public class TestHttpGetMethod{
public void get(){
BufferedReader in = null;
try{
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet();
request.setURI("");
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("");
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("");
List postParams = new ArrayList();
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
Mime4j
HttpMime
下载全部JAR网址:
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("");
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;
}
}
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("");
HttpResponse response = client.excute(resquest);
String page = EntityUtils.toString(response.getEntity());
Log.i(TAG, page);
}catch(Exception e){
Log.e(TAG, e.toString());
}
}
}
配置 AndroidManifest.xml
android:label="@string/app_name"
android:name="ApplictionEx"
>
