SpringBoot开发存储服务器

摘要：今天我们尝试整合，并决定建立一个非常简单的微服务，使用作为前端渲编程语言进行前端页面渲染基础环境技术版本创建项目初始化项目修改增加和的支持开发存储服务器一个简单的应用类添加接口

今天我们尝试Spring Boot整合Angular，并决定建立一个非常简单的Spring Boot微服务，使用Angular作为前端渲编程语言进行前端页面渲染.

初始化项目

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

修改pom.xml增加java和springboot的支持

    
        spring-learn-integration-springboot
        com.edurt.sli
        1.0.0
    

    4.0.0

    spring-learn-integration-springboot-storage

    SpringBoot开发存储服务器

    
        
            org.springframework.boot
            spring-boot-starter-web
        
    

    
        
            
                org.springframework.boot
                spring-boot-maven-plugin
                ${dependency.springboot.version}
                
                    true
                
            
            
                org.apache.maven.plugins
                maven-compiler-plugin
                ${plugin.maven.compiler.version}
                
                    ${system.java.version}
                    ${system.java.version}
                
            
        
    

一个简单的应用类

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 

 * http://www.apache.org/licenses/LICENSE-2.0
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.edurt.sli.sliss;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * 
 SpringBootStorageIntegration 
 * 
 Description : SpringBootStorageIntegration 
 * 
 Author : qianmoQ 
 * 
 Version : 1.0 
 * 
 Create Time : 2019-06-10 15:53 
 * 
 Author Email: qianmoQ 
 */
@SpringBootApplication
public class SpringBootStorageIntegration {

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

}

创建一个controller文件夹并在该文件夹下创建UploadController Rest API接口,我们提供一个简单的文件上传接口

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 

 * http://www.apache.org/licenses/LICENSE-2.0
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
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;

/**
 * 
 UploadController 
 * 
 Description : UploadController 
 * 
 Author : qianmoQ 
 * 
 Version : 1.0 
 * 
 Create Time : 2019-06-10 15:55 
 * 
 Author Email: qianmoQ 
 */
@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";
    }

}

修改SpringBootAngularIntegration类文件增加以下设置扫描路径,以便扫描Controller

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 

 * http://www.apache.org/licenses/LICENSE-2.0
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.edurt.sli.sliss;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

/**
 * 
 SpringBootStorageIntegration 
 * 
 Description : SpringBootStorageIntegration 
 * 
 Author : qianmoQ 
 * 
 Version : 1.0 
 * 
 Create Time : 2019-06-10 15:53 
 * 
 Author Email: qianmoQ 
 */
@SpringBootApplication
@ComponentScan(value = {
        "com.edurt.sli.sliss.controller"
})
public class SpringBootStorageIntegration {

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

}

在编译器中直接启动SpringBootStorageIntegration类文件即可,或者打包jar启动,打包命令mvn clean package

测试上传文件接口

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

返回结果

上传文件成功

测试查询文件接口

curl localhost:8080/upload

返回结果

["qrcode_for_ambari.jpg"]

测试删除接口

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

返回结果

删除文件qrcode_for_ambari.jpg成功

再次查询查看文件是否被删除

curl localhost:8080/upload

返回结果

[]

在controller文件夹下创建DownloadController Rest API接口,我们提供一个文件下载接口

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 

 * http://www.apache.org/licenses/LICENSE-2.0
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
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.*;

/**
 * 
 DownloadController 
 * 
 Description : DownloadController 
 * 
 Author : qianmoQ 
 * 
 Version : 1.0 
 * 
 Create Time : 2019-06-10 16:21 
 * 
 Author Email: qianmoQ 
 */
@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";
    }

}

测试下载文件

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

出现以下进度条

  % 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

查询是否下载到本地文件夹

ls a.jpg

返回结果

a.jpg

默认情况下，Spring Boot最大文件上传大小为1MB，您可以通过以下应用程序属性配置值：

配置文件

#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

代码配置,创建一个config文件夹,并在该文件夹下创建MultipartConfig

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 

 * http://www.apache.org/licenses/LICENSE-2.0
 * 

 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
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;

/**
 * 
 MultipartConfig 
 * 
 Description : MultipartConfig 
 * 
 Author : qianmoQ 
 * 
 Version : 1.0 
 * 
 Create Time : 2019-06-10 16:34 
 * 
 Author Email: qianmoQ 
 */
@Configuration
public class MultipartConfig {

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

}

打包数据

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

运行打包后的文件即可

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

GitHub

Gitee