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分享tomcat不能跳转,求大神帮忙
登录界面login,验证处理类logincl,欢迎界面welcome,配置xml了
在tomcat中不能完成验证
希望大神帮忙
在tomcat中不能完成验证
希望大神帮忙
package com.txj.servlet.demo;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Login extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
// 中文乱码
res.setContentType("text/html;charset=gbk");
PrintWriter pw = res.getWriter();
pw.println("<html>");
pw.println("<body>");
pw.println("<h1>登录界面</h1>");
pw.println("<form action=LoginCL method='post'>");
pw.println("用户名:<input type=text name=username><br>");
pw.println("密码:<input type=password name=passwd><br>");
pw.println("<input type=submit value=login><br>");
pw.println("</form>");
pw.println("</body>");
pw.println("</html>");
}
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
this.doGet(req, res);
}
}
package com.txj.servlet.demo;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class LoginCL extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
// 接收用户名和密码
String u = req.getParameter("username").trim();
String p = req.getParameter("passwd").trim();
// 验证
if (u.equals("txj") && p.equals("123")) {
// 合法E
// res.sendRedirect("welcome");//你要的servlet的url
res.sendRedirect("welcome1");
} else {
// 不合法,跳转
res.sendRedirect("login1");// 你要的servlet的url
}
}
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
this.doGet(req, res);
}
}
package com.txj.servlet.demo;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Welcome extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
PrintWriter pw = res.getWriter();
pw.println("Welcome to my home !!!");
}
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
this.doGet(req, res);
}
}
<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1"
metadata-complete="true">
<display-name>Tomcat Manager Application</display-name>
<description>
A scriptable management web application for the Tomcat Web Server;
Manager lets you view, load/unload/etc particular web applications.
</description>
<servlet>
<!--give servlet name 1 -->
<servlet-name>login</servlet-name>
<!--servlet track,(bao name and class name)-->
<servlet-class>com.txj.servlet.demo.Login</servlet-class>
</servlet>
<!-- Define the Manager Servlet Mapping -->
<servlet-mapping>
<servlet-name>login</servlet-name>
<!--on browser ,intput servlet's url-->
<url-pattern>/login</url-pattern>
</servlet-mapping>
<servlet>
<!--give servlet name 2 -->
<servlet-name>logincl</servlet-name>
<!--servlet track,(bao name and class name)-->
<servlet-class>com.txj.servlet.demo.LoginCL</servlet-class>
</servlet>
<!-- Define the Manager Servlet Mapping -->
<servlet-mapping>
<servlet-name>logincl</servlet-name>
<!--on browser ,intput servlet's url-->
<url-pattern>/logincl</url-pattern>
</servlet-mapping>
<servlet>
<!--give servlet name 3 -->
<servlet-name>welcome</servlet-name>
<!--servlet track,(bao name and class name)-->
<servlet-class>com.txj.servlet.demo.Welcome</servlet-class>
</servlet>
<!-- Define the Manager Servlet Mapping -->
<servlet-mapping>
<servlet-name>welcome</servlet-name>
<!--on browser ,intput servlet's url-->
<url-pattern>/welcome</url-pattern>
</servlet-mapping>
</web-app>
...全文
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帅小陶 2013-12-16
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谢谢大神们!!!
帅小陶 2013-12-16
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Thank You
改正后,结果出来了!
姜小白- 2013-12-16
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按五楼操作改，这个错误是下一个错误，当前不能跳转是5楼指出的那个问题
帅小陶 2013-12-16
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我配置welcom1 和 login1是刚才打错了
if (u.equals("txj") && p.equals("123")) {
// 合法E
res.sendRedirect("welcome");
} else { // 不合法,跳转
res.sendRedirect("login");// 你要的servlet的url
}
姜小白- 2013-12-16
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火眼金睛 都没注意到那个大小写错误 
长笛党希望 2013-12-16
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pw.println("<form action=LoginCL method='post'>");
改成
pw.println("<form action='logincl' method='post'>"); 你试试。
姜小白- 2013-12-16
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if (u.equals("txj") && p.equals("123")) {
// 合法E
// res.sendRedirect("welcome");//你要的servlet的url
res.sendRedirect("welcome1");
} else {
// 不合法,跳转
res.sendRedirect("login1");// 你要的servlet的url
}帅小陶 2013-12-16
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if (u.equals("txj") && p.equals("123")) 我就简单的直接匹配
logiincl不能起作用
不知道原因
坚果壳不是硬壳 2013-12-16
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断点调试，是不是已经取到用户名和密码了？
