Java Jsoup提交表单

import org.jsoup.Connection;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;

public class FormSubmitExample {
    public static void main(String[] args) throws Exception {
        // 连接到目标网页并获取整个HTML页面
        Connection.Response response = Jsoup.connect("http://example.com/login")
                .method(Connection.Method.GET)
                .execute();
        Document document = response.parse();

        // 选择表单元素并设置值
        Element usernameInput = document.selectFirst("input[name=username]");
        Element passwordInput = document.selectFirst("input[name=password]");
        usernameInput.val("username");
        passwordInput.val("password");

        // 提交表单
        Connection.Response loginResponse = Jsoup.connect("http://example.com/login")
                .data(usernameInput.attr("name"), usernameInput.val())
                .data(passwordInput.attr("name"), passwordInput.val())
                .method(Connection.Method.POST)
                .execute();

        // 处理登录后的响应
        Document loggedInDocument = loginResponse.parse();
        // 进行后续操作...
    }
}