springboot精华文章（文件上传）——通过FastDFS＋nginx实现文件上传下载删除等操作
(B站云e办）SpringBoot开发项目实战记录（结）
- 引言: 本文使用Centos7部署fastDFS＋nginx
- 一、 fastDFS所需要的pom
-
- 1.2 引入fastDFS的pom
- 1.2引入fastDFS的pom失败解决方案
- 二、fastDFS的配置文件
- 三、fastDFS的工具类编写
-
- 3.1 加载fastDFS配置
- 3.2 fastDFS的文件上传
- 3.3 fastDFS的获取文件信息
- 3.4 fastDFS的文件下载
- 3.5 fastDFS的文件删除
- 3.6 fastDFS的获取storageClient、获取trackerServer
- 3.7 fastDFS的获取服务的运行服务器地址
- 3.8 整体文件，点我进行复制
- 四、 上传一个图片具体应用
-
- 4.1 controller层
- 4.2 service层
引言: 本文使用Centos7部署fastDFS＋nginx
热烈推荐该网址进行优先配置：点我跳转
一、 fastDFS所需要的pom
1.2 引入fastDFS的pom
<dependency>
<groupId>org.csourcegroupId>
<artifactId>fastdfs-client-javaartifactId>
<version>1.29-SNAPSHOTversion>
dependency>
1.2引入fastDFS的pom失败解决方案
由于这pom好像maven不再维护，可以下载到本地再加载到本地maven仓库，然后引入就不会报错了，具体解决我是参考这个文章：点我跳转
二、fastDFS的配置文件
# 连接超时
connect_timeout = 2
# 网络超时
network_timeout = 30
# 编码格式
charset = UTF-8
# tracker端口号
http.tracker_http_port = 8080
# 防盗链功能
http.anti_steal_token = no
# 密钥
http.secret_key = FastDFS123457890
# tracker_ip: 端口号
tracker_server = 自己的fastDFS服务地址:22122
# 连接池配置
connection_pool.enable = true
connection_pool.max_count_per_entry = 500
connection_pool.max_idle_time = 3600
connection_pool.max_wait_time_in_ms = 1000
三、fastDFS的工具类编写
拆开各个功能，最后一个为整体文件，直接cv
3.1 加载fastDFS配置
⭐ 通过ClientGlobal.init(filePath);加载配置
/**
* FastDFS工具类
*/
public class FastDFSUtils {
private static Logger logger = LoggerFactory.getLogger(FastDFSUtils.class);
/**
* 初始化客户端
* ClientGlobal.init(filePath)： 读取配置文件，并初始化对应的属性
*/
static {
try {
// 获取绝对路径
String filePath = new ClassPathResource("fdfs_client.conf").getFile().getAbsolutePath();
ClientGlobal.init(filePath);
} catch (Exception e) {
// 输出到日志
logger.error("初始化fastDFS失败:", e);
}
}
3.2 fastDFS的文件上传
⭐ uploadResults返回的是一个字符串数组： 第一个元素为组名，第二个元素为组下的文件路径
/**
* uploadResults是一个字符串数组， 第一个元素是组名， 第二个元素是在该组下文件路径
* @param file
* @return
*/
public static String[] upload(MultipartFile file) {
String name = file.getOriginalFilename();
logger.info("文件名：",name);
StorageClient storageClient = null;
String[] uploadResults = null;
try {
// 获取storage客户端
storageClient = getStorageClient();
// 上传
uploadResults = storageClient.upload_file(file.getBytes(), name.substring(name.lastIndexOf(".")+1),null);
}catch (Exception e) {
logger.error("文件上传失败:", e);
}
if (null == uploadResults) {
logger.error("上传失败", storageClient.getErrorCode());
}
return uploadResults;
}
3.3 fastDFS的获取文件信息
/**
* 获取文件信息
* @param groupName
* @param remoteFileName
* @return
*/
public static FileInfo getFileInfo(String groupName, String remoteFileName) {
StorageClient storageClient = null;
try {
storageClient = getStorageClient();
return storageClient.get_file_info(groupName, remoteFileName);
}catch (Exception e) {
logger.error("文件信息获取失败:", e);
}
return null;
}
3.4 fastDFS的文件下载
/**
* 下载文件
* @param groupName
* @param remoteFileName
* @return
*/
public static InputStream downFile(String groupName, String remoteFileName) {
StorageClient storageClient = null;
try {
storageClient = getStorageClient();
byte[] fileByte = storageClient.download_file(groupName, remoteFileName);
InputStream inputStream = new ByteArrayInputStream(fileByte);
return inputStream;
}catch (Exception e) {
logger.error("文件下载失败:", e);
}
return null;
}
3.5 fastDFS的文件删除
/**
* 删除文件
* @param groupName
* @param remoteFileName
*/
public static void deleteFile(String groupName, String remoteFileName) {
StorageClient storageClient = null;
try {
storageClient = getStorageClient();
storageClient.delete_file(groupName, remoteFileName);
}catch (Exception e) {
logger.error("文件删除失败:", e);
}
}
3.6 fastDFS的获取storageClient、获取trackerServer
/**
* 获取 storageClient
* @return
* @throws IOException
*/
private static StorageClient getStorageClient() throws IOException{
TrackerServer trackerServer = getTrackerServer();
StorageClient storageClient = new StorageClient(trackerServer, null);
return storageClient;
}
/**
* 通过trackerClient客户端获取 trackerServer服务
* @return
* @throws IOException
*/
private static TrackerServer getTrackerServer() throws IOException {
TrackerClient trackerClient = new TrackerClient();
TrackerServer trackerServer = trackerClient.getTrackerServer();
return trackerServer;
}
3.7 fastDFS的获取服务的运行服务器地址
/**
* 获取文件url
*/
public static String getTrackerUrl() {
TrackerClient trackerClient = new TrackerClient();
TrackerServer trackerServer = null;
StorageServer storageServer = null;
try {
trackerServer = trackerClient.getTrackerServer();
storageServer = trackerClient.getStoreStorage(trackerServer);
} catch (Exception e) {
logger.error("文件路径获取失败", e.getMessage());
}
