1. 浏览器请求
2. 代码请求
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.HttpURLConnection;
import java.URL;
public class CookieUtil {
/**
*
* @param vrifyCodeUrl 验证码url
* @return cookie
*/
public static String getCookie(String vrifyCodeUrl) {
String cookie = "";
ByteArrayOutputStream data = new ByteArrayOutputStream();
try {
// 创建URL
URL url = new URL(vrifyCodeUrl);
byte[] by = new byte[1024];
// 创建链接
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setConnectTimeout(5000);
InputStream is = conn.getInputStream();
// 获取cookie 格式: JSESSIONID=A5B2A80BA310A146DCBC606E084E29D1
cookie = "JSESSIONID="+conn.getHeaderField("set-cookie").split(";")[0].split("=")[1];
System.out.println("Cookie:"+cookie);
// 将内容读取内存中
int len = -1;
while ((len = is.read(by)) != -1) {
data.write(by, 0, len);
}
// 关闭流
is.close();
} catch (IOException e) {
e.printStackTrace();
}
return cookie;
}
public static void main(String[] args) {
getCookie("http://xxxxx");
}
}
输出:
Cookie:JSESSIONID=4964544B3CC5968EC3D387BAE31FA461
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