在这个例子中，我们将提取并打印表单参数，如参数名称和参数值。 为此，我们调用Document类的getElementById()方法和Element类的getElementsByTag()方法。
创建一个HTML文件：register.html，代码如下 -
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Register Please</title>
</head>
<body>
<form id="registerform" action="register.jsp" method="post">
Name:<input type="text" name="name" value="maxsu"/><br/>
Password:<input type="password" name="password" value="sj"/><br/>
Email:<input type="email" name="email" value="maxsu@gmail.com"/><br/>
<input name="submitbutton" type="submit" value="register"/>
</form>
</body>
</html>
`
创建一个Java类文件：JsoupPrintFormParameters.java，代码如下 -
import java.io.File;
import java.io.IOException;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
public class JsoupPrintFormParameters {
public static void main(String[] args) throws IOException {
Document doc = Jsoup.parse(new File("e:\\register.html"),"utf-8");
Element loginform = doc.getElementById("registerform");
Elements inputElements = loginform.getElementsByTag("input");
for (Element inputElement : inputElements) {
String key = inputElement.attr("name");
String value = inputElement.attr("value");
System.out.println("Param name: "+key+" \nParam value: "+value);
}
}
}
执行结果 -
Param name: name
Param value: maxsu
Param name: password
Param value: sj
Param name: email
Param value: maxsu@gmail.com
Param name: submitbutton
Param value: register
自已编程运行看看吧
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