Java利用串口编程技术操作继电器(三)
c final long serialVersionUID = 1L;
/**
* @see HttpServlet#HttpServlet()
*/
public RunServlet() {
super();
}
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
this.doPost(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
* response)
*/
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
// String code = "O(00,20,1)E";
String address = request.getParameter("address"); // 地址
String state = request.getParameter("state"); // 状态
String bofile = request.getParameter("file"); // 视频地址
if (address != null && state != null) {
runSerial(address, state, bofile);
} else {
address = "00";
state = "0";
runSerial(address, state, bofile);
}
System.out.println("bofile:" + bofile);
}
// 运行串口
public void runSerial(String address, String state, String bofile) {
if (address != null && state != null) {
String PORT_NAME = "COM1";
String code = "O(00," + address + "," + state + ")E";
DSerialPort sp = new DSerialPort();
sp.listPort();
sp.selectPort(PORT_NAME);
sp.write(code);
/* if (bofile != null) { */
if (state.equals("1")) {
play(bofile);
}
/* } */
sp.startRead(1);
}
}
// 播放视频
public void play(String path) {
System.out.println("path:" + path);
// String
// potplayer="D:/The entertainment software/PotPlayer/PotPlayerMini64.exe";
String mediaPath = "C:/MPlayer_Windows/mplayer/MPlayer.exe"; // 文件路径
// 调用mplayer命令行
String cmd = " -vo directx identify wid String.valueOf(false) -colorkey 0x030303 -slave -osdlevel String.valueOf(1)"
+ " -fullscreen";
try {
Process rn = Runtime.getRuntime().exec(
mediaPath + " " + path + " " + cmd); // 在单独的进程中执行指定命令和变量
/*
* Process rn = Runtime.getRuntime().exec( potplayer + " " + path);
* // 在单独的进程中执行指定命令和变量
*/
System.out.println("视频开始播放");
} catch (IOException e1) {
e1.printStackTrace();
return;
}
}
}
我这个是再加了一个播放视频的
说的很简单，要是有不懂的，我会的，可以来和我探讨哦，QQ在左上角