Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.enation.javashop.core.service.impl.HtmlToJpgUtil]: Constructor threw exception; nested exception is java.awt.HeadlessException: 
No X11 DISPLAY variable was set, but this program performed an operation which requires it. 
 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:115) 
 at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:61) 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:877) 
 ... 31 more 
Caused by: java.awt.HeadlessException: 
No X11 DISPLAY variable was set, but this program performed an operation which requires it. 
 at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:159) 
 at java.awt.Window.<init>(Window.java:431) 
 at java.awt.Frame.<init>(Frame.java:403) 
 at java.awt.Frame.<init>(Frame.java:368) 
 at javax.swing.JFrame.<init>(JFrame.java:158) 
 at com.enation.javashop.core.service.impl.HtmlToJpgUtil.<init>(HtmlToJpgUtil.java:18) 
 at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) 
 at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) 
 at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
 at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 
 at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:100) 
 ... 33 more
                










