Spring Boot搭建文件上传服务的方法

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(); 

									  /** 

									   * 设置最大上传文件的大小，默认是10MB 

									   */

									  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(); 

									 } 

									}