网络请求框架----HttpClient的get,post和图片上传服务器

HttpClient是Apache Jakarta Common下的子项目，用来提供高效的、最新的、功能丰富的支持HTTP协议的客户端编程工具包，并且它支持HTTP协议最新的版本和建议。HttpClient已经应用在很多的项目中，比如Apache Jakarta上很著名的另外两个开源项目Cactus和HTMLUnit都使用了HttpClient。

HttpClient:是一个接口.

特性：

1. 基于标准、纯净的java语言。实现了Http1.0和Http1.1

2. 以可扩展的面向对象的结构实现了Http全部的方法（GET, POST, PUT, DELETE, HEAD, OPTIONS, and TRACE）。

3. 支持HTTPS协议。

4. 通过Http代理建立透明的连接。

5. 利用CONNECT方法通过Http代理建立隧道的https连接。

6. Basic, Digest, NTLMv1, NTLMv2, NTLM2 Session, SNPNEGO/Kerberos认证方案。

7. 插件式的自定义认证方案。

8. 便携可靠的套接字工厂使它更容易的使用第三方解决方案。

9. 连接管理器支持多线程应用。支持设置最大连接数，同时支持设置每个主机的最大连接数，发现并关闭过期的连接。

10. 自动处理Set-Cookie中的Cookie。

11. 插件式的自定义Cookie策略。

12. Request的输出流可以避免流中内容直接缓冲到socket服务器。

13. Response的输入流可以有效的从socket服务器直接读取相应内容。

14. 在http1.0和http1.1中利用KeepAlive保持持久连接。

15. 直接获取服务器发送的response code和 headers。

16. 设置连接超时的能力。

17. 实验性的支持http1.1 response caching。

18. 源代码基于Apache License 可免费获取。 

案例效果图：

             

MainActivity.java

public class MainActivity extends Activity implements OnClickListener {public static String urls = "http://gpj.zhangwoo.cn/app.php?platform=android&appkey=5a379b5eed8aaae531df5f60b12100cfb6dff2c1";private TextView mTextView;private ImageView imagegvoew;String resultStr = "";String resultStr1 = "";private Bitmap mBitmap = null;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {findViewById(R.id.btn1).setOnClickListener(this);findViewById(R.id.btn2).setOnClickListener(this);findViewById(R.id.btn3).setOnClickListener(this);findViewById(R.id.btn4).setOnClickListener(this);mTextView = (TextView) findViewById(R.id.Text);imagegvoew = (ImageView) findViewById(R.id.imagegvoew);}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.btn1:Thread visitBaiduThread = new Thread(new VisitWebRunnable());visitBaiduThread.start();try {visitBaiduThread.join();if (!resultStr.equals("")) {mTextView.setText(resultStr);}} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}break;case R.id.btn2:Thread visitBaiduThreads = new Thread(new VisitWebRunnables());visitBaiduThreads.start();try {visitBaiduThreads.join();if (!resultStr1.equals("")) {mTextView.setText(resultStr1);}} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}break;case R.id.btn3:new DownImgAsyncTask().execute("http://avatar.csdn.net/8/6/0/2_dickyqie.jpg");break;case R.id.btn4://Util.addFile("url");//图片路径break;default:break;}}/** 这里重写handleMessage方法，接受到子线程数据后更新UI **/private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {switch (msg.what) {case 1:// 关闭imagegvoew.setImageBitmap(mBitmap);break;}}};class DownImgAsyncTask extends AsyncTask<String, Void, Bitmap> {@Overrideprotected void onPreExecute() {// TODO Auto-generated method stubsuper.onPreExecute();}@Overrideprotected Bitmap doInBackground(String... params) {// TODO Auto-generated method stubBitmap b = Util.getImageBitmap(params[0]);return b;}@Overrideprotected void onPostExecute(Bitmap result) {// TODO Auto-generated method stubsuper.onPostExecute(result);if (result != null) {imagegvoew.setImageBitmap(result);}}}/*** * get *  * @author zq *  */class VisitWebRunnable implements Runnable {@Overridepublic void run() {// TODO Auto-generated method stubHttpClient httpCLient = new DefaultHttpClient();// 创建get请求实例HttpGet httpget = new HttpGet("http://www.baidu.com");try {HttpResponse response = httpCLient.execute(httpget);if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {String result = EntityUtils.toString(response.getEntity(),"UTF-8");resultStr = result;}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}/*** * Post *  * @author zq *  */class VisitWebRunnables implements Runnable {@Overridepublic void run() {// TODO Auto-generated method stubList<NameValuePair> formparams = new ArrayList<NameValuePair>();formparams.add(new BasicNameValuePair("c", "member"));formparams.add(new BasicNameValuePair("a", "getdepartments"));HttpClient client = null;HttpPost request = null;try {client = new DefaultHttpClient();request = new HttpPost(urls);request.setEntity(new UrlEncodedFormEntity(formparams,HTTP.UTF_8));HttpResponse response = client.execute(request);if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {String result = EntityUtils.toString(response.getEntity(),"UTF-8");System.out.println(result);resultStr1 = result;}} catch (IOException e) {e.printStackTrace();}}}}

public class Util {/** * 图片加载 *  * @param url * @return */public static Bitmap getImageBitmap(String url) {DefaultHttpClient httpclient = new DefaultHttpClient();HttpGet httpget = new HttpGet(url);try {HttpResponse resp = httpclient.execute(httpget);// 判断是否正确执行if (HttpStatus.SC_OK == resp.getStatusLine().getStatusCode()) {// 将返回内容转换为bitmapHttpEntity entity = resp.getEntity();InputStream in = entity.getContent();Bitmap mBitmap = BitmapFactory.decodeStream(in);// 向handler发送消息，执行显示图片操作return mBitmap;}} catch (Exception e) {} finally {httpclient.getConnectionManager().shutdown();}return null;}/*** * 上传文件 */public static void addFile(String url) {CloseableHttpClient httpclient = HttpClients.createDefault();try {HttpPost httppost = new HttpPost(url);FileBody bin = new FileBody(new File(url));StringBody comment = new StringBody("A binary file of some kind",ContentType.TEXT_PLAIN);HttpEntity reqEntity = MultipartEntityBuilder.create().addPart("bin", bin).addPart("comment", comment).build();httppost.setEntity(reqEntity);System.out.println("executing request " + httppost.getRequestLine());CloseableHttpResponse response = httpclient.execute(httppost);try {System.out.println(response.getStatusLine());HttpEntity resEntity = response.getEntity();if (resEntity != null) {System.out.println("Response content length: "+ resEntity.getContentLength());}} finally {response.close();}} catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();} finally {try {httpclient.close();} catch (IOException e) {e.printStackTrace();}}}}

记得加网络权限

<uses-permission android:name="android.permission.INTERNET"/>

完成以上功能需要 httpclient.jar  , httpcore.jar  htttpmime.jar   点击下载即可

源码下载：  http://download.csdn.net/detail/dickyqie/9707202