OA学习笔记-008-岗位管理Action层实现

一、分析

1，设计实体/表
设计实体 --> JavaBean --> hbm.xml --> 建表

2，分析有几个功能，对应几个请求。

3，实现功能：
1，写Action类，写Action中的方法，确定Service中的方法。
2，写Service方法，确定Dao中的方法。
3，写Dao方法。
4，写JSP

============================

请求数量 地址栏
转发 1 不变
重定向 2 变化

增删改查共4个功能，需要6个请求。
所以需要相应的6个Action方法，每个Action方法处理一种请求。

作用 方法名 返回值 对应的页面
----------------------------------------------------
列表 list() list list.jsp
删除 delete() toList
添加页面 addUI() addUI addUI.jsp
添加 add() toList
修改页面 editUI() editUI editUI.jsp
修改 edit() toList

<result name="toList" type="redirectAction">role_list</result>

role_* ---> {1}

role_list list
role_addUI addUI
role_delete delete

二、代码

1.Action层

package cn.itcast.oa.view.action;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import cn.itcast.oa.domain.Role;
import cn.itcast.oa.service.RoleService;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

@Controller
@Scope("prototype")
public class RoleAction extends ActionSupport implements ModelDriven<Role> {

    private static final long serialVersionUID = 1L;

    @Resource
    private RoleService roleService;

    // private Long id;
    // private String name;
    // private String description;

    private Role model = new Role();

    public Role getModel() {
        return model;
    }

    /** 列表 */
    public String list() throws Exception {
        List<Role> roleList = roleService.findAll();
        ActionContext.getContext().put("roleList", roleList);
        return "list";
    }

    /** 删除 */
    public String delete() throws Exception {
        roleService.delete(model.getId());
        return "toList";
    }

    /** 添加页面 */
    public String addUI() throws Exception {
        return "saveUI";
    }

    /** 添加 */
    public String add() throws Exception {
        // // 封装到对象中
        // Role role = new Role();
        // role.setName(model.getName());
        // role.setDescription(model.getDescription());
        //
        // // 保存到数据库
        // roleService.save(role);

        roleService.save(model);

        return "toList";
    }

    /** 修改页面 */
    public String editUI() throws Exception {
        // 准备回显的数据
        Role role = roleService.getById(model.getId());
        ActionContext.getContext().getValueStack().push(role);

        return "saveUI";
    }

    /** 修改 */
    public String edit() throws Exception {
        // 1，从数据库中获取原对象
        Role role = roleService.getById(model.getId());

        // 2，设置要修改的属性
        role.setName(model.getName());
        role.setDescription(model.getDescription());

        // 3，更新到数据库
        roleService.update(role);

        return "toList";
    }

    // ---

    // public Long getId() {
    // return id;
    // }
    //
    // public void setId(Long id) {
    // this.id = id;
    // }
    //
    // public String getName() {
    // return name;
    // }
    //
    // public void setName(String name) {
    // this.name = name;
    // }
    //
    // public String getDescription() {
    // return description;
    // }
    //
    // public void setDescription(String description) {
    // this.description = description;
    // }
}

2.Service层

package cn.itcast.oa.service.impl;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import cn.itcast.oa.dao.RoleDao;
import cn.itcast.oa.domain.Role;
import cn.itcast.oa.service.RoleService;

@Service
@Transactional
public class RoleServiceImpl implements RoleService {

    @Resource
    private RoleDao roleDao;

    public Role getById(Long id) {
        return roleDao.getById(id);
    }

    public void delete(Long id) {
        roleDao.delete(id);
    }

    public void save(Role role) {
        roleDao.save(role);
    }

    public void update(Role role) {
        roleDao.update(role);
    }

    public List<Role> findAll() {
        return roleDao.findAll();
    }

}

3.Dao层

@Repository    //这里写了@Repository，则父类BaseDaoImpl的sessionFactory可以注入
public class RoleDaoImpl extends BaseDaoImpl<Role> implements RoleDao {

}

4.View层

(1)saveUI.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
    <title>岗位设置</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <script language="javascript" src="${pageContext.request.contextPath}/script/jquery.js"></script>
    <script language="javascript" src="${pageContext.request.contextPath}/script/pageCommon.js" charset="utf-8"></script>
    <script language="javascript" src="${pageContext.request.contextPath}/script/PageUtils.js" charset="utf-8"></script>
    <link type="text/css" rel="stylesheet" href="${pageContext.request.contextPath}/style/blue/pageCommon.css" />
    <script type="text/javascript"> 
    </script>
</head>
<body> 

<!-- 标题显示 -->
<div id="Title_bar">
    <div id="Title_bar_Head">
        <div id="Title_Head"></div>
        <div id="Title"><!--页面标题-->
            <img border="0" width="13" height="13" src="${pageContext.request.contextPath}/style/images/title_arrow.gif"/> 岗位设置
        </div>
        <div id="Title_End"></div>
    </div>
</div>

<!--显示表单内容-->
<div id="MainArea">

    <s:form action="role_%{ id == null ? 'add' : 'edit' }">
        <s:hidden name="id"></s:hidden>
    
        <div class="ItemBlock_Title1"><!-- 信息说明<DIV CLASS="ItemBlock_Title1">
            <IMG BORDER="0" WIDTH="4" HEIGHT="7" SRC="${pageContext.request.contextPath}/style/blue/images/item_point.gif" /> 岗位信息 </DIV>  -->
        </div>
        
        <!-- 表单内容显示 -->
        <div class="ItemBlockBorder">
            <div class="ItemBlock">
                <table cellpadding="0" cellspacing="0" class="mainForm">
                    <tr>
                        <td width="100">岗位名称</td>
                        <td><s:textfield name="name" cssClass="InputStyle" /> *</td>
                    </tr>
                    <tr>
                        <td>岗位说明</td>
                        <td><s:textarea name="description" cssClass="TextareaStyle"></s:textarea></td>
                    </tr>
                </table>
            </div>
        </div>
        
        <!-- 表单操作 -->
        <div id="InputDetailBar">
            <input type="image" src="${pageContext.request.contextPath}/style/images/save.png"/>
            <a href="javascript:history.go(-1);"><img src="${pageContext.request.contextPath}/style/images/goBack.png"/></a>
        </div>
    </s:form>
</div>

</body>
</html>

(2)list.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
    <head>
        <title>My JSP 'index.jsp' starting page</title>
    </head>
    <body>
        
        <%-- 
        <s:iterator value="#roleList">
            <s:property value="id"/>,
            <s:property value="%{name}"/>,
            <s:property value="description"/>,
            <s:a action="role_delete?id=%{id}" onclick="return confirm('确定要删除吗？')">删除</s:a>,
            <s:a action="role_editUI?id=%{id}">修改</s:a>
            <br/>
        </s:iterator>
        --%>

        <s:iterator value="#roleList">
            ${id},
            ${name},
            ${description}, 
            <s:a action="role_delete?id=%{id}" onclick="return confirm('确定要删除吗？')">删除</s:a>,
            <s:a action="role_editUI?id=%{id}">修改</s:a>
            <br/>
        </s:iterator>
    
        <br/>
        <s:a action="role_addUI">添加</s:a>
    
    </body>
</html>