tomcat服务器设置文件下载

设置Tomcat的虚拟目录
{tomcat_home}/conf/server.xml

 <Host name="localhost"  appBase="webapps"            unpackWARs="true" autoDeploy="true">    <Context path="" docBase="examples" reloadable="true" crossContext="true">        </Context>          <!-- SingleSignOn valve, share authentication between web applications             Documentation at: /docs/config/valve.html -->        <!--        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />        -->        <!-- Access log processes all example.             Documentation at: /docs/config/valve.html             Note: The pattern used is equivalent to using pattern="common" -->        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"               prefix="localhost_access_log." suffix=".txt"               pattern="%h %l %u %t &quot;%r&quot; %s %b" />          </Host>

增加以下代码，c://download为你存放文件的路径，/download，为你在浏览器要访问的路径

<Context docBase="C://download" path="/download" reloadable="true" />  

结果

<Host name="localhost"  appBase="webapps"            unpackWARs="true" autoDeploy="true">    <Context path="" docBase="examples" reloadable="true" crossContext="true">        </Context>        <Context docBase="C://download" path="/download" reloadable="true" />          <!-- SingleSignOn valve, share authentication between web applications             Documentation at: /docs/config/valve.html -->        <!--        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />        -->        <!-- Access log processes all example.             Documentation at: /docs/config/valve.html             Note: The pattern used is equivalent to using pattern="common" -->        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"               prefix="localhost_access_log." suffix=".txt"               pattern="%h %l %u %t &quot;%r&quot; %s %b" />          </Host>

如果需要文件夹可被访问，配置web.xml，修改配置如下

 <servlet>      <servlet-name>default</servlet-name>      <servlet-class>org.apache.catalina.servlets.DefaultServlet</servlet-class>      <init-param>          <param-name>debug</param-name>          <param-value>0</param-value>      </init-param>      <init-param>          <param-name>listings</param-name>          <param-value>false</param-value>      </init-param>      <load-on-startup>1</load-on-startup>  </servlet>  

注意：上面的false改为true

ok,这就好了，访问就可以了