一、HttpClient类

import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;public class HttpClient {    public static String doGet(String httpurl) {        HttpURLConnection connection = null;        InputStream is = null;        BufferedReader br = null;        String result = null;// 返回结果字符串        try {            // 创建远程url连接对象            URL url = new URL(httpurl);            // 通过远程url连接对象打开一个连接，强转成httpURLConnection类            connection = (HttpURLConnection) url.openConnection();            // 设置连接方式：get            connection.setRequestMethod("GET");            // 设置连接主机服务器的超时时间：15000毫秒            connection.setConnectTimeout(15000);            // 设置读取远程返回的数据时间：60000毫秒            connection.setReadTimeout(60000);            // 发送请求            connection.connect();            // 通过connection连接，获取输入流            if (connection.getResponseCode() == 200) {                is = connection.getInputStream();                // 封装输入流is，并指定字符集                br = new BufferedReader(new InputStreamReader(is, "UTF-8"));                // 存放数据                StringBuffer sbf = new StringBuffer();                String temp = null;                while ((temp = br.readLine()) != null) {                    sbf.append(temp);                    sbf.append("\r\n");                }                result = sbf.toString();            }        } catch (MalformedURLException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            // 关闭资源            if (null != br) {                try {                    br.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (null != is) {                try {                    is.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            connection.disconnect();// 关闭远程连接        }        return result;    }    public static String doPost(String httpUrl, String param) {        HttpURLConnection connection = null;        InputStream is = null;        OutputStream os = null;        BufferedReader br = null;        String result = null;        try {            URL url = new URL(httpUrl);            // 通过远程url连接对象打开连接            connection = (HttpURLConnection) url.openConnection();            // 设置连接请求方式            connection.setRequestMethod("POST");            // 设置连接主机服务器超时时间：15000毫秒            connection.setConnectTimeout(15000);            // 设置读取主机服务器返回数据超时时间：60000毫秒            connection.setReadTimeout(60000);            // 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true            connection.setDoOutput(true);            // 默认值为：true，当前向远程服务读取数据时，设置为true，该参数可有可无            connection.setDoInput(true);            // 设置传入参数的格式:请求参数应该是 name1=value1&name2=value2 的形式。            connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");            // 设置鉴权信息：Authorization: Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0            connection.setRequestProperty("Authorization", "Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0");            // 通过连接对象获取一个输出流            os = connection.getOutputStream();            // 通过输出流对象将参数写出去/传输出去,它是通过字节数组写出的            os.write(param.getBytes());            // 通过连接对象获取一个输入流，向远程读取            if (connection.getResponseCode() == 200) {                is = connection.getInputStream();                // 对输入流对象进行包装:charset根据工作项目组的要求来设置                br = new BufferedReader(new InputStreamReader(is, "UTF-8"));                StringBuffer sbf = new StringBuffer();                String temp = null;                // 循环遍历一行一行读取数据                while ((temp = br.readLine()) != null) {                    sbf.append(temp);                    sbf.append("\r\n");                }                result = sbf.toString();            }        } catch (MalformedURLException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } finally {            // 关闭资源            if (null != br) {                try {                    br.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (null != os) {                try {                    os.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (null != is) {                try {                    is.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            // 断开与远程地址url的连接            connection.disconnect();        }        return result;    }}

二、main方法

import java.util.Date;public class Main {    public static void main(String[] args) {        str = HttpClient.doPost("https://www.baidu.com?tstmp="+Math.random(),"p=1");        System.out.println(str);    }}