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這篇文章將為大家詳細(xì)講解有關(guān)SpringBoot中怎么實(shí)現(xiàn)圖片上傳,文章內(nèi)容質(zhì)量較高,因此小編分享給大家做個(gè)參考,希望大家閱讀完這篇文章后對(duì)相關(guān)知識(shí)有一定的了解。
1、先貼圖片上傳工具類
package com.prereadweb.utils; import java.io.File; import java.io.FileOutputStream; import java.util.UUID; public class FileTool { /** * @Function: 圖片上傳 * @author: YangXueFeng * @Date: 2019/4/18 14:13 */ public static void uploadFiles(byte[] file, String filePath, String fileName) throws Exception { File targetFile = new File(filePath); if (!targetFile.exists()) { targetFile.mkdirs(); } FileOutputStream out = new FileOutputStream(filePath + fileName); out.write(file); out.flush(); out.close(); } /** * @Function: 創(chuàng)建新的文件名 * @author: YangXueFeng * @Date: 2019/4/17 17:57 */ public static String renameToUUID(String fileName) { return UUID.randomUUID() + "." + fileName.substring(fileName.lastIndexOf(".") + 1); } }
2、contoller層
@PostMapping("/postfile") public Object fileUpload(@RequestParam(value = "userImg", required = false) MultipartFile file, @RequestParam(value = "userId", required = false) Long userId) { return personalService.fileUpload(file, userId); }
此處提一下@RequestParam注解
value:前臺(tái)所傳參數(shù)的名稱
required:它有兩個(gè)參數(shù),true/false,默認(rèn)是true,如果設(shè)置的是true的,客戶端如果傳值為空的話,訪問此接口會(huì)報(bào)500異常,如果是false的話,客戶端傳值為空,會(huì)默認(rèn)給參數(shù)賦值null
3、service層
@Override public Map<String, Object> fileUpload(MultipartFile file, Long userId) { Map<String, Object> map = new HashMap<>(); if (Util.isEmpty(file)) { System.out.println("文件為空空"); map.put("code", UserStatusEnum.EMPTY.intKey()); map.put("msg", UserStatusEnum.EMPTY.value()); return map; } UserEntity user = userMapper.fetchUser(userId); if(Util.isEmpty(user)){ map.put("code", UserStatusEnum.USER_NOT_EXISTENCE.intKey()); map.put("msg", UserStatusEnum.USER_NOT_EXISTENCE.value()); return map; } String fileName = file.getOriginalFilename(); fileName = FileTool.renameToUUID(fileName); try { FileTool.uploadFiles(file.getBytes(), uploadConfig.getUploadPath(), fileName); } catch (Exception e) { } if (Util.isEmpty(fileName)) { map.put("code", UserStatusEnum.USER_NOT_EXISTENCE.intKey()); map.put("msg", UserStatusEnum.USER_NOT_EXISTENCE.value()); return map; } Map<String, Object> returnMap = new HashMap<>(); String url = "/static/" + fileName; updateUrl(userId, url); returnMap.put("imageUrl", url); map.put("code", UserStatusEnum.SUCCESS.intKey()); map.put("msg", UserStatusEnum.SUCCESS.value()); map.put("data", returnMap); return map; }
4、設(shè)置圖片訪問路徑映射
preread: #文件上傳目錄(注意Linux和Windows上的目錄結(jié)構(gòu)不同) uploadPath: E:/image/
5、配置文件上傳路徑
package com.prereadweb.config.upload; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @Component @ConfigurationProperties(prefix="preread") public class PreReadUploadConfig { //上傳路徑 private String uploadPath; public String getUploadPath() { return uploadPath; } public void setUploadPath(String uploadPath) { this.uploadPath = uploadPath; } }
6、配置映射路徑
package com.prereadweb.config.upload; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry; import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; @ComponentScan @Configuration public class WebConfigurer extends WebMvcConfigurerAdapter { @Autowired PreReadUploadConfig uploadConfig; @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/static/**").addResourceLocations("file:///"+uploadConfig.getUploadPath()); } }
7、此處需要導(dǎo)入一個(gè)jar報(bào)
<!-- 配置 --> <dependency> <groupId> org.springframework.boot </groupId> <artifactId> spring-boot-configuration-processor </artifactId> <optional> true </optional> </dependency>
8、postman測(cè)試接口
9、此時(shí)配置完成
圖片的存儲(chǔ)路徑在:E:/image/
訪問路徑:http://127.0.0.1:8080/static/0fa7481d-4fec-42c3-a716-514feff73707.jpg
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