Я хочу прочитать html код arduino веб-сервера.
Я могу сделать веб-сервер просто из пример 4 . код ниже.
#include <SoftwareSerial.h>
#include "WiFly.h"
#define SSID "yum2"
#define KEY "yum000000"
// check your access point's security mode, mine was WPA20-PSK
// if yours is different you'll need to change the AUTH constant, see the file WiFly.h for avalable security codes
#define AUTH WIFLY_AUTH_WPA2_PSK
int flag = 0;
// Pins' connection
// Arduino WiFly
// 2 <----> TX
// 3 <----> RX
SoftwareSerial wiflyUart(2, 3); // create a WiFi shield serial object
WiFly wifly(&wiflyUart); // pass the wifi siheld serial object to the WiFly class
void setup()
{
wiflyUart.begin(9600); // start wifi shield uart port
Serial.begin(9600); // start the arduino serial port
Serial.println("--------- WIFLY Webserver --------");
// wait for initilization of wifly
delay(1000);
wifly.reset(); // reset the shield
delay(1000);
//set WiFly params
wifly.sendCommand("set ip local 80\r"); // set the local comm port to 80
delay(100);
wifly.sendCommand("set comm remote 0\r"); // do not send a default string when a connection opens
delay(100);
wifly.sendCommand("set comm open *OPEN*\r"); // set the string that the wifi shield will output when a connection is opened
delay(100);
Serial.println("Join " SSID );
if (wifly.join(SSID, KEY, AUTH)) {
Serial.println("OK");
} else {
Serial.println("Failed");
}
delay(5000);
wifly.sendCommand("get ip\r");
char c;
while (wifly.receive((uint8_t *)&c, 1, 300) > 0) { // print the response from the get ip command
Serial.print((char)c);
}
Serial.println("Web server ready");
}
void loop()
{
if(wifly.available())
{ // the wifi shield has data available
if(wiflyUart.find("*OPEN*")) // see if the data available is from an open connection by looking for the *OPEN* string
{
Serial.println("New Browser Request!");
delay(1000); // delay enough time for the browser to complete sending its HTTP request string
// send HTTP header
wiflyUart.println("HTTP/1.1 200 OK");
wiflyUart.println("Content-Type: text/html; charset=UTF-8");
wiflyUart.println("Content-Length: 244"); // length of HTML code
wiflyUart.println("Connection: close");
wiflyUart.println();
// send webpage's HTML code
wiflyUart.print("<html>");
wiflyUart.print("<head>");
wiflyUart.print("<title>My WiFI Shield Webpage</title>");
wiflyUart.print("</head>");
wiflyUart.print("<body>");
wiflyUart.print("<h1>Hello World!</h1>");
wiflyUart.print("<h3>10 20 30 40 50</h3>");
wiflyUart.print("<a href=\"http://yahoo.com\">Yahoo!</a> <a href=\"http://google.com\">Google</a>");
wiflyUart.print("<br/><button>My Button</button>");
wiflyUart.print("</body>");
wiflyUart.print("</html>");
}
}
}
веб-сервер работает хорошо.
Я написал простой код Android для чтения html ниже.
package com.example.http;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
public class MainActivity extends AppCompatActivity {
private TextView tv;
String urlAddress = "192.168.0.10"; // doesn't show
// String urlAddress = "http://www.kma.go.kr/weather/main.jsp#1159068000"; // work well
Handler handler = new Handler();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
tv = (TextView)findViewById(R.id.textView1);
Button b = (Button)findViewById(R.id.button1);
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
loadHtml();
}
});
}
void loadHtml() {
Thread t = new Thread(new Runnable() {
@Override
public void run() {
final StringBuffer sb = new StringBuffer();
try {
URL url = new URL(urlAddress);
HttpURLConnection conn =
(HttpURLConnection) url.openConnection();
if (conn != null) {
conn.setConnectTimeout(2000);
conn.setUseCaches(false);
if (conn.getResponseCode()
== HttpURLConnection.HTTP_OK) {
BufferedReader br
= new BufferedReader(new InputStreamReader
(conn.getInputStream()));
while (true) {
String line = br.readLine();
if (line == null) break;
sb.append(line + "\n");
}
br.close();
}
conn.disconnect();
}
Log.d("test", sb.toString());
handler.post(new Runnable() {
@Override
public void run() {
tv.setText(sb.toString());
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
});
t.start();
}
}
Очень хорошо работает с String urlAddress = "http://www.kma.go.kr/weather/main.jsp#1159068000";
но это не показывает при использовании
String urlAddress = "192.168.0.10"; вместо одного.
192.168.0.10 выделен ip arduino от DHCP, который я могу проверить на последовательном мониторе.
есть ли способ прочитать html с веб-сервера arduino ??