1.配置文件中路径是指相对src/main/resources路径。比如applicationContext_mapper.xml的

location="classpath:db.properties"，是指src/main/resources目录下的db.properties文件。同理，web.xml中的classpath

2.在pom中配置资源放行，用resources标签。

	<!-- 配置文件放行 -->
    <resources>
		<resource>
			<directory>src/main/java</directory>
			<includes>
				<include>**/*.properties</include>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
		<!-- 放行main/resources下的配置文件 如果不放行spring mybatis等配置文件不会被打到包里从而导致错误 -->
		<resource>
			<directory>src/main/resources</directory>
			<includes>
				<include>**/*.properties</include>
				<include>**/*.xml</include>
			</includes>
			<filtering>false</filtering>
		</resource>
	</resources>