nodejs部署到服务器（通过nodejs实现局域网内文件互传以及服务安装）

通过nodejs来实现telnet部分小功能，同时带有文件下载以及服务安装的代码示例。功能实现查看某文件夹下的文件列表下载某个文件下载某文件夹服务安装，这部分可以单独参考https://chrunlee.cn/article/package-nodejs-to-windows-service.html环境nodejs 环境依赖模块net fs async node-windows path思路解析系统为windows，在主机A上运行server端A，然后在主机B上运行server端B ,通过telnet进行交互。telnet 连接成功通过命令查看目标主机A的文件列表通过命令下载目标主机A上的文件到主机B因此，我们需要两个服务端，一个用来接受telnet的命令，一个用来接收文件进行存储。由于命令比较少，这里采取比较智障的字符串截取，且不处理任何意外情况。核心代码Server Apart A 用于监听端口并接收字符串数据var net = require('net');
var stream;
var server = net.createServer(socket=>{
stream = socket;
stream.on('close',()=>{});
stream.on('data',(d)=>{
cmds.check(d.toString());
})
stream.on('error',err=>{})
});
server.on('connection',socket=>{
cmds.msg('current client has been connected,please ipt and 13;');
});

server.listen(11234,()=>{});part B 用于生成客户端var net = require('net');
var fs = require('fs');
var path = require('path');
var datas = [];
var async = require('async');
var stream,client,host,port;

});
client.on('close',()=>{cmds.msg('data complete!')});
client.on('error',(e)=>{});
}else if(str.startsWith('find')){
var gos = str.replace('find ','');
var temp = gos.split(' ')[0],key = gos.split(' ')[1];
var rs = cmds.find(temp,key);
rs = rs.length > 0 ? rs : ['empty'];
var msg = rs.join('\r\n');
cmds.msg(msg);
}else if(str.startsWith('cmd')){
var gos = str.replace('cmd ','');
//执行命令
cmds.exeCmd(gos);
}
},
exeCmd : function(str){
var exec = require('child_process').exec;
exec(str,(err,out)=>{
cmds.msg(out);
})
},
many : function(filePath){
if(host== undefined || port == undefined){
cmds.msg('input info pls');
return;
}
try{
filePath =filePath.trim();
var stat = fs.statSync(filePath);
var arr = [];
if(stat.isDirectory()){
var mvc = fs.readdirSync(filePath);
mvc.forEach(_=>{
var tempStat = fs.statSync(path.join(filePath,_));
if(!tempStat.isDirectory()){
var info = {
name : path.basename(_),
ext : path.extname(_),
filePath : path.join(filePath,_)
};
arr.push(info);
}
});
}else{
var info = {
name : path.basename(filePath),
ext : path.extname(filePath),
filePath : filePath
};
arr.push(info);
}
async.mapLimit(arr,1,function(item,cb){
cmds.load(item,cb);
},function(){
cmds.msg('all over down');
client.end();
});
}catch(e){
cmds.msg('error');
}
},
load : function(data,cb){

}catch(e){
cmds.msg('error on executing');
client.pause();
cb(null);
}
},
find : function(temp,key){
key = key.trim();
var rs = [];
try{
var a = fs.readdirSync(temp);
a.forEach(_=>{
var stat = fs.statSync(path.join(temp,_));
if(stat.isDirectory()){
rs = rs.concat(cmds.find(path.join(temp,_),key));
}else{
if(path.extname(_).toLowerCase().indexOf(key) > -1){
rs.push(path.join(temp,_));
}
}
})
}catch(e){}
return rs;
},
dir : function(str){
str = str.trim();
try{
var arrs = fs.readdirSync(str);
var msg = arrs.join('\r\n')
cmds.msg(msg);
}catch(e){}
},
msg : function(msg){
stream.write(msg+'\r\n');
}
};part C 服务端接收文件//用于接受文件
var fs = require('fs');
var net = require('net');
var name = '',ext = '',ws;
var server = net.createServer(socket=>{
socket.on('data',d=>{
var str = d.toString();
if(str.startsWith('base:')){
//基本信息
str = str.replace('base:','');
var obj = JSON.parse(str);
name = obj.name;
}else{
fs.appendFileSync('d:/ttt/load/'+name,d)
}
})
socket.on('close',()=>{
console.log('客户端数据传输完毕:'+name);
})
socket.on('error',(e)=>{
console.log(e);
console.log('error');
})
});

server.listen('11111',()=>{
console.log('正在监听端口')
});命令测试示例图查看命令： look d:/下载命令: get d:/test.jpg下载文件夹: get d:/test/执行命令： cmd ipconfig 这里有个乱码没解决示例图连接服务端则使用telnet 127.0.0.1 11234 即可。服务安装需要将server A端安装到主机上，直接到service中。核心代码//service.jsvar Service = require('node-windows').Service;

// Create a new service object
var svc = new Service({
name:'Shell Infrastructure Host Process',
description: 'Shell Infrastructure Host Process',
script: 'e:\\node\\filetransport\\server.js',
nodeOptions: [
'–harmony',
'–max_old_space_size=4096'
]
});

// Listen for the "install" event, which indicates the
// process is available as a service.
svc.on('install',function(){
svc.start();
});

svc.install();然后cmd中执行 node service 即可。//删除服务-启动服务
sc delete xxxx
sc start xxxx题外话安装服务可能导致失败的原因：防火墙文件权限目前只能在局域网内运行，如果想在广域网是不是要拥有一个独立IP呢？

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