fastdfs客户端上传和下载文件

一、项目结构

二、pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.example</groupId>
    <artifactId>A01fastdfs</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/net.oschina.zcx7878/fastdfs-client-java -->
        <dependency>
            <groupId>net.oschina.zcx7878</groupId>
            <artifactId>fastdfs-client-java</artifactId>
            <version>1.27.0.0</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-io -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-io</artifactId>
            <version>1.3.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.9</source>
                    <target>1.9</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

三、fastdfs-client.properties

#http连接超时时间
fastdfs.connect_timeout_in_seconds=5
#tracker和storage网络通信超时时间
fastdfs.network_timeout_in_seconds=30
#字符编码
fastdfs.charset=utf-8
#tracker服务器地址，多个地址中间用英文逗号分隔
fastdfs.tracker_servers=192.168.2.105:22122

四、测试 

package com.wuxi.test;

import org.csource.fastdfs.*;
import org.junit.Test;

import java.io.File;
import java.io.FileOutputStream;

public class MyTest {
    //上传文件
    @Test
    public void testUpload() {
        try {
            //加载fastdfs-client.properties配置文件
            ClientGlobal.initByProperties("config/fastdfs-client.properties");
            //定义TrackerClient，用于请求TrackerServer
            TrackerClient trackerClient = new TrackerClient();
            //连接tracker
            TrackerServer trackerServer = trackerClient.getConnection();
            //获取storage
            StorageServer storeStorage = trackerClient.getStoreStorage(trackerServer);
            //创建storageClient
            StorageClient1 storageClient1 = new StorageClient1(trackerServer, storeStorage);
            //向storage服务器上传文件
            //本地文件的路径
            String path = "F:/java/resource/data.txt";
            //上传成功后拿到文件Id
            String fileId = storageClient1.upload_file1(path, "txt", null);
            System.out.println(fileId);//group1/M00/00/00/wKgCaV9vaSaARBTKAAAAGjJpL2g017.txt
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    //下载文件
    @Test
    public void testDownload() {
        try {
            //加载fastdfs-client.properties配置文件
            ClientGlobal.initByProperties("config/fastdfs-client.properties");
            //定义TrackerClient，用于请求TrackerServer
            TrackerClient trackerClient = new TrackerClient();
            //连接tracker
            TrackerServer trackerServer = trackerClient.getConnection();
            //获取storage
            StorageServer storeStorage = trackerClient.getStoreStorage(trackerServer);
            //创建storageClient
            StorageClient1 storageClient1 = new StorageClient1(trackerServer, storeStorage);
            //下载文件
            //文件id
            String fileId = "group1/M00/00/00/wKgCaV9vaSaARBTKAAAAGjJpL2g017.txt";
            byte[] bytes = storageClient1.download_file1(fileId);
            //使用输出流保存文件
            FileOutputStream fileOutputStream = new FileOutputStream(new File("F:/data.txt"));
            fileOutputStream.write(bytes);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}