使用Spring命名空间配置时出错

时间：2017-09-17 18:06:25

标签： java spring

我是一个Spring新手，试图将属性文件中的数据注入到bean中。我使用的是Spring 2.5.6版。我的xml文件如下

<?xml version = "1.0" encoding = "UTF-8"?>

 <beans xmlns = "http://www.springframework.org/schema/beans" 
          xmlns:util = "http://www.springframework.org/schema/util" 
          xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" 
          xmlns:schemaLocation = "http://www.springframework.org/schema/beans 
          http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
          http://www.springframework.org/schema/util 
          http://www.springframework.org/schema/util/spring-util-3.0.xsd">

   <bean id = "t" class = "com.spring.readingpropertiesfile.Drivers">
      <property name = "test">
      <util.properties location = "classpath:com/spring/readingpropertiesfile/Default.properties">
      </util.properties>
      </property>
   </bean>

 </beans>

我正在尝试从com.spring.readingproperties文件包中的文件Default.properties中读取

当我跑步时，我收到以下错误。

Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 9 in XML document from class path resource [com/spring/readingpropertiesfile/beans.xml] is invalid; nested exception is org.xml.sax.SAXParseException; lineNumber: 9; columnNumber: 73; cvc-elt.1: Cannot find the declaration of element 'beans'.
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:404)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:342)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:310)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:143)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:178)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:149)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:212)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:113)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:80)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:123)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:422)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:352)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)
    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)
    at com.spring.readingpropertiesfile.Client.main(Client.java:8)
Caused by: org.xml.sax.SAXParseException; lineNumber: 9; columnNumber: 73; cvc-elt.1: Cannot find the declaration of element 'beans'.
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
    at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
    at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1900)
    at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:740)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:613)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
    at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
    at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
    at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
    at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)
    ... 14 more

感谢任何帮助。

1 个答案:

答案 0 :(得分：1)

尝试从xsi:schemaLocation，

更改为xmlns:schemaLocation 
<beans xmlns = "http://www.springframework.org/schema/beans" 
      xmlns:util = "http://www.springframework.org/schema/util" 
      xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance" 
      xsi:schemaLocation = "http://www.springframework.org/schema/beans 
      http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
      http://www.springframework.org/schema/util 
      http://www.springframework.org/schema/util/spring-util-3.0.xsd">

具体例子

这是一个具体的例子，

MyDriver - 具有属性

的类 
package abc.service;

public class MyDriver {

    private String username;

    private String password;

    public void setUsername(String username) {
        this.username = username;
    }

    public String getUsername() {
        return this.username;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getPassword() {
        return this.password;
    }
}

beans.xml - yu声明bean的文件

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/util 
        http://www.springframework.org/schema/util/spring-util-3.0.xsd">

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="locations">
            <list>
                <value>classpath:example/my.properties</value>
            </list>
        </property>
    </bean>

    <bean id="myDriver"
          class="abc.service.MyDriver">

        <property name="username" value="${my.username}" />
        <property name="password" value="${my.password}" />
    </bean>
</beans>

my.properties - 包含属性

的文件

属性文件位于resources/example文件夹

下 
my.username=hello
my.password=there

项目布局

example-project
|_ src
  |_ main
    |_ java
      |_ service
        |_ abc
          |_ MyDriver.java
  |_ resources
    |_ example
      |_ my.properties
  |_ webapp
    |_ WEB-INF
      |_ beans.xml
      |_ web.xml
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