帮我用我的笔记本电脑连接我的arduino以太网盾 [英] Help me connect my arduino ethernet shield with my laptop using java

问题描述

我正在尝试连接我的arduino以太网盾和java应用程序进行通信。我无法实现任何人都能提供的帮助。 
 
这是我的java代码
 
 / * 
 *要更改此许可证标题，请在项目属性中选择许可标题。 
 *要更改此模板文件，请选择工具|模板
 *并在编辑器中打开模板。 
 * / 
包客户; 
 
 import java.io. *; 
 import java.net。*; 
 import java.util.logging.Level; 
 import java.util.logging.Logger; 
 import javafx.application.Application; 
 import javafx.geometry.Insets; 
 import javafx.geometry.Pos; 
 import javafx.scene.Scene; 
 import javafx.scene.control.Label; 
 import javafx.scene.control.ScrollPane; 
 import javafx.scene.control.TextArea; 
 import javafx.scene.control.TextField; 
 import javafx.scene.layout.BorderPane; 
 import javafx.stage.Stage; 
 
 / ** 
 * 
 * @author amanuel Negash 
 * / 
 
 
公共类客户扩展申请{
 // IO流
 DataOutputStream toServer = null; 
 DataInputStream fromServer = null; 
 
 @Override //覆盖Application类中的start方法
 public void start（Stage primaryStage）{
 //面板p保存标签和文本字段
 BorderPane paneForTextField = new BorderPane（）; 
 paneForTextField.setPadding（new Insets（5,5,5,5））; 
 paneForTextField.setStyle（ -  fx-border-color：green）; 
 paneForTextField.setLeft（new Label（输入半径：））; 
 
 TextField tf = new TextField（）; 
 tf.setAlignment（Pos.BOTTOM_RIGHT）; 
 paneForTextField.setCenter（tf）; 
 
 BorderPane mainPane = new BorderPane（）; 
 //显示内容的文本区域
 TextArea ta = new TextArea（）; 
 mainPane.setCenter（new ScrollPane（ta））; 
 mainPane.setTop（paneForTextField）; 
 
 //创建一个场景并将其放置在舞台上
场景场景=新场景（mainPane，450,200）; 
 primaryStage.setTitle（Client）; //设置舞台标题
 primaryStage.setScene（scene）; //将场景放在舞台
 primaryStage.show（）; //显示阶段
 
 tf.setOnAction（e  - > {
 try {
 //从文本字段获取半径
 double radius = Double。 parseDouble（tf.getText（）。trim（））; 
 
 //将半径发送到服务器
 toServer.writeDouble（radius）; 
 toServer.flush（）; 
 
 //从服务器获取区域
 double area = fromServer.readDouble（）; 
 
 //显示到文本区域
 ta.appendText （Radius is+ radius +\ n）; 
 ta.appendText（从服务器收到的区域是
 +区域+'\ n'）; 
} 
 catch（IOException ex）{
 System.err.println（ex）; 
} 
}）; 
 try {
 SocketAddress sockaddr = new InetSocketAddress（172.17.31.47，59637）; 
 //创建套接字
套接字套接字= new Socket（）; 
 //连接10秒超时
 socket.connect（sockaddr，999999999）;; 
 
 //创建一个输入流以从服务器接收数据
 fromServer = new DataInputStream（socket.getInputStream（））; 
 
 //创建输出流以将数据发送到服务器
 toServer = new DataOutputStream（socket.getOutputStream（））; 
 socket.close（）; 
} 
 catch（IOException ex）{
 ta.appendText（ex.toString（）+'\ n'）; 
} 
} 
} 
 
 
 
 
 
 
 
 
 ********************************************* ************************************************** ************************************************** *********************** 
以下是我的etherent arduino代码
 
 #include< ethernet.h> 
 #include< spi.h> 
 byte mac [] = {0x90,0xf2,0xda，0x0e，0x98,0x34}; 
 
 EthernetClient客户端; 
 void setup（）{
 Serial.begin（9600）; 
 Ethernet.begin（mac）; 
 server.begin（）; 
延迟（1000）; 
 Serial.print（server is at）; 
 Serial.println（Ethernet.localIP（））; 
 server.begin（）; 
 
