apache FtpServer 整合spring部署

     我们在项目中可能会出现这样的需求，使用ftp上传很大的文件后对需要对文件进行相应的逻辑处理，这时我们可以使用apache ftpServer来处理这段逻辑，只要我们做相应的部署和编写我们的逻辑代码，这样通过ftp上传的文件会自动经过ftpServer来执行我们的逻辑判断，实现我们相应的功能！ftpServer是apache提供的纯java编写的Ftp服务器，能够方便的集成到J2EE项目中。采用这种集成方式无需在服务器端配置专门的FTP服务器。至于为什么要采用FTP服务器，是应一些大数据的上传所需。下面带领大家进入FtpServer的学习之旅

1、下载相应的jar包，任选一种方式

     apache官网版本包下载：http://mina.apache.org/ftpserver-project/downloads.html

     本人博客jar包整理版下载：javascript:void(0)

2、将相应的jar包部署到我们的web projects中

3、将log4j.properties和users.properties放到我们项目的src目录下

上面只是ftp自带的一些配置

4、配置spring以及数据库连接池

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
	<!-- 读取配置文件 -->
	<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
		<property name="location" value="classpath:jdbc.properties"/>
	</bean>
	<!--  数据库连接池 -->
	<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
		<property name="driverClass">
			<value>${jdbc_driver}</value>
		</property>
		<property name="jdbcUrl">
			<value>${jdbc_url}</value>
		</property>
		<property name="user">
			<value>${jdbc_user}</value>
		</property>
		<property name="password">
			<value>${jdbc_password}</value>
		</property>
		<property name="minPoolSize">
			<value>2</value>
		</property>
		<property name="maxStatements" value="1000"></property>
		<property name="maxPoolSize" value="5"></property>
		<property name="idleConnectionTestPeriod" value="120"></property>
		<property name="maxIdleTime" value="300"></property>
	</bean>
	
	<!-- JdbcTemplate -->
	<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource">
			<ref bean="dataSource" />
		</property>
	</bean>
	
	<bean id="ftpDao" class="com.ftp.service.FtpDaoImpl">
		<property name="dataSource" ref="dataSource"></property>
	</bean>
</beans>

5、在application.xml(spring配置文件)添加Apache Ftpserver属性

<?xml version="1.0" encoding="UTF-8"?>
<server xmlns="http://mina.apache.org/ftpserver/spring/v1"
	xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="
	   http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd 
	   http://mina.apache.org/ftpserver/spring/v1 http://mina.apache.org/ftpserver/ftpserver-1.0.xsd	
	   "
	id="myServer">
	<listeners>
		<nio-listener name="default" port="21">
		    <ssl>
                <keystore file="ftpserver.jks" password="password" />
            </ssl>
		</nio-listener>
	</listeners>
	
	<ftplets>
		<ftplet name="ftpService">
			<beans:bean class="com.ftp.service.FtpService">
				<beans:property name="ftpDao" ref="ftpDao"></beans:property>
			</beans:bean>
		</ftplet>
	</ftplets>
	
	<file-user-manager file="users.properties" encrypt-passwords="clear"/>
</server>

6、编写我们的监听器，目的是操作FtpServer

package com.ftp.util;

import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;

import org.apache.ftpserver.impl.DefaultFtpServer;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.WebApplicationContextUtils;

public class FtpServerListener implements ServletContextListener {
	public void contextDestroyed(ServletContextEvent contextEvent) {
		System.out.println("Stopping FtpServer");
		DefaultFtpServer server = (DefaultFtpServer) contextEvent.getServletContext()
				.getAttribute("FTPSERVER_CONTEXT_NAME");
		if (server != null) {
			server.stop();
			contextEvent.getServletContext().removeAttribute("FTPSERVER_CONTEXT_NAME");
			System.out.println("FtpServer stopped");
		} else {
			System.out.println("No running FtpServer found");
		}
	}

	public void contextInitialized(ServletContextEvent contextEvent) {
		System.out.println("Starting FtpServer");
		WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(contextEvent.getServletContext());
		DefaultFtpServer server = (DefaultFtpServer) ctx.getBean("myServer");   
		contextEvent.getServletContext().setAttribute("FTPSERVER_CONTEXT_NAME", server);   
		try {
			server.start();
			System.out.println("FtpServer started");
		} catch (Exception e) {
			throw new RuntimeException("Failed to start FtpServer", e);
		}
	}
}

7、在web.xml中配置Spring和我们编写的监听器

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
	
  	<context-param>  
		<param-name>contextConfigLocation</param-name>  
		<param-value>classpath:applicationContext-*.xml</param-value>  
  	</context-param>  
  	
  	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
    <listener>  
    	<listener-class>com.ftp.util.FtpServerListener</listener-class>  
  	</listener>  

    <welcome-file-list>
    	<welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

这样我们的初步部署工作就完成了，如果启动不报错，说明我们配置成功!!接下来我们就要进行相应的逻辑监听处理了，见下篇文章--apache FtpServer 整合spring逻辑处理!!