Unable to upload image in Spring Boot application
Having trouble uploading images in your Spring Boot application? don’t worry! PHP editor Baicao provides you with a solution. No matter what difficulty you face uploading images, you'll find the answer here. Continue reading our java Q&A to learn how to successfully upload images in a Spring Boot application. Let’s solve this problem together!
Question content
I developed a springboot application using react as the front end to upload images into a folder.
@postmapping(value = "/upload") public responseentity<?> uploadimage(@requestparam("user") string user, @requestparam("image") multipartfile file) { try { system.out.println("-------------------------------------------------------------------"); this.process(ioutils.tobytearray(file.getinputstream()), user, file.getoriginalfilename().substring(file.getoriginalfilename().lastindexof("."))); } catch (ioexception e) { // todo auto-generated catch block e.printstacktrace(); } return new responseentity<>("uploaded", httpstatus.ok);//userservice.uploadimagefile(user, file); } @async public void process(byte[] bs, string user, string ext) throws ioexception { string fname = user.substring(0, user.lastindexof("@")).concat(ext); // full path string filepath = path + file.separator + fname; system.out.println(fname + " and " + filepath); file f = new file(path); if (!f.exists()) { f.mkdir(); } file convertedfile = new file(filepath); fileoutputstream fos = new fileoutputstream(convertedfile); system.out.println("-----started------"); fos.write(bs); fos.close(); system.out.println("-----closed------"); }
I'm trying to upload an image into a folder. When uploading an image segmented file to a folder using file.getinputstream, I get the following error
org.springframework.web.multipart.support.StandardServletMultipartResolver[0;39m: Failed to perform cleanup of multipart items java.io.UncheckedIOException: Cannot delete D:\JS Projects\myapp\BackEnd\UserLoginSignUp\images\work\Tomcat-2\localhost\ROOT\upload_d31827cc_51e6_4901_b60e_6afdd0ee8a99_00000004.tmp at org.apache.tomcat.util.http.fileupload.disk.DiskFileItem.delete(DiskFileItem.java:431) at org.apache.catalina.core.ApplicationPart.delete(ApplicationPart.java:53) at org.springframework.web.multipart.support.StandardServletMultipartResolver.cleanupMultipart(StandardServletMultipartResolver.java:134) at org.springframework.web.servlet.DispatcherServlet.cleanupMultipart(DispatcherServlet.java:1251) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1108) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:965) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:555) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:623) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:481) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:390) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:833)
What may be the causes of the above errors and exceptions? How do we solve the above problems?
Workaround
Consider using files.copy()
, it will save you a lot of work.
public void saveFile(String directory, MultipartFile file) { if (file.isEmpty()) { return; } String fileName = file.getOriginalFilename(); if (Objects.isNull(fileName) || fileName.isEmpty()) { fileName = UUID.randomUUID().toString(); } try { Path path = Paths.get(directory); Files.copy(file.getInputStream(), path.resolve(fileName)); } catch (Exception e) { throw new RuntimeException(e); } }
The above is the detailed content of Unable to upload image in Spring Boot application. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)
