Android http 的使用

package www.yiba.com.wifisdk.http; import android.os.Build; import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import javax.net.ssl.HttpsURLConnection; public class HttpUtil { private static final int TIMEOUT_IN_MILLIONS = 25000; /** * Get请求，获得返回数据 * @param urlStr * @return * @throws Exception */ public static String doGet(String urlStr , Callback callback) { URL url = null; URLConnection conn = null; InputStream is = null; ByteArrayOutputStream baos = null; try { url = new URL(urlStr); int responseCode = -1; if (urlStr.toLowerCase().startsWith("https")) { conn = url.openConnection(); ((HttpsURLConnection) conn).setRequestMethod("GET"); conn.setReadTimeout(TIMEOUT_IN_MILLIONS); conn.setConnectTimeout(TIMEOUT_IN_MILLIONS); conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); if (Build.VERSION.SDK != null && Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf conn.setRequestProperty("Connection", "close"); } responseCode = ((HttpsURLConnection) conn).getResponseCode(); } else { conn = url.openConnection(); ((HttpURLConnection) conn).setRequestMethod("GET"); conn.setReadTimeout(TIMEOUT_IN_MILLIONS); conn.setConnectTimeout(TIMEOUT_IN_MILLIONS); conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); if (Build.VERSION.SDK != null && Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf conn.setRequestProperty("Connection", "close"); } responseCode = ((HttpURLConnection) conn).getResponseCode(); } if (responseCode == 200) { is = conn.getInputStream(); baos = new ByteArrayOutputStream(); int len = -1; byte[] buf = new byte[128]; while ((len = is.read(buf)) != -1) { baos.write(buf, 0, len); } baos.flush(); if ( callback != null ){ callback.ok( baos.toString() ); } return baos.toString(); } else { if ( callback != null ){ callback.fail(); } throw new RuntimeException(" responseCode is not 200 ... "); } } catch (Exception e) { if ( callback != null ){ callback.timeOut(); } e.printStackTrace(); } finally { try { if (is != null) is.close(); } catch (IOException e) { } try { if (baos != null) baos.close(); } catch (IOException e) { } if (conn != null) { if (urlStr.toLowerCase().startsWith("https")) { ((HttpsURLConnection) conn).disconnect(); } else { ((HttpURLConnection) conn).disconnect(); } } } return null; } public static String doPost(String url, String param , Callback callback ) { PrintWriter out = null; BufferedReader in = null; String result = ""; URLConnection conn = null; try { URL realUrl = new URL(url); //打开和URL之间的连接 conn = realUrl.openConnection(); //设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); if (url.toLowerCase().startsWith("https")) { ((HttpsURLConnection) conn).setRequestMethod("POST"); } else { ((HttpURLConnection) conn).setRequestMethod("POST"); } conn.setRequestProperty("charset", "utf-8"); conn.setUseCaches(false); //发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); conn.setReadTimeout(TIMEOUT_IN_MILLIONS); conn.setConnectTimeout(TIMEOUT_IN_MILLIONS); if (param != null && !param.trim().equals("")) { // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数 out.print(param); // flush输出流的缓冲 out.flush(); } int responseCode = ((HttpURLConnection) conn).getResponseCode(); if ( responseCode == 200 ){ // 定义BufferedReader输入流来读取URL的响应 in = new BufferedReader( new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } if ( callback != null ){ callback.ok( result ); } }else { if ( callback != null ){ callback.fail(); } } } catch (Exception e) { if ( callback != null ){ callback.timeOut(); } e.printStackTrace(); } finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } if (conn != null) { if (url.toLowerCase().startsWith("https")) { ((HttpsURLConnection) conn).disconnect(); } else { ((HttpURLConnection) conn).disconnect(); } } } return result; } public interface Callback{ void ok( String result ) ; void fail(); void timeOut() ; } } 

package www.yiba.com.analytics.http; /** * Created by ${zyj} on 2016/8/18. */ public class HttpCall { private ResponseType httpQuestType ; private String result ; public ResponseType getHttpQuestType() { return httpQuestType; } public void setHttpQuestType(ResponseType httpQuestType) { this.httpQuestType = httpQuestType; } public String getResult() { return result; } public void setResult(String result) { this.result = result; } } 

