Java调用HTTP接口

说明

Java调用Http接口可以使用Java的HttpURLConnection或HttpClient等工具

HttpURLConnection

import java.net.HttpURLConnection;import java.net.URL;import java.io.BufferedReader;import java.io.InputStreamReader;public class HttpExample {    public static void main(String[] args) throws Exception {        // 创建URL对象        URL url = new URL("http://example.com/api");        // 创建HttpURLConnection对象        HttpURLConnection conn = (HttpURLConnection) url.openConnection();        // 设置请求方法为GET        conn.setRequestMethod("GET");        // 发送请求        int responseCode = conn.getResponseCode();        // 读取响应内容        BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));        String inputLine;        StringBuffer response = new StringBuffer();        while ((inputLine = in.readLine()) != null) {            response.append(inputLine);        }        in.close();        // 打印响应内容        System.out.println(response.toString());    }}

HttpClient

import org.apache.http.HttpResponse;import org.apache.http.client.HttpClient;import org.apache.http.client.methods.HttpGet;import org.apache.http.impl.client.HttpClientBuilder;import java.io.BufferedReader;import java.io.InputStreamReader;public class HttpExample {    public static void main(String[] args) throws Exception {        // 创建HttpClient对象        HttpClient client = HttpClientBuilder.create().build();        // 创建HttpGet对象        HttpGet request = new HttpGet("http://example.com/api");        // 发送请求        HttpResponse response = client.execute(request);        // 读取响应内容        BufferedReader in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));        String inputLine;        StringBuffer responseBuffer = new StringBuffer();        while ((inputLine = in.readLine()) != null) {            responseBuffer.append(inputLine);        }        in.close();        // 打印响应内容        System.out.println(responseBuffer.toString());    }}

来源地址：https://blog.csdn.net/pk5201314pk/article/details/131832126