您缺少
<servlet>...</servlet>标记，这对于映射很重要。因此，使用以下命令：
<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"><display-name>EmployeeManagement</display-name><welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file></welcome-file-list><context-param> <param-name>name</param-name> <param-value>Pramod</param-value></context-param><servlet> <servlet-name>Registration</servlet-name> <servlet-class>com.yourPackageName.yourServletName</servlet-class></servlet><servlet-mapping> <servlet-name>Registration</servlet-name> <url-pattern>/EmployeeManagement/WebContent/Registration</url-pattern></servlet-mapping></web-app>
并且您应该
action像下面这样在表单上赋予价值：
<form action="/EmployeeManagement/WebContent/Registration" method="post"> //Some pre here</form>
并记下所有值在以下代码中区分大小写：
<servlet> <servlet-name>Registration</servlet-name> <servlet-class>com.yourPackageName.yourServletName</servlet-class></servlet><servlet-mapping> <servlet-name>Registration</servlet-name> <url-pattern>/EmployeeManagement/WebContent/Registration</url-pattern></servlet-mapping>
您的servlet名称
Registration在两个标签上应该相同
<servlet>...</servlet>，
<servlet-mapping>...</servlet-mapping>并且
package名称也应该与servlet类所在的位置相同。
