jsp+java类+servlet实现文件读取、写入的功能(三)

本文是根据tomcat平台下实现而做，文件目录为：
 tom_homewebapps
ews下:
└html
└WEB-INF
└classes
   └com
      └FileMan.class
      └FileServlet.class
 └web.xml
下面开始修改web.xml令filesevelet生效/*
       <?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
    PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
    "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
  <display-name>Welcome to Tomcat</display-name>
  <description>
     Welcome to Tomcat
  </description>
<!-- JSPC servlet mappings start -->
    <servlet>
        <servlet-name>org.apache.jsp.index_jsp</servlet-name>
        <servlet-class>org.apache.jsp.index_jsp</servlet-class>
    </servlet>

        <servlet-mapping>
        <servlet-name>org.apache.jsp.index_jsp</servlet-name>
        <url-pattern>/index.jsp</url-pattern>
    </servlet-mapping>
        <servlet>
        <servlet-name>FileServlet</servlet-name>
        <servlet-class>com.FileServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>FileServlet</servlet-name>
        <url-pattern>/servlet/FileServlet</url-pattern>
    </servlet-mapping>
<!-- JSPC servlet mappings end -->
</web-app>
在浏览器中输入：http://localhost:8080/news/servlet/FileServlet
OK，出现以下面面：同时 在newshtml下可以找到test.htm，OK，成功!