使用 HTTP 服务:
1.
Apache HttpClinet
Http GET
Http POST
a.创建 HttpClient
b.初始 HTTP GET 方法或 POST 方法.
c.设置参数 键值对
d.执行 HTTP 调用
e.处理 HTTP 回复
HTTP GET 示例:
- public class TestHttpGetMethod{
- public void get(){
- BufferedReader in = null;
- try{
- HttpClient client = new DefaultHttpClient();
- HttpGet request = new HttpGet();
- request.setURI("http://w26.iteye.com");
- HttpResponse response = client.execute(request);
- in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
- StringBuffer sb = new StringBuffer("");
- String line = "";
- String NL = System.getProperty("line.separator");
- while((line = in.readLine()) != null){
- sb.append(line + NL);
- }
- in.close();
- String page = sb.toString();
- Log.i(TAG, page);
- }catch(Exception e){
- Log.e(TAG,e.toString())
- }finally{
- if(in != null){
- try{
- in.close();
- }catch(IOException ioe){
- Log.e(TAG, ioe.toString());
- }
- }
- }
- }
- }
- public class TestHttpGetMethod{
- public void get(){
- BufferedReader in = null;
- try{
- HttpClient client = new DefaultHttpClient();
- HttpGet request = new HttpGet();
- request.setURI("http://w26.iteye.com");
- HttpResponse response = client.execute(request);
- in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
- StringBuffer sb = new StringBuffer("");
- String line = "";
- String NL = System.getProperty("line.separator");
- while((line = in.readLine()) != null){
- sb.append(line + NL);
- }
- in.close();
- String page = sb.toString();
- Log.i(TAG, page);
- }catch(Exception e){
- Log.e(TAG,e.toString())
- }finally{
- if(in != null){
- try{
- in.close();
- }catch(IOException ioe){
- Log.e(TAG, ioe.toString());
- }
- }
- }
- }
- }
带参数的 HTTP GET:
- HttpGet request = new HttpGet("http://www.baidu.com/s?wd=amos_tl");
- client.execute(request);
- HttpGet request = new HttpGet("http://www.baidu.com/s?wd=amos_tl");
- client.execute(request);
HTTP POST 示例:
- public class TestHttpPostMethod{
- public void post(){
- BufferedReader in = null;
- try{
- HttpClient client = new DefaultHttpClient();
- HttpPost request = new HttpPost("http://localhost/upload.jsp");
- List<NameValuePair> postParams = new ArrayList<NameValuePair>();
- postParams.add(new BasicNameValuePair("filename", "sex.mov"));
- UrlEncodeFormEntity formEntity = new UrlEncodeFormEntity(postParams);
- request.setEntity(formEntity);
- HttpResponse response = client.execute(request);
- in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
- StringBuffer sb = new StringBuffer("");
- String line = "";
- String NL = System.getProperty("line.separator");
- while((line = in.readLine()) != null){
- sb.append(line + NL);
- }
- in.close();
- String result = sb.toString();
- Log.i(TAG, result );
- }catch(Exception e){
- Log.e(TAG,e.toString())
- }finally{
- if(in != null){
- try{
- in.close();
- }catch(IOException ioe){
- Log.e(TAG, ioe.toString());
- }
- }
- }
- }
- }
- public class TestHttpPostMethod{
- public void post(){
- BufferedReader in = null;
- try{
- HttpClient client = new DefaultHttpClient();
- HttpPost request = new HttpPost("http://localhost/upload.jsp");
- List<NameValuePair> postParams = new ArrayList<NameValuePair>();
- postParams.add(new BasicNameValuePair("filename", "sex.mov"));
- UrlEncodeFormEntity formEntity = new UrlEncodeFormEntity(postParams);
- request.setEntity(formEntity);
- HttpResponse response = client.execute(request);
- in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
- StringBuffer sb = new StringBuffer("");
- String line = "";
- String NL = System.getProperty("line.separator");
- while((line = in.readLine()) != null){
- sb.append(line + NL);
- }
- in.close();
- String result = sb.toString();
- Log.i(TAG, result );
- }catch(Exception e){
- Log.e(TAG,e.toString())
- }finally{
- if(in != null){
- try{
- in.close();
- }catch(IOException ioe){
- Log.e(TAG, ioe.toString());
- }
- }
- }
- }
- }
multipart POST 支持:
需要以下支持:
Commons IO
http://commons.apache.org/io/
Mime4j
http://james.apache.org/mime4j/
HttpMime
http://hc.apache.org/httpcomponents-client/httpmime/index.html
下载全部JAR网址:
http://www.sayedhashimi.com/downloads/android/multipart-android.zip
multipart POST 示例:
- public class TestHttpMultipartPost{
- public void mulPost(){
- try{
- InputStram in = this.getAssets().open("data.xml");
- HttpClient client = new HttpDefaultHttpClient();
- HttpPost request = new HttpPost("http://localhost/upload.jsp");
- byte[] data = IOUtils.toByteArray(in);
- InputStreamBody isb = new InputStreamBody(new ByteArrayIntputStream(data), "uploadedFile");
