById("inp").value);
        var s="SaveAritical?text="+text+"&type=Document&title="+title;
        window.location.href=s;
    }
    
    
    </script>
    </head>
    <body onload="Onload()">
        <div id="d1">Aritical Of Department</div>
        <div id="left">
    <ul>
        <li class="headd"><a href="#" onclick="fresh()">Refresh</a></li>
        <li><a href="Produce.jsp">公文拟制</a></li>
        <li><a href="Receive.jsp">签收公文</a></li>
        <li><a href="View.jsp">浏览公文</a></li>
    </ul>
    </div>
    <div id="right">
    <div><textarea type="text" id="title" placeholder="输入标题">
    
    </textarea></div>
    <div ><textarea type="text" id="inp" placeholder="输入内容">
    
     </textarea></div>
    <div><button class="btn" onclick="Save()">保存</button></div>
    <div><button class="btn" onclick="Out()">发布</button></div>
    
    </div>
    </body>
    </html>

    servlet:

    package com.Aritical.servlet;
    
    import java.io.IOException;
    import java.sql.Connection;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    
    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("/SaveAritical")
    public class SaveAritical extends HttpServlet {
        private static final long serialVersionUID = 1L;
        public SaveAritical() {
            super();
            // TODO Auto-generated constructor stub
        }
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            String text=request.getParameter("text");
            String type=request.getParameter("type");
            String title=request.getParameter("title");
            Link l=new Link();
            try {
                int id=0;
                Connection con=l.lin("AriticalManager");
                Statement stmt=con.createStatement();
                String queryid="select * from Aritical_"+type;
                ResultSet rsst=stmt.executeQuery(queryid);
                while(rsst.next()) {
                    id=Integer.parseInt(rsst.getString("id"));
                }
                rsst.close();
                id++;
                String s="insert into Aritical values("+id+",1,'"+title+"','"+text+"')";
                stmt.executeUpdate(s);
                stmt.close();
                con.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            String url=type+"Out.jsp";
            request.getRequestDispatcher(url).forward(request, response);
        }
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            // TODO Auto-generated method stub
            doGet(request, response);
        }
    
    }

     这是servlet:

    package com.Aritical.servlet;
    
    import java.io.IOException;
    import java.sql.Connection;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    
    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("/OutAritical")
    public class OutAritical extends HttpServlet {
        private static final long serialVersionUID = 1L;
        public OutAritical() {
            super();
        }
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            String text=request.getParameter("text");
            String type=request.getParameter("type");
            String title=request.getParameter("title");
            Link l=new Link();
            try {
                int id=0;
                Connection con=l.lin("AriticalManager");
                Statement stmt=con.createStatement();
                String queryid="select * from Aritical_"+type;
                ResultSet rsst=stmt.executeQuery(queryid);
                while(rsst.next()) {
                    id=Integer.parseInt(rsst.getString("id"));
                }
                rsst.close();
                id++;
                String s="insert into Aritical_"+type+" values("+id+",0,'"+title+"','"+text+"')";
                stmt.executeUpdate(s);
                stmt.close();
                con.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            String url=type+"Save.jsp";
            request.getRequestDispatcher(url).forward(request, response);
        }
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            doGet(request, response);
        }
    
