JFinal 3.1 针对 3.0 版推出的魔板引擎进行了深度打磨，例如魔板 parse 异常提示更加友好明确，消除指令嵌套时多出来的一个换行符，对于模板 isModified() 逻辑进行了重构，消除冗余代码，可读性更好。(JFinal 3.1 for the magic board engine version 3 launched the depth of grinding, such as the parse magic board abnormal more friendly and clear, a newline elimination instruction when nesting more out of the match, the template isModified () the logic of reconstruction, eliminate redundant code, better readability.)