对FastDFS文件系统安装后的使用。
FastDFS的安装请参考这篇:https://www.cnblogs.com/niceyoo/p/13511082.html
本文环境:IDEA + JDK1.8 + Maven
简单说一下这个依赖部分,目前大部分都是采用的如下依赖:
net.oschina.zcx7878
fastdfs-client-java
1.27.0.0
本着不重复造轮子,且为了使用方便我们可以去GitHub找一个集成好的依赖:
https://github.com/tobato/FastDFS_Client
com.github.tobato
fastdfs-client
1.27.2
只需要创建一个配置类就可以了:
@Configuration
@Import(FdfsClientConfig.class)
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
public class ComponetImport {
// 导入依赖组件
}
根据自己情况修改相应ip地址及端口号:
server:
port: 8080
ip: 10.211.55.4 # 根据自己FastDFS服务器修改
fdfs:
so-timeout: 1501
connect-timeout: 601
thumb-image: #缩略图生成参数
width: 150
height: 150
tracker-list: #TrackerList参数,支持多个
- 10.211.55.4:22122
web-server-url: http://${ip}:8888/
import com.github.tobato.fastdfs.domain.conn.FdfsWebServer;
import com.github.tobato.fastdfs.domain.fdfs.StorePath;
import com.github.tobato.fastdfs.domain.proto.storage.DownloadByteArray;
import com.github.tobato.fastdfs.exception.FdfsUnsupportStorePathException;
import com.github.tobato.fastdfs.service.FastFileStorageClient;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.Charset;
@Component
public class FastDFSClient {
@Autowired
private FastFileStorageClient storageClient;
@Autowired
private FdfsWebServer fdfsWebServer;
/**
* 上传文件
* @param file 文件对象
* @return 文件访问地址
* @throws IOException
*/
public String uploadFile(MultipartFile file) throws IOException {
StorePath storePath = storageClient.uploadFile(file.getInputStream(),file.getSize(), FilenameUtils.getExtension(file.getOriginalFilename()),null);
return getResAccessUrl(storePath);
}
/**
* 上传文件
* @param file 文件对象
* @return 文件访问地址
* @throws IOException
*/
public String uploadFile(File file) throws IOException {
FileInputStream inputStream = new FileInputStream (file);
StorePath storePath = storageClient.uploadFile(inputStream,file.length(), FilenameUtils.getExtension(file.getName()),null);
return getResAccessUrl(storePath);
}
/**
* 将一段字符串生成一个文件上传
* @param content 文件内容
* @param fileExtension
* @return
*/
public String uploadFile(String content, String fileExtension) {
byte[] buff = content.getBytes(Charset.forName("UTF-8"));
ByteArrayInputStream stream = new ByteArrayInputStream(buff);
StorePath storePath = storageClient.uploadFile(stream,buff.length, fileExtension,null);
return getResAccessUrl(storePath);
}
/**
* 封装图片完整URL地址
*/
private String getResAccessUrl(StorePath storePath) {
String fileUrl = fdfsWebServer.getWebServerUrl() + storePath.getFullPath();
return fileUrl;
}
/**
* 删除文件
* @param fileUrl 文件访问地址
* @return
*/
public void deleteFile(String fileUrl) {
if (StringUtils.isEmpty(fileUrl)) {
return;
}
try {
StorePath storePath = StorePath.parseFromUrl(fileUrl);
storageClient.deleteFile(storePath.getGroup(), storePath.getPath());
} catch (FdfsUnsupportStorePathException e) {
System.out.println(e.getMessage());
// TODO 只是测试,所以未使用,logger,正式环境请修改打印方式
}
}
/**
* 下载文件
*
* @param fileUrl 文件URL
* @return 文件字节
* @throws IOException
*/
public byte[] downloadFile(String fileUrl) throws IOException {
String group = fileUrl.substring(0, fileUrl.indexOf("/"));
String path = fileUrl.substring(fileUrl.indexOf("/") + 1);
DownloadByteArray downloadByteArray = new DownloadByteArray();
byte[] bytes = storageClient.downloadFile(group, path, downloadByteArray);
return bytes;
}
}
@RestController
@RequestMapping("/file")
public class FileUploadController {
@Autowired
private FastDFSClient fastDFSClient;
/**
* 上传
* @param file
* @return
* @throws IOException
*/
@RequestMapping("/upload")
public String uploadFile(MultipartFile file) throws IOException {
return fastDFSClient.uploadFile(file);
}
}
@RestController
@RequestMapping("/file")
public class FileUploadController {
@Autowired
private FastDFSClient fastDFSClient;
/**
* 下载
* @param fileUrl
* @param response
* @throws IOException
*/
@RequestMapping("/download")
public void downloadFile(String fileUrl, HttpServletResponse response) throws IOException {
byte[] bytes = fastDFSClient.downloadFile(fileUrl);
// TODO 这里只是为了整合fastdfs,所以写死了文件格式。需要在上传的时候保存文件名。下载的时候使用对应的格式
response.setHeader("Content-disposition", "attachment;filename=" + URLEncoder.encode("sb.xlsx", "UTF-8"));
response.setCharacterEncoding("UTF-8");
ServletOutputStream outputStream = null;
try {
outputStream = response.getOutputStream();
outputStream.write(bytes);
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
outputStream.flush();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
测试下载路径:
http://127.0.0.1:8080/file/download?fileUrl=group1/M00/00/00/CtM3BF84r4SAEPDgAABoGL78QcY682.jpg
拼接的参数为:group1/M00/00/00/CtM3BF84r4SAEPDgAABoGL78QcY682.jpg
大家想修改路径的话,需要同步修改 downloadFile() 方法里的分隔方式。
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