    }

    这部分是发布的代码

    <%@ page language="java" contentType="text/html; charset=UTF-8"
        pageEncoding="UTF-8"%>
    <!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Document</title>
    <style type="text/css">
            #d1{
                text-align: center;
                padding-top: 40px;
                font-family: "微软雅黑";
                font-size: 40px;
                background-color: #DDDDDD;
                height: 100px;
            }
            div ul{
                vertical-align: top;
                list-style-type: none;
                margin: 0px;
                vertical-align: left;
                width: 200px;
                padding: 0px;
                border-top: 20px solid #F8A0E7;
                border-bottom :20px solid #F8A0E7;
            }
            .headd{
                font-family: "微软雅黑";
                lighting-color: red;
                font-size: 20px;
            }
            div li a{
                height: 80px;
                display: block;
                padding: 0px 0px 0px 0em;
                text-decoration: none;
                border-left: 20px solid pink;
            }
            div li a:link,div li a:visited{
                background-color: #F0F0F0;
                color: #461737;
            }
            div li a:hover{
                background-color: green;
                color: gray;
            }
            div li a:active{
                background-color: pink;
            }
            #left{
            float:left;
            }
            #right{
            height:400px;
            width:120px;
            float:left;
            border:1px solid green; 
            }
            #inp{
            float:left;
            height:400px;
            width:1202px;
            }
            .btn{
            float:left;
            }
    </style>
    <script type="text/javascript">
    function Onload(){
            alert("发布成功!");
    }
    function Out(){
        var title=document.getElementById("title").value;
        if(title=="") {
            alert("标题不能为空!!!");
            return false;
        }
        var text=encodeURIComponent(document.getElementById("inp").value);
        var s="OutAritical?text="+text+"&type=Document&title="+title;
        window.location.href=s;
    }
    function Save(){
        var title=document.getElementById("title").value;
        if(title=="") {
            alert("标题不能为空!!!");
            return false;
        }
        var text=encodeURIComponent(document.getElementById("inp").value);
        var s="SaveAritical?text="+text+"&type=Document&title="+title;
        window.location.href=s;
    }
    
    
    </script>
    </head>
    <body onload="Onload()">
        <div id="d1">Aritical Of Department</div>
        <div id="left">
    <ul>
        <li class="headd"><a href="#" onclick="fresh()">Refresh</a></li>
        <li><a href="Produce.jsp">公文拟制</a></li>
        <li><a href="Receive.jsp">签收公文</a></li>
        <li><a href="View.jsp">浏览公文</a></li>
    </ul>
    </div>
    <div id="right">
    <div><textarea type="text" id="title" placeholder="输入标题">
    
    </textarea></div>
    <div ><textarea type="text" id="inp" placeholder="输入内容">
    
     </textarea></div>
    <div><button class="btn" onclick="Save()">保存</button></div>
    <div><button class="btn" onclick="Out()">发布</button></div>
    
    </div>
    </body>
    </html>

     这是发布的servlet:

    package com.Aritical.servlet;
    
    import java.io.IOException;
    import java.sql.Connection;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    
    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("/SaveAritical")
    public class SaveAritical extends HttpServlet {
        private static final long serialVersionUID = 1L;
        public SaveAritical() {
            super();
            // TODO Auto-generated constructor stub
        }
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            String text=request.getParameter("text");
            String type=request.getParameter("type");
            String title=request.getParameter("title");
            Link l=new Link();
            try {
                int id=0;
                Connection con=l.lin("AriticalManager");
                Statement stmt=con.createStatement();
                String queryid="select * from Aritical_"+type;
                ResultSet rsst=stmt.executeQuery(queryid);
                while(rsst.next()) {
                    id=Integer.parseInt(rsst.getString("id"));
                }
                rsst.close();
                id++;
                String s="insert into Aritical values("+id+",1,'"+title+"','"+text+"')";
                stmt.executeUpdate(s);
                stmt.close();
                con.close();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            String url=type+"Out.jsp";
            request.getRequestDispatcher(url).forward(request, response);
        }
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            // TODO Auto-generated method stub
            doGet(request, response);
        }
    
    }

    签收:

