struts2 technology, page calculator function, enter two operands, respectively click on addition, subtraction, multiplication, division button, the corresponding results were calculated and displayed in the results page

使用struts2技术，实现页面计算器的功能，输入两个操作数，分别点击加法、减法、乘法、除法按钮，分别计算出相应的结果并显示在结果页面中
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.................................................................................................................................\2.png
.................................................................................................................................\3.png
.................................................................................................................................\4.png
.................................................................................................................................\5.png
.................................................................................................................................\6.png
.................................................................................................................................\Operator26
.................................................................................................................................\..........\.classpath
.................................................................................................................................\..........\.myeclipse
.................................................................................................................................\..........\.mymetadata
.................................................................................................................................\..........\.project
.................................................................................................................................\..........\.settings
.................................................................................................................................\..........\.........\.jsdtscope
.................................................................................................................................\..........\.........\org.eclipse.wst.jsdt.ui.superType.container
.................................................................................................................................\..........\.........\org.eclipse.wst.jsdt.ui.superType.name
.................................................................................................................................\..........\src
.................................................................................................................................\..........\...\action
.................................................................................................................................\..........\...\......\CalculatorAction.java
.................................................................................................................................\..........\...\struts.xml
.................................................................................................................................\..........\WebRoot
.................................................................................................................................\..........\.......\general_bg.jpg
.................................................................................................................................\..........\.......\index.jsp
.................................................................................................................................\..........\.......\META-INF
.................................................................................................................................\..........\.......\........\MANIFEST.MF
.................................................................................................................................\..........\.......\result.jsp
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