一、完成的内容：
1.实现了用户登录系统的基本操作，可判断登录成功、密码错误和用户名不存在等情况并给出提示，可以实现不同的用户登录后所看到的界面功能不同。
<%@ 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>
#top{
border: 1px solid black;
500px;
height: 75px;
font-size: 50px;
text-align: center;
margin: auto;
padding-top: 25px;
background-color: gainsboro ;
}
#one{
/*border: 1px solid black;*/
500px;
height:auto;
background-color: ghostwhite;
margin: auto;
}
#two{
border: 1px solid black;
500px;
height: 250px;
text-align: center;
margin: auto;
background-color: ghostwhite;
}
</style>
</head>
<body>
<form action="Servlet" method="post">
<div id="top"><b><i>登录界面</i></b></div>
<div id="one">
<div id="two">
<br />
<br />
用户名： <input type="text" id="" name="username" /><br />
<br/><br />
密 码： <input type="password" id="" name="password"/><br />
<br /><br />
<input type="submit" id="enter" name="enter" value="登录"/>
<input type="button" id="zhuce" name="" value="注册" />
</div>
</div>
</form>
<%
if(request.getParameter("result")!=null&&request.getParameter("result").equals("yes"))
{
%>
<script>
alert("登录成功！");
window.location="main.jsp";
</script>
<%}
else if(request.getParameter("result")!=null&&request.getParameter("result").equals("no"))
{%>
<script>
alert("用户名不存在！");
window.location="Enter.jsp";
</script>
<%}
else if(request.getParameter("result")!=null&&request.getParameter("result").equals("ERROR")){ %>
<script>
alert("密码错误！");
window.location="Enter.jsp";
</script>
<%} %>
</body>
</html>
package dButil;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.security.auth.message.callback.PrivateKeyCallback.Request;
import domain.Enter;
public class DBUtil {
public static final String connectionURL="jdbc:mysql://localhost:3306/big-text?useUnicode=true&characterEncoding=GB18030&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true";
public static final String username="root";
public static final String psw="123456";
static Connection connection;
static ResultSet rSet;
static PreparedStatement sql;
public static Connection getConnection()
{
try {
Class.forName("com.mysql.cj.jdbc.Driver");
System.out.println("数据库连接成功");
return DriverManager.getConnection(connectionURL, username, psw);
} catch (Exception e) {
// TODO: handle exception
System.out.println("数据库连接失败");
e.printStackTrace();
}
return null;
}
//数据库连接
public static boolean search(String name)//查
{
try {
connection=getConnection();
sql=connection.prepareStatement("select * from enter where username='"+name+"'");
System.out.println(sql);
rSet=sql.executeQuery();
rSet.next();
int aid =rSet.getInt(2);
String password=rSet.getString(4);
Enter.setAid(aid);
Enter.setPassword(password);
//System.out.println(Enter.getPassword());
System.out.println(rSet.getString(1)+" "+rSet.getString(2)+" "+rSet.getString(3)+" "+rSet.getString(4)+" "+rSet.getString(5)+""+rSet.getString(6));
return true;
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
return false ;
}
}
public static void main(String[] args) {
search("hostdirector");
}
}
package Servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.jdt.internal.compiler.ast.DoubleLiteral;
import com.sun.org.apache.xml.internal.serializer.ElemDesc;
import dButil.DBUtil;
import domain.Enter;
/**
* Servlet implementation class Servlet
*/
@WebServlet("/Servlet")
public class Servlet extends HttpServlet {
private static final long serialVersionUID = 1L;
public static String username;
public static String password;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
//if (request.getParameter("na").equals("enter")) {
username=request.getParameter("username");
password=request.getParameter("password");
//System.out.println(password);
boolean a= DBUtil.search(username);
System.out.println(a);
if(a==true)
{
System.out.println(Enter.getPassword());
if(Enter.getPassword().equals(password))
{
request.getRequestDispatcher("Enter.jsp?result=yes").forward(request,response);
System.out.println("登陆成功");
}
else
{
request.getRequestDispatcher("Enter.jsp?result=ERROR").forward(request,response);
System.out.println("密码错误 ！");
}
}
else if(a==false)
{
request.getRequestDispatcher("Enter.jsp?result=no").forward(request, response);
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
package domain;
public class Enter {
public static String name;
public static String password;
public static int aid;
public static String job;
public static String start ;
public static String getName() {
return name;
}
public static void setName(String name) {
Enter.name = name;
}
public static String getPassword() {
return password;
}
public static void setPassword(String password) {
Enter.password = password;
}
public static int getAid() {
return aid;
}
public static void setAid(int aid) {
Enter.aid = aid;
}
public static String getJob() {
return job;
}
public static void setJob(String job) {
Enter.job = job;
}
public static String getStart() {
return start;
}
public static void setStart(String start) {
Enter.start = start;
}
}
main.jsp
<%@page import="domain.Enter"%>
<%@ 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>
div{
border: 1px solid black;
400px;
height: 50px;
background-color: greenyellow;
text-align: center;
font-size:25px ;
}
a{
text-decoration: none;
}
</style>
<script type="text/javascript">
function maketext() {
window.location="writedoc.jsp";
}
</script>
