java_lang_ClassNotFoundException该如何解决？

问题分析：
ClassNotFoundException是通过Class.forName(java.lang.String)等方式试图通过String找到类而未找到的报错，这种错误只能在运行期抛出。
解决方案：
通过Class.forName(java.lang.String)等方式试图通过String找到类而未找到的报错，这种错误只能在运行期抛出，请确认类路径正确并已正确引用。
代码示例：

1. [backcolor=transparent]    [backcolor=transparent]package[backcolor=transparent] com[backcolor=transparent].[backcolor=transparent]alibaba[backcolor=transparent].[backcolor=transparent]mqc[backcolor=transparent].[backcolor=transparent]test[backcolor=transparent];
3. [backcolor=transparent]    [backcolor=transparent]import[backcolor=transparent] java[backcolor=transparent].[backcolor=transparent]lang[backcolor=transparent].[backcolor=transparent]reflect[backcolor=transparent].[backcolor=transparent]InvocationTargetException[backcolor=transparent];
4. [backcolor=transparent]    [backcolor=transparent]import[backcolor=transparent] java[backcolor=transparent].[backcolor=transparent]lang[backcolor=transparent].[backcolor=transparent]reflect[backcolor=transparent].[backcolor=transparent]Method[backcolor=transparent];
6. [backcolor=transparent]    [backcolor=transparent]//简单的反射demo
7. [backcolor=transparent]    [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]class[backcolor=transparent] V [backcolor=transparent]{
8. [backcolor=transparent]        [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] printf[backcolor=transparent](){
9. [backcolor=transparent]            [backcolor=transparent]System[backcolor=transparent].[backcolor=transparent]out[backcolor=transparent].[backcolor=transparent]println[backcolor=transparent]([backcolor=transparent]"printf"[backcolor=transparent]);
10. [backcolor=transparent]        [backcolor=transparent]}
11. [backcolor=transparent]        [backcolor=transparent]public[backcolor=transparent] [backcolor=transparent]static[backcolor=transparent] [backcolor=transparent]void[backcolor=transparent] main[backcolor=transparent]([backcolor=transparent]String[backcolor=transparent][][backcolor=transparent] args[backcolor=transparent])[backcolor=transparent] [backcolor=transparent]throws[backcolor=transparent] [backcolor=transparent]ClassNotFoundException[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]SecurityException[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]NoSuchMethodException[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]IllegalArgumentException[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]IllegalAccessException[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]InvocationTargetException[backcolor=transparent],[backcolor=transparent] [backcolor=transparent]InstantiationException[backcolor=transparent] [backcolor=transparent]{
12. [backcolor=transparent]            [backcolor=transparent]Class[backcolor=transparent] c [backcolor=transparent]=[backcolor=transparent] [backcolor=transparent]Class[backcolor=transparent].[backcolor=transparent]forName[backcolor=transparent]([backcolor=transparent]"com.alibaba.mqc.test.V"[backcolor=transparent]);
13. [backcolor=transparent]            [backcolor=transparent]Method[backcolor=transparent] m [backcolor=transparent]=[backcolor=transparent] c[backcolor=transparent].[backcolor=transparent]getDeclaredMethod[backcolor=transparent]([backcolor=transparent]"printf"[backcolor=transparent],[backcolor=transparent]null[backcolor=transparent]);
14. [backcolor=transparent]            m[backcolor=transparent].[backcolor=transparent]invoke[backcolor=transparent]([backcolor=transparent]c[backcolor=transparent].[backcolor=transparent]newInstance[backcolor=transparent](),[backcolor=transparent]null[backcolor=transparent]);
15. [backcolor=transparent]        [backcolor=transparent]}
16. [backcolor=transparent]    [backcolor=transparent]}

1. 
   https://docs.oracle.com/javase/7/docs/api/java/lang/ClassNotFoundException.html
2. 
   http://www.cnblogs.com/xing901022/p/4185514.html