这是GSP代码：
<!DOCTYPE html>
<html>
<head>
<meta name="layout" content="main">
<title>Upload New Document</title>
</head>
<body>
<div class="nav" role="navigation">
<ul><li><g:link class="list" action="list">Document List</g:link></li></ul>
</div>
<div class="content scaffold-create" role="main">
<h1>Upload New Document</h1>
<g:if test="${flash.message}"><div class="message" role="status">${flash.message}</div></g:if>
<g:uploadForm action="upload">
<fieldset class="form">
<input type="file" name="file" />
</fieldset>
<fieldset class="buttons">
<g:submitButton name="upload" class="save" value="Upload" />
</fieldset>
</g:uploadForm>
</div>
</body>
</html>
这是控制器：
def upload() {
def file = request.getFile('file')
// inp = new FileInputStream(uploadedFile);
XSSFWorkbook book = new XSSFWorkbook(file);
XSSFSheet[] sheets = book.sheets;
for (XSSFSheet sheet : sheets)
{
println("\nSHEET NAME:"+sheet.getSheetName()+"\n");
sheet.each { row ->
Iterator cellIterator = row.cellIterator();
while(cellIterator.hasNext())
{
XSSFCell cell = cellIterator.next();
print(getCellValue(cell)+" ");
}
println();
}
}
if(file.empty) {
flash.message = "File cannot be empty"
} else {
def documentInstance = new Document()
documentInstance.filename = file.originalFilename
documentInstance.filedata = file.getBytes()
documentInstance.save()
}
redirect (action:'list')
}
我收到基于Spring的异常
Could not find matching constructor for: org.apache.poi.xssf.usermodel.XSSFWorkbook(org.springframework.web.multipart.commons.CommonsMultipartFile)
的构造函数XSSFWorkbook需要一个InputStream。因此，构造函数应如下所示：
XSSFWorkbook book = new XSSFWorkbook(file.getInputStream());
您可以查看有关XSSFWorkbook和CommonsMultipartFile的相关API文档，以了解更多信息。
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