</head>
<body>
<div style=" 1500px; height: 1000px; margin: auto; background-color: ghostwhite;">
<%
if(Enter.getAid()==1)
{
System.out.println(Enter.getAid());
%>
<div id="top" style=" 1500px;height: 100px; background-color: gainsboro;text-align: center; font-size: 75px;">
功能界面
</div>
<div style="height:50px;"><font color="red" size="6">功能操作</font> </div>
<div ><a href="#">审签公文</a></div>
<div ><a href="#">浏览已发所有公文</a></div>
<div ><a href="#">查询公文</a></div>
<%}
else if(Enter.getAid()==2){
%>
<div id="top" style=" 1500px;height: 100px; background-color: gainsboro;text-align: center; font-size: 75px;">
功能界面
</div>
<div style="height:50px;"><font color="red" size="6">功能操作</font> </div>
<div ><a href="#">审核公文</a></div>
<div><a href="#">浏览已发所有公文</a></div>
<div ><a href="#">查询公文</a></div>
<% }
else if(Enter.getAid()>=4&&Enter.getAid()<=9) {
%>
<div id="top" style=" 1500px;height: 100px; background-color: gainsboro;text-align: center; font-size: 75px;">
功能界面
</div>
<div id="0" style="height:50px;"><font color="red" size="6">功能操作</font> </div>
<div id="1"><a href="writedoc.jsp"><font size="5px">公文拟制</font></a></div>
<div id="2"><a href="#">签收公文</a></div>
<div id="3"><a href="#">浏览公文</a></div>
<%
}
else if(Enter.getAid()==3){
%>
<div id="top" style=" 1500px;height: 100px; background-color: gainsboro;text-align: center; font-size: 75px;">
功能界面
</div>
<div id="0" style="height:50px;"><font color="red" size="6">功能操作</font> </div>
<div id="4"><a href="#">修改公文</a></div>
<div id="5"><a href="#">公文流转</a></div>
<div id="6"><a href="#">删除公文</a></div>
<div id="7"><a href="#">公文发送</a></div>
<%}
else if(Enter.getAid()==10){%>
<div id="top" style=" 1500px;height: 100px; background-color: gainsboro;text-align: center; font-size: 75px;">
功能界面
</div>
<div id="0" style="height:50px;"><font color="red" size="6">功能操作</font> </div>
<div id="12"><a href="#">用户管理</a></div>
<div id="13"><a href="#">角色管理</a></div>
<div id="10"><a href="#">公文流转流程管理</a></div>
<%} %>
</div>
</body>
</html>
2.实现了部门的文件拟制功能
<%@ 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>
textarea{
100%;
height:500px;
}
.btnbag{
100%;
text-align:center;
}
.btn{
150px;
height:40px;
border:0px;
border-radius:5px;
background-color:orange;
color:black;
margin-left:auto;
margin-top:10px
}
</style>
</head>
<body>
<h4>请输入公文标题：</h4>
<form action="" method="post">
<div><input type="text" class="form-control" id="title"></div>
<h4>请在下方书写正文：</h4>
<div>
<textarea id="doc" rows="20" cols="40"></textarea>
</div>
<div class="btnbag">
<input type="submit" class="btn" value="提交" onclick="submit()">
</div>
</form>
<%
if(request.getParameter("result")!=null&&request.getParameter("result").equals("yes"))
{
%>
<script>
alert("提交成功！");
window.location="main.jsp";
</script>
<%}%>
</body>
<script type="text/javascript">
function submit()
{
var text=$("#doc").val();
var user=GetQueryString("user");
var title=$("#title").val();
if(text==""||title=="")
{
alert("包含空内容！请填写完整！");
}
}
</script>
</html>
package writedoc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class WritedBUtil {
public static final String connectionURL="jdbc:mysql://localhost:3306/big-text?useUnicode=true&characterEncoding=GB18030&useSSL=false&serverTimezone=GMT&allowPublicKeyRetrieval=true";
public static final String username="root";
public static final String psw="123456";
static Connection connection;
static ResultSet rSet;
static PreparedStatement sql;
public static Connection getConnection()
{
try {
Class.forName("com.mysql.cj.jdbc.Driver");
System.out.println("数据库连接成功");
return DriverManager.getConnection(connectionURL, username, psw);
} catch (Exception e) {
// TODO: handle exception
System.out.println("数据库连接失败");
e.printStackTrace();
}
return null;
}
//数据库连接
public static boolean add(String title, String doc, int status,int result ,int delete, String receiver) //数据库的增添
{
try {
connection=getConnection();
sql =connection.prepareStatement("insert into new_table (title,doc,status,result,delete,receiver) values(\'"+title+"\',\'"+doc+"\',\'"+result+"\',\'"+delete+"\',\'"+receiver+"\')");
sql.executeUpdate();//执行语句
// System.out.println(sql);
} catch (SQLException e) {
// TODO 自动生成的 catch
e.printStackTrace();
}
return false;
}
public static boolean search(int x)//查
{
try {
connection=getConnection();
sql=connection.prepareStatement("select * from new_table where id="+x);
System.out.println(sql);
rSet=sql.executeQuery();
rSet.next();
System.out.println(rSet.getString(1)+" "+rSet.getString(2)+" "+rSet.getString(3)+" "+rSet.getString(4));
} catch (Exception e) {
// TODO: handle exception
}
return false;
}
}
package writedoc;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import domain.Enter;
/**
* Servlet implementation class WriteServlet
*/
@WebServlet("/WriteServlet")
public class WriteServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("UTF-8");
String title=request.getParameter("title");
String doc=request.getParameter("doc");
int status=2;
int result=0;
int delete=0;
String receiver="办公室";
boolean a= WritedBUtil.add(title, doc, status, result, delete, receiver);
if(a==true)
{
request.getRequestDispatcher("writedoc.jsp?result=yes").forward(request,response);
}
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
二、存在的问题：一些流程的操作感觉还不太清楚，web用的还不是很熟悉。