我对这个设置很新。我曾经在PHP上工作，这是完全不同的（我不知道如何使用xml进行设置）。
我已经安装了Tomcat。
我有项目的.war文件并将它们粘贴到
tomact7/webapps/。我可以在
上的浏览器上查看我的页面localhost:8080/name_of_war_file
因此，.jsp页面没有任何麻烦。而servlets程序没有被执行（可能没有设置）。
例如：jsp页面中有表单操作，但它没有被调用。
tomcat7 / webapps中的文件夹结构：
Folder structure（在WEB-INF / classes / com / voting / dao，servelet，update等内部有很少
.class个文件）
请注意.class个文件，而不是.java
以下是web.xml文件的内容
<?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/javaeehttp://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
id="WebApp_ID" version="3.0">
<display-name>VotingBallot</display-name>
<context-param>
<description>Location to store uploaded file</description>
<param-name>proof-upload</param-name>
<param-value>C:\tmp\</param-value>
</context-param>
<servlet>
<servlet-name>Init</servlet-name>
<servlet-class>com.voting.servlet.InitServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>Reg</servlet-name>
<servlet-class>com.voting.servlet.RegisterServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Reg</servlet-name>
<url-pattern>/register</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Reg2</servlet-name>
<servlet-class>com.voting.servlet.Register2Servlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Reg2</servlet-name>
<url-pattern>/register2</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Login</servlet-name>
<servlet-class>com.voting.servlet.LoginServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Login</servlet-name>
<url-pattern>/login</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Login2</servlet-name>
<servlet-class>com.voting.servlet.Login2Servlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Login2</servlet-name>
<url-pattern>/login2</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>Logout</servlet-name>
<servlet-class>com.voting.servlet.LogoutServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Logout</servlet-name>
<url-pattern>/logout</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>electionList</servlet-name>
<servlet-class>com.voting.servlet.ElectionListServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>electionList</servlet-name>
<url-pattern>/electionList</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>votenow</servlet-name>
<servlet-class>com.voting.servlet.VoteNowServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>votenow</servlet-name>
<url-pattern>/votenow</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>vote</servlet-name>
<servlet-class>com.voting.servlet.VoteServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>vote</servlet-name>
<url-pattern>/vote</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>resultList</servlet-name>
<servlet-class>com.voting.servlet.ResultListServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>resultList</servlet-name>
<url-pattern>/resultList</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>results</servlet-name>
<servlet-class>com.voting.servlet.ResultsServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>results</servlet-name>
<url-pattern>/results</url-pattern>
</servlet-mapping>
<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>
此外，除了webapps / ROOT / META-INF之外，还有context.xml
<Context path="/"
antiResourceLocking="false" >
<Resource name="jdbc/voterdb" auth="Container" type="javax.sql.DataSource"
maxActive="100" maxIdle="30" maxWait="10000"
username="root" password="arun" driverClassName="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:8080/VotingBallot/"/>
</Context>
我有Java EE Eclipse，tomcat7，phpmyadmin作为DB查看器，能够查看jsp页面。
我希望能得到一些帮助。如果我在任何地方出错，我很抱歉。更多细节，我准备好了。
编辑： 这是表单操作代码段：
<%
String res = request.getParameter("res");
if (res != null && res.equals("fail")) {
%>
<h3>Something went wrong. Please try again later.</h3>
<%
} else if (res != null && res.equals("new")) {
%>
<h3>EC Admin haven't approved your application yet. You will
not be able to access this portal by this time.</h3>
<%
} else if (res != null && res.equals("rejected")) {
%>
<h3>Your application has been disabled by EC Admin. You will
not be able to access this portal anymore.</h3>
<%
} else if (res != null && res.equals("approved")) {
%>
<h3>
You have already been registered and your application is approved.
You can login <a href='login.jsp'>here</a>.
</h3>
<%
}
%>
<header>
<h2>Voter Registration Form</h2>
<p>All the fields are mandatory. .</p>
</header>
<form action='register' method=post id='reg'>
<label> Enter your email: </label> <input type=text name='email' /><br>
<label>Enter password:</label> <input type=password name='pw' /> <br>
<label>Enter First name: </label> <input type=text name='fn' /><br>
<label>Enter Last name:</label> <input type=text name='ln' /> <br>
<label>Select Gender:</label> <select name='gen'>
<option value='Male'>Male</option>
<option value='Female'>Female</option>
</select> <br> <br> <label>Enter Date of Birth</label> <input
type=date name='dob' /> <br> <br> <label>Enter
Mobile number</label> <input type=text name='mobile' /> <br> <label>
Chose your assembly </label> <select name='assembly'>
<option value="Mysore">Mysore</option>
<option value="Bangalore">Bangalore</option>
<option value="Hassan">Hassan</option>
</select> <br> <br> <input type=submit value='PROCEED >>' /> <br>
<br>
</form>