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我正在上传文件并向用户显示文件名,文件日期和文件大小。如何转换Grails中的字节文件大小
唯一的问题是,当我显示文件大小,它正在以字节为单位显示所以4 MB的文件将是400万
这是无益的。然而有人告诉我Grails有一个默认转换器。我看着他们的图书馆找不到任何东西。 有没有简单的方法在Grails中转换它?
这里是我的上传方法控制器:
def upload() {
def uploadedFile = request.getFile('file')
if(uploadedFile.isEmpty())
{
flash.message = "File cannot be empty"
}
else
{
def documentInstance = new Document()
documentInstance.filename = uploadedFile.originalFilename
//fileSize
documentInstance.fileSize = uploadedFile.size
documentInstance.fullPath = grailsApplication.config.uploadFolder + documentInstance.filename
uploadedFile.transferTo(new File(documentInstance.fullPath))
documentInstance.save()
}
redirect (action: 'list')
}
和我GSP视图表,该表是用户看到
<table class="table-bordered" data-url="data1.json" data-height="299">
<thead>
<tr>
<g:sortableColumn property="filename" title="Filename" />
<g:sortableColumn property="fileSize" title="file Size" />
<g:sortableColumn property="uploadDate" title="Upload Date" />
</tr>
</thead>
<tbody>
<g:each in="${documentInstanceList}" status="i" var="documentInstance">
<tr class="${(i % 2) == 0 ? 'even' : 'odd'}">
<td><g:link action="download" id="${documentInstance.id}">${documentInstance.filename}</g:link></td>
<td><g:link id="${documentInstance.id}">${documentInstance.fileSize}></g:link></td>
<td><g:formatDate date="${documentInstance.uploadDate}" /></td>
<td><span class="button"><g:actionSubmit class="delete" controller="Document" action="delete" value="${message(code: 'default.button.delete.label', default: 'Delete')}" onclick="return confirm('${message(code: 'default.button.delete.confirm.message', default: 'Are you sure?')}');" /></span></td>
</tr>
</g:each>
</tbody>
你的意思是像'org.apache.commons.io.FileUtils#byteCountToDisplaySize(fileSize)'? – cfrick 2015-04-03 19:47:55
目前还不清楚你想要将4000000转换为。如果文件有4000000字节,你想显示什么? – 2015-04-03 19:50:03
4 mb for examle @JeffScottBrown – Mozein 2015-04-03 19:51:05