本文实例为大家分享了springboot实现后台上传图片的具体代码,供大家参考,具体内容如下
1.先配置启动类
继承WebMvcConfigurer
重写方法
@SpringBootApplication //@MapperScan("com.example.demo.Mapper") public class DemoApplication implements WebMvcConfigurer { public static void main ( String [] args ) { SpringApplication . run ( DemoApplication . class , args ); } @Override public void addResourceHandlers ( ResourceHandlerRegistry registry ){ /* addResoureHandler:指的是对外暴露的访问路径 addResourceLocations:指的是内部文件放置的目录 */ registry . addResourceHandler ( "/imctemp-rainy/**" ). addResourceLocations ( "file:D:/image" ); } }2.添加一个UploadUtil文件上传工具类
public class UploadUtil { //源文件名 private String originalFilename ; //源文件后缀名 private String suffix ; //存入数据库里的tomcat虚拟路径 private String dbPath ; //文件大小 private long size ; //实际存储路径 private String realPath ; /** * 文件上传工具类 * @param attach * @param request * @param uploader 文件上传者 * @return */ public boolean doUpload ( MultipartFile attach , HttpServletRequest request , String uploader ){ if (! attach . isEmpty ()){ originalFilename = attach . getOriginalFilename (); System . out . println ( "==>上传的文件名:" + originalFilename ); suffix = originalFilename . substring ( originalFilename . lastIndexOf ( "." )); System . out . println ( "==>上传的文件后缀名:" + suffix ); size = attach . getSize (); System . out . println ( "==>上传文件的大小:" + size ); String currentFilename = System . currentTimeMillis ()+ UUID . randomUUID (). toString () + suffix ; System . out . println ( "==>存储的上传文件名:" + currentFilename ); realPath = "D:/image/" + uploader ; System . out . println ( "==>上传文件保存的真实路径:" + realPath ); File targetFile = new File ( realPath , currentFilename ); if (! targetFile . exists ()){ targetFile . mkdirs (); } try { attach . transferTo ( targetFile ); } catch ( Exception e ){ e . printStackTrace (); return false ; } realPath = realPath + "/" + currentFilename ; // dbPath = request.getContextPath() + "/" + uploader + "/" + new SimpleDateFormat("yyyy-MM-dd").format(new Date()) + "/" + currentFilename; dbPath = "/" + uploader + "/" + currentFilename ; return true ; } else { return false ; } } public String getUploadFile (){ return dbPath ; } }其中关于路径都需要改成自己存放图片的路径
3.Controller层
@RestController public class UserPhotoController { @RequestMapping ( value = "/upload" , method = RequestMethod . POST ) @ResponseBody public String testUpload ( @RequestParam ( "file" ) MultipartFile file , HttpServletRequest request ) { UploadUtil uploadUtil = new UploadUtil (); String fileName = "" ; if ( uploadUtil . doUpload ( file , request , "uploadImg" )) { fileName = uploadUtil . getUploadFile (); } else { fileName = "file" ; } return fileName ; } }
完成。
附上RunApi接口测试工具测试过程(测试工具大同小异都是差不多步骤(如postman))
Headers:
注意这里的Headers部分不要写任何东西。
如果之前是有Content-Type头信息, 那么就会上传失败.
参数选择form-data
key:后台规定的接收文件的名称参数(切记不是你传的图片名称)
(比如我是file)
key的格式选择为File
value: 自动变成 选择文件
点击发送
可以发现-上传图片成功(存到了你设置的路径中自动创建upload文件夹)
控制台也输出了你上传的图片信息
ok
大功告成
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原文链接:https://blog.csdn.net/qq_47805927/article/details/115864816
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