如何在java中发送curl请求_如何在post curl中发送请求正文_Groovy:不使用wsdl (如curl)从信封创建和发送SOAP请求。 - 腾讯云开发者社区

如何在java中发送curl请求

在Java中发送curl请求可以通过多种方式实现，以下是使用HttpURLConnection和Apache HttpClient两种常见的方法。

使用`HttpURLConnection`

HttpURLConnection是Java标准库中的一个类，可以用来发送HTTP请求。

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class CurlExample {
    public static void main(String[] args) {
        try {
            URL url = new URL("https://api.example.com/data");
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            // 设置请求方法
            connection.setRequestMethod("GET");
            // 获取响应码
            int responseCode = connection.getResponseCode();
            System.out.println("Response Code: " + responseCode);
            // 读取响应内容
            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String inputLine;
            StringBuffer response = new StringBuffer();
            while ((inputLine = in.readLine()) != null) {
                response.append(inputLine);
            }
            in.close();
            System.out.println(response.toString());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

使用`Apache HttpClient`

Apache HttpClient是一个功能强大的HTTP客户端库，可以更灵活地发送HTTP请求。

首先，需要在项目中添加Apache HttpClient依赖。如果使用Maven，可以在pom.xml中添加以下依赖：

<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.13</version>
</dependency>

然后，可以使用以下代码发送HTTP请求：

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;

public class HttpClientExample {
    public static void main(String[] args) {
        try (CloseableHttpClient httpClient = HttpClients.createDefault()) {
            HttpGet request = new HttpGet("https://api.example.com/data");
            try (CloseableHttpResponse response = httpClient.execute(request)) {
                HttpEntity entity = response.getEntity();
                if (entity != null) {
                    String result = EntityUtils.toString(entity);
                    System.out.println(result);
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}