上篇文章介绍了如何使用docker安装fastDFS文件服务器，这一篇就介绍整合springBoot实现文件上传到fastDFS文件服务器

　　1.pom.xml文件添加依赖

net.oschina.zcx7878 fastdfs-client-java 1.27.0.0

　　2.在resource包下创建配置文件fdfs_client.conf　　

　　tracker_server的值ip为你文件服务器的ip

connect_timeout=30
network_timeout=60
charset = UTF-8
http.tracker_http_port = 8888
http.anti_steal_token = no
http.secret_key =
tracker_server=ip:22122

　　3.创建FastDFSConfig.java加载fdfs_client.conf配置文件

import org.csource.fastdfs.ClientGlobal;
import org.csource.fastdfs.TrackerClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.io.Resource;

/**
* fastDFS文件上传的配置
*/

@Configuration
public class FastDFSConfig {
private final Logger log = LoggerFactory.getLogger(this.getClass());

@Value("classpath:fdfs\_client.conf")  
private Resource ccs;

@Bean  
public TrackerClient initClient(){  
    try{  
        ClientGlobal.init(ccs.getFilename());  
        return new TrackerClient();  
    }catch (Exception e){  
        log.info("FastDFS创建客户端失败");  
        return null;  
    }  
}

}

　　4.创建文件上传的Cotroller，返回的访问路径中ip是你文件服务器的ip

import org.csource.common.NameValuePair;
import org.csource.fastdfs.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {

private Logger log = LoggerFactory.getLogger(FileController.class);  
@Autowired  
private TrackerClient trackerClient;

@PostMapping("/upload")  
public String uploadFile(@RequestParam("file") MultipartFile file) throws Exception{  
    if(file == null){  
        throw new RuntimeException("文件不能为空");  
    }  
    //1.获取文件的完整名称  
    String filename = file.getOriginalFilename();  
    if(StringUtils.isEmpty(filename)){  
        throw new RuntimeException("文件不存在");  
    }  
    //2.获取文件的扩展名称  
    String extName = filename.substring(filename.lastIndexOf(".") + 1);  
    log.info("文件的全名："+filename+"    文件的扩展名："+extName);  
    NameValuePair\[\] metaList = new NameValuePair\[1\];  
    metaList\[0\] = new NameValuePair("fileName", filename);  
    //3.创建trackerServer  
    TrackerServer trackerServer = trackerClient.getConnection();  
    // 4、创建一个 StorageServer 的引用，值为 null  
    StorageServer storageServer = null;  
    // 5、创建一个 StorageClient 对象，需要两个参数 TrackerServer 对象、StorageServer 的引用  
    StorageClient storageClient = new StorageClient(trackerServer, storageServer);  
    // 6、使用 StorageClient 对象上传图片。  
    String\[\] strings = storageClient.upload\_file(file.getBytes(), extName, metaList);  
    return "http://ip:8888/"+strings\[0\]+"/"+strings\[1\];

}

　　5.此时用postman调用你的文件上传接口，根据返回的路径在浏览器上访问，即可成功访问到你上传的文件。