- StringBody sb1 = new StringBody("some text");
- StringBoyd sb2 = new StringBody("some text too");
- MultipartEntity me = new MultipartEntity();
- me.addPart("uploadedFile", isb);
- me.addPart("one" ,sb1);
- me.addPart("two" ,sb2);
- request.setEntity(me);
- HttpRespones response = client.excute(request);
- res.getEntity().getContent().close();
- } catch(Throwable e){
- Log.e(TAG, e.toString());
- }
- }
- }
- public class TestHttpMultipartPost{
- public void mulPost(){
- try{
- InputStram in = this.getAssets().open("data.xml");
- HttpClient client = new HttpDefaultHttpClient();
- HttpPost request = new HttpPost("http://localhost/upload.jsp");
- byte[] data = IOUtils.toByteArray(in);
- InputStreamBody isb = new InputStreamBody(new ByteArrayIntputStream(data), "uploadedFile");
- StringBody sb1 = new StringBody("some text");
- StringBoyd sb2 = new StringBody("some text too");
- MultipartEntity me = new MultipartEntity();
- me.addPart("uploadedFile", isb);
- me.addPart("one" ,sb1);
- me.addPart("two" ,sb2);
- request.setEntity(me);
- HttpRespones response = client.excute(request);
- res.getEntity().getContent().close();
- } catch(Throwable e){
- Log.e(TAG, e.toString());
- }
- }
- }
异常处理
重试处理
多线程问题
使用 ClientConnectionManager ,创建一个线程安全的 HttpClient.
- public class ApplicationEx extends Application{
- public static final String TAG = "amos_tl";
- private HttpClient client = null;
- @override
- public void onCreate(){
- super.onCreate();
- client = createHttpClient();
- }
- @override
- public void onLowMemory(){
- super.onLowMemory();
- shutdownHttpClient();
- }
- @override
- public void onTerminate(){
- super.onTerminate();
- shutdownHttpClient();
- }
- private void shutdownHttpClient(){
- if(client != null && client.getConnectionManager() != null){
- client.getConnectionManager().shutdown();
- client = null;
- }
- }
- private HttpClient createHttpClient(){
- Log.d(TAG, "create httpclient ...");
- HttpParams params = new BasicHttpParams();
- HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
- HttpProtocolParams.setContentCharset(params, HTTP.DEFAULT_CONTENT_CHARSET);
- HttpProtocolParams.setUseExpectContinue(params, true);
- SchemaRegistry sr = new SchemaRegistry();
- sr.register(new Schema("http", PlainSocketFactory.getSocketFactory(), 80));
- sr.register(new Schema("https", SLLSocketFactory.getSocketFactory(), 443));
- ClientConnectionManager cm = new ThreadSafeClientConnManager(params, sr);
- return new DefaultHttpClient(cm, params);
- }
- public HttpClient getHttpClient(){
- return client;
- }
- }
- public class ApplicationEx extends Application{
- public static final String TAG = "amos_tl";
- private HttpClient client = null;
- @override
- public void onCreate(){
- super.onCreate();
- client = createHttpClient();
- }
- @override
- public void onLowMemory(){
- super.onLowMemory();
- shutdownHttpClient();
- }
- @override
- public void onTerminate(){
- super.onTerminate();
- shutdownHttpClient();
- }
- private void shutdownHttpClient(){
- if(client != null && client.getConnectionManager() != null){
- client.getConnectionManager().shutdown();
- client = null;
- }
- }
- private HttpClient createHttpClient(){
- Log.d(TAG, "create httpclient ...");
- HttpParams params = new BasicHttpParams();
- HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
- HttpProtocolParams.setContentCharset(params, HTTP.DEFAULT_CONTENT_CHARSET);
- HttpProtocolParams.setUseExpectContinue(params, true);
- SchemaRegistry sr = new SchemaRegistry();
- sr.register(new Schema("http", PlainSocketFactory.getSocketFactory(), 80));
- sr.register(new Schema("https", SLLSocketFactory.getSocketFactory(), 443));
- ClientConnectionManager cm = new ThreadSafeClientConnManager(params, sr);
- return new DefaultHttpClient(cm, params);
- }
- public HttpClient getHttpClient(){
- return client;
- }
- }
HttpActivity.java
- public class HttpActivity extends Activity{
- @override
- public void onCreate(Bundle savedInstanceState){
- super.onCreate(savedInstanceState);
- Log.d(TAG, "httpactivity startup...");
- getHttpContent();
- }
- private void getHttpContent(){
- try{
- ApplicationEx app = (ApplicationEx)this.getApplication();
- HttpClient client = app.getHttpClient();
- HttpGet request = new HttpGet();
- request.setURI("http://w26.iteye.com");
- HttpResponse response = client.excute(resquest);
- String page = EntityUtils.toString(response.getEntity());
- Log.i(TAG, page);
- }catch(Exception e){
- Log.e(TAG, e.toString());
- }
- }
- }