文章目录

• • 1.FastDFS安装
  • 2.修改pom.xml，引入依赖
  • 3.项目使用

1.FastDFS安装

docker镜像拉取

docker pull morunchang/fastdfs

运行docker

docker run ‐d ‐‐name tracker ‐‐net=host morunchang/fastdfs sh tracker.sh

运行storage

docker run ‐d ‐‐name storage ‐‐net=host ‐e TRACKER_IP=<your tracker
server address>:22122 ‐e GROUP_NAME=<group name> morunchang/fastdfs sh
storage.sh

使用的网络模式是–net=host, 替换为你机器的Ip即可
是组名，即storage的组
如果想要增加新的storage服务器，再次运行该命令，注意更换 新组名
修改nginx的配置
进入storage的容器内部，修改nginx.conf

docker exec ‐it storage /bin/bash

进入后

vi /data/nginx/conf/nginx.conf

添加以下内容

location /group1/M00 {
proxy_next_upstream http_502 http_504 error timeout invalid_header;
proxy_cache http‐cache;
proxy_cache_valid 200 304 12h;
proxy_cache_key $uri$is_args$args;
proxy_pass http://fdfs_group1;
expires 30d;
}

退出容器

exit

重启

docker restart storage

2.修改pom.xml，引入依赖

 <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>net.oschina.zcx7878</groupId>
            <artifactId>fastdfs-client-java</artifactId>
            <version>1.27.0.0</version>
        </dependency>
        <dependency>
            <groupId>com.changgou</groupId>
            <artifactId>changgou_common</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
    </dependencies>

在resources文件夹下创建fasfDFS的配置文件fdfs_client.conf

connect_timeout = 60
network_timeout = 60
charset = UTF‐8
http.tracker_http_port = 8080
tracker_server = 192.168.200.128:22122

在resources文件夹下创建application.yml

spring:
servlet:
multipart:
max‐file‐size: 10MB
max‐request‐size: 10MB
server:
port: 9008
eureka:
client:
service‐url:
defaultZone: http://127.0.0.1:6868/eureka
instance:
prefer‐ip‐address: true
feign:
hystrix:
enabled: true

3.项目使用

package com.changgou.file.util;

public class FastDFSFile {
    //文件名字
    private String name;
    //文件内容
    private byte[] content;
    //文件扩展名
    private String ext;
    //文件MD5摘要值
    private String md5;
    //文件创建作者
    private String author;

    public FastDFSFile(String name, byte[] content, String ext, String height,
                       String width, String author) {
        super();
        this.name = name;
        this.content = content;
        this.ext = ext;
        this.author = author;
    }

    public FastDFSFile(String name, byte[] content, String ext) {
        super();
        this.name = name;
        this.content = content;
        this.ext = ext;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public byte[] getContent() {
        return content;
    }

    public void setContent(byte[] content) {
        this.content = content;
    }

    public String getExt() {
        return ext;
    }

    public void setExt(String ext) {
        this.ext = ext;
    }

    public String getMd5() {
        return md5;
    }

    public void setMd5(String md5) {
        this.md5 = md5;
    }

    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = author;
    }
}

上传、下载、删除工具类

package com.changgou.file.util;

import org.csource.common.NameValuePair;
import org.csource.fastdfs.*;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

public class FastDFSClient {

    private static org.slf4j.Logger logger = LoggerFactory.getLogger(FastDFSClient.class);

    /***
     * 初始化加载FastDFS的TrackerServer配置
     */
    static {
        try {
            String filePath = new ClassPathResource("fdfs_client.conf").getFile().getAbsolutePath();
            ClientGlobal.init(filePath);
        } catch (Exception e) {
            logger.error("FastDFS Client Init Fail!",e);
        }
    }

    /***
     * 文件上传
     * @param file
     * @return
     */
    public static String[] upload(FastDFSFile file) {
        //获取文件的作者
        NameValuePair[] meta_list = new NameValuePair[1];
        meta_list[0] = new NameValuePair("author", file.getAuthor());

        //接收返回数据
        String[] uploadResults = null;
        StorageClient storageClient=null;
        try {
            //创建StorageClient客户端对象
            storageClient = getTrackerClient();

