Question

我正在尝试在SpringPrgramm2中访问Bean.xml，而SpringProgramm1项目中存在Beans.xml。两者都是java项目。

请在下面找到我的代码：

Eclipse中的SpringProramm1 java项目：（只有Beans.xml出现在src文件夹中）

<?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.xsd">


    <bean id="textEditor" class="com.surajhome.practice.spring.TextEditor">
        <property name="spellChecker">  
        <bean id="spellChecker" class="com.surajhome.practice.spring.SpellChecker"/>
        </property>
    </bean>

</beans>

SpringPrgoramm 2 java项目：

MainApp.java
SpellChecker.java
TextEditor.java

下面的MainApp.java代码无法从另一个java项目访问beans.xml。

package com.surajhome.practice.spring;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

    public class MainApp {

        public static void main(String[] args) {

            ApplicationContext appContext=new ClassPathXmlApplicationContext("classpath:SpringProgram1/Beans.xml");     
            TextEditor obj1 = (TextEditor) appContext.getBean("textEditor");
            obj1.spellCheck();

        }
    }

我们如何在SpringProgramm2项目中访问此Beans.xml文件？

例外：

Apr 21, 2018 7:17:24 PM org.springframework.context.support.FileSystemXmlApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.FileSystemXmlApplicationContext@694f9431: startup date [Sat Apr 21 19:17:24 IST 2018]; root of context hierarchy
Apr 21, 2018 7:17:24 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [SpringProgram1/Beans.xml]
Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: IOException parsing XML document from class path resource [SpringProgram1/Beans.xml]; nested exception is java.io.FileNotFoundException: class path resource [SpringProgram1/Beans.xml] cannot be opened because it does not exist
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:343)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:303)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:187)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:223)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:194)
    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:258)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:128)
    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:94)
    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:133)
    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:621)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:522)
    at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:142)
    at org.springframework.context.support.FileSystemXmlApplicationContext.<init>(FileSystemXmlApplicationContext.java:85)
    at com.surajhome.practice.spring.MainApp.main(MainApp.java:11)
Caused by: java.io.FileNotFoundException: class path resource [SpringProgram1/Beans.xml] cannot be opened because it does not exist
    at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:180)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:329)
    ... 13 more

Answer 1

首先，我认为你的项目结构没有凝聚力。 SpringProgramm2项目中的类在SpringProgramm1项目XML中配置是没有意义的，因为这些类属于SpringProgramm2项目。所以，我举了一个例子，说明你的项目如何使用Maven更具凝聚力：

您的新SpringProgramm1项目。
您的新SpringProgramm2项目：

在我的示例中，SpringProgramm2将依赖于SpringProgramm1：

<dependency>
    <groupId>br.edu.claudivan</groupId>
    <artifactId>SpringPrgramm1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
</dependency>

在SpringProgramm1中，您可以保留bean的配置。在SpringProgramm2中，您保持MainApp.java类加载上下文XML，如下所示：

public class MainApp {
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("classpath:/Beans.xml");
        TextEditor obj1 = (TextEditor) context.getBean("textEditor");
        obj1.spellChecker();
    }
}

我将示例代码放在my github上。

希望这有帮助！

如何从另一个项目访问spring配置XML文件？

1 个答案: