DispatchAction

来源：互联网发布：自我认知知乎编辑：程序博客网时间：2024/05/16 14:59

DispatchAction的转向,可以将所有的Action合为一个Action

package com.bjsxt.drp.web.usermgr.actions;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.beanutils.BeanUtils;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;
import com.bjsxt.drp.business.usermgr.manager.UserManager;
import com.bjsxt.drp.business.usermgr.model.User;
import com.bjsxt.drp.web.usermgr.forms.UserActionForm;
/**
 * 处理用户管理的Action
 * @author Administrator
 *
 */
public class UserAction extends DispatchAction {
    @Override
    protected ActionForward unspecified(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
            System.out.println("--------UserAction.unspecified()----------");
        return null;
    }//这个方法是在没有指定具体的方法名的情况下会自动调用
    /**
     * 用户添加
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return
     * @throws Exception
     */
    public ActionForward add(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        //获取从页面表单中提交过来的值 
        UserActionForm uaf = (UserActionForm)form;
        
        //创建User实体对象，并将ActionForm中的内容设置到User对象中 
        System.out.println("姓名:"+uaf.getUserName());
        
        User user = new User();
        user.setUserId(uaf.getUserId());
        user.setUserName(uaf.getUserName());
        user.setPassword(uaf.getPassword());
        user.setEmail(uaf.getEmail());
        user.setContactTel(uaf.getContactTel());
        user.setCreateDate(new Date());
//      User user = new User(); 
//      BeanUtils.copyProperties(user, uaf); 
//      user.setCreateDate(new Date()); 
        
        //调用业务逻辑操作 
        UserManager.getInstance().addUser(user);
        return mapping.findForward("add_success");
    }
    /**
     * 用户删除
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return
     * @throws Exception
     */
    public ActionForward del(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        UserActionForm uaf = (UserActionForm)form;
        //取得需要删除的userId的集合 
        String[] userIdList = uaf.getSelectFlag();
        //调用业务逻辑操作 
        UserManager.getInstance().deleteUsers(userIdList);
        return mapping.findForward("del_success");
    }
    public ActionForward find(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        //获取从页面表单中提交过来的值 
        UserActionForm uaf = (UserActionForm)form;
        
        String userId = uaf.getUserId();
        
        //调用业务逻辑操作 
        User user = UserManager.getInstance().findUserById(userId);
        
        //将user对象从Action传递到JSP页面 
        request.setAttribute("user", user);
        
        return mapping.findForward("find_success");
    }
    public ActionForward list(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        //调用业务逻辑操作 
        List userList = UserManager.getInstance().findAllUserList();
        request.setAttribute("userlist", userList);
        
        return mapping.findForward("list_success");
    }
    public ActionForward modify(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        //获取从页面表单中提交过来的值 
        UserActionForm uaf = (UserActionForm)form;
        
//      //创建User实体对象，并将ActionForm中的内容设置到User对象中 
//      User user = new User(); 
//      user.setUserId(uaf.getUserId()); 
//      user.setUserName(uaf.getUserName()); 
//      user.setPassword(uaf.getPassword()); 
//      user.setEmail(uaf.getEmail()); 
//      user.setContactTel(uaf.getContactTel()); 
//      user.setCreateDate(new Date()); 
        
        User user = new User();
        BeanUtils.copyProperties(user, uaf);
        user.setCreateDate(new Date());
        
        //调用业务逻辑操作 
        UserManager.getInstance().modifyUser(user);
        
        return mapping.findForward("modify_success");
    }
}

Struts-config.xml文件的具体配置

<struts-config>
    
    <form-beans>
        <form-bean name="userForm" type="com.bjsxt.drp.web.usermgr.forms.UserActionForm"></form-bean>
    </form-beans>
    
    <action-mappings>
        <action path="/user/usermiant"
                type="com.bjsxt.drp.web.usermgr.actions.UserAction"
                name="userForm"
                scope="request"
                parameter="command"
        >
            <forward name="add_success" path="/user/usermiant.do?command=list" redirect="true" />
            <forward name="del_success" path="/user/usermiant.do?command=list" redirect="true" />
            <forward name="find_success" path="/user/user_modify.jsp" />
            <forward name="list_success" path="/user/user_list.jsp" />
            <forward name="modify_success" path="/user/usermiant.do?command=list" redirect="true" />
        </action>
            </action-mappings>
    
