在grails中上传文件

在grails中上传文件

本文介绍了在grails中上传文件的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

 < g:form id =我的gsp上传了一个文件, updateurl =[action:'updateStatus',]> 
< g:textArea name =messagevalue =cols =3rows =1/>< br />
< g:textField id =tagFieldname =tagvalue =/>< br />
< input id =inputFieldtype =filename =myFileenctype =multipart / form-data/>
< / g:表格>

在我的控制器中,我有:

<$ p
$ def b = request.getFile('myFile')
如果(params.myFile){

$ b $ def $ update_status
}

请求获取文件失败并出现此错误:

 方法没有签名:org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestWrapper.getFile()适用于参数类型:(java.lang.String )values:[myFile] 

任何想法为什么这是因为我已经在使用getFile控制器工作正常。

解决方案

这里是工作文件提交:

表单(gsp)

 < form method =postenctype =multipart / form-data> 
< p>< input type ='file'name =cfile/>< / p>
< input type ='submit'>
< / form>

将提交文件存入'D:/ submitted_file'的控制器:

  def index(){
if(params.cfile){
if(params.cfile instanceof org.springframework.web。 multipart.commons.CommonsMultipartFile){
new FileOutputStream('d:/ submitted_file')。leftShift(params.cfile.getInputStream());
//params.cfile.transferTo(new File('D:/ submitted_file'));
} else {
log.error(错误的附件类型[$ {cfile.getClass()}]);





这对我有用(grails 2.0.4)

I am trying to upload a file in grails in my gsp I have:

<g:form id="update" url="[action: 'updateStatus',]">
     <g:textArea name="message" value="" cols="3" rows="1"/><br/>
     <g:textField id="tagField" name="tag" value=""/><br/>
     <input id="inputField" type="file" name="myFile" enctype="multipart/form-data" />
     <g:submitButton name="Update Status"/>
 </g:form>

In my controller i have:

 def updateStatus(String message) {

        if (params.myFile){
            def f = request.getFile('myFile')

        }

The request get file is failing with this error:

No signature of method: org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestWrapper.getFile() is applicable for argument types: (java.lang.String) values: [myFile]

Any ideas why this is as I have and are using getFile in my other controllers which works fine.

解决方案

here is working file submit:

the form (gsp)

<form method="post" enctype="multipart/form-data">
<p><input type='file' name="cfile"/></p>
<input type='submit'>
</form>

the controller that will store submitted file into 'D:/submitted_file':

def index() {
    if(params.cfile){
        if(params.cfile instanceof org.springframework.web.multipart.commons.CommonsMultipartFile){
            new FileOutputStream('d:/submitted_file').leftShift( params.cfile.getInputStream() );
            //params.cfile.transferTo(new File('D:/submitted_file'));
        }else{
            log.error("wrong attachment type [${cfile.getClass()}]");
        }
    }
}

this works for me (grails 2.0.4)

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08-05 13:47