Spring Boot如何搭建文件上传服务

这篇文章主要介绍Spring Boot如何搭建文件上传服务，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！

本文实例为大家分享了spring Boot搭建文件上传服务的具体代码，供大家参考，具体内容如下

一、服务端

pom.xml

<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">   <modelVersion>4.0.0</modelVersion>  <parent>   <groupId>org.springframework.boot</groupId>   <artifactId>spring-boot-starter-parent</artifactId>   <version>1.3.3.RELEASE</version>  </parent>   <groupId>com.test.spring</groupId>  <artifactId>spring-boot</artifactId>  <version>1.0.0</version>  <packaging>jar</packaging>   <name>spring-boot</name>  <url>http://maven.apache.org</url>   <properties>   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>   <maven.compiler.source>1.8</maven.compiler.source>   <maven.compiler.target>1.8</maven.compiler.target>  </properties>   <dependencies>   <dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-WEB</artifactId>   </dependency>   <dependency>    <groupId>commons-io</groupId>    <artifactId>commons-io</artifactId>    <version>2.4</version>   </dependency>  </dependencies>  </project>

package com.test.spring;  import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream;  import javax.servlet.MultipartConfigElement; import javax.servlet.http.httpservletRequest; import javax.servlet.http.Part;  import org.apache.commons.io.IOUtils; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.EnableAutoConfiguration; import org.springframework.boot.context.embedded.MultipartConfigFactory; import org.springframework.context.annotation.Bean; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody;  @Controller @EnableAutoConfiguration public class FileUploadController {  @RequestMapping(value="/upload", method=RequestMethod.POST)  @ResponseBody  public String upload(HttpServletRequest request) throws Exception  {   Part part = request.getPart("uploadfile");      InputStream input = part.getInputStream();      OutputStream output = new FileOutputStream("d:/tmp/" + part.getSubmittedFileName());   IOUtils.copy(input, output);      output.close();   input.close();      return "OK";  }   @Bean  MultipartConfigElement createMultipartConfigElement()  {   MultipartConfigFactory mcf = new MultipartConfigFactory();      mcf.setMaxFileSize("50MB");   return mcf.createMultipartConfig();  }    public static void main(String[] args) throws Exception {   SpringApplication.run(FileUploadController.class, args);  } }

注意：spring-boot-starter-web 1.3.3.RELEASE 依赖的servlet是3.1

二、客户端

客户端使用httpclient调用

先配置maven依赖

<dependency>  <groupId>org.apache.httpcomponents</groupId>  <artifactId>httpclient</artifactId>  <version>4.5.2</version> </dependency> <dependency>  <groupId>org.apache.httpcomponents</groupId>  <artifactId>httpmime</artifactId>  <version>4.5.2</version> </dependency>

测试代码

package com.test.upload;  import java.io.File;  import org.apache.http.HttpEntity; import org.apache.http.client.methods.CloseableHttpResponse; import org.apache.http.client.methods.HttpPost; import org.apache.http.entity.mime.MultipartEntityBuilder; import org.apache.http.impl.client.CloseableHttpClient; import org.apache.http.impl.client.HttpClients; import org.apache.http.util.EntityUtils;  public class HttpUpload {  public static void main(String[] args)throws Exception  {   String url = "http://127.0.0.1:8080/upload";   CloseableHttpClient client = HttpClients.createDefault();      HttpPost httppost = new HttpPost(url);      MultipartEntityBuilder builder = MultipartEntityBuilder.create();   builder.addBinaryBody("uploadfile", new File("D:/develop/apache-karaf-3.0.4.zip"));      HttpEntity reqEntity = builder.build();      httppost.setEntity(reqEntity);      CloseableHttpResponse resp = client.execute(httppost);      String str = EntityUtils.toString(resp.getEntity());   System.out.println(str);      resp.close();   client.close();  } }

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