FASTDFS轻量级分布式文件系统快速上手(提供工具栏全套代码配置)

百度百科介绍
FastDFS是一个C语言编写的开源的轻量级分布式文件系统，它对文件进行管理，功能包括：文件存储、文件同步、文件访问（文件上传、文件下载）等，解决了大容量存储和负载均衡(https://baike.baidu.com/item/%E8%B4%9F%E8%BD%BD%E5%9D%87%E8%A1%A1/932451)的问题。特别适合以文件为载体的在线服务，如相册网站、视频网站等等。

FastDFS为互联网量身定制，充分考虑了冗余备份、负载均衡、线性扩容等机制，并注重高可用、高性能等指标，使用FastDFS很容易搭建一套高性能文件服务器集群提供文件上传、下载等服务。

一 FastDFS介绍

FastDFS架构包括Tracker server和Storage server。
客户端请求Tracker server进行文件上传、下载，通过Tracker server调度最终由Storage server完成文件上传和下载。

• Tracker server作用是负载均衡和调度，通过Tracker server在文件上传时可以根据一些策略找到Storage server提供文件上传服务。可以将tracker称为追踪服务器或调度服务器。

• storage server作用是文件存储，客户端上传的文件最终存储在Storage 服务器上

storageserver没有实现自己的文件系统而是利用操作系统的文件系统来管理文件。可以将storage称为存储服务器。

FASTDFS系统架构图

FASTDFS服务端两个角色：

Tracker:管理集群，tracker也可以实现集群。每个tracker节点地位平等.收集Storage集群的状态。
Storage：实际保存文件 storage分为多个组，每个组之间保存的文件是不同的。每个组内部可以有多个成员，组成员内部保存的内容是一致的，组成员的地位是一致的，没有主从的概念。

ps这里说一下,做上传时候我们有时候会需要做一些格式转化可能遇到MockMultipartFile和我们springboot2.x的版本不兼容问题

Configuration property name 'fdfs.thumbImage' is not valid:


    Invalid characters: 'I'
    Bean: pictureController

    Reason: Canonical names should be kebab-case ('-' separated), lowercase alpha-numeric characters and must start with a letter


Action:
Modify 'fdfs.thumbImage' so that it conforms to the canonical names requirements.

这里我推荐springboot2.0以上用户可以使用解决

       
            com.github.tobato
            fastdfs-client
            1.26.1-RELEASE
        

关于FASTDFS的使用

这里背景是我的cenos ip为http://192.168.25.133/,不到测试不开,咱也不怕你攻击

粮草未到兵马先行,先说一下准备工作

applicatio.properties

#临时文件保存目录
hcat.tmpdir=D:/temp


#整合FASTDFS
fdfs.soTimeout=1501
fdfs.connectTimeout=601 
#缩略图生成参数
fdfs.thumbImage.width=150
fdfs.thumbImage.height=150
#TrackerList参数,支持多个
fdfs.trackerList[0]=192.168.25.133:22122

#HTTP URL
fdfs.httpurl=http://192.168.25.133/

pom maven配置

 
        
            com.github.tobato
            fastdfs-client
            1.26.1-RELEASE
        
        
            org.springframework
            spring-test
            RELEASE
        
        
            com.alibaba
            fastjson
            1.2.28
        

1.ComponetImport

package com.zyh.future.util;

import com.github.tobato.fastdfs.FdfsClientConfig;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableMBeanExport;
import org.springframework.context.annotation.Import;
import org.springframework.jmx.support.RegistrationPolicy;

/**
 * 导入FastDFS-Client组件
 *
 * @author tobato
 *
 */
@Configuration
@Import(FdfsClientConfig.class)
// 解决jmx重复注册bean的问题
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
public class ComponetImport {
}

2.FastDFSClient

package com.zyh.future.util;

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.Charset;

import com.github.tobato.fastdfs.domain.StorePath;
import com.github.tobato.fastdfs.exception.FdfsUnsupportStorePathException;
import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

@Component
public class FastDFSClient {

    @Autowired
    private FastFileStorageClient storageClient;

//  @Autowired
//  private AppConfig appConfig; // 项目参数配置

    /**
     * 上传文件
     * 
     * @param file
     *            文件对象
     * @return 文件访问地址
     * @throws IOException
     */
    public String uploadFile(MultipartFile file) throws IOException {
        StorePath storePath = storageClient.uploadFile(file.getInputStream(), file.getSize(),
                FilenameUtils.getExtension(file.getOriginalFilename()), null);

        return storePath.getGroup() + "/" + storePath.getPath();
    }

    public String uploadFile(File file) throws IOException {
        StorePath storePath = storageClient.uploadFile(new FileInputStream(file), FileUtils.sizeOf(file),
                FilenameUtils.getExtension(file.getName()), null);

        return storePath.getGroup() + "/" + storePath.getPath();
    }
    
    public String uploadFile2(MultipartFile file) throws IOException {
        StorePath storePath = storageClient.uploadImageAndCrtThumbImage(file.getInputStream(), file.getSize(),
                FilenameUtils.getExtension(file.getOriginalFilename()), null);

        return storePath.getGroup() + "/" + storePath.getPath();
    }
    
    public String uploadQRCode(MultipartFile file) throws IOException {
        StorePath storePath = storageClient.uploadFile(file.getInputStream(), file.getSize(),
                "png", null);
        
        return storePath.getGroup() + "/" + storePath.getPath();
    }
    
    public String uploadFace(MultipartFile file) throws IOException {
        StorePath storePath = storageClient.uploadImageAndCrtThumbImage(file.getInputStream(), file.getSize(),
                "png", null);
        
