我想在我的JSP应用程序中绘制简单的2D事物。我发现这http://ditchnet.org/2d/标签库，但如果我开始我的web应用程序我碰到下面的错误预期它不工作... ：JSP java2d JSP 2d Taglib - 犀牛给我一个错误
org.apache.jasper.JasperException: An exception occurred processing JSP page /index.jsp at line 20
17: 18:
Hello World!
19: 20: 21:
22: // create red gradient paint 23: var color1 = new java.awt.Color(0xC80021);Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:398) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
root cause
javax.servlet.ServletException: javax.servlet.jsp.JspException: Rhino encountered an error while evaluating the JavaScript in the tag with id 'polygon': null
所以说我和多边形标签为空。但它不是你们都能看到的... 任何人都有一个好主意？ :) 或者也许另一种解决方案在jsp中绘制2d的东西？ 谢谢！