struts2引入ActionSupport

1. struts2引入ActionSupport

HelloWorldAction2.java

package com.andrew.action;
import com.opensymphony.xwork2.ActionSupport;
public class HelloWorldAction2 extends ActionSupport {
    private String name;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    @Override
    public String execute() throws Exception {
        System.out.println("执行了HelloWorldAction2 Action的默认方法");
        return SUCCESS;
    }
}

struts.xml

<action name="hello" class="com.andrew.action.HelloWorldAction2">
      <result name="success">helloWorld.jsp</result>
</action>

index.jsp

<form action="hello" method="post">
    name：<input type="text" name="name"/><input type="submit" value="Submit"/>
</form>

helloWorld.jsp

${name} 你好！

http://localhost:8080/HeadFirstStruts2Chap02/index.jsp
abc submit
运行结果：
abc你好！ 
控制台：
执行了HelloWorldAction2 Action的默认方法