fastDFS 上传 java源码
要想搭建fastDFS网上有相近的文章:
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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)
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。
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