        return storePath.getGroup() + "/" + storePath.getPath();
    }
    
    public String uploadBase64(MultipartFile file) throws IOException {
        StorePath storePath = storageClient.uploadImageAndCrtThumbImage(file.getInputStream(), file.getSize(),
                "png", null);
        
        return storePath.getGroup() + "/" + storePath.getPath();
    }
    
    /**
     * 将一段字符串生成一个文件上传
     * 
     * @param content
     *            文件内容
     * @param fileExtension
     * @return
     */
    public String uploadFile(String content, String fileExtension) {
        byte[] buff = content.getBytes(Charset.forName("UTF-8"));
        ByteArrayInputStream stream = new ByteArrayInputStream(buff);
        StorePath storePath = storageClient.uploadFile(stream, buff.length, fileExtension, null);
        return storePath.getGroup() + "/" + storePath.getPath();
    }

    // 封装图片完整URL地址
//  private String getResAccessUrl(StorePath storePath) {
//      String fileUrl = AppConstants.HTTP_PRODOCOL + appConfig.getResHost() + ":" + appConfig.getFdfsStoragePort()
//              + "/" + storePath.getFullPath();
//      return fileUrl;
//  }

    /**
     * 删除文件
     * 
     * @param fileUrl
     *            文件访问地址
     * @return
     */
    public void deleteFile(String fileUrl) {
        if (StringUtils.isEmpty(fileUrl)) {
            return;
        }
        try {
            StorePath storePath = StorePath.praseFromUrl(fileUrl);
            storageClient.deleteFile(storePath.getGroup(), storePath.getPath());
        } catch (FdfsUnsupportStorePathException e) {
            e.getMessage();
        }
    }
}

3.FileUtils

package com.zyh.future.util;

import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

import org.springframework.mock.web.MockMultipartFile;
import org.springframework.stereotype.Service;
import org.springframework.util.Base64Utils;
import org.springframework.web.multipart.MultipartFile;

@Service
public class FileUtils {
    /**
     * 根据url拿取file
     * 
     * @param url
     * @param suffix
     *            文件后缀名
     */
    public static File createFileByUrl(String url, String suffix) {
        byte[] byteFile = getImageFromNetByUrl(url);
        if (byteFile != null) {
            File file = getFileFromBytes(byteFile, suffix);
            return file;
        } else {
            return null;
        }
    }

    /**
     * 根据地址获得数据的字节流
     * 
     * @param strUrl
     *            网络连接地址
     * @return
     */
    private static byte[] getImageFromNetByUrl(String strUrl) {
        try {
            URL url = new URL(strUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5 * 1000);
            InputStream inStream = conn.getInputStream();// 通过输入流获取图片数据
            byte[] btImg = readInputStream(inStream);// 得到图片的二进制数据
            return btImg;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    /**
     * 从输入流中获取数据
     * 
     * @param inStream
     *            输入流
     * @return
     * @throws Exception
     */
    private static byte[] readInputStream(InputStream inStream) throws Exception {
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        byte[] buffer = new byte[1024];
        int len = 0;
        while ((len = inStream.read(buffer)) != -1) {
            outStream.write(buffer, 0, len);
        }
        inStream.close();
        return outStream.toByteArray();
    }

    // 创建临时文件
    private static File getFileFromBytes(byte[] b, String suffix) {
        BufferedOutputStream stream = null;
        File file = null;
        try {
            file = File.createTempFile("pattern", "." + suffix);
            System.out.println("临时文件位置：" + file.getCanonicalPath());
            FileOutputStream fstream = new FileOutputStream(file);
            stream = new BufferedOutputStream(fstream);
            stream.write(b);
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (stream != null) {
                try {
                    stream.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return file;
    }

    public static MultipartFile createImg(String url) {
        try {
            // File转换成MutipartFile
            File file = FileUtils.createFileByUrl(url, "jpg");
            FileInputStream inputStream = new FileInputStream(file);
            MultipartFile multipartFile = new MockMultipartFile(file.getName(), inputStream);
            return multipartFile;
        } catch (IOException e) {
            e.printStackTrace();
            return null;
        }
    }

    public static MultipartFile fileToMultipart(String filePath) {
        try {
            // File转换成MutipartFile
            File file = new File(filePath);
            FileInputStream inputStream = new FileInputStream(file);
            MultipartFile multipartFile = new MockMultipartFile(file.getName(), "png", "image/png", inputStream);
            return multipartFile;
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return null;
        }
    }

    public static void main(String[] args) {
        // WebFileUtils.createFileByUrl("http://122.152.205.72:88/group1/M00/00/01/CpoxxFr7oIaAZ0rOAAC0d3GKDio580.png",
        // "png");
        // WebFileUtils.createImg("http://122.152.205.72:88/group1/M00/00/01/CpoxxFr7oIaAZ0rOAAC0d3GKDio580.png");
    }

    public static boolean base64ToFile(String filePath, String base64Data)  throws Exception {
        String dataPrix = "";
        String data = "";
        
        if(base64Data == null || "".equals(base64Data)){
            return false;
        }else{
            String [] d = base64Data.split("base64,");
            if(d != null && d.length == 2){
                dataPrix = d[0];
                data = d[1];
            }else{
                return false;
            }
        }

        // 因为BASE64Decoder的jar问题，此处使用spring框架提供的工具包
        byte[] bs = Base64Utils.decodeFromString(data);
        // 使用apache提供的工具类操作流
        org.apache.commons.io.FileUtils.writeByteArrayToFile(new File(filePath), bs);
        
        return true;
    }
}