Question

import java.awt.*;
import java.applet.*;

public class MyApplet extends Applet{
    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    String dString = "Value is null";
    String gPath="";

    public void get_path(){
        gPath = this.getParameter("path");
        if(gPath == null)
            gPath = dString;
        //setBackground(Color.cyan);
    }

    public void paint(Graphics g){

        g.drawString(gPath, 20, 30);
    }
}

HTML code：

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="utf-8"/>
        <title> Upload File </title>
        <script type="text/javascript">
            var sys_path;

            function print_path(){
            sys_path = document.getElementById('name').value;
            document.app.get_path();
            document.write(sys_path);
            }

        </script>
        <applet code="MyApplet.class" name="app" width="300" height="200">
            <param name="path" value="&{sys_path};">    
        </applet>

    </head>

    <body>
        <form>

            Path:<input type="text" id="name" \>
            <input type="button" value="click" onClick="print_path();" />       

        </form>
    </body>
</html>

说明：

在这些代码中，我试图从文本框中获取输入并在applet中显示。我尝试了这几天而无法找到方法。请帮我解决这个问题。提前致谢！

如何将值从javascript传递到java applet？

0 个答案: