SpringBoot开发存储服务器-白红宇

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.

基础环境

技术	版本
Java	1.8+
SpringBoot	1.5.x

创建项目

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复制代码

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}
                         
                    
               
          
     
    复制代码

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 
 */@SpringBootApplicationpublic class SpringBootStorageIntegration {    public static void main(String[] args) {        SpringApplication.run(SpringBootStorageIntegration.class, args);    }}复制代码

添加Rest API接口功能(提供上传服务)

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";    }}复制代码

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);    }}复制代码

启动服务,测试API接口可用性

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"复制代码

返回结果

上传文件成功复制代码

测试查询文件接口

curl localhost:8080/upload复制代码

返回结果

["qrcode_for_ambari.jpg"]复制代码

测试删除接口

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

返回结果

删除文件qrcode_for_ambari.jpg成功复制代码

再次查询查看文件是否被删除

curl localhost:8080/upload复制代码

返回结果

[]复制代码

增加下载文件支持

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";    }}复制代码

测试下载文件

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

出现以下进度条

% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current                                 Dload  Upload   Total   Spent    Left  Speed100  148k    0  148k    0     0  11.3M      0 --:--:-- --:--:-- --:--:-- 12.0M复制代码

查询是否下载到本地文件夹

ls a.jpg复制代码

返回结果

a.jpg复制代码

文件大小设置

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 multipartspring.http.multipart.max-file-size=10MBspring.http.multipart.max-request-size=10MB复制代码

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

打包文件部署

打包数据

mvn clean package -Dmaven.test.skip=true -X复制代码

运行打包后的文件即可

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

基础环境

创建项目

添加Rest API接口功能(提供上传服务)

启动服务,测试API接口可用性

增加下载文件支持

文件大小设置

打包文件部署

源码地址