在jar文件“Lorg”中生成jasper报告问题

java.lang.NoClassDefFoundError: Lorg/jfree/chart/plot/PlotOrientation;
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Unknown Source)
    at java.lang.Class.getDeclaredField(Unknown Source)
    at java.io.ObjectStreamClass.getDeclaredSUID(Unknown Source)
java.lang.NoClassDefFoundError: Lorg/jfree/char