SpringMVC_RequestPart_文件上传_example.rar

package controller; import java.io.IOException; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.Part; 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.RequestParam; import org.springframework.web.bind.annotation.RequestPart; import org.springframework.web.multipart.MultipartFile; //@RequestPart 是根据 'Content-Type' 的 //@RequestParam是根据 Converter or PropertyEditor的 @Controller public class FileUploadController { @RequestMapping(value="/fileUpload", method=RequestMethod.POST) public String handleFormUpload(@RequestParam("name") String name,MultipartFile file) throws IOException { if(!file.isEmpty()) { String filename = file.getOriginalFilename(); System.out.println(filename); byte[] bytes = file.getBytes(); return "uploadSuccess"; } else return "uploadFailed"; } /* * The main difference is that when the method argument is not a String, * @RequestParam relies on type conversion via a registered Converter or PropertyEditor * while @RequestPart relies on HttpMessageConverters * taking into consideration the 'Content-Type' header of * the request part. @RequestParam is likely to be used with name-value * form fields while @RequestPart is likely to be used with parts containing * more complex content (e.g. JSON, XML). */ @RequestMapping(value="/fileUpload2", method=RequestMethod.POST) public String handleFormUpload2(HttpServletRequest req,@RequestParam("name") String name, @RequestPart Part file) throws IOException { if(file.getSize() != 0) { /* * 取得"/"表示的tomcat中的实际路径 * http://<host>:<port>/<contextPath>/index.html would be mapped, * where <contextPath> corresponds to the context path of this ServletContext. */ String uploadPath = req.getServletContext().getRealPath("/"); System.out.println("------ upLoadPath:" + uploadPath + " ------"); //从header中解译出上传的文件名 String value = file.getHeader("content-disposition"); System.out.println("------ value:" + value + " ------"); String filename = value.substring(value.lastIndexOf("=") + 2, value.length() - 1); System.out.println("------ filename:" + filename + " ------"); //end System.out.println("------ the file size is:" + file.getSize() + "B ------"); System.out.println("------ " + file.getName() + " ------"); //将文件写到硬盘上 file.write(uploadPath + filename); return "uploadSuccess"; } else return "uploadFailed"; } }