我有存储库类,我想在将产品详细信息添加到存储库之前将来自MultipartFile的图像存储到webapp / resources / images目录中?
@Override
public void addProduct(Product product) {
Resource resource = resourceLoader.getResource("file:webapp/resources/images");
MultipartFile proudctImage = product.getProudctImage();
try {
proudctImage.transferTo(new File(resource.getFile()+proudctImage.getOriginalFilename()));
} catch (IOException e) {
throw new RuntimeException(e);
}
listOfProducts.add(product);
}
我的存储库类是ResourceLoaderAware。我收到fileNotFoundException,“imagesDesert.jpg”是我试图上传的图片
java.io.FileNotFoundException: webapp\resources\imagesDesert.jpg (The system cannot find the path specified)
答案 0 :(得分:11)
这个控制器对我来说很好。
来源:https://askgif.com/blog/126/how-can-i-upload-image-using-spring-mvc-java/
试试这个
package net.viralpatel.spring3.controller;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import net.viralpatel.spring3.form.FileUploadForm;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.multipart.MultipartFile;
@Controller
public class FileUploadController {
//private String saveDirectory = "D:/Test/Upload/"; //Here I Added
private String saveDirectory = null; //Here I Added
@RequestMapping(value = "/show", method = RequestMethod.GET)
public String displayForm() {
return "file_upload_form";
}
@SuppressWarnings("null")
@RequestMapping(value = "/save", method = RequestMethod.POST)
public String save(
@ModelAttribute("uploadForm") FileUploadForm uploadForm,
Model map,HttpServletRequest request) throws IllegalStateException, IOException{
List<MultipartFile> files = uploadForm.getFiles();
List<String> fileUrl = new ArrayList<String>();;
String fileName2 = null;
fileName2 = request.getSession().getServletContext().getRealPath("/");
saveDirectory = fileName2+"images\\";
List<String> fileNames = new ArrayList<String>();
//System.out.println("user directory : "+System.getProperty("user.dir"));
System.out.println("applied directory : " + saveDirectory);
if(null != files && files.size() > 0) {
for (MultipartFile multipartFile : files) {
String fileName = multipartFile.getOriginalFilename();
System.out.println("applied directory : " + saveDirectory+fileName);
if(!"".equalsIgnoreCase(fileName)){
//Handle file content - multipartFile.getInputStream()
fileUrl.add(new String(saveDirectory + fileName));
multipartFile.transferTo(new File(saveDirectory + fileName)); //Here I Added
fileNames.add(fileName);
}
//fileNames.add(fileName);
//Handle file content - multipartFile.getInputStream()
//multipartFile.transferTo(new File(saveDirectory + multipartFile.getOriginalFilename())); //Here I Added
}
}
map.addAttribute("files", fileNames);
map.addAttribute("imageurl",fileUrl);
return "file_upload_success";
}
}
答案 1 :(得分:4)
最后我能够解决这个问题,我们不需要指定文件:前缀,而且默认情况下resourceLoader.getResource()
将在我们的Web应用程序的根目录中查找资源,因此无需指定webapp
文件夹名称。所以最后以下代码对我有用
@Override
public void addProduct(Product product) {
MultipartFile proudctImage = product.getProudctImage();
if (!proudctImage.isEmpty()) {
try {
proudctImage.transferTo(resourceLoader.getResource("resources/images/"+product.getProductId()+".png").getFile());
} catch (Exception e) {
throw new RuntimeException("Product Image saving failed", e);
}
}
listOfProducts.add(product);
}