使用java htmlunit搜索具有动态ID的元素

import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlPage;

WebClient webClient = new WebClient();

webClient.getOptions().setJavaScriptEnabled(true);

HtmlPage page = webClient.getPage("http://example.com");

import com.gargoylesoftware.htmlunit.html.HtmlElement;
import com.gargoylesoftware.htmlunit.html.HtmlInput;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.xpath.XPathUtils;

HtmlElement element = page.getFirstByXPath("//input[@id='dynamicId']");

import com.gargoylesoftware.htmlunit.html.DomElement;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.parser.HTMLParser;

DomElement element = page.querySelector("input#dynamicId");

String value = element.getAttribute("value");
element.setAttribute("value", "new value");