Gralis文件上传

Gsp文件中如下<g:form method="post" action="uploadImage" enctype="multipart/form-data" >            <div name="headImage" />                            </td>                         </tr>            </table>            </div>            <div value="上传"> </span>             </div>        </g:form>action 中def uploadImage={        def headImage = request.getFile("headImage")        if(!headImage.empty){            def filedir=new File("web-app/uploadImage")            if(!filedir.exists()){                filedir.mkdir()            }            def temFile=new File(filedir,((Admin)session.getAttribute("nowAdmin")).getUserName()+".jpg")            headImage.transferTo(temFile)            println (temFile.getName())            println(temFile.exists())            render(view:"adminCenter")        }else{            flash.message="file is not empty!!"            render(view:"adminCenter")        }    }

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