java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironment
請求驗證碼時後臺報錯：java.lang.NoClassDefFoundError: Could not initialize class sun.awt.X11GraphicsEnvironmentjava
該問題的解決方法：
在Tomcat/bin/catalina.sh 中的JAVA_OPTS選項後增長-Djava.awt.headless=true服務器
對於一個Java服務器來講常常要處理一些圖形元素，例如地圖的建立或者圖形和圖表等。這些API基本上老是須要運行一個X-server以便能使用AWT（Abstract Window Toolkit，抽象窗口工具集）。less
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