Junit 单元测试报错 java.lang.NoClassDefFoundError: javax/el/ELManager

validate 类在单元测试的时候报错找不到 javax/El
解决方案：
在pom文件添加以下依赖

		<dependency>
            <groupId>javax.el</groupId>
            <artifactId>javax.el-api</artifactId>
            <version>3.0.1-b01</version>
        </dependency>
        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.el</artifactId>
            <version>2.2.4</version>
        </dependency>