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License: Apache License 2.0
spring demo
License: Apache License 2.0
主要是mybatis配置文件问题,区别与去何处加载各个Dao文件位置的问题。
区别在于一个在applicationContext.xml中配置,一个在mybatis.xml中配置。
主要是在sqlSessionFactory属性中配置mapperLocations
<!-- 配置SqlSessionFactoryBean -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis/mybatis.xml"/>
<property name="mapperLocations">
<list>
<value>classpath:mybatis/*.xml</value>
</list>
</property>
</bean>
之后在mybatis.xml 中不需要在配置mapper 的相关属性。
如果再在mybatis.xml中配置相关属性,则会报错:Result Maps collection already contains value。
区别在于在定义sqlSessionFactory时不配置mapperLocations属性,则需要在mybatis.xml中配置mappers。
<!-- 配置SqlSessionFactoryBean -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation" value="classpath:mybatis.xml"/>
</bean>
此时,需要在mybatis.xml中配置mapper的相关属性。
<mappers>
<mapper resource="mybatis/user-mapper.xml"/>
……
</mappers>
1.在web.xml中配置了servlet
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
这个 "/" 意味着DispatcherServlet处理所有的请求,包含静态资源,但静态资源没有相应的处理器,所以会读取不到。
对静态资源的过滤主要有两种方式:
<!-- 新 Bootstrap 核心 CSS 文件 -->
<link href="http://apps.bdimg.com/libs/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet">
<!-- 可选的Bootstrap主题文件(一般不使用) -->
<script src="http://apps.bdimg.com/libs/bootstrap/3.2.0/css/bootstrap-theme.min.css"></script>
<!-- jQuery文件。务必在bootstrap.min.js 之前引入 -->
<script src="http://apps.bdimg.com/libs/jquery/1.11.1/jquery.min.js"></script>
<!-- 最新的 Bootstrap 核心 JavaScript 文件 -->
<script src="http://apps.bdimg.com/libs/bootstrap/3.2.0/js/bootstrap.min.js"></script>
目前不在配置文件中加相应配置就可以读取到文件。
2.本地文件引入
首先要在spring配置文件中配置
<!-- 对静态资源的处理-->
<mvc:default-servlet-handler/>
<mvc:annotation-driven/>
对静态资源处理有3种方式。具体参照:springMVC对静态资源访问的处理
两个配置要协同使用。
本项目基于maven,静态资源挡在webapp下。
访问方式:
<script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery-3.1.0.min.js"></script>
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