Linux系统下Jsp验证码显示不出来解决方法

Linux系统下Jsp验证码显示不出来解决方法

错误提示：Could not initialize class sun.awt.X11GraphicsEnvironment
错误原因：tomcat没有加载java.awt.headless，修改tomcat下的/bin/catalina.sh文件：

找到-Djava.io.tmpdir="$CATALINA_TMPDIR"，在这一行的下面加入：
-Djava.awt.headless=true /

需要修改六处，改完重启tomcat。

评论

1 楼 tanyuefeng 2012-08-09  

现在我这也出这样的问题了 而且我的报的是java.lang.NullPointerException
        at sun.awt.X11FontManager.getDefaultPlatformFont(X11FontManager.java:779)
        at sun.font.SunFontManager$2.run(SunFontManager.java:432)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.font.SunFontManager.<init>(SunFontManager.java:375)
        at sun.awt.X11FontManager.<init>(X11FontManager.java:32)
        at sun.reflect.GeneratedConstructorAccessor17.newInstance(Unknown Source)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:525)
        at java.lang.Class.newInstance0(Class.java:372)
        at java.lang.Class.newInstance(Class.java:325)
        at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:83)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
        at java.awt.Font.getFont2D(Font.java:490)
        at java.awt.Font.access$000(Font.java:224)
        at java.awt.Font$FontAccessImpl.getFont2D(Font.java:228)
        at sun.font.FontUtilities.getFont2D(FontUtilities.java:180)
        at sun.java2d.SunGraphics2D.checkFontInfo(SunGraphics2D.java:607)
        at sun.java2d.SunGraphics2D.getFontInfo(SunGraphics2D.java:768)
        at sun.java2d.pipe.GlyphListPipe.drawString(GlyphListPipe.java:50)
        at sun.java2d.SunGraphics2D.drawString(SunGraphics2D.java:2829)
        at org.apache.jsp.image_jsp._jspService(image_jsp.java:111)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.joyway.gmt.common.filter.SesstionTimeOutFilter.doFilter(SesstionTimeOutFilter.java:75)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:88)
请教一下大侠怎么解决！