📄 reg.jsp
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<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="law.user" %>
<%@ page import="java.sql.*" %>
<%!
public String codeString(String s){
String str=s;
try{
byte b[]=str.getBytes("ISO-8859-1");
str=new String (b);
return str;
}catch(Exception e){return str;}
}
%>
<%!
public String formatString(String s){
//add format way here
return s;
}
%>
<jsp:useBean id="log" class="law.user" scope="session"/>
<html>
<head><title>reg</title></head>
<body>
<center>
<%@ include file="head.txt"%>
<%
if(log.getLogin().equals("true")){
if(request.getParameter("submit")!=null){
String newpwd,newpwd2,id;
id=request.getParameter("id");
newpwd=request.getParameter("newpwd");
newpwd2=request.getParameter("newpwd2");
if(id==null)id="";
if(newpwd==null)newpwd="";
if(newpwd2==null)newpwd="";
id=codeString(id);
id=formatString(id);
newpwd=codeString(newpwd);
newpwd=formatString(newpwd);
newpwd2=codeString(newpwd2);
newpwd2=formatString(newpwd2);
if(!newpwd.equals(newpwd2)){
out.println("<font color=#FF0000>两次密码输入不同！");
}
else{
Connection con;
Statement sql;
ResultSet rs;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con=DriverManager.getConnection("jdbc:odbc:law","","");
sql=con.createStatement();
String condition="select * from user where id='"+id+"'";
rs=sql.executeQuery(condition);
if(rs.next()){
out.println("<font color=#FF0000>数据库中已经存在这个用户了！");
}
else{
condition="insert into user values('"+id+"','"+newpwd+"')";
sql.executeUpdate(condition);
session.invalidate();
out.println("注册成功！请重新登录。");
}
con.close();
}catch(SQLException e){
out.println(e);
}catch(ClassNotFoundException e){
out.println(e);
}
}
}
else{
%>
<form action=reg.jsp method=post name=form>
<table width=400>
<tr>
<td width=150>用户：</td>
<td width=250><input type=text name=id></td>
</tr>
<tr>
<td width=150>密码：</td>
<td width=250><input type=password name=newpwd></td>
</tr>
<tr>
<td width=150>密码：</td>
<td width=250><input type=password name=newpwd2></td>
</tr>
</table>
<input type=submit name=submit value=提交>
<input type=reset name=reset value=重置>
</form>
<%
}
}
else{
out.print("<font color=#FF0000>您还没有登录。<br><a href='index.htm'>首页 </a>");
}
%>
</center>
</body>
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