项目整体
image.png
maven
<dependency>
<groupId>net.oschina.zcx7878</groupId>
<artifactId>fastdfs-client-java</artifactId>
<version>1.27.0.0</version>
</dependency>
这里把文件上传的相关属性封装在了一个接口中，需要用到文件上传的相关实体或者工具类直接实现这个接口即可：
public interface FileManagerConfig extends Serializable {
public static final String FILE_DEFAULT_AUTHOR = "WangLiang";
public static final String PROTOCOL = "http://";
public static final String SEPARATOR = "/";
public static final String TRACKER_NGNIX_ADDR = "192.168.0.68";
public static final String TRACKER_NGNIX_PORT = "";
public static final String CLIENT_CONFIG_FILE = "fdfs_client.conf";
}
接下来定义FastDFS文件的实体类：
package com.wl.bean;
/**
* <strong>类概要： FastDFS文件实体</strong> <br>
* <strong>创建时间： 2016-9-27 下午10:29:25</strong> <br>
*
* @Project springmvc-main(com.wl.bean)
* @author Wang Liang
* @version 1.0.0
*/
public class FastDFSFile implements FileManagerConfig {
private static final long serialVersionUID = 1L;
private byte[] content;
private String name;
private String ext;
private String length;
private String author = FILE_DEFAULT_AUTHOR;
public FastDFSFile(byte[] content, String ext) {
this.content = content;
this.ext = ext;
}
public FastDFSFile(byte[] content, String name, String ext) {
this.content = content;
this.name = name;
this.ext = ext;
}
public FastDFSFile(byte[] content, String name, String ext, String length,
String author) {
this.content = content;
this.name = name;
this.ext = ext;
this.length = length;
this.author = author;
}
public byte[] getContent() {
return content;
}
public void setContent(byte[] content) {
this.content = content;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getExt() {
return ext;
}
public void setExt(String ext) {
this.ext = ext;
}
public String getLength() {
return length;
}
public void setLength(String length) {
this.length = length;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
}
如上所示，包括上传所必须的file_buff和file_ext_name以及在meta_list中存放的几个文件描述属性。接下来看一下核心工具类FileManager：
import java.io.File;
import java.io.IOException;
import org.csource.common.NameValuePair;
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.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
/**
* <strong>类概要： FastDFS Java客户端工具类</strong> <br>
* <strong>创建时间： 2016-9-26 上午10:26:48</strong> <br>
*
* @Project springmvc-main(com.wl.bean)
* @author Wang Liang
* @version 1.0.0
*/
public class FileManager implements FileManagerConfig {
private static final long serialVersionUID = 1L;
private static TrackerClient trackerClient;
private static TrackerServer trackerServer;
private static StorageServer storageServer;
private static StorageClient storageClient;
static {
try {
String classPath = new File(FileManager.class.getResource("/").getFile()).getCanonicalPath();
String fdfsClientConfigFilePath = classPath + File.separator + CLIENT_CONFIG_FILE;
ClientGlobal.init(fdfsClientConfigFilePath);
trackerClient = new TrackerClient();
trackerServer = trackerClient.getConnection();
storageClient = new StorageClient(trackerServer, storageServer);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* <strong>方法概要： 文件上传</strong> <br>
* <strong>创建时间： 2016-9-26 上午10:26:11</strong> <br>
*
* @param FastDFSFile
* file
* @return fileAbsolutePath
* @author Wang Liang
*/
public static String upload(FastDFSFile file,NameValuePair[] valuePairs) {
String[] uploadResults = null;
try {
uploadResults = storageClient.upload_file(file.getContent(),file.getExt(), valuePairs);
} catch (Exception e) {
e.printStackTrace();
}
String groupName = uploadResults[0];
String remoteFileName = uploadResults[1];
String fileAbsolutePath = PROTOCOL
+ TRACKER_NGNIX_ADDR
//+ trackerServer.getInetSocketAddress().getHostName()
//+ SEPARATOR + TRACKER_NGNIX_PORT
+ SEPARATOR + groupName
+ SEPARATOR + remoteFileName;
return fileAbsolutePath;
}
}
如上所示，在类初始化时加载fdfs_client.conf配置文件并构造tracker server和storage server，文件上传是通过storageClient.upload_file方法来实现的，而返回的uploadResults字符串数组正是文件名，固定两个元素，uploadResults[0]是组名（group），而uploadResults[1]就是组名后面的文件全名了，最后我们的方法中有做了部分拼接使得FileManager.upload直接可以返回完成的文件路径，下面就是我们调用上传方法了：
package com.neuedu;
import org.csource.common.NameValuePair;
import java.io.FileInputStream;
import java.io.IOException;
/**
* Hello world!
*
*/
public class App
{
public static void main( String[] args ) throws IOException {
// 获取文件后缀名
String ext = "jpg";
FileInputStream fileReader = new FileInputStream("d:/dog.jpg");
byte[] bytes = new byte[10000000];//10M
int length = fileReader.read(bytes);
FastDFSFile file = new FastDFSFile(bytes,ext);
NameValuePair[] meta_list = new NameValuePair[4];
meta_list[0] = new NameValuePair("fileName", "abc");
meta_list[1] = new NameValuePair("fileLength", String.valueOf(length));
meta_list[2] = new NameValuePair("fileExt", ext);
meta_list[3] = new NameValuePair("fileAuthor", "WangLiang");
String filePath = FileManager.upload(file,meta_list);
System.out.println(filePath);
}
}
fdfs_client.conf
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 = 192.168.238.130:22122
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