我在一个项目中要找到网上的网络打印机（可能不只一台），并需要在向网络打印机传送和打印文件，其实挺简单的，只是做的麻烦，也许你用得着-in a project to find online network printers (may be more than one channel), and the need to network printers and print file transmission, in fact quite simple, but only the trouble, y