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HTML code:

<head>
<title>Ìí¼ÓÓû§ÐÅÏ¢</title>
</head>
<body>
<%
request.setCharacterEncoding("gb2312");
String reqUsername=request.getParameter("username");
String reqPassword=request.getParameter("userpassword");
%>
<%
String url="jdbc:mysql://localhost:3306/javaweb";
String user="root";
String password="admin";
Connection conn=null;
PreparedStatement pstmt=null;
ResultSet rs=null;
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection(url,user,password);
}catch(ClassNotFoundException e){
out.println("ÕÒ²»µ½Çý¶¯Àà");
}catch (SQLException e){
out.println("Á¬½ÓÊý¾Ý¿âʧ°Ü");
}
try{//Ìí¼Ó×¢²áÓû§
String addUser="INSERT INTO user(userid,username,password)VALUES(null,?,?)";


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String tempFileName = (String)session.getId();
//out.println(& ......

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<jsp:useBean id="db" class="wang.connectDB"/>
< ......

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<html>
<head>
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