如何使用Java在Http Get方法中设置Cookies

要在Java中使用Http Get方法设置Cookies，您可以使用java.net.HttpURLConnection或者org.apache.http.client.HttpClient。以下是两种方法的示例：

方法1：使用java.net.HttpURLConnection

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

public class HttpGetWithCookies {
    public static void main(String[] args) {
        try {
            String url = "https://example.com";
            URL obj = new URL(url);
            HttpURLConnection connection = (HttpURLConnection) obj.openConnection();

            // 设置Cookies
            connection.setRequestProperty("Cookie", "cookieName1=cookieValue1; cookieName2=cookieValue2");

            // 设置其他属性
            connection.setRequestMethod("GET");
            connection.setRequestProperty("User-Agent", "Mozilla/5.0");

            // 发送请求
            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();

            // 输出响应内容
            System.out.println(response.toString());

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

方法2：使用org.apache.http.client.HttpClient

首先，您需要添加Apache HttpClient的依赖。如果您使用Maven，可以在pom.xml文件中添加以下依赖：

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

然后，您可以使用以下代码进行Http Get请求并设置Cookies：

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.client.CookieStore;
import org.apache.http.impl.client.BasicCookieStore;
import org.apache.http.cookie.Cookie;
import org.apache.http.cookie.CookieBuilder;
import org.apache.http.HttpEntity;
import org.apache.http.util.EntityUtils;
import java.io.IOException;

public class HttpGetWithCookies {
    public static void main(String[] args) {
        try {
            String url = "https://example.com";
            CookieStore cookieStore = new BasicCookieStore();
            Cookie cookie1 = CookieBuilder.create("cookieName1", "cookieValue1").domain("example.com").build();
            Cookie cookie2 = CookieBuilder.create("cookieName2", "cookieValue2").domain("example.com").build();
            cookieStore.addCookie(cookie1);
            cookieStore.addCookie(cookie2);

            CloseableHttpClient httpClient = HttpClients.custom().setDefaultCookieStore(cookieStore).build();
            HttpGet httpGet = new HttpGet(url);
            httpGet.setHeader("User-Agent", "Mozilla/5.0");

            CloseableHttpResponse response = httpClient.execute(httpGet);
            HttpEntity entity = response.getEntity();
            String content = EntityUtils.toString(entity);

            System.out.println(content);

            response.close();
            httpClient.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

这些示例展示了如何在Java中使用Http Get方法设置Cookies。请注意，您需要根据实际情况替换url、cookieName1、cookieValue1和cookieName2、cookieValue2等变量。