package www.yiba.com.analytics.http; /** * Created by ${zyj} on 2016/8/18. */ public enum ResponseType { OK("请求成功") , FAIL("请求失败") , TIMEOUT("请求超时") ; private String name ; private ResponseType(String name ){ this.name = name ; } public String getName() { return name; } } 

package www.yiba.com.analytics.http; import android.os.Build; import java.io.BufferedReader; import java.io.ByteArrayOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.HttpURLConnection; import java.net.URL; import java.net.URLConnection; import javax.net.ssl.HttpsURLConnection; public class HttpUtil { private static final int TIMEOUT_IN_MILLIONS = 25000; /** * Get请求，获得返回数据 * @param urlStr * @return * @throws Exception */ public static HttpCall doGet(String urlStr , Callback callback) { URL url = null; URLConnection conn = null; InputStream is = null; ByteArrayOutputStream baos = null; HttpCall httpCall = new HttpCall() ; try { url = new URL(urlStr); int responseCode = -1; if (urlStr.toLowerCase().startsWith("https")) { conn = url.openConnection(); ((HttpsURLConnection) conn).setRequestMethod("GET"); conn.setReadTimeout(TIMEOUT_IN_MILLIONS); conn.setConnectTimeout(TIMEOUT_IN_MILLIONS); conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); if (Build.VERSION.SDK != null && Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf conn.setRequestProperty("Connection", "close"); } responseCode = ((HttpsURLConnection) conn).getResponseCode(); } else { conn = url.openConnection(); ((HttpURLConnection) conn).setRequestMethod("GET"); conn.setReadTimeout(TIMEOUT_IN_MILLIONS); conn.setConnectTimeout(TIMEOUT_IN_MILLIONS); conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); if (Build.VERSION.SDK != null && Build.VERSION.SDK_INT > 13) {//http://www.tuicool.com/articles/7FrMVf conn.setRequestProperty("Connection", "close"); } responseCode = ((HttpURLConnection) conn).getResponseCode(); } if (responseCode == 200) { is = conn.getInputStream(); baos = new ByteArrayOutputStream(); int len = -1; byte[] buf = new byte[128]; while ((len = is.read(buf)) != -1) { baos.write(buf, 0, len); } baos.flush(); if ( callback != null ){ callback.ok( baos.toString() ); } if ( httpCall != null ){ httpCall.setHttpQuestType( ResponseType.OK ); httpCall.setResult( baos.toString() ); } } else { if ( callback != null ){ callback.fail(); } if ( httpCall != null ){ httpCall.setHttpQuestType( ResponseType.FAIL ); httpCall.setResult( "" ); } } } catch (Exception e) { if ( callback != null ){ callback.timeOut(); } if ( httpCall != null ){ httpCall.setHttpQuestType( ResponseType.TIMEOUT ); httpCall.setResult( "" ); } e.printStackTrace(); } finally { try { if (is != null) is.close(); } catch (IOException e) { } try { if (baos != null) baos.close(); } catch (IOException e) { } if (conn != null) { if (urlStr.toLowerCase().startsWith("https")) { ((HttpsURLConnection) conn).disconnect(); } else { ((HttpURLConnection) conn).disconnect(); } } return httpCall ; } } public static HttpCall doPost(String url, String param , Callback callback ) { PrintWriter out = null; BufferedReader in = null; String result = ""; URLConnection conn = null; HttpCall httpCall = new HttpCall() ; try { URL realUrl = new URL(url); //打开和URL之间的连接 conn = realUrl.openConnection(); //设置通用的请求属性 conn.setRequestProperty("accept", "*/*"); conn.setRequestProperty("connection", "Keep-Alive"); conn.setRequestProperty("Content-Type", "application/json"); if (url.toLowerCase().startsWith("https")) { ((HttpsURLConnection) conn).setRequestMethod("POST"); } else { ((HttpURLConnection) conn).setRequestMethod("POST"); } conn.setRequestProperty("charset", "utf-8"); conn.setUseCaches(false); //发送POST请求必须设置如下两行 conn.setDoOutput(true); conn.setDoInput(true); conn.setReadTimeout(TIMEOUT_IN_MILLIONS); conn.setConnectTimeout(TIMEOUT_IN_MILLIONS); if (param != null && !param.trim().equals("")) { // 获取URLConnection对象对应的输出流 out = new PrintWriter(conn.getOutputStream()); // 发送请求参数 out.print(param); // flush输出流的缓冲 out.flush(); } int responseCode = ((HttpURLConnection) conn).getResponseCode(); if ( responseCode == 200 ){ // 定义BufferedReader输入流来读取URL的响应 in = new BufferedReader( new InputStreamReader(conn.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } if ( callback != null ){ callback.ok( result ); } if ( httpCall != null ){ httpCall.setHttpQuestType( ResponseType.OK ); httpCall.setResult( result ); } }else { if ( callback != null ){ callback.fail(); } if ( httpCall != null ){ httpCall.setHttpQuestType( ResponseType.FAIL ); httpCall.setResult( "" ); } } } catch (Exception e) { if ( callback != null ){ callback.timeOut(); } if ( httpCall != null ){ httpCall.setHttpQuestType( ResponseType.TIMEOUT ); httpCall.setResult( "" ); } e.printStackTrace(); } finally { try { if (out != null) { out.close(); } if (in != null) { in.close(); } } catch (IOException ex) { ex.printStackTrace(); } if (conn != null) { if (url.toLowerCase().startsWith("https")) { ((HttpsURLConnection) conn).disconnect(); } else { ((HttpURLConnection) conn).disconnect(); } } return httpCall ; } } public interface Callback{ void ok(String result) ; void fail(); void timeOut() ; } } 

