FastDFS文件操作-java
未安装fastdfs先安装：FastDFS安装配置(CentOS7)，接下来写个测试demo。
创建demo项目
1、pom.xml引入依赖
<!-- fastDFS依赖就一个 -->
<dependencies>
<dependency>
<groupId>net.oschina.zcx7878</groupId>
<artifactId>fastdfs-client-java</artifactId>
<version>1.27.0.0</version>
</dependency>
</dependencies>2、配置文件
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 = 192.168.1.104:221223、代码
（1）FastDfsUtil.java工具类(仅供参考)
package com.fdfs.demo;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.csource.common.MyException;
import org.csource.fastdfs.ClientGlobal;
import org.csource.fastdfs.FileInfo;
import org.csource.fastdfs.StorageClient;
import org.csource.fastdfs.StorageServer;
import org.csource.fastdfs.TrackerClient;
import org.csource.fastdfs.TrackerServer;
/**
*
* @ClassName: FastDfsUtil
* @Description: FastDfs文件管理简单工具类
* @author zhoujie
* @date 2018年11月27日 下午6:10:16
* @version V1.0
*/
public class FastDfsUtil {
private static TrackerClient trackerClient = null;
private static TrackerServer trackerServer = null;
private static StorageServer storageServer = null;
private static StorageClient storageClient = null;
static {
try {
ClientGlobal.init("fdfs_client.conf");
trackerClient = new TrackerClient();
trackerServer = trackerClient.getConnection();
storageClient = new StorageClient(trackerServer, storageServer);
} catch (IOException | MyException e) {
throw new RuntimeException("FastDfs工具类初始化失败!");
}
}
/**
*
* @Title: fdfsUpload
* @Description: 通过文件流上传文件
* @param @param inputStream 文件流
* @param @param filename 文件名称
* @param @return
* @param @throws IOException
* @param @throws MyException
* @return String 返回文件在FastDfs的存储路径
* @throws
*/
public static String fdfsUpload(InputStream inputStream, String filename) throws IOException, MyException{
String suffix = ""; //后缀名
try{
suffix = filename.substring(filename.lastIndexOf(".")+1);
}catch (Exception e) {
throw new RuntimeException("参数filename不正确!格式例如：a.png");
}
String savepath = ""; //FastDfs的存储路径
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
byte[] buff = new byte[1024];
int len = 0;
while ((len = inputStream.read(buff)) != -1) {
swapStream.write(buff, 0, len);
}
byte[] in2b = swapStream.toByteArray();
String[] strings = storageClient.upload_file(in2b, suffix, null); //上传文件
for (String str : strings) {
savepath += "/" + str; //拼接路径
}
return savepath;
}
/**
*
* @Title: fdfsUpload
* @Description: 本地文件上传
* @param @param filepath 本地文件路径
* @param @return
* @param @throws IOException
* @param @throws MyException
* @return String 返回文件在FastDfs的存储路径
* @throws
*/
public static String fdfsUpload(String filepath) throws IOException, MyException{
String suffix = ""; //后缀名
try{
suffix = filepath.substring(filepath.lastIndexOf(".")+1);
}catch (Exception e) {
throw new RuntimeException("上传的不是文件!");
}
String savepath = ""; //FastDfs的存储路径
String[] strings = storageClient.upload_file(filepath, suffix, null); //上传文件
for (String str : strings) {
savepath += "/" + str; //拼接路径
}
return savepath;
}
/**
*
* @Title: fdfsDownload
* @Description: 下载文件到目录
* @param @param savepath 文件存储路径
* @param @param localPath 下载目录
* @param @return
* @param @throws IOException
* @param @throws MyException
* @return boolean 返回是否下载成功
* @throws
*/
public static boolean fdfsDownload(String savepath, String localPath) throws IOException, MyException{
String group = ""; //存储组
String path = ""; //存储路径
try{
int secondindex = savepath.indexOf("/", 2); //第二个"/"索引位置
group = savepath.substring(1, secondindex); //类似：group1
path = savepath.substring(secondindex + 1); //类似：M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png
}catch (Exception e) {
throw new RuntimeException("传入文件存储路径不正确!格式例如：/group1/M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png");
