以下代码可以在JPEG、Docx、zip和其他几种文件格式上正常运行。然后我在mpg-filer上尝试,但是,我被一个我无法调试的"Error: write EPIPE“击中。使用try/catch构造也会导致未捕获的异常。
代码:
var fs = require('fs')
const { spawn } = require('child_process')
var file = '/path/to/some/file.jpg'
var rs = fs.createReadStream(file)
const exiftool = spawn('exiftool', ['-json', '-']);
var exif = ''
exiftool.stdout.on('data', function(chunk) {
exif += chunk
})
exiftool.on('close', function(code) {
console.log('Sourcefile: %s', JSON.parse(exif)[0].SourceFile)
})
exiftool.on('error', function(error) {
console.log('exiftool has error: %s', error)
})
rs.pipe(exiftool.stdin)
使用mpg-files时出现以下错误:
events.js:167
throw er; // Unhandled 'error' event
^
Error: write EPIPE
at WriteWrap.afterWrite [as oncomplete] (net.js:835:14)
Emitted 'error' event at:
at Socket.onerror (_stream_readable.js:687:12)
at Socket.emit (events.js:182:13)
at onwriteError (_stream_writable.js:431:12)
at onwrite (_stream_writable.js:456:5)
at _destroy (internal/streams/destroy.js:40:7)
at Socket._destroy (net.js:605:3)
at Socket.destroy (internal/streams/destroy.js:32:8)
at WriteWrap.afterWrite [as oncomplete] (net.js:837:10)
发布于 2018-08-14 18:58:51
注释编辑:由于在中发现的问题,更正了代码
当您尝试写入关闭的流时,可能会发生此类错误
Try/Catch不是处理流错误的方法,但你可以这样做:
rs.pipe(exiftool.stdin).on('error', function(e) {
console.log('rs.pipe has error: ' + e.message)
});
https://stackoverflow.com/questions/51839293
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