    <controller processorClass="com.bjsxt.drp.CharacterEncode.MyRequestProcessor" />
    
    
    
    <message-resources parameter="MessageResources" />
    
</struts-config>

页面调用时个具体

<%@ page language="java" contentType="text/html; charset=GB2312" pageEncoding="gb2312"%>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=GB2312">
        <title>添加用户</title>
        <link rel="stylesheet" href="../style/drp.css">
        <script src="../script/client_validate.js"></script>
        <script type="text/javascript">
    function addUser() {
        if (document.getElementById("userId").value.length <4) {
            alert("用户代码不能小于4个字符！");
            document.getElementById("userId").focus();
            return;
        }
        var firstChar = document.getElementById("userId").value.charAt(0);
    
        if (!(firstChar >= 'a' && firstChar <='z')) {
            alert("用户代码首字符必须为字母");
            document.getElementById("userId").focus();
            return;
        }
        if(document.getElementById("userName").value == "") {
            alert("用户名称不能为空！");
            document.getElementById("userName").focus();
            return;
        }
        if (document.getElementById("password").value.length <6) {
            alert("输入的密码不能小于6位字符");
            document.getElementById("password").focus();
            return;
        }
        with (document.getElementById("userForm")) {
            method = "post";
            action = "usermiant.do?command=add";
            submit();
        }
    }
    function goBack() {
        window.self.location ="usermiant.do?command=list"
    }
    
    function init() {
        document.userForm.userId.focus();
    }
</script>
    </head>
<%
    request.setCharacterEncoding("gb2312");
    response.setCharacterEncoding("gb2312");
%>
    <body class="body1">
        <form name="userForm" target="_self" id="userForm">
            <div align="center">
                <table width="95%" border="0" cellspacing="2" cellpadding="2">
                    <tr>
                        <td>
                             
                        </td>
                    </tr>
                </table>
                <table width="95%" border="0" cellspacing="0" cellpadding="0"
                    height="25">
                    <tr>
                        <td width="522" class="p1" height="25" nowrap>
                            <img src="../images/mark_arrow_03.gif" width="14" height="14">
                             
                            <b>系统管理>>用户维护>>添加</b>
                        </td>
                    </tr>
                </table>
                <hr width="97%" align="center" size=0>
                <table width="95%" border="0" cellpadding="0" cellspacing="0">
                    <tr>
                        <td width="22%" height="29">
                            <div align="right">
                                <font color="#FF0000">*</font>用户代码: 
                            </div>
                        </td>
                        <td width="78%">
                            <input name="userId" type="text" class="text1" id="userId"
                                size="10" maxlength="10">
                        </td>
                    </tr>
                    <tr>
                        <td height="26">
                            <div align="right">
                                <font color="#FF0000">*</font>用户名称: 
                            </div>
                        </td>
                        <td>
                            <input name="userName" type="text" class="text1" id="userName"
                                size="20" maxlength="20">
                        </td>
                    </tr>
                    <tr>
                        <td height="26">
                            <div align="right">
                                <font color="#FF0000">*</font>密码: 
                            </div>
                        </td>
                        <td>
                            <label>
                                <input name="password" type="password" class="text1"
                                    id="password" size="20" maxlength="20">
                            </label>
                        </td>
                    </tr>
                    <tr>
                        <td height="26">
                            <div align="right">
                                联系电话: 
                            </div>
                        </td>
                        <td>
                            <input name="contactTel" type="text" class="text1"
                                id="contactTel" size="20" maxlength="20">
                        </td>
                    </tr>
                    <tr>
                        <td height="26">
                            <div align="right">
                                email: 
                            </div>
                        </td>
                        <td>
                            <input name="email" type="text" class="text1" id="email"
                                size="20" maxlength="20">
                        </td>
                    </tr>
                </table>
                <hr width="97%" align="center" size=0>
                <div align="center">
                    <input name="btnAdd" class="button1" type="button" id="btnAdd"
                        value="添加" onClick="addUser()">
                        
                    <input name="btnBack" class="button1" type="button" id="btnBack"
                        value="返回" onclick="goBack()" />
                </div>
            </div>
        </form>
    </body>
</html>