bal*_*erc 22 spring apache-commons apache-commons-fileupload spring-boot
我试图使用'流'Apache Commons File Upload API上传大文件.
我使用Apache Commons File Uploader而不是默认的Spring Multipart上传器的原因是当我们上传非常大的文件大小(~2GB)时它失败了.我在一个GIS应用程序上工作,这种文件上传很常见.
我的文件上传控制器的完整代码如下:
@Controller
public class FileUploadController {
@RequestMapping(value="/upload", method=RequestMethod.POST)
public void upload(HttpServletRequest request) {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (!isMultipart) {
// Inform user about invalid request
return;
}
//String filename = request.getParameter("name");
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload();
// Parse the request
try {
FileItemIterator iter = upload.getItemIterator(request);
while (iter.hasNext()) {
FileItemStream item = iter.next();
String name = item.getFieldName();
InputStream stream = item.openStream();
if (item.isFormField()) {
System.out.println("Form field " + name + " with value " + Streams.asString(stream) + " detected.");
} else {
System.out.println("File field " + name + " with file name " + item.getName() + " detected.");
// Process the input stream
OutputStream out = new FileOutputStream("incoming.gz");
IOUtils.copy(stream, out);
stream.close();
out.close();
}
}
}catch (FileUploadException e){
e.printStackTrace();
}catch (IOException e){
e.printStackTrace();
}
}
@RequestMapping(value = "/uploader", method = RequestMethod.GET)
public ModelAndView uploaderPage() {
ModelAndView model = new ModelAndView();
model.setViewName("uploader");
return model;
}
}
问题是getItemIterator(request)始终返回一个没有任何项(即iter.hasNext())总是返回的迭代器false.
我的application.properties文件如下:
spring.datasource.driverClassName=org.postgresql.Driver
spring.datasource.url=jdbc:postgresql://localhost:19095/authdb
spring.datasource.username=georbis
spring.datasource.password=asdf123
logging.level.org.springframework.web=DEBUG
spring.jpa.hibernate.ddl-auto=update
multipart.maxFileSize: 128000MB
multipart.maxRequestSize: 128000MB
server.port=19091
JSP视图/uploader如下:
<html>
<body>
<form method="POST" enctype="multipart/form-data" action="/upload">
File to upload: <input type="file" name="file"><br />
Name: <input type="text" name="name"><br /> <br />
Press here to upload the file!<input type="submit" value="Upload">
<input type="hidden" name="${_csrf.parameterName}" value="${_csrf.token}" />
</form>
</body>
</html>
我可能做错了什么？
bal*_*erc 28
感谢M.Deinum的一些非常有用的评论,我设法解决了这个问题.我已经清理了一些原始帖子,并将此作为完整答案发布,以备将来参考.
我犯的第一个错误并没有禁用MultipartResolverSpring提供的默认值.这最终在解析器中处理HttpServeletRequest并因此在我的控制器可以对其进行操作之前消耗它.
由于M. Deinum,禁用它的方法如下:
multipart.enabled=false
然而,在此之后还有另一个隐藏的陷阱等着我.一旦我禁用默认的多部分解析器,我在尝试上传时就开始出现以下错误:
Fri Sep 25 20:23:47 IST 2015
There was an unexpected error (type=Method Not Allowed, status=405).
Request method 'POST' not supported
在我的安全配置中,我启用了CSRF保护.这需要我以下列方式发送我的POST请求:
<html>
<body>
<form method="POST" enctype="multipart/form-data" action="/upload?${_csrf.parameterName}=${_csrf.token}">
<input type="file" name="file"><br>
<input type="submit" value="Upload">
</form>
</body>
</html>
我还修改了我的控制器:
@Controller
public class FileUploadController {
@RequestMapping(value="/upload", method=RequestMethod.POST)
public @ResponseBody Response<String> upload(HttpServletRequest request) {
try {
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
if (!isMultipart) {
// Inform user about invalid request
Response<String> responseObject = new Response<String>(false, "Not a multipart request.", "");
return responseObject;
}
// Create a new file upload handler
ServletFileUpload upload = new ServletFileUpload();
// Parse the request
FileItemIterator iter = upload.getItemIterator(request);
while (iter.hasNext()) {
FileItemStream item = iter.next();
String name = item.getFieldName();
InputStream stream = item.openStream();
if (!item.isFormField()) {
String filename = item.getName();
// Process the input stream
OutputStream out = new FileOutputStream(filename);
IOUtils.copy(stream, out);
stream.close();
out.close();
}
}
} catch (FileUploadException e) {
return new Response<String>(false, "File upload error", e.toString());
} catch (IOException e) {
return new Response<String>(false, "Internal server IO error", e.toString());
}
return new Response<String>(true, "Success", "");
}
@RequestMapping(value = "/uploader", method = RequestMethod.GET)
public ModelAndView uploaderPage() {
ModelAndView model = new ModelAndView();
model.setViewName("uploader");
return model;
}
}
其中Response只是我使用的一个简单的通用响应类型:
public class Response<T> {
/** Boolean indicating if request succeeded **/
private boolean status;
/** Message indicating error if any **/
private String message;
/** Additional data that is part of this response **/
private T data;
public Response(boolean status, String message, T data) {
this.status = status;
this.message = message;
this.data = data;
}
// Setters and getters
...
}
The*_*ner 10
如果您使用的是最新版本的spring boot(我使用的是2.0.0.M7),则属性名称已更改.Spring开始使用特定于技术的名称
spring.servlet.multipart.maxFileSize = -1
spring.servlet.multipart.maxRequestSize = -1
spring.servlet.multipart.enabled = FALSE
如果由于多个实现处于活动状态而导致StreamClosed异常,则最后一个选项允许您禁用默认的spring实现
| 归档时间： |
|
| 查看次数： |
26015 次 |
| 最近记录： |