Chapter 4: Example 1: Basic Framework

Chapter 4: Example 1: Basic Framework

一个最简单的例子，用来熟悉Struts的基本用法

说明：实例一是最简单的Struts程序。它仅仅使用了1个form和1个action
功能是将首页输入的值传递给action，经过判断后返回结果。如果是空则返回empty
代码如下：

input.jsp：
<form method="post" action="/example.do"> 请输入值 <input type="text" name="test"/> <br><br> <input type="submit" name="Submit" > <input name="reset" type="reset" > </form>

struts-config.xml:
<struts-config> // 配置formbean <form-beans> <form-bean name="exampleActionForm" type="com.zotn.struts.example1.ExampleActionForm" /> </form-beans> // 配置action <action-mappings> <action name="exampleActionForm" path="/example" type="com.zotn.struts.example1.ExampleAction"> // action内部的foward <forward name="foward" path="/foward.jsp" /> </action> </action-mappings> </struts-config>

Action:
public class ExampleAction extends Action { public ActionForward execute(ActionMapping actionMapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) { // 得到对应的form ExampleActionForm eaf = (ExampleActionForm)actionForm; // 取得输入的test String test = eaf.getTest(); // 判断并将值放入request if ("".equals(test)){ request.setAttribute("test","empty"); }else{ request.setAttribute("test",test); } // 通过mapping寻找相应的url,返回ActionFoward return actionMapping.findForward("foward"); } }

FormBean:
public class ExampleActionForm extends ActionForm { private String test; public String getTest() { return test; } public void setTest(String test) { this.test = test; } }