错误积累:
1、EL表达式使用了java保留关键字:
The identifier [class] is not a valid Java identifier as required by section 1.19 of the EL specification (Identifier ::= Java language identifier).
The identifier [class] is not a valid Java identifier as required by section 1.19 of the EL specification (Identifier ::= Java language identifier).
This check can be disabled by setting the system property org.apache.el.parser.SKIP_IDENTIFIER_CHECK to true.
因为我是班级模块那,特意用clazz代表班级来避开关键字class,还是不小心写错了