SpringBoot开发存储服务器实现过程详解

mvn archetype:generate -DgroupId=com.edurt.sli.sliss -dartifactId=spring-learn-integration-springboot-storage -DarchetypeArtifactId=Maven-archetype-quickstart -Dversion=1.0.0 -DinteractiveMode=false

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="Http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>spring-learn-integration-springboot</artifactId>
        <groupId>com.edurt.sli</groupId>
        <version>1.0.0</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>
    <artifactId>spring-learn-integration-springboot-storage</artifactId>
    <name>SpringBoot开发存储服务器</name>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-WEB</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>${dependency.springboot.version}</version>
                <configuration>
                    <fork>true</fork>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>${plugin.maven.compiler.version}</version>
                <configuration>
                    <source>${system.java.version}</source>
                    <target>${system.java.version}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

package com.edurt.sli.sliss;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringBootStorageIntegration {
    public static void main(String[] args) {
        SpringApplication.run(SpringBootStorageIntegration.class, args);
    }
}

package com.edurt.sli.sliss.controller;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import java.io.File;
import java.io.IOException;
import java.NIO.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;

@RestController
@RequestMapping(value = "upload")
public class UploadController {
    // 文件上传地址
    private final static String UPLOADED_FOLDER = "/Users/shicheng/Desktop/test/";
    @PostMapping
    public String upload(@RequestParam("file") MultipartFile file) {
        if (file.isEmpty()) {
            return "上传文件不能为空";
        }
        try {
            byte[] bytes = file.getBytes();
            Path path = Paths.get(UPLOADED_FOLDER + file.getOriginalFilename());
            Files.write(path, bytes);
            return "上传文件成功";
        } catch (IOException ioe) {
            return "上传文件失败,失败原因: " + ioe.getMessage();
        }
    }
    @GetMapping
    public Object get() {
        File file = new File(UPLOADED_FOLDER);
        String[] filelist = file.list();
        return filelist;
    }
    @DeleteMapping
    public String delete(@RequestParam(value = "file") String file) {
        File source = new File(UPLOADED_FOLDER + file);
        source.delete();
        return "删除文件" + file + "成功";
    }
}

package com.edurt.sli.sliss;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

@SpringBootApplication
@ComponentScan(value = {
        "com.edurt.sli.sliss.controller"
})
public class SpringBootStorageIntegration {
    public static void main(String[] args) {
        SpringApplication.run(SpringBootStorageIntegration.class, args);
    }
}

curl localhost:8080/upload -F "file=@/Users/shicheng/Downloads/qrcode/qrcode_for_ambari.jpg"

curl localhost:8080/upload

curl -X DELETE 'localhost:8080/upload?file=qrcode_for_ambari.jpg'

curl localhost:8080/upload

package com.edurt.sli.sliss.controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import javax.servlet.http.httpservletResponse;
import java.io.*;

@RestController
@RequestMapping(value = "download")
public class DownloadController {
    private final static String UPLOADED_FOLDER = "/Users/shicheng/Desktop/test/";
    @GetMapping
    public String download(@RequestParam(value = "file") String file,
                           HttpServletResponse response) {
        if (!file.isEmpty()) {
            File source = new File(UPLOADED_FOLDER + file);
            if (source.exists()) {
                response.setContentType("application/force-download");// 设置强制下载不打开
                response.addHeader("Content-Disposition", "attachment;fileName=" + file);// 设置文件名
                byte[] buffer = new byte[1024];
                FileInputStream fileInputStream = null;
                BufferedInputStream bufferedInputStream = null;
                try {
                    fileInputStream = new FileInputStream(source);
                    bufferedInputStream = new BufferedInputStream(fileInputStream);
                    OutputStream outputStream = response.getOutputStream();
                    int i = bufferedInputStream.read(buffer);
                    while (i != -1) {
                        outputStream.write(buffer, 0, i);
                        i = bufferedInputStream.read(buffer);
                    }
                    return "文件下载成功";
                } catch (Exception e) {
                    e.printStackTrace();
                } finally {
                    if (bufferedInputStream != null) {
                        try {
                            bufferedInputStream.close();
                        } catch (IOException e) {
                            return "文件下载失败,失败原因: " + e.getMessage();
                        }
                    }
                    if (fileInputStream != null) {
                        try {
                            fileInputStream.close();
                        } catch (IOException e) {
                            return "文件下载失败,失败原因: " + e.getMessage();
                        }
                    }
                }
            }
        }
        return "文件下载失败";
    }
}

curl -o a.jpg 'localhost:8080/download?file=qrcode_for_ambari.jpg'

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  148k    0  148k    0     0  11.3M      0 --:--:-- --:--:-- --:--:-- 12.0M

ls a.jpg

#http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#common-application-properties
#search multipart
spring.http.multipart.max-file-size=10MB
spring.http.multipart.max-request-size=10MB

package com.edurt.sli.sliss.config;
import org.springframework.boot.web.servlet.MultipartConfigFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import javax.servlet.MultipartConfigElement;

@Configuration
public class MultipartConfig {
    @Bean
    public MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        factory.setMaxFileSize("10240KB"); //KB,MB
        factory.setMaxRequestSize("102400KB");
        return factory.createMultipartConfig();
    }
}

mvn clean package -Dmaven.test.skip=true -X

java -jar target/spring-learn-integration-springboot-storage-1.0.0.jar