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<span style="font-family: 宋体, Arial; background-color: rgb(255, 255, 255);">1.如何写Action类？</span>? 1）public String execute(){}
? 2) public String methodName(){}
? 3) extends ActionSupport
2.Action的方法，怎么样跟请求对应?
?? 1）什么都不指定，默认调用Action的execute
?? 2）在struts.xml action的method属性指定
<span style="color: rgb(102, 102, 102);"><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<include file="struts-default.xml"></include>
<package name="dd" extends="struts-default" namespace="/">
<action name="login" class="com.xiaochuan.LoginAction" </span><span style="color:#ff0000;"><strong>method="login"</strong></span><span style="color:#666666;">>
<result name="success">/welcome.jsp</result>
<result name="fail">.index.jsp</result>
</action>
</package>
</struts> </span>
<span style="color:#666666;"><body>
<form action="</span><span style="font-family: 宋体, Arial; font-size: 16px; line-height: 26px;"><strong><span style="color:#ff0000;">login!add.action?</span></strong></span><span style="color:#666666;">" method="post">
<input type="text" name="username"><br/>
<input type="text" name="password"><br/>
<input type="submit" name="reset"><br/>
</form>
</body></span>
<span style="color:#666666;"><s:form action="login.action" method="post">
<input type="text" name="username"><br/>
<input type="text" name="password"><br/>
<input type="submit" name="reset"><br/>
<s:sumbit name="login" value="登录" </span><strong><span style="color:#ff0000;">method="login"</span></strong><span style="color:#666666;">></s:sumbit>
<s:sumbit name="add" value="添加" method="add"></s:sumbit>
</s:form></span> ?<action name="user_*" class="com.xiaochuan.Login.Action" method="{1}">
? <result name="success">/welcom.jsp</result>
? <result name="fail">/index.jsp</result>
? </action>
3.Action中怎么获取作用域通讯对象
?? 1）IOC
????? Struts2? （Action对象）
????? HttpServletRequest （Tomcat）
步骤:实现接口SessionAware,重写setSession()方法,在login中调用session.put("key","value");
public class LoginAction extends ActionSupport implements SessionAware,
ServletRequestAware {
private String userName;
private String password;
private String message;
private Map session = null;
private HttpServletRequest request = null;
/**
* Action中如何获取作用域通讯对象 s1）IOC Struts2 （Action对象）
* 步骤:实现接口SessionAware,重写setSession()方法,在login中调用session.put("key","value");
* HttpServletRequest （Tomcat）
* 实现接口ServletRequestAware接口,重写setServletRequest()方法 2）非IOC
*
*/
public String login() {
String result = "success";
message = "登录成功";
System.out.println(userName + " " + password);
if (userName == null || userName.equals("")) {
result = "fail";
message = "登录失败";
} else {
// 获取session
// 在session中放一个用户登陆成功标记
session.put("LOGIN_FLAG", userName);
// 非IOC
Map s1 = ActionContext.getContext().getSession();
HttpServletRequest req = ServletActionContext.getRequest();
}
return result;
}
// 重写了SessionAware接口中的setSession方法
public void setSession(Map<String, Object> arg0) {
this.session = arg0;
} ?struts2将session用map为了：实现容器的解耦（测试时只需要在JUnit测试,只需要在Map中看有无值,否则需要在tomcat下测试）
?? 2）非IOC
????? HttpServletRequest req?=?ServletActionContext.getRequest();