 
} 
 void loop（）{
 //Serial.println (\"loop）; 
 client = server.available（）; 
 char来电; 
 
 if（client）
 {
 Serial.println（Client connected）; 
 while（client.connected（））{
 if（client.available（））{
 incoming = client.read（）; 
 Serial.print（传入）; 
 client.print（传入）; 
} 
} 
 Serial.println（客户端断开连接）; 
} 
 client.stop（）; 
} 
 
 我尝试过： 
 
我已禁用防火墙，我可以ping服务器。

解决方案

没有真正发生的事情，java客户端结束时说

错误：java.net.SocketTimeoutException：接收超时

I am trying to connect my arduino ethernet shield and a java application to communicate. I could not achieve that any one can help.

this is my java code

/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package client;

import java.io.*;
import java.net.*;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.layout.BorderPane;
import javafx.stage.Stage;

/**
*
* @author amanuel Negash
*/


public class Client extends Application {
// IO streams
DataOutputStream toServer = null;
DataInputStream fromServer = null;

@Override // Override the start method in the Application class
public void start(Stage primaryStage) {
// Panel p to hold the label and text field
BorderPane paneForTextField = new BorderPane();
paneForTextField.setPadding(new Insets(5, 5, 5, 5));
paneForTextField.setStyle("-fx-border-color: green");
paneForTextField.setLeft(new Label("Enter a radius: "));

TextField tf = new TextField();
tf.setAlignment(Pos.BOTTOM_RIGHT);
paneForTextField.setCenter(tf);

BorderPane mainPane = new BorderPane();
// Text area to display contents
TextArea ta = new TextArea();
mainPane.setCenter(new ScrollPane(ta));
mainPane.setTop(paneForTextField);

// Create a scene and place it in the stage
Scene scene = new Scene(mainPane, 450, 200);
primaryStage.setTitle("Client"); // Set the stage title
primaryStage.setScene(scene); // Place the scene in the stage
primaryStage.show(); // Display the stage

tf.setOnAction(e -> {
try {
// Get the radius from the text field
double radius = Double.parseDouble(tf.getText().trim());

// Send the radius to the server
toServer.writeDouble(radius);
toServer.flush();

// Get area from the server
double area = fromServer.readDouble();

// Display to the text area
ta.appendText("Radius is " + radius + "\n");
ta.appendText("Area received from the server is "
+ area + '\n');
}
catch (IOException ex) {
System.err.println(ex);
}
});
try {
SocketAddress sockaddr = new InetSocketAddress("172.17.31.47", 59637);
// Create your socket
Socket socket = new Socket();
// Connect with 10 s timeout
socket.connect(sockaddr, 999999999);;

// Create an input stream to receive data from the server
fromServer = new DataInputStream(socket.getInputStream());

// Create an output stream to send data to the server
toServer = new DataOutputStream(socket.getOutputStream());
socket.close();
}
catch (IOException ex) {
ta.appendText(ex.toString() + '\n');
}
}
}








****************************************************************************************************************************************************************************
the following is my etherent arduino code

#include <ethernet.h>
#include <spi.h>
byte mac[] = {0x90, 0xf2, 0xda, 0x0e, 0x98, 0x34 };

EthernetClient client;
void setup() {
Serial.begin(9600);
Ethernet.begin(mac);
server.begin();
delay(1000);
Serial.print("server is at ");
Serial.println(Ethernet.localIP());
server.begin();


}
void loop() {
//Serial.println("loop");
client = server.available();
char incoming;

if (client)
{
Serial.println("Client connected");
while(client.connected()) {
if (client.available()) {
incoming = client.read();
Serial.print(incoming);
client.print(incoming);
}
}
Serial.println("Client disconnected");
}
client.stop();
}

What I have tried:

I have disabled the firewall and I can ping the server.

解决方案

nothing really happens the java client ends saying the

Error:java.net.SocketTimeoutException: Receive timed out

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