例如:
1. Test1.txt其base64:VGhpcyBpcyB0ZXN0MS4 =
2. Test2.txt其base64:VGhpcyBpcyBUZXN0Mi4 =
我的代码:
var busboy = new Busboy({ headers: req.headers });
var base64data = [];
busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
var output = stream.PassThrough();
var chunk = [];
console.log('File: ' + filename + ', mimetype: ' + mimetype);
file.pipe(base64.encode()).pipe(output);
output.on('data', function(data) {
chunk.push(data);
console.log('Chunk: ' + chunk);
});
output.on('end', function(){
base64data.push(Buffer.concat(chunk));
console.log('Data1: ' + base64data);
});
}).on('finish', function(){
console.log('Data2: ' + base64data);
})
输出:
File: Test1.txt, mimetype: text/plain
File: Test2.txt, mimetype: text/plain
Chunk: VGhpcyBpcyB0ZXN0
Chunk: VGhpcyBpcyBUZXN0
Chunk: VGhpcyBpcyB0ZXN0,MS4=
Chunk: VGhpcyBpcyBUZXN0,Mi4=
Data2:
Data1: VGhpcyBpcyB0ZXN0MS4=
Data1: VGhpcyBpcyB0ZXN0MS4=,VGhpcyBpcyBUZXN0Mi4=
为什么Data2为空?如何修改此代码?请帮忙!感谢〜
我尝试在file.event(data)中使用Buffer.toString('base64'),但它只能转换文本内容,图片无法转换?答案 0 :(得分:2)
您不需要那些额外的流。但问题是额外的流'end
事件是在下一个tick上发出的(因此,在busboy的finish
事件之后)。
您应该可以将代码简化为:
var busboy = new Busboy({ headers: req.headers });
var base64data = [];
busboy.on('file', function(fieldname, file, filename, encoding, mimetype) {
console.log('File: ' + filename + ', mimetype: ' + mimetype);
var buffer = '';
file.setEncoding('base64');
file.on('data', function(data) {
// `data` is now a base64-encoded chunk of file data
buffer += data;
}).on('end', function() {
base64data.push(buffer);
});
}).on('finish', function(){
console.log('Data2: ' + base64data);
})