我正在使用form-data
将客户PC上的图片上传到Spring MVC Server。
更新页面:
<!DOCTYPE html > <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Spring MVC - Upload File</title> </head> <body> <form id="form1" method="post" action="/upload" enctype="multipart/form-data" accept-charset="utf-8"> <!-- File input --> <input name="file" id="file" type="file" /><br/> <input type="submit" value="Upload" /> </form> </body> </html>
这是 Spring Controller
@RequestMapping(value = "upload", method = RequestMethod.POST) public @ResponseBody String provaUpdate(MultipartHttpServletRequest request,Principal p,HttpServletResponse response)throws IOException { String result=""; LocalFileManager mLocalFileManager = LocalFileManager.get(); Iterator<String> iterator = request.getFileNames(); while(iterator.hasNext()) { System.out.println("iterator.next()="+iterator.next()); } System.out.println("request.getFileMap().isEmpty()??"+request.getFileMap().isEmpty()); // mLocalFileManager.saveLocalData(g,g.getPicturesCount(), request.getFile("new").getInputStream()); return result; }
所以,当我运行它时,它只是打印:
request.getFileMap().isEmpty()??true
然后,似乎没有上传任何文件,但如果我得到request.getInputStream()
我可以写一个TXT文件显示:
------WebKitFormBoundaryWG8vA5PuTFFxPBqK Content-Disposition: form-data; name="file"; filename="1.jpg" Content-Type: image/jpeg �� JFIF ��ICC_PROFILE 蠠 mntrRGB XYZ ٠ $ acsp �� ӭ )B9 desc D ybXYZ bTRC Ԡ dmdd ࠠ ɧXYZ h gTRC Ԡ lumi | meas //(Symbols) Long ETC, so the picture is sent !! ------WebKitFormBoundaryWG8vA5PuTFFxPBqK--
所以,似乎图片发送正确,但MultipartHttpServletRequest
无法获取文件。
这是我的错误?
答案 0 :(得分:0)
我认为,您spring configuration xml
文件中的条目可能会丢失。
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- below properties can be configured as per your need -->
<property name="maxUploadSize" value="5000000" />
<property name="maxInMemorySize" value="5000000" />
</bean>
答案 1 :(得分:0)
错误在于我正在与Thymeleaf合作,因此形式不同。
解决了改变:
1-创建一个包含MultipartFile的类,如下所示:
public class Images { MultipartFile image; public MultipartFile getImage() { return image; } public void setImage(MultipartFile image) { this.image = image; } }
2-使用Thymeleaf的Spring服务器的正确表单代码:
<form id="myform" action="#" th:action="@{/upload}" th:object="${Images}" method="POST" modelAttribute="Images" enctype="multipart/form-data"> <input type="file" th:field="${Images.image}" name="file"/> <input type="submit" value="Upload"/> </form>
最后是正确的Controller方法:
@RequestMapping(value = "upload", method = RequestMethod.POST) public String addVocabularyValadate( @ModelAttribute("Images") Images images,BindingResult bindingResult, Model model) throws IOException { System.out.println("inputstream Nombre!"+images.getImage().getOriginalFilename()); if(bindingResult.hasFieldErrors() == true) return "error"; else return "upload OK!"; }