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檢索圖像,我使用GridFS的,所以我有我的monDB:從MongoDB的
fs.chunks:
{
"_id" : ObjectId("542e684a8a1cec178a172673"),
"n" : 1,
"data" : BinData(0,"2N6DSSfbCN/LLacNDYrJUQDEZgimMUwFpQGoJP0RU19Bi4PM82DjrUnKhE/P9v7P8ZveD1oDpFBM0iml9NE3WQmAvYFoG+nhD73Jm4N9b4LpylaAN5Ef+gVdgGSTAfSUwOikXoVick5pSQCkRmTCU5NT9VVfjHdAx74/ZhFRj+TIRjzlAhzkACBElzgMwGCo7tX+FYrpQLJ5KRmXiwFFwsNtHHzXiK1eu+CG1FumhGpA/qdG8CdDgD1xUHEcerMGO/eLGR9ML7ni/VjXxWzqp2j5DG2/WuKNv7xd3Kz/vr0MctJhuaBIl35YrKhdLnzqDa0uDa6bm4jz+eNyAI2hQbayGo4kVPFe8W7wFpY7qfBvnB9kbocxfZSdADDUNwYaydpT8lIcKEN9XfQJOYZvHp0El"),
"files_id" : ObjectId("542e684a8a1cec178a172671")
}
fs.files:
{
"_id" : ObjectId("542e65378axdeckhb0"),
"uploadDate" : ISODate("2012-11-01"),
"length" : 15673,
"chunkSize" : 33222,
"md5" : "f66e6654854a28e3672cfhds334d223b55a1"
}
我做:
var fileId = mongoose.Types.ObjectId(id);
var gridStore = new GridStore(db, fileId, 'r');
gridStore.open(function (err, gridStore) {
console.log(gridStore.uploadDate);
});
我:
2012-11-01
BUT我想顯示圖片 我嘗試類似的東西,但它根本不清楚:
app.get('/data/:imgtag', function(req, res) {
fileRepository.getFile(function(error,data) {
res.writeHead('200', {'Content-Type': 'image/png'});
res.end(data,'binary');
}, req.params.imgtag
);
});
app.listen(3000);
感謝您的幫助!
如果您'的console.log(數據)'和結果輸出與'2N6DSSfbCN'那麼你需要改變'res.end開始(數據, '二進制')''來res.end(數據, 'base64')' – mscdex 2014-10-10 18:04:06
感謝您的幫助。但我的問題是做gridstore.open和app.get之間的鏈接 – Carlos 2014-10-11 08:14:38