Question

我的网络应用程序有这个JSP代码：

我在success子句中的"<a href="welcome.html">Delete</a>"处收到语法错误。任何人都可以帮我确定问题吗？谢谢，谢谢！

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!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>atozknowledge.com demo loginjsp</title>
</head>
<body>
    <%@ page import="java.sql.*"%>
    <%@ page import="javax.sql.*"%>
    <%
String userid=request.getParameter("usr"); 
session.putValue("userid",userid); 
String pwd=request.getParameter("pwd"); 
Class.forName("com.mysql.jdbc.Driver"); 
java.sql.Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/tomcat","root","root"); 
Statement st= con.createStatement(); 
ResultSet rs=st.executeQuery("select * from users where userid='"+userid+"'"); 
if(rs.next()) 
{ 
if(rs.getString(2).equals(pwd)) 
{ 
out.println("welcome"+userid); 
<a href="welcome.html">Delete</a>


} 
else 
{ 
out.println("Invalid password try again"); 
} 
} 
else 
%>
<a href="index.html">Home</a>
</body>
</html>

Answer 1

<a href="welcome.html">Delete</a>不是有效的Java代码。如果您想要退出Java scriptlet，请使用%>执行此操作（然后<%返回）：

%><a href="welcome.html">Delete</a><%

Answer 2

您的标记插入Java代码部分。 Juste移动你的标签或关闭你的scriptlet

if(rs.getString(2).equals(pwd)) 
{ 
out.println("welcome"+userid); 
%>
<a href="welcome.html">Delete</a>
<%

} 
else 
{ 
out.println("Invalid password try again"); 
}

尝试嵌入a-href时出现JSP语法错误

2 个答案: