搭建简单Struts框架 Action/ActionForm

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使用对象 Action,ActionForm;

一：web.xml文件配置

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

<!-- 用处：设定servlet文件 访问配置 -->

<!-- 用处：设定servlet文件和struts-config文件的关联 -->

  <!--设定servlet文件配置-->

  <servlet>

  <!--设定servlet【引用】名称:用于在XML文件中使用-->

    <servlet-name>action</servlet-name>

    <!-- 将【引用】名称与实体servlet类相关联-->

    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>

   

    <!-- 将servlet与struts_config.xml文件相关联3 -->

   

    <init-param>

    <!-- 设定struts-config.xml文件的【引用】名称 -->

      <param-name>config</param-name>

      <!-- 设定与【引用】名称相关联的实体struts-config.xml文件 -->

      <param-value>/WEB-INF/struts-config.xml</param-value>

    </init-param>

    <init-param>

      <param-name>debug</param-name>

      <param-value>3</param-value>

    </init-param>

    <init-param>

      <param-name>detail</param-name>

      <param-value>3</param-value>

    </init-param>

    <load-on-startup>0</load-on-startup>

  </servlet>

  <!-- 设定servlet文件的访问地址名称 -->

  <servlet-mapping>

    <!-- 首先确定被设置的servlet文件 使用servlet文件的【引用】名称绑定 -->

    <servlet-name>action</servlet-name>

     <!-- 设定servlet文件的访问地址为　＊。do -->

    <url-pattern>*.do</url-pattern>

  </servlet-mapping>

  <!-- 设定起始页 -->

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

</web-app>



二：struts-config.xml文件配置

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd">

<!-- 设定Action和Form文件的关联 -->

<struts-config>

  <data-sources>

  

  </data-sources>

  <!-- 设定Form文件在config中的引用 -->

  <form-beans>

   <form-bean name="addForm" type="MyForm.form"></form-bean>

  </form-beans>

  <global-exceptions />

  <global-forwards />

  <!-- 设定Action文件与Form文件【引用】名称的绑定 name-->

  <!-- 设定Action文件的访问地址 path-->

  <!-- 设定Action文件的实体类 type-->

  <!-- 设定Action文件中mapping对象内的K,V元素；K=引用，V=网页地址； forward-->

  <!-- mapping.findForward("K")；相当于调转页面至V   name,path-->

  <action-mappings >

    <action

      attribute="addForm"

      name="addForm"

      path="/action"

      type="MyAction.MyAction">

      <forward name="input" path="/index.jsp" />

      <forward name="return" path="/index2.jsp" />

      <forward name="return2" path="/index3.jsp" />

    </action>

    <action

    name="addForm"

    path="/action2"

    type="MyAction.MyAction2">

      <forward name="input" path="/index.jsp" />

      <forward name="return" path="/index2.jsp" />

      <forward name="return2" path="/index3.jsp" />

    </action>

    <!-- action 调用action -->

    <action

    name="addForm"

    path="/action3"

    type="MyAction.MyAction3"

    >

    <!-- 将另一个Action的引用地址，添加到连接地址K,V集合列表中Mapping() -->

    <!-- 这样在代码中mapping.forward("地址");就可以跳转到action.do中 -->

    <!-- 这样的跳转是带值的，而且带Form对象 -->

     <forward name="return" path="/action.do"></forward>

    </action>

    <!-- 设定*.properties文件的实体对象 -->

    <!-- 用处1；存放ActionMessages信息，显示到页面 -->

  </action-mappings>

  <message-resources key="cn" parameter="com.my.struts.ApplicationResources" />

</struts-config>


三：实体Form文件

package MyForm;


import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionMapping;


public class form extends ActionForm {

private String num1;


public String getNum1() {

//测试运行

System.out.println("num1.get()");

return num1;

}

public void setNum1(String num1) {

//测试运行

System.out.println("num1.set()");

this.num1 = num1;

}

}

四：实体Action对象

对象一

package MyAction;

import java.io.IOException;


import javax.servlet.ServletException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;


public class MyAction extends Action {

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

ActionForward af = null;

//获取Form页面值

MyForm.form f = (MyForm.form)form;

//测试值

System.out.println("Form值"+f.getNum1());

//测试运行

System.out.println("Action.execute()");

//设定跳转

af = mapping.findForward("return");

//带跳转页面信息返回到servlet文件内执行跳转

return af;

}

}


对象2；

package MyAction;


import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;


public class MyAction2 extends Action{

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

MyAction ma = new MyAction();

//Action中调用另一个Action对象方法;

//同一个工程下的对象，直接生成使用

ma.execute(mapping, form, request, response);

ActionForward af = mapping.findForward("return2");

return af;

}

}

对象3

package MyAction;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionForward;


public class MyAction3 extends Action{

@Override

public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

//测试运行

System.out.println("MyAction3.execute()");

//跳转到另一个Action，return为config文件内对应Action配置下的forward属性

ActionForward af = mapping.findForward("return");

return af;

}

}







三：实体Form文件

package MyForm;


import javax.servlet.http.HttpServletRequest;

import org.apache.struts.action.ActionErrors;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionMapping;


public class form extends ActionForm {

    private String num1;


   public String getNum1() {

   //测试运行

   System.out.println("num1.get()");

   return num1;

   }

   public void setNum1(String num1) {

   //测试运行

   System.out.println("num1.set()");

   this.num1 = num1;

   }

}

四：实体Action对象

对象一

package MyAction;

import java.io.IOException;


import javax.servlet.ServletException;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;

import org.apache.struts.action.ActionMapping;


public class MyAction extends Action {

   public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response) {

   ActionForward af = null;

   //获取Form页面值

   MyForm.form f = (MyForm.form)form;

   //测试值

   System.out.println("Form值"+f.getNum1());

   //测试运行

   System.out.println("Action.execute()");

   //设定跳转

   af = mapping.findForward("return");

   //带跳转页面信息返回到servlet文件内执行跳转

   return af;

   }

}

对象2；

package MyAction;


import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionForward;


public class MyAction2 extends Action{

    public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

    MyAction ma = new MyAction();

//Action中调用另一个Action对象方法;

//同一个工程下的对象，直接生成使用

   ma.execute(mapping, form, request, response);

   ActionForward af = mapping.findForward("return2");

   return af;

   }

}

对象3

package MyAction;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;


import org.apache.struts.action.Action;

import org.apache.struts.action.ActionForm;

import org.apache.struts.action.ActionMapping;

import org.apache.struts.action.ActionForward;


public class MyAction3 extends Action{

   @Override

   public ActionForward execute(ActionMapping mapping, ActionForm form,

HttpServletRequest request, HttpServletResponse response)

throws Exception {

   //测试运行

   System.out.println("MyAction3.execute()");

   //跳转到另一个Action，return为config文件内对应Action配置下   的forward属性

   ActionForward af = mapping.findForward("return");

   return af;

   }

}