            /***
             * 文件上传
             * 1)文件字节数组
             * 2)文件扩展名
             * 3)文件作者
             */
            uploadResults = storageClient.upload_file(file.getContent(), file.getExt(), meta_list);
        } catch (Exception e) {
            logger.error("Exception when uploadind the file:" + file.getName(), e);
        }

        if (uploadResults == null && storageClient!=null) {
            logger.error("upload file fail, error code:" + storageClient.getErrorCode());
        }
        //获取组名
        String groupName = uploadResults[0];
        //获取文件存储路径
        String remoteFileName = uploadResults[1];
        return uploadResults;
    }

    /***
     * 获取文件信息
     * @param groupName:组名
     * @param remoteFileName：文件存储完整名
     * @return
     */
    public static FileInfo getFile(String groupName, String remoteFileName) {
        try {
            StorageClient storageClient = getTrackerClient();
            return storageClient.get_file_info(groupName, remoteFileName);
        } catch (Exception e) {
            logger.error("Exception: Get File from Fast DFS failed", e);
        }
        return null;
    }

    /***
     * 文件下载
     * @param groupName
     * @param remoteFileName
     * @return
     */
    public static InputStream downFile(String groupName, String remoteFileName) {
        try {
            //创建StorageClient
            StorageClient storageClient = getTrackerClient();

            //下载文件
            byte[] fileByte = storageClient.download_file(groupName, remoteFileName);
            InputStream ins = new ByteArrayInputStream(fileByte);
            return ins;
        } catch (Exception e) {
            logger.error("Exception: Get File from Fast DFS failed", e);
        }
        return null;
    }

    /***
     * 文件删除
     * @param groupName
     * @param remoteFileName
     * @throws Exception
     */
    public static void deleteFile(String groupName, String remoteFileName)
            throws Exception {
        //创建StorageClient
        StorageClient storageClient = getTrackerClient();

        //删除文件
        int i = storageClient.delete_file(groupName, remoteFileName);
    }

    /***
     * 获取Storage组
     * @param groupName
     * @return
     * @throws IOException
     */
    public static StorageServer[] getStoreStorages(String groupName)
            throws IOException {
        //创建TrackerClient
        TrackerClient trackerClient = new TrackerClient();
        //获取TrackerServer
        TrackerServer trackerServer = trackerClient.getConnection();
        //获取Storage组
        return trackerClient.getStoreStorages(trackerServer, groupName);
    }

    /***
     * 获取Storage信息,IP和端口
     * @param groupName
     * @param remoteFileName
     * @return
     * @throws IOException
     */
    public static ServerInfo[] getFetchStorages(String groupName,
                                                String remoteFileName) throws IOException {
        TrackerClient trackerClient = new TrackerClient();
        TrackerServer trackerServer = trackerClient.getConnection();
        return trackerClient.getFetchStorages(trackerServer, groupName, remoteFileName);
    }

    /***
     * 获取Tracker服务地址
     * @return
     * @throws IOException
     */
    public static String getTrackerUrl() throws IOException {
        return "http://"+getTrackerServer().getInetSocketAddress().getHostString()+":"+ClientGlobal.getG_tracker_http_port()+"/";
    }

    /***
     * 获取Storage客户端
     * @return
     * @throws IOException
     */
    private static StorageClient getTrackerClient() throws IOException {
        TrackerServer trackerServer = getTrackerServer();
        StorageClient storageClient = new StorageClient(trackerServer, null);
        return  storageClient;
    }

    /***
     * 获取Tracker
     * @return
     * @throws IOException
     */
    private static TrackerServer getTrackerServer() throws IOException {
        TrackerClient trackerClient = new TrackerClient();
        TrackerServer trackerServer = trackerClient.getConnection();
        return  trackerServer;
    }
}

上传代码

  @PostMapping("/upload")
    public Result upload(@RequestParam("file") MultipartFile file) {
        try {
            //判断文件是否为空
            if (file == null) {
                throw new RuntimeException("文件不存在");
            }
            //获取文件名
            String originalFilename = file.getOriginalFilename();
            if (StringUtils.isEmpty(originalFilename)) { //判断名称是否为空
                throw new RuntimeException("文件名为空");
            }
            //获取扩展名称
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            //获取内容
            byte[] content = file.getBytes();
            //封装内容
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename, content, extName);
            //上传文件
            String[] uploadResult = FastDFSClient.upload(fastDFSFile);
            String url = FastDFSClient.getTrackerUrl() + "/" + uploadResult[0] + "/" + uploadResult[1];
            return new Result(true, StatusCode.OK, "文件上传成功", url);
        } catch (Exception e) {
            e.printStackTrace();
        }

        return new Result(false, StatusCode.ERROR, "文件上传失败");
    }
}