Nginx+Tomcat+FastDFS文件下载模块讲解
本文主要以示例的方式讲解，如何简单快速的搭建一个nginx+tomcat结合FastDFS文件系统，进行文件下载的文章，Nginx可以直接配置FastDFS下载，由于在实战中用处不是很大，所以暂时不讲。1、首先下载nginx安装包，解压并运行。
关于nginx的安装详看http://flychao88.iyunv.com/blog/1963365一文。
关于nginx.conf文件的内容如下所示：
#usernobody;
worker_processes2;
#error_loglogs/error.log;
#error_loglogs/error.lognotice;
#error_loglogs/error.loginfo;
#pid logs/nginx.pid;
events {
worker_connections1024;
}
http {
include mime.types;
default_typeapplication/octet-stream;
sendfile on;
#tcp_nopush on;
access_loglogs/access.log;
keepalive_timeout65;
# gzipon;
server {
listen 80;
server_name aa.bb.com;
location / {
proxy_connect_timeout 3;
proxy_send_timeout 30;
proxy_read_timeout 30;
proxy_pass http://localhost;
}
}
upstream localhost {
server localhost:8080 weight=10;
server localhost:8081 weight=10;
}
注：proxy_pass后面的url域名必须要和upstream后面的标识保持一致。
2、下载并配置二个tomcat，配置tomcat端口号为：8080和8081
3、下载并安装FastDFS。
具体请参见http://flychao88.iyunv.com/blog/1725285
4、配置spring文件如下：
<bean class="com.jd.fastdfs.Configuration" id="configuration"/>
<bean id="trackerGroup" class="com.jd.fastdfs.TrackerGroup">
<property name="configuration" ref="configuration"/>
<property name="trackerServers">
<list value-type="java.lang.String">
<value>10.12.146.90:22122</value>
</list>
</property>
</bean>
<bean id="fastdfsHelper" class="com.jd.fastdfs.FastdfsHelper">
<property name="trackerGroup" ref="trackerGroup" />
</bean>
5、配置struts.xml 文件。
<action name="oper_*"class="fastDFSclientAction" method="{1}">
<result name="success" type="velocity">/pages/upload.vm</result>
<result name="downLoad" type="stream">
<param name="contentType">application/x-zip-compressed</param>
<param name="contentDisposition">attachment;filename="${fileName}"</param>
<param name="inputName">downLoadFile</param>
</result>
</action>
6、开发Action类，代码如下：
package com.jd.paysettle.action;
import com.jd.common.struts.action.BaseAction;
import com.jd.common.web.result.Result;
import com.jd.fastdfs.FastdfsHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
/**
* User: root
* Date: 13-10-28
* Time: 上午3:59
*/
public class FastDFSClientAction extends BaseAction {
private static final long serialVersionUID = -5163525262758695901L;
private static final Logger log = LoggerFactory.getLogger(RefundAuditAction.class);
@Autowired
private FastdfsHelper fastdfsHelper;
private String fileUrl = "";
private InputStream downLoadFile;
private String fileName;
public String update() throws Exception {
String[] uploadFile = fastdfsHelper.upload("group1","/root/FastDFS_v4.05.tar.gz");
fileUrl = uploadFile;
Result result = new Result();
result.addDefaultModel("fileUrl", fileUrl);
toVm(result);
return SUCCESS;
}
public String download() throws Exception {
byte[] bytes = fastdfsHelper.download("group1",fileUrl);
downLoadFile = new ByteArrayInputStream(bytes);
fileName = "fastdfs"+System.currentTimeMillis()+".tar.tz";
return "downLoad";
}
public InputStream getDownLoadFile() {
return downLoadFile;
}
public void setDownLoadFile(InputStream downLoadFile) {
this.downLoadFile = downLoadFile;
}
public String getFileName() {
return fileName;
}
public void setFileName(String fileName) {
this.fileName = fileName;
}
public String getFileUrl() {
return fileUrl;
}
public void setFileUrl(String fileUrl) {
this.fileUrl = fileUrl;
}
}
7、HTML页面内容如下：
<body>
<br><br>upload file is :
<a href="/paysettle/oper_download.action?fileUrl=${fileUrl}">${fileUrl}</a>
</body>
8、结果如下：
关于JAVA版的FastDFS客户端，本人已经封装完毕，如果有哪位朋友需要，可以单独找我。
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