HttpClient4使用

需要导入的jar包

HttpClient4使用

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001	packagemain;

002

003	importjava.io.IOException;

004	importjava.io.UnsupportedEncodingException;

005	importjava.net.URI;

006	importjava.net.URISyntaxException;

007	importjava.util.ArrayList;

008	importjava.util.List;

009

010	importorg.apache.http.HttpEntity;

011	importorg.apache.http.HttpResponse;

012	importorg.apache.http.NameValuePair;

013	importorg.apache.http.ParseException;

014	importorg.apache.http.client.ClientProtocolException;

015	importorg.apache.http.client.HttpClient;

016	importorg.apache.http.client.entity.UrlEncodedFormEntity;

017	importorg.apache.http.client.methods.HttpGet;

018	importorg.apache.http.client.methods.HttpPost;

019	importorg.apache.http.impl.client.DefaultHttpClient;

020	importorg.apache.http.message.BasicNameValuePair;

021	importorg.apache.http.util.EntityUtils;

022

023	publicclassMain {

024

025	privatestaticHttpClient hc =newDefaultHttpClient();

026

027

/**

028	* @param args

029

*/

030	publicstaticvoidmain(String[] args) {

031	List<NameValuePair> params =newArrayList<NameValuePair>();

032	params.add(newBasicNameValuePair("email","xxx@gmail.com"));

033	params.add(newBasicNameValuePair("pwd","xxx"));

034	params.add(newBasicNameValuePair("save_login","1"));

035

036	String url ="http://www.oschina.net/action/user/login";

037

038	String body = post(url, params);

039	System.out.println(body);

040

}

041

042

/**

043

* Get请求

044	* @param url

045	* @param params

046

* @return

047

*/

048	publicstaticString get(String url, List<NameValuePair> params) {

049	String body =null;

050

try{

051

// Get请求

052	HttpGet httpget =newHttpGet(url);

053

// 设置参数

054	String str = EntityUtils.toString(newUrlEncodedFormEntity(params));

055	httpget.setURI(newURI(httpget.getURI().toString() +"?"+ str));

056

// 发送请求

057	HttpResponse httpresponse = hc.execute(httpget);

058

// 获取返回数据

059	HttpEntity entity = httpresponse.getEntity();

060	body = EntityUtils.toString(entity);

061	if(entity !=null) {

062	entity.consumeContent();

063

}

064	}catch(ParseException e) {

065	e.printStackTrace();

066	}catch(UnsupportedEncodingException e) {

067	e.printStackTrace();

068	}catch(IOException e) {

069	e.printStackTrace();

070	}catch(URISyntaxException e) {

071	e.printStackTrace();

072

}

073	returnbody;

074

}

075

076

/**

077	* // Post请求

078	* @param url

079	* @param params

080

* @return

081

*/

082	publicstaticString post(String url, List<NameValuePair> params) {

083	String body =null;

084

try{

085

// Post请求

086	HttpPost httppost =newHttpPost(url);

087

// 设置参数

088	httppost.setEntity(newUrlEncodedFormEntity(params));

089

// 发送请求

090	HttpResponse httpresponse = hc.execute(httppost);

091

// 获取返回数据

092	HttpEntity entity = httpresponse.getEntity();

093	body = EntityUtils.toString(entity);

094	if(entity !=null) {

095	entity.consumeContent();

096

}

097	}catch(UnsupportedEncodingException e) {

098	e.printStackTrace();

099	}catch(ClientProtocolException e) {

100	e.printStackTrace();

101	}catch(ParseException e) {

102	e.printStackTrace();

103	}catch(IOException e) {

104	e.printStackTrace();

105

}

106	returnbody;

107

}

108

109

}