基于stm32设计的环境监测服务系统.zip（毕设/课设/竞赛/实训/项目开发）

package top.duanhong.emims.controller.rest.remote; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.io.PrintWriter; import java.net.ServerSocket; import java.net.Socket; import java.util.HashMap; import java.util.LinkedHashMap; import java.util.LinkedList; import java.util.List; import java.util.Map; /** * socket服务 * @author Administrator */ public class Gprs{ //private static List<Socket> clients = new LinkedList<Socket>(); /** * */ private static Map<String, Socket> clients=new LinkedHashMap<String, Socket>(); static PrintWriter pw = null; static FileWriter fw = null; public static void main(String[] args) { int port = 10001; try { ServerSocket server = new ServerSocket(port); while (true) { // 获得客户端连接 // 阻塞式方法 System.out.println("准备阻塞..."); final Socket client = server.accept(); System.out.println("阻塞完成..."); new Thread(new Runnable() { @Override public void run() { try { InputStream is = client.getInputStream(); //获取输出流 给客服的写数据 OutputStream os = client.getOutputStream(); byte[] buffer = new byte[1024]; int len = -1; System.out.println("准备read..."); while ((len = is.read(buffer)) != -1) { String text=new String(buffer,0,len); System.out.println(text); System.out.println("read完成..."); if(text.startsWith("#")) { clients.put(text, client); os.write("认证成功".getBytes()); }else{ os.write("收到了你的请求".getBytes()); // String[] split = text.split(":"); // String key="#"+split[0]; // String content=split[1]; // 关联文件 File file = new File("c:\\123.txt"); if(!file.exists()){ // 判断文件不存在就new新文件,写数据 try { file.createNewFile(); // java IO流和文件关联 pw = new PrintWriter(file); pw.print(text + "\t"); pw.println(); pw.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } }else{ // 判断文件存在,就以FileWriter文件追加的方式写文件 try { fw = new FileWriter("c:\\123.txt",true); fw.write(text + "\r\n"); fw.flush(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } // Socket s = clients.get(key); // if(s!=null){ // OutputStream output = s.getOutputStream(); // output.write(content.getBytes()); // } } } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } }).start(); } } catch (Exception e) { e.printStackTrace(); } } }