<!--checkmanager-->
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>管理员登录检测</title>
</head>
<body>
<h2 align="center">管理员登录</h2>
<hr>
<%
try {
boolean f=false;
String passwordmanager = request.getParameter("passwordmanager");
String namemanager = request.getParameter("namemanager");
if(passwordmanager!=null &&namemanager!=null) {
if(passwordmanger.equals("") || namemanager.equals("")) {
}
else{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
String url="jdbc:odbc:conn";
String user="";
String password="";
Connection conn= DriverManager.getConnection(url,user,password);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
String sql="select * from manager where namemanager="'+namemanager+'"and passwordmanager="'+passwordmanager+'"";
ResultSet rs=stmt.executeQuery(sql);
f = rs.next();
if(f) {
response.sendRedirect("manager.jsp");
}
rs.close();
stmt.close();
conn.close();
}}
if(!f) {
response.sendRedirect("loginmanager.jsp");
%>
<%
}
}
catch(ClassNotFoundException e){
out.println("驱动程序类异常!<br>");
out.println(e.getMessage());
}
catch(SQLException e){
out.println("数据库连接或SQL查询异常!<br>");
out.println(e.getMessage());
}
catch(Exception e) {
out.println("其他异常!<br>");
out.println(e.getMessage());
}
%> </body>
</html>
好几个页面都是同样的错误:
exception org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 12 in the jsp file: /checkmanager.jsp
Generated servlet error:
Invalid character constant
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 12 in the jsp file: /checkmanager.jsp
Generated servlet error:
Invalid character constant
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.
谢谢解答
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>管理员登录检测</title>
</head>
<body>
<h2 align="center">管理员登录</h2>
<hr>
<%
try {
boolean f=false;
String passwordmanager = request.getParameter("passwordmanager");
String namemanager = request.getParameter("namemanager");
if(passwordmanager!=null &&namemanager!=null) {
if(passwordmanger.equals("") || namemanager.equals("")) {
}
else{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
String url="jdbc:odbc:conn";
String user="";
String password="";
Connection conn= DriverManager.getConnection(url,user,password);
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,
ResultSet.CONCUR_UPDATABLE);
String sql="select * from manager where namemanager="'+namemanager+'"and passwordmanager="'+passwordmanager+'"";
ResultSet rs=stmt.executeQuery(sql);
f = rs.next();
if(f) {
response.sendRedirect("manager.jsp");
}
rs.close();
stmt.close();
conn.close();
}}
if(!f) {
response.sendRedirect("loginmanager.jsp");
%>
<%
}
}
catch(ClassNotFoundException e){
out.println("驱动程序类异常!<br>");
out.println(e.getMessage());
}
catch(SQLException e){
out.println("数据库连接或SQL查询异常!<br>");
out.println(e.getMessage());
}
catch(Exception e) {
out.println("其他异常!<br>");
out.println(e.getMessage());
}
%> </body>
</html>
好几个页面都是同样的错误:
exception org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 12 in the jsp file: /checkmanager.jsp
Generated servlet error:
Invalid character constant
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.apache.jasper.JasperException: Unable to compile class for JSPAn error occurred at line: 12 in the jsp file: /checkmanager.jsp
Generated servlet error:
Invalid character constant
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:305)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.20 logs.
谢谢解答
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这一句 单双引号用错!!
改为
String sql="select * from manager where namemanager='"+namemanager+"'and passwordmanager='"+passwordmanager+"'";
passwordmanager拼错了
Invalid character constant解决了
但是现在我点提交后转不到response.sendRedirect("manager.jsp");
谢谢解答
response.sendRedirect("manager.jsp");
}
rs.close();
stmt.close();
conn.close();
}}
if(!f) {
response.sendRedirect("loginmanager.jsp");
%>
<%
应该是要跳转的啊,可是我点提交后,它既不跳转也不出错,只在这页面,还把我输入的用户名和密码清空