这是我第一次尝试这种应用程序时我有一个jsp文件
<html>
<head>
<title>Flight booking</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<link rel="stylesheet" href="css/style.css" type="text/css"
media="screen">`enter code here`
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Welcome <%=session.getAttribute("fname")%> !
</title>
</head>
<body>
<div class="container">
<div class="panel panel-default">
<div class="panel body" id="inner_panel_1">
<h4>
Welcome ,
<%=session.getAttribute("fname")%></h4>
</div>
<!--end panel 1 -->
<div class="panel body" id="inner_panel_2">
<form action="CustomerServlet" method="post">
<label for="viewClientInfo">View/Change
Client Information</label>
<input type="submit" name="viewClientInfo" id="viewClientInfo" class="btn btn-success"
data-toggle="collapse" data-target="#clientPanel">
</form>
<!-- end panel body -->
<div id="clientPanel" class="collapse">
<div
class="col-xs-12 col-sm-12 col-md-6 col-lg-6 col-xs-offset-0 col-sm-offset-0 col-md-offset-3 col-lg-offset-3 toppad">
<div class="panel panel-info">
<div class="panel-heading">
<h3 class="panel-title"></h3>
<td> <%=session.getAttribute("fname")%> </td>
<td> <%=session.getAttribute("lname")%> </td>
</div>
<div class="panel-body">
<div class="row">
<div class="col-md-3 col-lg-3 " align="center">
<img alt="User Pic"
src="http://icons.iconarchive.com/icons/icons8/windows-8/128/Transport-Airplane-Takeoff-icon.png"
class="img-circle img-responsive">
</div>
<div class=" col-md-9 col-lg-9 ">
<table class="table table-user-information">
<tbody>
<tr>
<td>First Name :</td>
<td><%=session.getAttribute("firstname")%></td>
</tr>
<tr>
<td>Last Name :</td>
<td><%=session.getAttribute("lastname")%></td>
</tr>
<tr>
<td>Apt Number:</td>
<td><%=session.getAttribute("aptNumber")%></td>
</tr>
<tr>
<td>Address</td>
<td><%=session.getAttribute("streetNum")%> <%=session.getAttribute("streetName")%>
</td>
</tr>
<tr>
<td>City, Country</td>
<td><%=session.getAttribute("city")%>, <%=session.getAttribute("country")%>
</td>
</tr>
<tr>
<td>Email</td>
<td><%=session.getAttribute("userEmail")%></td>
</tr>
<tr>
<td>Phone Number</td>
<td><%=session.getAttribute("phoneNum")%><br></td>
</tr>
</tbody>
</table>
<button type="button" class="btn btn-success" id="changePayment" data-toggle="collapse" data-target="#payment-panel">Change Payment Information</button>
</div>
</div>
</div>
</div>
</div>
<!--end panel 2 -->
</div>
<div id="payment-panel" class="collapse">
<div class="col-xs-12 col-md-4">
<div class="panel panel-default">
<div class="panel-heading">
<h3 class="panel-title">
Payment Details
</h3>
</div>
<div class="panel-body">
<form role="form" class="creditCard" action="CreditCardServlet" method="addCreditCard">
<div class="form-group">
<label for="cardNumber">
CARD NUMBER</label>
<div class="input-group">
<input type="text" class="form-control" id="cardNumber" placeholder="Valid Card Number"
required autofocus />
<span class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></span>
</div>
</div>
<div class="row">
<div class="col-xs-7 col-md-7">
<div class="form-group">
<label for="expiry">
EXPIRY DATE</label>
<div class="col-xs-6 col-lg-6 pl-ziro">
<input type="text" class="form-control" id="expiry" placeholder="MM/YYYY" required />
</div>
</div>
</div>
<div class="col-xs-5 col-md-5 pull-right">
<div class="form-group">
<label for="cvv">
CV CODE</label>
<input type="password" class="form-control" id="cvv" placeholder="CV" required />
</div>
</div>
</div>
</form>
<div class="col-md-4 text-center">
<button type="button" class="btn btn-success" id="submitPaymentInfo" >Submit</button>
</div>
</div>
</div>
</div>
</div>
</div>
<!-- end inner panel -->
<div class="panel body" id="inner_panel_3">
<button type="button" class="btn btn-success" id="viewBookings" data-toggle="collapse" data-target="#client-bookings-panel">View
Bookings</button>
</div>
<div id="client-bookings-panel" class="collapse">
<p>Client Bookings Dump for next Version</p>
</div>
<!--end panel 3 -->
<div class="panel body" id="inner_panel_4">
<button type="button" class="btn btn-success" id="bookFlightButton" data-toggle="collapse" data-target="#flight-booker-panel">Book
Flight for Next Version</button>
</div>
<div id="flight-booker-panel" class="collapse">Link to Flight Booker</div>
<!--end panel 4 -->
</div>
</div>
<!--end container -->
</body>
<script
src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script
src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</html>
我正在尝试获取刚刚从数据库登录的用户的信息，并使用上面的jsp将其显示给他们
public class UserInfoServlet {
public void doGet(HttpServletRequest request , HttpServletResponse response)throws ServletException{
}
}
我知道如何从jsp获取信息到java并将其保存到db但我不知道如何进入对开方向
答案 0 :(得分：0)
您需要连接到db，然后在会话中设置信息，如下所示：
public class DatabaseAccess extends HttpServlet{
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException
{
//you can use your own connection thing in you don't like the below code
static final String JDBC_DRIVER="com.mysql.jdbc.Driver";
static final String DB_URL="jdbc:mysql://localhost/TEST";
static final String USER = "root";
static final String PASS = "password";
try{
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(DB_URL, USER, PASS);
// Execute SQL query
Statement stmt = conn.createStatement();
String sql;
sql = "YOUR QUERY. YOU SAID YOU ALREADY KNOW THIS";
ResultSet rs = stmt.executeQuery(sql);
// Extract data from result set
while(rs.next()){
//Retrieve by column name
String fname = rs.getString("first");
String flast = rs.getString("last");
}
rs.close();
stmt.close();
conn.close();
}catch(SQLException se){
se.printStackTrace();
}catch(Exception e){
e.printStackTrace();
}finally{
try{
if(stmt!=null)
stmt.close();
}catch(SQLException se2){
}
try{
if(conn!=null)
conn.close();
}catch(SQLException se){
se.printStackTrace();
}
}
//get the session and set the values
HttpSession session = request.getSession();
session.setAttribute("fname", fname);
RequestDispatcher rd=req.getRequestDispatcher("/whateveristhejspname.jsp");
rd.forward(req, resp);
}
}
确保在web.xml文件中正确设置了映射
<servlet>
<servlet-name>DatabaseAccess</servlet-name>
<servlet-class>DatabaseAccess</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DatabaseAccess</servlet-name>
<url-pattern>/DatabaseAccess</url-pattern>
</servlet-mapping>
答案 1 :(得分：0)
select distinct bb.pk1 as LearnSourceKey,
sc.pk1 as SISSourceKey,
row_number () over (partition by bb.pk1 order by sc.SISCourseKey) as RowRank
from Source.SISCourse sc left join
source.SISTerm st
on sc.TermSourceKey = st.SISTermKey inner join
Source.COURSE_MAIN bb
on bb.batch_uid = (left(CatalogNumber, len(CatalogNumber) - 1) +
(case when st.TermDescription = 'Semester 1' then 'SEM-1' + '_' + st.AcademicYear end)
);
也许你想要这个