Programming is not at all a linear path. Often, you find yourself facing a fork in the road. In choosing one path, you are likely to find, after a period of time, that you go back and travel down the other. While it is assumed that you are familiar
SpringMVC4.3.6配置json所需要的jar包，不是使用最新最高的版本可以的，我尝试了，有错误：严重: Servlet.service() for servlet [springMVC] in context with path [/30-returnVoid-ajax] threw exception [Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: org/apache/co
