tomcat服务器未加载web.xml it'；s运行jsp'；它不是servlet
我已经通过cpanel在运行Tomcat7.0的实时服务器上部署了Java Web应用程序，它可以很好地处理.jsp页面。似乎它没有加载web.xml文件，所以它没有映射servlet 我已经在本地服务器上对我的应用程序进行了全面测试。 下面是Web.xml文件tomcat服务器未加载web.xml it'；s运行jsp'；它不是servlet,jsp,tomcat,servlets,web.xml,Jsp,Tomcat,Servlets,Web.xml,我已经通过cpanel在运行Tomcat7.0的实时服务器上部署了Java Web应用程序，它可以很好地处理.jsp页面。似乎它没有加载web.xml文件，所以它没有映射servlet 我已经在本地服务器上对我的应用程序进行了全面测试。 下面是Web.xml文件 <?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>ProcessLogin</servlet-name>
<servlet-class>authentication.ProcessLogin</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ProcessLogin</servlet-name>
<url-pattern>/Welcome</url-pattern>
</servlet-mapping>
</web-app>
我花了十几个小时搜索这个问题，但找不到解决方案。web.xml正在正确加载，因为执行了JSP文件。您不需要在web.xml中声明servlet，因为您正在使用注释并在web.xml中声明servlet 3.0，您会遇到什么错误？提交时，浏览器URL中的上下文路径是否更改？示例：>？是的，在localhost中，它工作正常，contextPath更改，但在Onlinet中不起作用。请看一看：上下文路径仍在更改，但它找不到文件。
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Login Here</title>
<link rel="stylesheet" type="text/css" href="main.css">
</head>
<body>
<div class="header">
...
</div>
<div class="container" style="height:85%">
<div class="contents">
<form name="form1" id="form1" method="post" action="Welcome" >
User Name: <input type="text" name="txtName" id="txtName" required class="txtfield"> <br />
Password:<input type="password" size="50" name="txtPass" required class="txtfield" /> <br />
<input type="submit" value="Sign In" />
</form>
</div>
</div>
<div class="footer">
....
</div>
</body>
</html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Student Management</title>
<link rel="stylesheet" type="text/css" href="main.css">
<script src="library/jquery-1.9.1.js"></script>
</head>
<body>
<div class="container" style="height:84%">
<div class="contents" style="margin:0 auto; width:650px">
Welcome dear:
</div>
</div>
<div class="footer">
...
</div>
</body>
</html>
package authentication;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import utilities.User;
@WebServlet(name = "ProcessLogin", urlPatterns = {"/Welcome"})
public class ProcessLogin extends HttpServlet {
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
User user = new User();
String userName = request.getParameter("txtName");
String password = request.getParameter("txtPass");
boolean isUser = user.checkUser(userName,password);
if (isUser) {
HttpSession session = request.getSession();
session.setAttribute("userId", userName);
RequestDispatcher rd = request.getRequestDispatcher("index.jsp");
rd.forward(request, response);
} else {
response.sendRedirect("login.jsp?err=1");
}
} finally {
out.close();
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
}