EL (Expression Language) is a language expression, EL can reduce the use of code written in JAVA.
1, EL expressions are constants:
<body bgcolor = " # 7fffd4 " > output digital: $ { 10 } <br> output string: $ { ' Ni Hao ' } <br> </ body>
2、
EL extracted data field
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Origin www.cnblogs.com/zhai1997/p/11620835.html
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