spring入门提问

问题描述

运行spring程序需要哪些包的? 谢谢！第一天学习spring，按照《Spring开发指南》中的第一个例子。-- Action.javapackage net.xiaxin.spring.qs;public interface Action {public String execute(String str);}-- UpperAction.javapackage net.xiaxin.spring.qs;public class UpperAction implements Action {private String message;public String getMessage() {return message;}public void setMessage(String string) {message = string;}public String execute(String str) {return (getMessage() + str).toUpperCase();}}-- LowerAction.javapackage net.xiaxin.spring.qs;public class LowerAction implements Action {private String message;public String getMessage() {return message;}public void setMessage(String string) {message = string;}public String execute(String str) {return (getMessage()+str).toLowerCase();}}-- bean.xml<beans><description>Spring Quick Start</description><bean id="TheAction" class="net.xiaxin.spring.qs.UpperAction"><property name="message"><value>HeLLo</value></property></bean></beans>-- SimpleTest.javapackage test;import net.xiaxin.spring.qs.Action;import org.springframework.context.ApplicationContext;import org.springframework.context.support.FileSystemXmlApplicationContext;public class SimpleTest {public static void main(String[] args) {ApplicationContext ctx = new FileSystemXmlApplicationContext("bean.xml");Action action = (Action) ctx.getBean("TheAction");System.out.println(action.execute("Rod Johnson"));}}报如下错误2008-8-12 10:25:52 org.springframework.context.support.AbstractApplicationContext prepareRefresh信息: Refreshing org.springframework.context.support.FileSystemXmlApplicationContext@1bf52a5: display name [org.springframework.context.support.FileSystemXmlApplicationContext@1bf52a5]; startup date [Tue Aug 12 10:25:51 CST 2008]; root of context hierarchy2008-8-12 10:25:52 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions信息: Loading XML bean definitions from file [D:projectSpringTestbean.xml]Exception in thread "main" org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 1 in XML document from file [D:projectSpringTestbean.xml] is invalid; nested exception is org.xml.sax.SAXParseException: 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:423)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:353)at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:140)at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:84)at test.SimpleTest.main(SimpleTest.java:11)Caused by: org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of element 'beans'.at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(Unknown Source)at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)at org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:75)at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:396)... 14 more

解决方案

不知道你使用的是哪个版本, 在bean的配置文件中加上namespace, spring要做检查的, 给个spring2.5的例子<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd"><bean id="TheAction" class="net.xiaxin.spring.qs.UpperAction"><property name="message"><value>HeLLo</value></property></bean> </beans>
解决方案二：
http://forum.springframework.org/showthread.php?t=37877在bean.xml中加入如下代码:<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"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-2.0.xsd">另外,查看一下有没有重复引用的jar包.
解决方案三：
<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"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-2.0.xsd"><bean name="" .........></bean></beans>bean.xml上面要加上这些注释
解决方案四：
ApplicationContext ctx = new FileSystemXmlApplicationContext("bean.xml"); 这句话说找不到bean.xml 换成ApplicationContext ctx = new ClassPathXmlApplicationContext("classpath*:bean.xml"); 应该就可以了