java实现httpclient 访问

package com.test;

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.cert.CertificateException;
import java.util.ArrayList;
import java.util.List;

import javax.net.ssl.SSLContext;

import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.ParseException;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContexts;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
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
         */
        public void ssl() {
                CloseableHttpClient httpclient = null;
                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) {
                                }
                        }
                        // 相信自己的CA和所有自签名的证书
                        SSLContext sslcontext = SSLContexts.custom().loadTrustMaterial(trustStore, new TrustSelfSignedStrategy()).build();
                        // 只允许使用TLSv1协议
                        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext, new String[] { "TLSv1" }, null,
                                        SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
                        httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
                        // 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());
                        CloseableHttpResponse response = httpclient.execute(httpget);
                        try {
                                HttpEntity entity = response.getEntity();
                                System.out.println("----------------------------------------");
                                System.out.println(response.getStatusLine());
                                if (entity != null) {
                                        System.out.println("Response content length: " + entity.getContentLength());
                                        System.out.println(EntityUtils.toString(entity));
                                        EntityUtils.consume(entity);
                                }
                        } finally {
                                response.close();
                        }
                } catch (ParseException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                } catch (KeyManagementException e) {
                        e.printStackTrace();
                } catch (NoSuchAlgorithmException e) {
                        e.printStackTrace();
                } catch (KeyStoreException e) {
                        e.printStackTrace();
                } finally {
                        if (httpclient != null) {
                                try {
                                        httpclient.close();
                                } catch (IOException e) {
                                        e.printStackTrace();
                                }
                        }
                }
        }

        /**
         * post方式提交表单(模拟用户登录请求)
         */
        public void postForm() {
                // 创建默认的httpClient实例.  
                CloseableHttpClient httpclient = HttpClients.createDefault();
                // 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());
                        CloseableHttpResponse response = httpclient.execute(httppost);
                        try {
                                HttpEntity entity = response.getEntity();
                                if (entity != null) {
                                        System.out.println("--------------------------------------");
                                        System.out.println("Response content: " + EntityUtils.toString(entity, "UTF-8"));
                                        System.out.println("--------------------------------------");
                                }
                        } finally {
                                response.close();
                        }
                } catch (ClientProtocolException e) {
                        e.printStackTrace();
                } catch (UnsupportedEncodingException e1) {
                        e1.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                } finally {
                        // 关闭连接,释放资源  
                        try {
                                httpclient.close();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
        }

        /**
         * 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
         */
        public void post() {
                // 创建默认的httpClient实例.  
                CloseableHttpClient httpclient = HttpClients.createDefault();
                // 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());
                        CloseableHttpResponse response = httpclient.execute(httppost);
                        try {
                                HttpEntity entity = response.getEntity();
                                if (entity != null) {
                                        System.out.println("--------------------------------------");
                                        System.out.println("Response content: " + EntityUtils.toString(entity, "UTF-8"));
                                        System.out.println("--------------------------------------");
                                }
                        } finally {
                                response.close();
                        }
                } catch (ClientProtocolException e) {
                        e.printStackTrace();
                } catch (UnsupportedEncodingException e1) {
                        e1.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                } finally {
                        // 关闭连接,释放资源  
                        try {
                                httpclient.close();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
        }

        /**
         * 发送 get请求
         */
        public void get() {
                CloseableHttpClient httpclient = HttpClients.createDefault();
                try {
                        // 创建httpget.  
                        HttpGet httpget = new HttpGet("http://www.baidu.com/");
                        System.out.println("executing request " + httpget.getURI());
                        // 执行get请求.  
                        CloseableHttpResponse response = httpclient.execute(httpget);
                        try {
                                // 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("------------------------------------");
                        } finally {
                                response.close();
                        }
                } catch (ClientProtocolException e) {
                        e.printStackTrace();
                } catch (ParseException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                } finally {
                        // 关闭连接,释放资源  
                        try {
                                httpclient.close();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
        }

        /**
         * 上传文件
         */
        public void upload() {
                CloseableHttpClient httpclient = HttpClients.createDefault();
                try {
                        HttpPost httppost = new HttpPost("http://localhost:8080/myDemo/Ajax/serivceFile.action");

                        FileBody bin = new FileBody(new File("F:\\image\\sendpix0.jpg"));
                        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("----------------------------------------");
                                System.out.println(response.getStatusLine());
                                HttpEntity resEntity = response.getEntity();
                                if (resEntity != null) {
                                        System.out.println("Response content length: " + resEntity.getContentLength());
                                }
                                EntityUtils.consume(resEntity);
                        } finally {
                                response.close();
                        }
                } catch (ClientProtocolException e) {
                        e.printStackTrace();
                } catch (IOException e) {
                        e.printStackTrace();
                } finally {
                        try {
                                httpclient.close();
                        } catch (IOException e) {
                                e.printStackTrace();
                        }
                }
        }
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