[英]Nodejs - running external process
Need to build a back-end service using node-js which does the following. 需要使用node-js构建后端服务,该服务将执行以下操作。
mongodb
) with new filename and status as saved 将文件保存在磁盘上,并使用保存的新文件名和状态更新数据库( mongodb
) How do we call # 3 from node.js - it could be system call like python parse_file.py filename
我们如何从node.js调用#3-它可能是系统调用,例如python parse_file.py filename
app.post('/upload',function(req,res, next){
// what should go here to call the process
res.writeHead(201, {'Content-type': 'text/plain'});
res.end("File uploaded.");
}
});
You can use require('child_process').spawn()
or require('child_process').exec()
to spawn a child process. 您可以使用require('child_process').spawn()
或require('child_process').exec()
生成子进程。 The docs for those can be found at https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_child_process_spawn_command_args_options 这些文档可以在https://nodejs.org/dist/latest-v6.x/docs/api/child_process.html#child_process_child_process_spawn_command_args_options中找到
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