JSP页面将无法在Eclipse中打开
[英]JSP Page Will Not Open in Eclipse
问题描述
Okay, so I have a weird situation. 
好吧，我的情况很奇怪。 I basically created this JSP page that was working previously, or at least in the sense that Eclipse would open a new tab with the page displayed when I ran the code. 我基本上创建了这个以前运行过的JSP页面，或者至少从某种意义上来说，就是说Eclipse将在运行代码时打开一个新选项卡，并显示该页面。 But today, when I went back in to look at the form I had created, it basically flashes the new tab for a second and then automatically closes. 但是今天，当我回过头来查看创建的表单时，它基本上会在新选项卡上闪烁一秒钟，然后自动关闭。 I am not getting any errors in the console or the tomcat logs, so I'm not sure what is going on. 我在控制台或tomcat日志中没有收到任何错误，所以我不确定发生了什么。 I tried creating a new JSP file (without the same code) in the same project and it loaded correctly. 我尝试在同一项目中创建一个新的JSP文件（没有相同的代码），并正确加载了该文件。 Has anyone had any experience with a similar issue? 有没有人有过类似问题的经验？
Below is my code... 下面是我的代码...
<%@page import="java.sql.*"%>
<!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=ISO-8859-1">
<title>Code Selector</title>
</head>
<body>
<h1>Please select the applicable codes:</h1>
<select name='Code' onchange="showState(this.value)">
<option value="none">Select a code</option>
<%
//Pulls the ids and decriptions from the codes table and stores them in the first drop down
try
{
Class.forName("driverName").newInstance();
Connection con = DriverManager.getConnection("serverURL","username","password");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select id, descr from codes");
while(rs.next())
{
%>
<option value="<%=rs.getString(1)%>"><%=rs.getString(1)%> <%=rs.getString(2)%></option>
<%
}
//Closes the database connection
stmt.close();
con.close();
}
catch (ClassNotFoundException e)
{
System.err.println("ClassNotFoundException: " + e.getMessage());
}
catch (SQLException e)
{
System.err.println("SQLException: " + e.getMessage());
}
catch (Exception e)
{
System.err.println("Generic Exception: " + e.getMessage());
}
%>
</select>
<br>
<br>
<select name='Code2' onchange="showState(this.value)">
<option value="none">Select a code</option>
<%
//Pulls the ids and decriptions from the codes table and stores them in the second drop down
try
{
Class.forName("driverName").newInstance();
Connection con = DriverManager.getConnection("serverURL","username","password");
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select id, descr from codes");
while(rs.next())
{
%>
<option value="<%=rs.getString(1)%>"><%=rs.getString(1)%> <%=rs.getString(2)%></option>
<%
}
//Closes the database connection
stmt.close();
con.close();
}
catch (ClassNotFoundException e)
{
System.err.println("ClassNotFoundException: " + e.getMessage());
}
catch (SQLException e)
{
System.err.println("SQLException: " + e.getMessage());
}
catch (Exception e)
{
System.err.println("Generic Exception: " + e.getMessage());
}
%>
</select>
<br>
<br>
<select name='otherCode' onchange="showState(this.value)">
<option value="none">Select a other code</option>
<%
//Pulls the ids and decriptions from the other codes table and stores them in the third drop down
try
{
Class.forName("driverName").newInstance();
Connection con = DriverManager.getConnection("serverURL","username","password");
Statement stmt = con.createStatement();
ResultSet rs2 = stmt.executeQuery("select id, descr from other_codes");
while(rs2.next())
{
%>
<option value="<%=rs2.getString(1)%>"><%=rs2.getString(1)%> <%=rs2.getString(2)%></option>
<%
}
//Closes the database connection
stmt.close();
con.close();
}
catch (ClassNotFoundException e)
{
System.err.println("ClassNotFoundException: " + e.getMessage());
}
catch (SQLException e)
{
System.err.println("SQLException: " + e.getMessage());
}
catch (Exception e)
{
System.err.println("Generic Exception: " + e.getMessage());
}
%>
</select>
<br>
<br>
<form method = "post">
<input type="submit" value="Submit">
<%
try
{
String Code = request.getParameter("Code");
String Code2 = request.getParameter("Code2");
String otherCode = request.getParameter("otherCode");
Class.forName("driverName").newInstance();
Connection con = DriverManager.getConnection("serverURL","username","password");
Statement stmt = con.createStatement();
//ResultSet rs3 = stmt.executeQuery();
System.out.println("This is the first code: " + Code);
System.out.println("This is the second code: " + Code2);
System.out.println("This is the other code: " + otherCode);
con.close();
stmt.close();
}
catch (ClassNotFoundException e)
{
System.err.println("ClassNotFoundException: " + e.getMessage());
}
catch (SQLException e)
{
System.err.println("SQLException: " + e.getMessage());
}
catch (Exception e)
{
System.err.println("Generic Exception: " + e.getMessage());
}
%>
<script>
window.close();
</script>
</form>
</body>
</html>
1 个解决方案
解决方案1
0 已采纳 2012-09-27 22:05:45
Well this is pretty silly. 好吧，这很愚蠢。 So I created another new jsp file, with the same code, except for the code in the <script> tag and everything worked fine. 因此，我用相同的代码创建了另一个新的jsp文件，但<script>标记中的代码除外，并且一切正常。 I then re-added the <script> tag and it worked fine the first time. 然后，我重新添加了<script>标记，并且第一次运行良好。 However, the next time I went to try it, the original problem occurred again. 但是，下次我去尝试时，原来的问题又出现了。 Then when I went to remove the <script> tag once more, the issue still remained. 然后，当我再次删除<script>标记时，问题仍然存在。 So whatever reason, it seems once you add the window.close() , it permanently stays on the page? 因此，无论window.close()什么原因，似乎一旦添加window.close() ，它就会永久停留在页面上？
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.