    <%@ 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>DocumentReceive</title>
    <style type="text/css">
            #d1{
                text-align: center;
                padding-top: 40px;
                font-family: "微软雅黑";
                font-size: 40px;
                background-color: #DDDDDD;
                height: 100px;
            }
            div ul{
                vertical-align: top;
                list-style-type: none;
                margin: 0px;
                vertical-align: left;
                width: 200px;
                padding: 0px;
                border-top: 20px solid #F8A0E7;
                border-bottom :20px solid #F8A0E7;
            }
            .headd{
                font-family: "微软雅黑";
                lighting-color: red;
                font-size: 20px;
            }
            div li a{
                height: 80px;
                display: block;
                padding: 0px 0px 0px 0em;
                text-decoration: none;
                border-left: 20px solid pink;
            }
            div li a:link,div li a:visited{
                background-color: #F0F0F0;
                color: #461737;
            }
            div li a:hover{
                background-color: green;
                color: gray;
            }
            div li a:active{
                background-color: pink;
            }
            #left{
            float:left;
            }
            #right{
            height:400px;
            width:120px;
            float:left;
            border:1px solid green; 
            }
            #inp{
            float:left;
            height:400px;
            width:1202px;
            }
            .btn{
            float:left;
            }
    </style>
    <script type="text/javascript">
    function receive(){
        
        }
    </script>
    </head>
    <body>
        <div id="d1">Aritical Of Department</div>
        <div id="left">
    <ul>
        <li class="headd"><a href="#" onclick="fresh()">Refresh</a></li>
        <li><a href="Document.jsp">公文拟制</a></li>
        <li><a href="Receive?type=Document">签收公文</a></li>
        <li><a href="DocumentView.jsp">浏览公文</a></li>
    </ul>
    </div>
    <div id="right">
    <table>
    <c:forEach items="${list}" var="list" >
    <tr>
    <td onmouseover="this.style.backgroundColor='#FCADEC';"
                            onmouseout="this.style.backgroundColor='#d4e3e5';">${list.id}</td>
    <td onmouseover="this.style.backgroundColor='#FCADEC';"
                            onmouseout="this.style.backgroundColor='#d4e3e5';">${list.state}</td>
    <td onmouseover="this.style.backgroundColor='#FCADEC';"
                            onmouseout="this.style.backgroundColor='#d4e3e5';">${list.title}</td>
    </tr>
    <button onclick="receive()">签收</button>
    </c:forEach>
    </table>
    </div>
    </body>
    </html>

    这部分还没完善servlet:

    package com.Aritical.servlet;
    
    import java.io.IOException;
    import java.sql.Connection;
    import java.sql.ResultSet;
    import java.sql.SQLException;
    import java.sql.Statement;
    import java.util.ArrayList;
    
    import javax.servlet.ServletException;
    import javax.servlet.annotation.WebServlet;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    /**
     * Servlet implementation class Receive
     */
    @WebServlet("/Receive")
    public class Receive extends HttpServlet {
        private static final long serialVersionUID = 1L;
        public Receive() {
            super();
        }
        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            String type=request.getParameter("type");
            int min=0,max=0;
            ArrayList<AriticalBean> arr=new ArrayList<AriticalBean>();
            switch (type) {
            case "Document":
            {    min=1;
                max=4;
                break;
            }
            default:
                break;
            }
            Link l=new Link();
            try {
                Connection con=l.lin("AriticalManager");
                Statement stmt=con.createStatement();
                String s="select * from Aritical where id between "+min+" and "+max;
                ResultSet rsst=stmt.executeQuery(s);
                while(rsst.next()) {
                AriticalBean ab=new AriticalBean();
                ab.setId(rsst.getInt("id"));
                ab.setState(rsst.getInt("state"));
                ab.setTitle(rsst.getString("title"));
                ab.setText(rsst.getString("text"));
                arr.add(ab);
                }
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            request.setAttribute("list", arr);
            String s=type+"Receive.jsp";
            request.getRequestDispatcher(s).forward(request, response);
        }
        protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
            // TODO Auto-generated method stub
            doGet(request, response);
        }
    
    }

     目前只写出了这么点,稍后会完善并进行深度总结!

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  • 原文地址:https://www.cnblogs.com/XiaoGao128/p/12012316.html
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