jsp 页面
注意：1、 method="post"
2、enctype="multipart/form-data"
3、<input name="file" id="password" type="file" />
4、当指定requestMapping单独为upload的时候，发现当URL中单独只有upload时它的method会被解析为GET，会报异常。
当修改form提交的action名称，即把upload修改为其他名称，或者不单独为"项目名/upload"就不会有这个问题。当然，修改后要修改相应的requesetMapping。
这就是解决方法
这就是解决方法
<form class="form-horizontal" action="fileupload" method="post" enctype="multipart/form-data">
<p style="color:red;">
${null==requestScope.msg?"":requestScope.msg}
</p>
<fieldset>
<div class="input-prepend" title="Password" data-rel="tooltip">
<span class="add-on"><i class="icon-lock"></i></span><input class="input-large span10" name="file" id="password" type="file" />
</div>
<div class="clearfix"></div>
<div class="input-prepend">
<label class="remember" for="remember"><input type="checkbox" id="remember" />记住用户</label>
</div>
<div class="clearfix"></div>
<p class="center span5">
<button type="submit" class="btn btn-primary">提交</button>
</p>
</fieldset>
</form>
2、SpringMVC配置文件中增加
<!-- 文件上传 --> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8" /> <property name="maxUploadSize" value="10485760000" /> <property name="maxInMemorySize" value="40960" /> </bean>
3、加jar包 commons-io-2.1.jar，commons-fileupload-1.2.2.jar
4、后台Action
@Controller
public class FireUp {
@RequestMapping(value = "fileupload")
public String fileupload(@RequestParam(value = "file", required = false) MultipartFile file, HttpServletRequest request, ModelMap model) {
String path = request.getSession().getServletContext().getRealPath("upload");
String fileName = file.getOriginalFilename(); System.out.println("文件上传"+path+"--"+fileName); File targetFile = new File(path, fileName); if(!targetFile.exists()){ targetFile.mkdirs(); } //保存 try { file.transferTo(targetFile); } catch (Exception e) { e.printStackTrace(); } model.addAttribute("fileUrl", request.getContextPath()+"/upload/"+fileName);
return "result"; } }