java 使用 Spring MVC 和 Html 上传图片
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Image Upload Using Spring MVC and Html
提问by ragemusker
I keep getting this error when i do with my spring mvc code i am trying to do image upload using spring mvc what is the arguments I am missing.
当我使用 spring mvc 代码时，我不断收到此错误我正在尝试使用 spring mvc 进行图像上传，我缺少什么参数。
org.springframework.web.util.NestedServletException: Request processing failed;
nested exception is java.lang.IllegalArgumentException: argument type mismatch
java.lang.IllegalArgumentException: argument type mismatch
...
My dispatcher servlet is
我的调度程序 servlet 是
<context:component-scan base-package="com.ImageUploadSpring.Controller" />
<!-- <bean id="simpleHandler" class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/> -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver" />
<bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
<property name="mappings">
<props>
<prop key="/Upload.html">FileUpload</prop>
</props>
</property>
</bean>
<bean id="FileUpload" class="com.ImageUploadSpring.Controller.FileUpload">
<property name="commandName" value="ImageUpload"/>
<property name="commandClass" value="com.ImageUploadSpring.Bean.UploadItem"/>
<property name="formView" value="ImageUpload"/>
<property name="successView" value="message"/>
</bean>
<bean id="FileUpload" class="com.ImageUploadSpring.Controller.FileUpload"></bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/view/" />
<property name="suffix" value=".html" />
</bean>
controller class is
控制器类是
public class FileUpload extends SimpleFormController{
@RequestMapping(value = "/Upload.html", method = RequestMethod.POST)
protected ModelAndView onSubmit(HttpServletRequest request,
HttpServletResponse response, Object command, BindException errors,HttpSession session) {
System.out.println("inside submit method");
try{
UploadItem item=(UploadItem)command;
MultipartFile file = item.getFile();
InputStream inputStream = null;
OutputStream outputStream = null;
if (file.getSize() > 0) {
inputStream = file.getInputStream();
outputStream = new FileOutputStream("D:/UploadedFiles/Images/"
+ file.getOriginalFilename());
System.out.println(file.getOriginalFilename());
int readBytes = 0;
byte[] buffer = new byte[8192];
while ((readBytes = inputStream.read(buffer, 0, 8192)) != -1) {
outputStream.write(buffer, 0, readBytes);
}
outputStream.close();
inputStream.close();
session.setAttribute("uploadFile", "D:/UploadedFiles/Images/"
+ file.getOriginalFilename());
}
}catch (Exception e) {
e.printStackTrace();
}
return new ModelAndView("message");
}
@Override
protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder)
throws ServletException {
binder.registerCustomEditor(byte[].class, new ByteArrayMultipartFileEditor());
}
And my html page is
我的 html 页面是
<form name="ImageUpload" action="/ImageUploadSpring/service/Upload.html" method="POST" enctype="multipart/form-data">
<div>
Select images:
<input type="text" id="box"/>
<input type="file" id="UploadFile" name="UploadFile" onchange="CopyMe(this,'box');" accept="image/*" size="40" style="width: 91px;" multiple />
<br><br>
<input type="submit" value="Upload" /><br><br>
</div>
</form>
采纳答案by Viral Patel
While defining <input type="file">you have specified the name name="UploadFile". Whereas in your UploadItem command object the file attribute is file(guessing from item.getFile()). Are you sure you are correctly mapping the filename?
在定义时<input type="file">您已经指定了名称name="UploadFile"。而在您的 UploadItem 命令对象中，文件属性是file（从 item.getFile() 猜测）。您确定正确映射文件名吗？
Please refer to this tutorialfor working tutorial on Spring MVC File Upload
有关 Spring MVC 文件上传的工作教程，请参阅本教程
回答by Amith
Try this:
试试这个：
protected ModelAndView onSubmit(HttpServletRequest request,HttpServletResponse response,@RequestParam(value="UploadFile") MultipartFile image, BindException errors,HttpSession session)
回答by phnix
this tutorial http://www.journaldev.com/2573/spring-mvc-file-upload-example-tutorial-single-and-multiple-filesalso works well for me. it is quite simple. the important is when you use
本教程http://www.journaldev.com/2573/spring-mvc-file-upload-example-tutorial-single-and-multiple-files也适用于我。这很简单。重要的是当你使用
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="100000" />
</bean>
, don't forget to add commons-fileupload to your pom dependencies.
，不要忘记将 commons-fileupload 添加到您的 pom 依赖项中。
