FastDFS整合SpringBoot(五)

pom.xml

<dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-thymeleaf</artifactId>

        </dependency>

        <dependency>

            <groupId>com.github.tobato</groupId>

            <artifactId>fastdfs-client</artifactId>

            <version>1.26.2</version>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

            <exclusions>

                <exclusion>

                    <groupId>org.junit.vintage</groupId>

                    <artifactId>junit-vintage-engine</artifactId>

                </exclusion>

            </exclusions>

        </dependency>

    </dependencies>

配置类

@Configuration
@Import(FdfsClientConfig.class)
@EnableMBeanExport(registration = RegistrationPolicy.IGNORE_EXISTING)
public class FdfsConfig {

}

包装类

@Component

public class FastDFSClientWrapper {

    private final Logger logger = LoggerFactory.getLogger(FastDFSClientWrapper.class);

    @Autowired

    private FastFileStorageClient fastFileStorageClient;

    /**

     * 文件上传

     * 最后返回fastDFS中的文件名称;group1/M00/01/04/CgMKrVvS0geAQ0pzAACAAJxmBeM793.doc

     *

     * @param bytes     文件字节

     * @param fileSize  文件大小

     * @param extension 文件扩展名

     * @return fastDfs路径

     */

    public String uploadFile(byte[] bytes, long fileSize, String extension) {

        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);

        StorePath storePath = fastFileStorageClient.uploadFile(byteArrayInputStream, fileSize, extension, null);

        logger.info(storePath.getGroup() + "==" + storePath.getPath() + "======" + storePath.getFullPath());

        return storePath.getFullPath();

    }

    /**

     * 下载文件

     *  返回文件字节流大小

     * @param fileUrl 文件URL

     * @return 文件字节

     * @throws IOException

     */

    public byte[] downloadFile(String group,String path) throws IOException {

        DownloadByteArray downloadByteArray = new DownloadByteArray();

        byte[] bytes = fastFileStorageClient.downloadFile(group, path, downloadByteArray);

        return bytes;

    }

}

html

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"

      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">

<head>

    <meta charset="UTF-8" />

    <title>Insert title here</title>

</head>

<body>

<h1 th:inlines="text">文件上传</h1>

<form action="upload" method="post" enctype="multipart/form-data">

    <p>选择文件: <input type="file" name="file"/></p>

    <p><input type="submit" value="提交"/></p>

</form>

</body>

</html>

application.yml

#fastdfs 配置

fdfs:

  so-timeout: 1500

  connect-timeout: 600

  thumb-image:

    width: 150

    height: 150

  tracker-list:

    - 192.168.180.104:22122

spring:

  thymeleaf:

    prefix: classpath:/templates/

web层

@RestController

public class FdfsController {

    @Autowired

    private FastDFSClientWrapper fastDFSClientWrapper;

    private final Logger logger = LoggerFactory.getLogger(FdfsController.class);

    @RequestMapping("file")

    public String file(){

        return "/fileUploade";

    }

    @PostMapping("/upload")

    public void upload(MultipartFile file) throws Exception {

        byte[] bytes = new byte[0];

        try {

            bytes = file.getBytes();

        } catch (IOException e) {

            logger.error("获取文件错误");

            e.printStackTrace();

        }

        //获取源文件名称

        String originalFileName = file.getOriginalFilename();

        //获取文件后缀--.doc

        String extension = originalFileName.substring(originalFileName.lastIndexOf(".") + 1);

        String fileName = file.getName();

        //获取文件大小

        long fileSize = file.getSize();

        System.out.println(originalFileName + "==" + fileName + "==" + fileSize + "==" + extension + "==" + bytes.length);

         String string = fastDFSClientWrapper.uploadFile(bytes, fileSize, extension);

         //group1/M00/00/00/wKi0aF3I4dOAIhAXAAAG7e1-evI891.txt

         System.out.println(string);

    }

    @GetMapping("/downloadFile")

    public void downloadFile(String group,String path,String fileName,HttpServletResponse response) throws Exception {

        byte[] bytes = fastDFSClientWrapper.downloadFile(group, path);

        //设置相应类型application/octet-stream （注：applicatoin/octet-stream 为通用，一些其它的类型苹果浏览器下载内容可能为空）

        response.reset();

        response.setContentType("applicatoin/octet-stream");

        //设置头信息                 Content-Disposition为属性名  附件形式打开下载文件   指定名称  为 设定的fileName

        response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));

        // 写入到流

        ServletOutputStream out = response.getOutputStream();

        out.write(bytes);

        out.close();

    }

}

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FastDFS整合SpringBoot(五)

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