事实上 <bean id="u" class="com.bjsxt.dao.impl.UserDAOImpl"> </bean> 也可以是 <bean name="u" class="com.bjsxt.dao.impl.UserDAOImpl"></bean> 两者一般情况下可以相互替换 唯一不同的就是name可以是一些特殊字符.…

首先更改配置文件 <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframewor…

<bean id="userService" class="com.bjsxt.service.UserService" scope="prototype"> <!-- <property name="userDAO" ref="u" /> --> <constructor-arg> <ref bean="u"/> </c…

直接上例子 引入spring以及Junite所需要的jar包 User.java package com.bjsxt.model; public class User { private String username; private String password; public String getUsername() { return username; } public void setUsername(String username) { this.username = userna…

项目分层: 1.最土的方法是直接写到main中去 2.分出model层 2.如下 4.在抽象一个对数据库的访问层(跨数据库实现) 面向抽象编程 User.java package com.bjsxt.model; public class User { private String username; private String password; public String getUsername() { return username; } public void setUsername(…

Xml 方法 在student.hbm.xml中 <generator class="uuid"></generator> 取值如下 1.identity:用于MySql数据库.特点:递增 <id name="id" column="id"> < generator class="identity"/> </id> 注:对于MySql数据库使用递增序列时需要在建表时对…

resource resource beans.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http:/…

使用annotation首先得加这两条代码 beans.xml <?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="ht…

Userservice.java package com.bjsxt.service; import com.bjsxt.dao.UserDAO; import com.bjsxt.model.User; public class UserService { private UserDAO userDAO; public void init() { System.out.println("init"); } public void add(User user) { userDAO.sa…

UserDaoImpl package com.bjsxt.dao.impl; import com.bjsxt.dao.UserDAO; import com.bjsxt.model.User; public class UserDAOImpl implements UserDAO { private int daoId; public int getDaoId() { return daoId; } public void setDaoId(int daoId) { this.daoId =…