javaEE框架获取和传参要使用的类和接口

Posted 2020-09-18 智云

1：spring

 2:struts2获取前台数据(action中获取)

    //4修改用户密码、
    public String updateUserPassword() throws Exception{
        Map session=ActionContext.getContext().getSession();
        User user1=(User) session.get("user");
        //user1.getPassword()获取的是数据库密码。||pwd1获取的是jsp输入密码
        if (user1.getPassword().equals(getPwd1())) {
            user1.setPassword(password);
            userService.addOrUpdateUser(user1);
            session.remove("user");//它的作用是移除jsp页面输入的数据
            return SUCCESS;
        }else{
            Map request= (Map) ActionContext.getContext().get("request");
            request.put("msg", "旧密码错误");
            return ERROR;
        }
    }    

 2.2:在jsp值利用strut获取后台数据库数据

    <s:form action="updateUserDetail.action" method="post">
    <!--下面的"%"难  -->
    
    <s:textfield label="真实姓名" value="%{#session.user.userdetail.truename}" name="userdetail.truename"></s:textfield>
    <s:radio list="#{1:\'男\',0:\'女\' }" label="性别" value="%{#session.user.userdetail.xb}" name="userdetail.xb"></s:radio>
    <tr><td></td><td>
    <s:textfield label="出生日期" value="%{#session.user.userdetail.csrq}" name="userdetail.csrq"></s:textfield>
    </td>
    </tr>
    <s:textfield label="E-mail" name="userdetail.email" value="%{#session.user.userdetail.email}"></s:textfield>
   <s:textfield label="手机" name="userdetail.phone" value="%{#session.user.userdetail.phone}"></s:textfield>
   <s:textfield label="地址" name="userdetail.address" value="%{#session.user.userdetail.address}"></s:textfield>
   <s:submit value="确认"></s:submit>

    </s:form>

 3:hibernate处理数据库数据

    //org.hibernate.SessionFactory一般继承hibernate
    private SessionFactory sessionFactory;
        //它们在同一个类中，下面举例一个方法
    public List getNewFlower() {
        Session session = sessionFactory.openSession();
        Transaction tx = session.beginTransaction();
        // 为什么这么写。因为select * 被hibernate添加写了
        Query query = session.createQuery("from Flower order by flowerid desc");
        query.setFirstResult(0);
        query.setMaxResults(4);
        List flowers = query.list();
        tx.commit();
        session.close();
        return flowers;
    }