简单的一个servlet

1.在web.xml中配上servlet

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
 xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <welcome-file-list>
    <welcome-file>upload/upload.jsp</welcome-file>
  </welcome-file-list>
   <servlet>
  <servlet-name>uploadFile</servlet-name>
  <servlet-class>com.shawn.UploadServlet</servlet-class>
  </servlet>
 <servlet-mapping>
  <servlet-name>uploadFile</servlet-name>
  <url-pattern>/uploadFile</url-pattern>
  </servlet-mapping>
</web-app>

2.在com.shawn.UploadServlet中写上servlet中的要素。

主要是doget,dopost

 

3.在jsp页面中，我用的是ext.

主要是action要写成 <url-pattern>/uploadFile</url-pattern>
中的。但是不能加/.

  buttons: [{
            text: 'Save',
            handler: function(){
                if(fp.getForm().isValid()){
                 fp.getForm().submit({
                     url:    'uploadFile',
                     waitMsg: 'Uploading your photo...',
                     success: function(fp, o){
                         msg('Success', 'Processed file "'+o.result.file+'" on the server');
                     }
                 });
                }
            }
        },{
            text: 'Reset',
            handler: function(){
                fp.getForm().reset();
            }
        }]