Spring Boot 2.X - 整合FastDFS分布式文件系统

朱雀 2022-03-27 12:24 192阅读 0赞

### 文章目录 ###

*  Spring Boot 2.X - 整合FastDFS分布式文件系统
 *   *  使用Spring Initialize 新建一个Spring Boot项目,引入相关依赖:
     *  配置文件
     *  编写FastDFS工具类
     *  编写前端页面
     *  编写Controller:
     *  运行主程序，访问

# Spring Boot 2.X - 整合FastDFS分布式文件系统 #

> Spring Boot 2.X 整合 FastDFS分布式文件系统 Demo.

## 使用Spring Initialize 新建一个Spring Boot项目,引入相关依赖: ##

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.csource</groupId>
        <artifactId>fastdfs-client-java</artifactId>
        <version>1.27-SNAPSHOT</version>
    </dependency>

`注:fastdfs-client-java依赖包需要自行打包,详情请参照:`  
[fastdfs-client-java][]

## 配置文件 ##

`config/fdfs_client.conf`:

connect_timeout=30
    network_timeout=60
    http.tracker_server_port=80
    # 取决于自己的FastDFS服务器,和/etc/fdfs/storage.conf设置的tracker_server保持一致
    tracker_server=xxx.xxx.xxx.xx:22122

`application.properties`:

server.port=80
    # 文件最大size
    spring.servlet.multipart.max-file-size=2MB
    # FastDFS服务器地址
    app.base.url=http://xxx.xxx.xxx.xxx/

## 编写FastDFS工具类 ##

public class FastDFSClient { 
    	private TrackerClient trackerClient;
    	private TrackerServer trackerServer;
    	private StorageServer storageServer;
    	private StorageClient1 storageClient;
    	
    	public FastDFSClient(String conf) throws Exception { 
    		if (conf.contains("classpath:")) { 
    			conf = conf.replace("classpath:", this.getClass().getResource("/").getPath());
    		}
    		ClientGlobal.init(conf);
    		trackerClient = new TrackerClient();
    		trackerServer = trackerClient.getConnection();
    		storageServer = null;
    		storageClient = new StorageClient1(trackerServer, storageServer);
    	}
    	
    	/** * 上传文件方法 * @param fileName 文件全路径 * @param extName 文件扩展名，不包含（.） * @param metas 文件扩展信息 * @return * @throws Exception */
    	public String uploadFile(String fileName, String extName, NameValuePair[] metas) throws Exception { 
    		String result = storageClient.upload_file1(fileName, extName, metas);
    		return result;
    	}
    	
    	public String uploadFile(String fileName) throws Exception { 
    		return uploadFile(fileName, null, null);
    	}
    	
    	public String uploadFile(String fileName, String extName) throws Exception { 
    		return uploadFile(fileName, extName, null);
    	}
    	
    	/** * 上传文件方法 * @param fileContent 文件的内容，字节数组 * @param extName 文件扩展名 * @param metas 文件扩展信息 * @return * @throws Exception */
    	public String uploadFile(byte[] fileContent, String extName, NameValuePair[] metas) throws Exception { 
    		String result = storageClient.upload_file1(fileContent, extName, metas);
    		return result;
    	}
    	
    	public String uploadFile(byte[] fileContent) throws Exception { 
    		return uploadFile(fileContent, null, null);
    	}
    	
    	public String uploadFile(byte[] fileContent, String extName) throws Exception { 
    		return uploadFile(fileContent, extName, null);
    	}
    }

## 编写前端页面 ##

`(新建上传页面index.html,成功后跳转页面success.html)`

<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>文件上传Demo</title>
    </head>
    <body>
    <h2>单文件上传示例</h2>
    <div>
        <form method="POST" enctype="multipart/form-data" action="/upload">
            <p>
                文件：<input type="file" name="file"/>
                <input type="submit" value="上传"/>
            </p>
        </form>
    </div>
    </body>
    </html>

<html lang="en" xmlns:th="http://www.thymeleaf.org">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
    
    上传成功：
    <img src="" th:src="${imgUrl}" width="50%">
    </body>
    </html>

## 编写Controller: ##

@RestController
    @Slf4j
    public class UploadController { 
        /** * fastDFS服务器地址 */
        @Value("${app.base.url}")
        private String appUrl;
    
        /** * 访问上传页面 * @return */
        @GetMapping("/index")
        public Object index(){ 
            return new ModelAndView("index");
        }
    
        /** * 单文件上传 * @param file * @return * @throws Exception */
        @PostMapping("/upload")
        public Object upload(MultipartFile file) throws Exception { 
            // 文件名
            String originalFilename = file.getOriginalFilename();
            log.info("[文件类型] - [{}]", file.getContentType());
            log.info("[文件名称] - [{}]", originalFilename);
            log.info("[文件大小] - [{}]", file.getSize());
            ModelAndView view = new ModelAndView("success");
            FastDFSClient client = new FastDFSClient("config/fdfs_client.conf");
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);
            log.info("[文件扩展名] = [{}]", extName);
            String uploadFile = client.uploadFile(file.getBytes(), extName);
            String imgUrl = appUrl + uploadFile;
            view.addObject("imgUrl", imgUrl);
            return view;
        }
    }

## 运行主程序，访问 ##

运行`XXXApplication.main()`,访问`http://localhost/index`  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0UwOTYyMDEyNg_size_16_color_FFFFFF_t_70]  
上传图片,成功:  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0UwOTYyMDEyNg_size_16_color_FFFFFF_t_70 1]

> 详细代码
> 
> > GitHub：[https://github.com/xudc0521/spring-boot-v2/tree/master/spring-boot-v2-fastdfs][https_github.com_xudc0521_spring-boot-v2_tree_master_spring-boot-v2-fastdfs]

[fastdfs-client-java]: https://github.com/happyfish100/fastdfs-client-java
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0UwOTYyMDEyNg_size_16_color_FFFFFF_t_70]: /images/20220327/83c2490e773947e8a8afc7326784c624.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0UwOTYyMDEyNg_size_16_color_FFFFFF_t_70 1]: /images/20220327/1938e571affa4dcfaee210f636732ea7.png
[https_github.com_xudc0521_spring-boot-v2_tree_master_spring-boot-v2-fastdfs]: https://github.com/xudc0521/spring-boot-v2/tree/master/spring-boot-v2-fastdfs