return "http://" + storageServer.getInetSocketAddress().getHostString()+":6677/";
}
3.8 整体文件，点我进行复制
package com.jzq.server.util.fastDFS;
import io.swagger.models.auth.In;
import org.csource.fastdfs.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.web.multipart.MultipartFile;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
/**
* FastDFS工具类
*/
public class FastDFSUtils {
private static Logger logger = LoggerFactory.getLogger(FastDFSUtils.class);
/**
* 初始化客户端
* ClientGlobal.init(filePath)： 读取配置文件，并初始化对应的属性
*/
static {
try {
// 获取绝对路径
String filePath = new ClassPathResource("fdfs_client.conf").getFile().getAbsolutePath();
ClientGlobal.init(filePath);
} catch (Exception e) {
// 输出到日志
logger.error("初始化fastDFS失败:", e);
}
}
/**
* uploadResults是一个字符串数组， 第一个元素是组名， 第二个元素是在该组下文件路径
* @param file
* @return
*/
public static String[] upload(MultipartFile file) {
String name = file.getOriginalFilename();
logger.info("文件名：",name);
StorageClient storageClient = null;
String[] uploadResults = null;
try {
// 获取storage客户端
storageClient = getStorageClient();
// 上传
uploadResults = storageClient.upload_file(file.getBytes(), name.substring(name.lastIndexOf(".")+1),null);
}catch (Exception e) {
logger.error("文件上传失败:", e);
}
if (null == uploadResults) {
logger.error("上传失败", storageClient.getErrorCode());
}
return uploadResults;
}
/**
* 获取文件信息
* @param groupName
* @param remoteFileName
* @return
*/
public static FileInfo getFileInfo(String groupName, String remoteFileName) {
StorageClient storageClient = null;
try {
storageClient = getStorageClient();
return storageClient.get_file_info(groupName, remoteFileName);
}catch (Exception e) {
logger.error("文件信息获取失败:", e);
}
return null;
}
/**
* 下载文件
* @param groupName
* @param remoteFileName
* @return
*/
public static InputStream downFile(String groupName, String remoteFileName) {
StorageClient storageClient = null;
try {
storageClient = getStorageClient();
byte[] fileByte = storageClient.download_file(groupName, remoteFileName);
InputStream inputStream = new ByteArrayInputStream(fileByte);
return inputStream;
}catch (Exception e) {
logger.error("文件下载失败:", e);
}
return null;
}
/**
* 删除文件
* @param groupName
* @param remoteFileName
*/
public static void deleteFile(String groupName, String remoteFileName) {
StorageClient storageClient = null;
try {
storageClient = getStorageClient();
storageClient.delete_file(groupName, remoteFileName);
}catch (Exception e) {
logger.error("文件删除失败:", e);
}
}
/**
* 获取 storageClient
* @return
* @throws IOException
*/
private static StorageClient getStorageClient() throws IOException{
TrackerServer trackerServer = getTrackerServer();
StorageClient storageClient = new StorageClient(trackerServer, null);
return storageClient;
}
/**
* 通过trackerClient客户端获取 trackerServer服务
* @return
* @throws IOException
*/
private static TrackerServer getTrackerServer() throws IOException {
TrackerClient trackerClient = new TrackerClient();
TrackerServer trackerServer = trackerClient.getTrackerServer();
return trackerServer;
}
/**
* 获取文件url
*/
public static String getTrackerUrl() {
TrackerClient trackerClient = new TrackerClient();
TrackerServer trackerServer = null;
StorageServer storageServer = null;
try {
trackerServer = trackerClient.getTrackerServer();
storageServer = trackerClient.getStoreStorage(trackerServer);
} catch (Exception e) {
logger.error("文件路径获取失败", e.getMessage());
}
return "http://" + storageServer.getInetSocketAddress().getHostString()+":6677/";
}
}
四、 上传一个图片具体应用
4.1 controller层
除了更新数据库，还要更新全局对象，所以获取了authentication
@ApiOperation(value = "更新用户头像")
@PostMapping("/userface")
public RespBean updateAdminUserFace(MultipartFile multipartFile, Integer id, Authentication authentication) {
String[] filePath = FastDFSUtils.upload(multipartFile);
String url = FastDFSUtils.getTrackerUrl() + filePath[0] + "/" + filePath[1];
return adminService.updateAdminUserFace(url, id, authentication);
}
4.2 service层
/**
* 更新用户头像
* @param url
* @param id
* @param authentication
* @return
*/
@Override
public RespBean updateAdminUserFace(String url, Integer id, Authentication authentication) {
Admin admin = adminMapper.selectById(id);
admin.setUserFace(url);
// 更新数据库
int result = adminMapper.updateById(admin);
if (1==result) {
//更新数据库成功后要更新全局对象（security）
Admin principal = (Admin) authentication.getPrincipal();
principal.setUserFace(url);
SecurityContextHolder.getContext().setAuthentication(new UsernamePasswordAuthenticationToken(admin, null, authentication.getAuthorities()));
return RespBean.success("更新用户头像成功");
}
return RespBean.warning("更新用户头像失败");
}