通配符的匹配很全面, 但无法找到元素 ‘util:map‘ 的声明通配符的匹配很全面, 但无法找到元素 ‘context:property-placeholder‘ 的声明

第一个异常：
dsdorg.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 183 in XML document from class path resource [ApplicationContext.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 183; columnNumber: 26; cvc-complex-type.2.4.c: 通配符的匹配很全面, 但无法找到元素 'util:map' 的声明。

at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:144) at org.springframework.context.support.ClassPathXmlApplicationContext.(ClassPathXmlApplicationContext.java:85) at SpringTest.(SpringTest.java:37) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:423) at org.junit.runners.BlockJUnit4ClassRunner.createTest(BlockJUnit4ClassRunner.java:217) at org.junit.runners.BlockJUnit4ClassRunner$1.runReflectiveCall(BlockJUnit4ClassRunner.java:266) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.BlockJUnit4ClassRunner.methodBlock(BlockJUnit4ClassRunner.java:263) at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68) at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47) at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242) at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
第二个异常：
org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 312 in XML document from class path resource [ApplicationContext.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 312; columnNumber: 77; cvc-complex-type.2.4.c: 通配符的匹配很全面, 但无法找到元素 'context:property-placeholder' 的声明。

原因：导入名称空间不全
解决方法：导入名称空间

xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:util="http://www.springframework.org/schema/util"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-4.2.xsd
                           http://www.springframework.org/schema/util
                           http://www.springframework.org/schema/util/spring-util-4.2.xsd