myBatis学习
最近用到了mybatis开发项目，也是现学现用，这里说一说使用使用过程中学到的和遇到的知识和问题 1.首先要先导入mybatis的jar包 2.建立相关的配置文件 applicationContext-mybatis.xml 如： ?xml version=1.0 encoding=UTF-8 ? !DOCTYPE configuration PUBLIC
最近用到了mybatis开发项目，也是现学现用，这里说一说使用使用过程中学到的和遇到的知识和问题
1.首先要先导入mybatis的jar包
2.建立相关的配置文件 applicationContext-mybatis.xml
如：
3.这里的dao为借口，不需要实现方法，建立配置文件映射如图hibernate中的.hbm.xml文件,所不同的是mybatis是没有hibernate的面向对象完全，这里需要
进行sql组装：
br>
PUBLIC "-//ibatis.apache.org//DTD Mapper 3.0//EN"
"http://ibatis.apache.org/dtd/ibatis-3-mapper.dtd">
....
sql 拼接，支持Ognl标签
如：
可以用${}取值
也可以用#{}取值
其中
#和$方式的区别在于一个是预编译方式，安全的，一个是直接拼接，不安全，可以sql注入
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