Caused by: java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment

在验证码的显示问题出现如下错误:
Caused by: java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment

修改 T O M C A T H O M E / b i n / c a t a l i n a . s h {TOMCAT_HOME}/bin/catalina.sh或 {TOMCAT_HOME}/bin/catalina.bat文件:

在所有类似以下代码:

   "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
      -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
      -Djava.security.manager \
      -Djava.security.policy=="$CATALINA_BASE"/conf/catalina.policy \
      -Dcatalina.base="$CATALINA_BASE" \
      -Dcatalina.home="$CATALINA_HOME" \
      -Djava.io.tmpdir="$CATALINA_TMPDIR" \

在尾部加上一句:

   -Djava.awt.headless=true \

修改后内容如下:

  exec "$_RUNJAVA" $JAVA_OPTS $CATALINA_OPTS \
      -Djava.endorsed.dirs="$JAVA_ENDORSED_DIRS" -classpath "$CLASSPATH" \
      -Dcatalina.base="$CATALINA_BASE" \
      -Dcatalina.home="$CATALINA_HOME" \
      -Djava.io.tmpdir="$CATALINA_TMPDIR" \
      -Djava.awt.headless=true \

以tomcat6.0为例,总共有七处这样的地方,修改好后即可。

内容转自https://blog.csdn.net/qiuhan/article/details/47723199

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