发送GET请求
package demo; import java.io.*; import java.net.HttpURLConnection; import java.net.URL; public class HttpDemo { public static void main(String[] args) throws IOException { String url = "https://www.baidu.com/"; // 得到connection对象 URL httpUrl = new URL(url); HttpURLConnection connection = (HttpURLConnection) httpUrl.openConnection(); //连接 connection.connect(); // 获取状态码 响应结果 if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) { InputStream inputStream = connection.getInputStream(); BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); String line = null; StringBuffer buffer = new StringBuffer(); while ((line = reader.readLine()) != null) { buffer.append(line); } reader.close(); System.out.println(buffer.toString()); } // 断开连接 connection.disconnect(); } }
发送POST请求
package demo;
import java.io.*;
import java.net.HttpURLConnection;
import java.net.URL;
public class HttpDemo {
public static void main(String[] args) throws IOException {
String url = "http://httpbin.org/post";;
//得到connection对象
URL httpUrl = new URL(url);
HttpURLConnection connection = (HttpURLConnection) httpUrl.openConnection();
//设置请求方式
connection.setRequestMethod("POST");
connection.setDoOutput(true);
// 设置请求头
connection.setRequestProperty("Accept", "/");
// 设置请求体
String body = "name=Tom&age=23";
OutputStream outputStream = connection.getOutputStream();
BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
writer.write(body);
writer.close();
//连接
connection.connect();
// 获取状态码 响应结果
if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
InputStream inputStream = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line = null;
StringBuffer buffer = new StringBuffer();
while ((line = reader.readLine()) != null) {
buffer.append(line);
}
reader.close();
System.out.println(buffer.toString());
}
// 断开连接
connection.disconnect();
}
}
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