HttpClient4.1 使用示例

package com.yulore.httpproxy;        import java.io.File;    import java.io.FileInputStream;    import java.io.IOException;    import java.io.UnsupportedEncodingException;    import java.security.KeyManagementException;    import java.security.KeyStore;    import java.security.KeyStoreException;    import java.security.NoSuchAlgorithmException;    import java.security.UnrecoverableKeyException;    import java.security.cert.CertificateException;    import java.util.ArrayList;    import java.util.List;        import org.apache.http.HttpEntity;    import org.apache.http.HttpResponse;    import org.apache.http.NameValuePair;    import org.apache.http.ParseException;    import org.apache.http.client.ClientProtocolException;    import org.apache.http.client.HttpClient;    import org.apache.http.client.entity.UrlEncodedFormEntity;    import org.apache.http.client.methods.HttpGet;    import org.apache.http.client.methods.HttpPost;    import org.apache.http.conn.scheme.Scheme;    import org.apache.http.conn.ssl.SSLSocketFactory;    import org.apache.http.impl.client.DefaultHttpClient;    import org.apache.http.message.BasicNameValuePair;    import org.apache.http.util.EntityUtils;    import org.junit.Test;        public class HttpClientTest {            @Test        public void jUnitTest(){            get();        }                /**        * HttpClient连接SSL        */        private void ssl() {            DefaultHttpClient httpclient = new DefaultHttpClient();            try {                KeyStore trustStore = KeyStore.getInstance(KeyStore                        .getDefaultType());                FileInputStream instream = new FileInputStream(new File(                        "d:\\tomcat.keystore"));                try {                    // 加载keyStore d:\\tomcat.keystore                    trustStore.load(instream, "123456".toCharArray());                } catch (CertificateException e) {                    e.printStackTrace();                } finally {                    try {                        instream.close();                    } catch (Exception ignore) {                    }                }                // 穿件Socket工厂,将trustStore注入                SSLSocketFactory socketFactory = new SSLSocketFactory(trustStore);                // 创建Scheme                Scheme sch = new Scheme("https", 8443, socketFactory);                // 注册Scheme                httpclient.getConnectionManager().getSchemeRegistry().register(sch);                // 创建http请求(get方式)                HttpGet httpget = new HttpGet(                        "https://localhost:8443/myDemo/Ajax/serivceJ.action");                System.out.println("executing request" + httpget.getRequestLine());                HttpResponse response = httpclient.execute(httpget);                HttpEntity entity = response.getEntity();                System.out.println("----------------------------------------");                System.out.println(response.getStatusLine());                if (entity != null) {                    System.out.println("Response content length: "                            + entity.getContentLength());                    String ss = EntityUtils.toString(entity);                    System.out.println(ss);                    EntityUtils.consume(entity);                }            } catch (ParseException e) {                e.printStackTrace();            } catch (IOException e) {                e.printStackTrace();            } catch (KeyManagementException e) {                e.printStackTrace();            } catch (UnrecoverableKeyException e) {                e.printStackTrace();            } catch (NoSuchAlgorithmException e) {                e.printStackTrace();            } catch (KeyStoreException e) {                e.printStackTrace();            } finally {                httpclient.getConnectionManager().shutdown();            }        }            /**        * post方式提交表单（模拟用户登录请求）        */        private void postForm() {            // 创建默认的httpClient实例.            HttpClient httpclient = new DefaultHttpClient();            // 创建httppost            HttpPost httppost = new HttpPost(                    "http://localhost:8080/myDemo/Ajax/serivceJ.action");            // 创建参数队列            List<NameValuePair> formparams = new ArrayList<NameValuePair>();            formparams.add(new BasicNameValuePair("username", "admin"));            formparams.add(new BasicNameValuePair("password", "123456"));            UrlEncodedFormEntity uefEntity;            try {                uefEntity = new UrlEncodedFormEntity(formparams, "UTF-8");                httppost.setEntity(uefEntity);                System.out.println("executing request " + httppost.getURI());                HttpResponse response;                response = httpclient.execute(httppost);                HttpEntity entity = response.getEntity();                if (entity != null) {                    System.out.println("--------------------------------------");                    System.out.println("Response content: "                            + EntityUtils.toString(entity, "UTF-8"));                    System.out.println("--------------------------------------");                }            } catch (ClientProtocolException e) {                e.printStackTrace();            } catch (UnsupportedEncodingException e1) {                e1.printStackTrace();            } catch (IOException e) {                e.printStackTrace();            } finally {                // 关闭连接,释放资源                httpclient.getConnectionManager().shutdown();            }        }            /**        * 发送 post请求访问本地应用并根据传递参数不同返回不同结果        */        private void post() {            // 创建默认的httpClient实例.            HttpClient httpclient = new DefaultHttpClient();            // 创建httppost            HttpPost httppost = new HttpPost(                    "http://localhost:8080/myDemo/Ajax/serivceJ.action");            // 创建参数队列            List<NameValuePair> formparams = new ArrayList<NameValuePair>();            formparams.add(new BasicNameValuePair("type", "house"));            UrlEncodedFormEntity uefEntity;            try {                uefEntity = new UrlEncodedFormEntity(formparams, "UTF-8");                httppost.setEntity(uefEntity);                System.out.println("executing request " + httppost.getURI());                HttpResponse response;                response = httpclient.execute(httppost);                HttpEntity entity = response.getEntity();                if (entity != null) {                    System.out.println("--------------------------------------");                    System.out.println("Response content: "                            + EntityUtils.toString(entity, "UTF-8"));                    System.out.println("--------------------------------------");                }            } catch (ClientProtocolException e) {                e.printStackTrace();            } catch (UnsupportedEncodingException e1) {                e1.printStackTrace();            } catch (IOException e) {                e.printStackTrace();            } finally {                // 关闭连接,释放资源                httpclient.getConnectionManager().shutdown();            }        }            /**        * 发送 get请求        */        private void get() {                HttpClient httpclient = new DefaultHttpClient();                try {                // 创建httpget.                HttpGet httpget = new HttpGet("http://www.baidu.com/");                System.out.println("executing request " + httpget.getURI());                // 执行get请求.                HttpResponse response = httpclient.execute(httpget);                // 获取响应实体                HttpEntity entity = response.getEntity();                System.out.println("--------------------------------------");                // 打印响应状态                System.out.println(response.getStatusLine());                if (entity != null) {                    // 打印响应内容长度                    System.out.println("Response content length: "                            + entity.getContentLength());                    // 打印响应内容                    System.out.println("Response content: "                            + EntityUtils.toString(entity));                }                System.out.println("------------------------------------");            } catch (ClientProtocolException e) {                e.printStackTrace();            } catch (ParseException e) {                e.printStackTrace();            } catch (IOException e) {                e.printStackTrace();            } finally {                // 关闭连接,释放资源                httpclient.getConnectionManager().shutdown();            }        }        }