http请求接口调用

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.URISyntaxException;
import java.net.URL;
import java.net.UnknownHostException;
import java.security.GeneralSecurityException;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Base64;
import java.util.Collection;
import java.util.Date;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Random;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.time.FastDateFormat;
import org.apache.http.HttpEntity;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.utils.URIBuilder;
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.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.json.JSONException;
import org.json.JSONObject;
import org.springframework.http.MediaType;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import com.alibaba.dubbo.common.json.ParseException;
import com.alibaba.fastjson.JSON;
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.PutObjectResult;
import com.ezhiyang.account.common.result.ReturnS;

import lombok.extern.slf4j.Slf4j;
import sun.misc.BASE64Encoder;

@Test
public void postParams() {
    // 获取连接客户端工具
    CloseableHttpClient httpClient = HttpClients.createDefault();

    String entityStr = null;
    CloseableHttpResponse response = null;

    try {

        // 创建POST请求对象
        HttpPost httpPost = new HttpPost("http://www.baidu.com");

        /*
         * 添加请求参数
         */
        // 创建请求参数
        List<NameValuePair> list = new LinkedList<>();
        BasicNameValuePair param1 = new BasicNameValuePair("name", "root");
        BasicNameValuePair param2 = new BasicNameValuePair("password", "123456");
        list.add(param1);
        list.add(param2);
        // 使用URL实体转换工具
        UrlEncodedFormEntity entityParam = new UrlEncodedFormEntity(list, "UTF-8");
        httpPost.setEntity(entityParam);

        /* 
         * 添加请求头信息
         */
        // 浏览器表示
        httpPost.addHeader("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6)");
        // 传输的类型
        httpPost.addHeader("Content-Type", "application/x-www-form-urlencoded");

        // 执行请求
        response = httpClient.execute(httpPost);
        // 获得响应的实体对象
        HttpEntity entity = response.getEntity();
        // 使用Apache提供的工具类进行转换成字符串
        entityStr = EntityUtils.toString(entity, "UTF-8");

        // System.out.println(Arrays.toString(response.getAllHeaders()));

    } catch (ClientProtocolException e) {
        System.err.println("Http协议出现问题");
        e.printStackTrace();
    } catch (ParseException e) {
        System.err.println("解析错误");
        e.printStackTrace();
    } catch (IOException e) {
        System.err.println("IO异常");
        e.printStackTrace();
    } finally {
        // 释放连接
        if (null != response) {
            try {
                response.close();
                httpClient.close();
            } catch (IOException e) {
                System.err.println("释放连接出错");
                e.printStackTrace();
            }
        }
    }

    // 打印响应内容
    System.out.println(entityStr);
    return entityStr;
}



@Test
public void getParams() {

    // 获取连接客户端工具
    CloseableHttpClient httpClient = HttpClients.createDefault();

    String entityStr = null;
    CloseableHttpResponse response = null;

    try {
        /*
         * 由于GET请求的参数都是拼装在URL地址后方，所以我们要构建一个URL，带参数
         */
        URIBuilder uriBuilder = new URIBuilder("http://www.baidu.com");
        /** 第一种添加参数的形式 */
        /*uriBuilder.addParameter("name", "root");
        uriBuilder.addParameter("password", "123456");*/
        /** 第二种添加参数的形式 */
        List<NameValuePair> list = new LinkedList<>();
        BasicNameValuePair param1 = new BasicNameValuePair("name", "root");
        BasicNameValuePair param2 = new BasicNameValuePair("password", "123456");
        list.add(param1);
        list.add(param2);
        uriBuilder.setParameters(list);

        // 根据带参数的URI对象构建GET请求对象
        HttpGet httpGet = new HttpGet(uriBuilder.build());

        /* 
         * 添加请求头信息
         */
        // 浏览器表示
        httpGet.addHeader("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.6)");
        // 传输的类型
        httpGet.addHeader("Content-Type", "application/x-www-form-urlencoded");

        // 执行请求
        response = httpClient.execute(httpGet);
        // 获得响应的实体对象
        HttpEntity entity = response.getEntity();
        // 使用Apache提供的工具类进行转换成字符串
        entityStr = EntityUtils.toString(entity, "UTF-8");
    } catch (ClientProtocolException e) {
        System.err.println("Http协议出现问题");
        e.printStackTrace();
    } catch (ParseException e) {
        System.err.println("解析错误");
        e.printStackTrace();
    } catch (URISyntaxException e) {
        System.err.println("URI解析异常");
        e.printStackTrace();
    } catch (IOException e) {
        System.err.println("IO异常");
        e.printStackTrace();
    } finally {
        // 释放连接
        if (null != response) {
            try {
                response.close();
                httpClient.close();
            } catch (IOException e) {
                System.err.println("释放连接出错");
                e.printStackTrace();
            }
        }
    }

    // 打印响应内容
    System.out.println(entityStr);
    return entityStr;
}