fastDFS 上传 java源码

要想搭建fastDFS网上有相近的文章：

 分布式文件系统 - FastDFS 在 CentOS 下配置安装部署

分布式文件系统 - FastDFS 配置 Nginx 模块及上传测试

首先下载fastdfs-client-java  jar包，我是下载fastdfs-client-java源码，自己打的jar包，fastdfs-client-java源码

首先创建java项目

创建fdfs_client.conf文件

connect_timeout = 2

network_timeout = 30

charset = UTF-8

http.tracker_http_port = 80
http.anti_steal_token = no

http.secret_key = FastDFS1234567890

tracker_server = 192.168.206.139:22122  #对应自己的tracker服务IP地址

这里只测试了上传一张图片，然后下载这张图片

具体java代码：

import java.io.FileOutputStream;
import java.io.IOException;
import java.util.UUID;

import org.apache.commons.io.IOUtils;
import org.csource.common.MyException;
import org.csource.fastdfs.ClientGlobal;
import org.csource.fastdfs.StorageClient;
import org.csource.fastdfs.StorageServer;
import org.csource.fastdfs.TrackerClient;
import org.csource.fastdfs.TrackerServer;
import org.junit.Test;


public class FastDFS {

    @Test
    public void upload(){
        try {// 初始化全局配置。加载一个配置文件。
            ClientGlobal.init("D:\workspace-12306\Test\src\test\resources\fdfs_client.conf");
            // 创建一个TrackerClient对象。
            TrackerClient trackerClient = new TrackerClient();
            // 创建一个TrackerServer对象。
            TrackerServer trackerServer = trackerClient.getConnection();
            // 声明一个StorageServer对象，null。
            StorageServer storageServer = null;
            // 获得StorageClient对象。
            StorageClient storageClient = new StorageClient(trackerServer, storageServer);
            // 直接调用StorageClient对象方法上传文件即可。
            String[] strings;
            strings = storageClient.upload_file("D:\1.jpg", "jpg", null);
            for (String string : strings) {
                System.out.println(string);
            }
        } catch (IOException e) {
            e.printStackTrace();
        } catch (MyException e) {
            e.printStackTrace();
        } 
    }
    
    @Test
    public void download(){
        try {
             // 初始化全局配置。加载一个配置文件
            ClientGlobal.init("D:\workspace-12306\Test\src\test\resources\fdfs_client.conf");
            // 创建一个TrackerClient对象
            TrackerClient tracker = new TrackerClient(); 
            // 创建一个TrackerServer对象。
            TrackerServer trackerServer = tracker.getConnection(); 
            // 声明一个StorageServer对象，
            StorageServer storageServer = null;
            // 获得StorageClient对象
            StorageClient storageClient = new StorageClient(trackerServer, storageServer); 
            byte[] b = storageClient.download_file("group1", "M00/00/00/wKjOi1gi0nOAcSo8AAA63pKOZZ0312.jpg"); 
            System.out.println(b); 
            // 将下载的文件流保存
            IOUtils.write(b, new FileOutputStream("D:/"+UUID.randomUUID().toString()+".jpg"));
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    }
}

在开始测试时遇到一个异常：

connect to server 192.168.206.139:22122 fail
java.net.SocketTimeoutException: connect timed out
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:579)
    at org.csource.fastdfs.TrackerGroup.getConnection(TrackerGroup.java:47)
    at org.csource.fastdfs.TrackerGroup.getConnection(TrackerGroup.java:72)
    at org.csource.fastdfs.TrackerClient.getConnection(TrackerClient.java:58)
    at FastDFS.upload(FastDFS.java:26)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
connect to server 192.168.206.139:22122 fail
java.net.SocketTimeoutException: connect timed out
    at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
    at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:85)
    at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
    at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
    at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:172)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:579)
    at org.csource.fastdfs.TrackerGroup.getConnection(TrackerGroup.java:47)
    at org.csource.fastdfs.TrackerGroup.getConnection(TrackerGroup.java:72)
    at org.csource.fastdfs.TrackerClient.getConnection(TrackerClient.java:58)
    at org.csource.fastdfs.TrackerClient.getStoreStorage(TrackerClient.java:91)
    at org.csource.fastdfs.StorageClient.newWritableStorageConnection(StorageClient.java:1938)
    at org.csource.fastdfs.StorageClient.do_upload_file(StorageClient.java:703)
    at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:164)
    at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:132)
    at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:114)
    at FastDFS.upload(FastDFS.java:33)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
org.csource.common.MyException: getStoreStorage fail, errno code: 0
    at org.csource.fastdfs.StorageClient.newWritableStorageConnection(StorageClient.java:1941)
    at org.csource.fastdfs.StorageClient.do_upload_file(StorageClient.java:703)
    at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:164)
    at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:132)
    at org.csource.fastdfs.StorageClient.upload_file(StorageClient.java:114)
    at FastDFS.upload(FastDFS.java:33)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
View Code

连接超时问题，这是由于linux没有开放22122端口和23000端口所致，我们可以关闭linux的防火墙iptables，但是不推荐这样做，会有安全问题，建议将这两个端口添加到防火墙开放端口中：

#关闭防火墙命令
service iptables stop
#将22111和23000端口添加到防火墙中
/sbin/iptables -I INPUT -p tcp --dport 22122 -j ACCEPT
/sbin/iptables -I INPUT -p tcp --dport 23000 -j ACCEPT

#保存iptables
/etc/rc.d/init.d/iptables save

#重启iptables
service iptables restart

配置完iptables，再测试上传就会成功，打印出上传信息：

可以将打印的上传信息在浏览器中查看是否上传成功：

在浏览器中能够正常显示，说明长传成功。

在D盘能够找到保存的图片，说明下载成功。

【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/qixing/p/6047372.html