}
int result = storageClient.download_file(group, path, localPath);
if(result != 0){
throw new RuntimeException("下载文件失败：文件路径不对或者文件已删除!");
}
return true;
}
/**
*
* @Title: fdfsDownload
* @Description: 返回文件字符数组
* @param @param savepath 文件存储路径
* @param @return
* @param @throws IOException
* @param @throws MyException
* @return byte[] 字符数组
* @throws
*/
public static byte[] fdfsDownload(String savepath) throws IOException, MyException{
byte[] bs = null;
String group = ""; //存储组
String path = ""; //存储路径
try{
int secondindex = savepath.indexOf("/", 2); //第二个"/"索引位置
group = savepath.substring(1, secondindex); //类似：group1
path = savepath.substring(secondindex + 1); //类似：M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png
}catch (Exception e) {
throw new RuntimeException("传入文件存储路径不正确!格式例如：/group1/M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png");
}
bs = storageClient.download_file(group, path); //返回byte数组
return bs;
}
/**
*
* @Title: fdfsDeleteFile
* @Description: 删除文件
* @param @param savepath 文件存储路径
* @param @return
* @param @throws IOException
* @param @throws MyException
* @return boolean 返回true表示删除成功
* @throws
*/
public static boolean fdfsDeleteFile(String savepath) throws IOException, MyException{
String group = ""; //存储组
String path = ""; //存储路径
try{
int secondindex = savepath.indexOf("/", 2); //第二个"/"索引位置
group = savepath.substring(1, secondindex); //类似：group1
path = savepath.substring(secondindex + 1); //类似：M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png
}catch (Exception e) {
throw new RuntimeException("传入文件存储路径不正确!格式例如：/group1/M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png");
}
int result = storageClient.delete_file(group, path); //删除文件，0表示删除成功
if(result != 0){
throw new RuntimeException("删除文件失败：文件路径不对或者文件已删除!");
}
return true;
}
/**
*
* @Title: fdfdFileInfo
* @Description: 返回文件信息
* @param @param savepath 文件存储路径
* @param @return
* @param @throws IOException
* @param @throws MyException
* @return FileInfo 文件信息
* @throws
*/
public static FileInfo fdfdFileInfo(String savepath) throws IOException, MyException{
String group = ""; //存储组
String path = ""; //存储路径
try{
int secondindex = savepath.indexOf("/", 2); //第二个"/"索引位置
group = savepath.substring(1, secondindex); //类似：group1
path = savepath.substring(secondindex + 1); //类似：M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png
}catch (Exception e) {
throw new RuntimeException("传入文件存储路径不正确!格式例如：/group1/M00/00/00/wKgBaFv9Ad-Abep_AAUtbU7xcws013.png");
}
FileInfo fileInfo = storageClient.get_file_info(group, path);
return fileInfo;
}
}
（2）Test.java测试
package com.fdfs.demo;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import org.csource.common.MyException;
public class Test {
public static void main(String[] args) {
try {
System.out.println("存储路径："+FastDfsUtil.fdfsUpload("F:/图片/02.jpg")); //上传文件。。。注意路径
//System.out.println(FastDfsUtil.fdfdFileInfo("/group1/M00/00/00/wKgBaFv9HJeAMaseAAIWRj8eKZQ103.jpg").toString()); //文件信息
//System.out.println(FastDfsUtil.fdfsDeleteFile("/group1/M00/00/00/wKgBaFv9HJeAMaseAAIWRj8eKZQ103.jpg")); //删除文件
//System.out.println(FastDfsUtil.fdfsUpload(new FileInputStream(new File("F:/图片/02.jpg")), "02.jpg"));//通过文件流上传文件
//System.out.println(FastDfsUtil.fdfsDownload("/group1/M00/00/00/wKgBaFv9acaANK2oAAIWRj8eKZQ339.jpg").length); //获取文件byte[]
//System.out.println(FastDfsUtil.fdfsDownload("/group1/M00/00/00/wKgBaFv9acaANK2oAAIWRj8eKZQ339.jpg", "D:/logs")); //下载文件到本地(拒绝访问)
} catch (IOException | MyException e) {
e.printStackTrace();
}
}
}ok!
效果：
可以直接浏览器预览
http://192.168.1.104/group1/M00/00/00/wKgBaFwXZd2ALGUxAAIWRj8eKZQ220.jpg
ojbk，！！！
