How to quickly build a picture server [easy to understand]

Hello everyone , I meet you again , I'm your friend, Quan Jun .

Preface

Distributed cluster project , The normal general project is to put pictures on web In the project of the project's own server , But in the cluster environment , The picture cannot be found .

Code reference : https://github.com/zyjcxc/taotao.git

such as ：

terms of settlement ：

linux Do disk mapping , Said it could be solved , But it's hard to deal with too many servers , So you can build another image server

The image server has two services ：

• http： have access to nginx Be a static resource server . You can also use apache. Recommended nginx, More efficient . It can also be combined with my previous mongo File server , Will file url Deposit in Mongo in .
• ftp service ： Use linux Make servers , stay linux There was a ftp Components vsftpd.

step

Server requirements

Linux：CentOS6.4
Nginx：1.8.0
Vsftpd: Need to be installed online .

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Nginx install

Reference resources Nginx Installation guide .

Vsftpd install

Reference resources Vsftpd Installation guide .

Test of image server

After installing the environment , It can be used ftp client （FileZilla） Test whether you can upload and download files .

ftp After uploading the picture , Use the browser to directly access the image path , Test whether there are pictures .

java Upload the code

Use apache Of FTPClient Tool access ftp The server . Need to be in pom Add dependencies to the file ：

<dependency>
    <groupId>commons-net</groupId>
    <artifactId>commons-net</artifactId>
    <version>${commons-net.version}</version>
</dependency>

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public class FTPClientTest { 
   
    @Test
    public void testFtp() throws Exception {
        //1、 Connect ftp The server 
        FTPClient ftpClient = new FTPClient();
        ftpClient.connect("192.168.1.133", 21);
        //2、 Sign in ftp The server 
        ftpClient.login("ftpuser", "ftpuser");
        //3、 Read local file 
        FileInputStream inputStream = new FileInputStream(new File("D:\\Documents\\Pictures\\images\\2010062119283578.jpg"));
        //4、 Upload files 
        //1） Specify upload directory 
        ftpClient.changeWorkingDirectory("/home/ftpuser/www/images");
        //2） Specify file type 
        ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);
        // The first parameter ： The name of the file on the remote server 
        // The second parameter ： File stream 
        ftpClient.storeFile("hello.jpg", inputStream);
        //5、 Log out 
        ftpClient.logout();
    }
}

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You can follow up according to your needs , Encapsulate tool classes , Write service, contorller that will do , Intercept part of the code

public Map uploadPicture(MultipartFile uploadFile) {
    Map<String, Object> map = new HashMap<>(2);
    try {
        String oldName = uploadFile.getOriginalFilename();
        String newName = IDUtils.genImageName();
        newName += oldName.substring(oldName.lastIndexOf("."));
        String imagePath = new DateTime
                ().toString("yyyy/MM/dd");
        boolean result = FtpUtil.uploadFile(FTP_HOST, FTP_PORT, FTP_USERNAME, FTP_PASSWORD, FTP_BASE_PATH, imagePath, newName, uploadFile.getInputStream());
        if (!result) {
            map.put("error", 1);
            map.put("message", " File upload failed ");
            return map;
        }
        map.put("error", 0);
        map.put("url", IMAGE_BASE_URL + "/" + imagePath + "/" + newName);
    } catch (IOException e) {
        map.put("error", 1);
        map.put("message", " File upload exception ");
        e.printStackTrace();
        return map;
    }
    return map;
}

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Be careful

springmvc frame , Add a file upload parser to the configuration file

<!--  Define file upload parser  -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <!--  Set the default encoding  -->
    <property name="defaultEncoding" value="UTF-8"></property>
    <!--  Set the maximum number of file uploads 5MB,5*1024*1024 -->
    <property name="maxUploadSize" value="5242880"></property>
</bean>

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