Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import android.util.Log;

public class Main {
    private static final String TAG = "HttpHelper";
    private static HttpClient httpClient;

    public static String httpGet(String url) throws Exception {
        ensureHttpClient();

        HttpGet request = new HttpGet(url);
        HttpResponse response = httpClient.execute(request);
        if (response != null) {
            int statusCode = response.getStatusLine().getStatusCode();
            if (statusCode == 200)
                return stringFromInputStream(response.getEntity().getContent());
            else
                throw new Exception("Got error code " + statusCode + " from server");
        }

        throw new Exception("Unable to connect to server");
    }

    private static void ensureHttpClient() {
        if (httpClient != null)
            return;

        BasicHttpParams params = new BasicHttpParams();
        HttpConnectionParams.setConnectionTimeout(params, 45000);
        HttpConnectionParams.setSoTimeout(params, 30000);

        SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", new PlainSocketFactory(), 80));
        try {
            registry.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));
        } catch (Exception e) {
            Log.w(TAG, "Unable to register HTTPS socket factory: " + e.getLocalizedMessage());
        }

        ThreadSafeClientConnManager connManager = new ThreadSafeClientConnManager(params, registry);
        httpClient = new DefaultHttpClient(connManager, params);
    }

    private static String stringFromInputStream(InputStream is) throws IOException {
        char[] buf = new char[1024];
        StringBuilder out = new StringBuilder();

        Reader in = new InputStreamReader(is, "UTF-8");

        int bin;
        while ((bin = in.read(buf, 0, buf.length)) >= 0) {
            out.append(buf, 0, bin);
        }

        return out.toString();
    }
}