Introduction to FastDFS Distributed File System (3)-Java Client Use FastDFS

1.Java client

Download fastdfs-client-java source package

Address: https://gitee.com/fastdfs100/fastdfs-client-java/tags

Download the latest version
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Compile the source code package of fastdfs-client-java into a jar package

The cmd command enters the fastdfs-client-java directory and executes the mvn command

mvn clean

mvn compile (可选)

mvn package

After the compilation is complete, a jar package will be generated
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Add the jar package of fastdfs-client-java to the local Maven warehouse

(Note: If there is a private warehouse address, you can upload it to the private warehouse)

mvn install:install-file -DgroupId=org.csource -DartifactId=fastdfs-client-java -Dversion=1.28 -Dpackaging=jar -Dfile=fastdfs-client-java-1.28-SNAPSHOT.jar

Create Maven project

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Add project dependencies

 <dependency>
            <groupId>org.csource</groupId>
            <artifactId>fastdfs-client-java</artifactId>
            <version>1.28</version>
 </dependency>
  <dependency>
          <groupId>commons-io</groupId>
          <artifactId>commons-io</artifactId>
          <version>2.5</version>

Add FastDFS configuration file fdfs_client.conf

tracker_server = 192.168.1.107:22122

Write code to connect to FastDFS and upload pictures

import org.csource.common.MyException;
import org.csource.fastdfs.*;

import java.io.IOException;
/**
 * 测试java连接FastDFS
 */
public class TestFastDfs {
    
    

    public static void main(String[] args) throws IOException, MyException {
    
    
        //1.获取配置文件路径
        String configNmae = TestFastDfs.class.getResource("/fdfs_client.conf").getPath();
        System.out.println(configNmae);
        //2.加载配置文件
        ClientGlobal.init(configNmae);
        // 3.创建一个TrackerClient对象
        TrackerClient trackerClient = new TrackerClient();
        // 4.通过TrackerClient对象获得TrackerServer对象
        //fastdfs新版本由connection更改为getTrackerServer方法
        TrackerServer trackerServer = trackerClient.getTrackerServer();  
        // 5.创建StorageServer的引用，null就可以了
        StorageServer storageServer = null;
        // 6.创建一个StorageClient对象，其需要两个参数，一个是TrackerServer，一个是StorageServer
        StorageClient storageClient = new StorageClient(trackerServer, storageServer);
        // 7.使用StorageClient对象上传文件(图片)
        // 参数1：文件名，参数名：扩展名，不能包含"."，参数3：文件的元数据，保存文件的原始名、大小、尺寸等，如果没有可为null
        String[] strings = storageClient.upload_file("E:\\资料\\学习资料\\分布式架构\\FastDFS\\image\\1.png", "png", null);
        for (String string : strings) {
    
    
            System.out.println(string);
        }


    }

}

After the code is executed, the running result: as shown in the figure below, we have successfully uploaded the image to the fastdfs file directory
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