private void httpGet(){ //get 用法1 new Thread(new Runnable() { @Override public void run() { HttpUtil.doGet("http://www.baidu.com", new HttpUtil.Callback() { @Override public void ok(String result) { //请求成功 } @Override public void fail() { //请求失败 } @Override public void timeOut() { //请求超时 } }) ; } }) ; //get 用法2 new Thread(new Runnable() { @Override public void run() { HttpCall httpCall = HttpUtil.doGet( "http://www.baidu.com" , null ) ; switch ( httpCall.getHttpQuestType() ){ case OK: //请求成功 break; case FAIL: //请求失败 break; case TIMEOUT: //请求超时 break; } } }) ; } private void httpPost(){ //post 用法1 new Thread(new Runnable() { @Override public void run() { HttpUtil.doPost("http://www.baidu.com", "post请求参数" , new HttpUtil.Callback() { @Override public void ok(String result) { //请求成功 } @Override public void fail() { //请求失败 } @Override public void timeOut() { //请求超时 } }) ; } }) ; //post 用法2 new Thread(new Runnable() { @Override public void run() { HttpCall httpCall = HttpUtil.doPost( "http://www.baidu.com" , "post请求参数" , null ) ; switch ( httpCall.getHttpQuestType() ){ case OK: //请求成功 break; case FAIL: //请求失败 break; case TIMEOUT: //请求超时 break; } } }) ; } 

//从网络下载bitmap private Bitmap downLoadBitmapFromNet( String urlString ){ InputStream inputStream = null ; HttpURLConnection conn = null ; Bitmap bitmap ; try { URL url = new URL( urlString ) ; conn = (HttpURLConnection) url.openConnection(); inputStream = new BufferedInputStream( conn.getInputStream() ) ; inputStream.mark( inputStream.available() ); //压缩图片 BitmapFactory.Options options = new BitmapFactory.Options() ; options.inJustDecodeBounds = true ; BitmapFactory.decodeStream( inputStream , null , options ) ; options.inSampleSize = 4 ; options.inPreferredConfig = Bitmap.Config.RGB_565 ; options.inJustDecodeBounds = false ; inputStream.reset(); bitmap = BitmapFactory.decodeStream( inputStream , null , options ) ; return bitmap ; } catch (MalformedURLException e) { e.printStackTrace(); }catch (IOException e) { e.printStackTrace(); }finally { if ( inputStream != null ){ try { inputStream.close(); } catch (IOException e) { e.printStackTrace(); } } if ( conn != null ){ conn.disconnect(); } } return null ; }