spring的xml配置文件报错：
在xml中使用util:map使用util:map时报错：
cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'util:map'.
<util:map> <!-- ... --> </util:map>
很明显，是xsd的原因，开头已经声明了：
xmlns:util="http://www.springframework.org/schema/util"
查看http://www.springframework.org/schema/util/spring-util.xsd，可以看到存在map的声明，没什么问题。
之后查明原因，是xsi:schemaLocation中的xsd写错了：
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/util/spring-util http://www.springframework.org/schema/util/spring-util.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
修改为：
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
原因分析，配置错了xsd的声明，导致正确的xsd没有被引入。
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