Java 使用MethodInvokingFactoryBean for XMLConfiguration在Springbean中加载文件

我有一个xmlConfiguration bean来加载SystemProperty.xml文件，如下所示

<bean
    id="xmlConfiguration"
    class="org.apache.commons.configuration.XMLConfiguration"
    lazy-init="true">
    <constructor-arg type="java.lang.String">
        <value>SystemProperty.xml</value>
    </constructor-arg>
    <property name="expressionEngine">
        <bean class="org.apache.commons.configuration.tree.xpath.XPathExpressionEngine" />
    </property>
</bean>

但是，这样做不好。由于在加载文件之前必须调用

setDelimiterParsingDisabled（）

。因此，在调用

setDelimiterParsingDisabled（）

我使用了

MethodInvokingFactoryBean

来实现这种方式，但得到了如下异常

org.apache.commons.configuration.ConfigurationException: No file name has been set!
at org.apache.commons.configuration.AbstractFileConfiguration.save(AbstractFileConfiguration.java:409)
at org.apache.commons.configuration.AbstractHierarchicalFileConfiguration.save(AbstractHierarchicalFileConfiguration.java:214)
at devicemanage.system.SystemConfigurationServiceImpl.saveSystemProperty(SystemConfigurationServiceImpl.java:232)
at datacollection.service.DataCollectionServiceImpl.syncWithDataCollection(DataCollectionServiceImpl.java:786)
at devicemanage.utility.SyncWithDCListener$1.run(SyncWithDCListener.java:51)

似乎该文件没有设置为XMLConfiguration，我的

MethodInvokingFactoryBean

描述如下

<bean id="xmlConfigurationMethodInvokingBean"  
     class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">  
     <property name="targetObject" ref="xmlConfiguration" />  
     <property name="targetMethod" value="load" />
     <property name="arguments" value="SystemProperty.xml" />  
 </bean>

不确定的是我使用

MethodInvokingFactoryBean

的方法是否错误，或者我在将文件名字符串传递到

load（）

---

感谢您的帮助。

第一条路

我建议您创建自己的继承类并声明

init方法

：

package beans;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.XMLConfiguration;

public class CustomXMLConfiguration extends XMLConfiguration {

    private String loadFileName;

    private void init() throws ConfigurationException {
        this.load(fileName);
    }

    public String getLoadFileName() {
        return loadFileName;
    }

    public void setLoadFileName(String fileName) {
        this.loadFileName = fileName;
    }
}

在配置中，您可以通过以下方式使用此类：

<bean id="xmlConfiguration" class="beans.CustomXMLConfiguration" lazy-init="true"
                            init-method="init">
    <property name="expressionEngine">
        <bean class="org.apache.commons.configuration.tree.xpath.XPathExpressionEngine" />
    </property>
    <property name="delimiterParsingDisabled">
        <value type="java.lang.Boolean">true</value>
    </property>
    <property name="loadFileName" value="SystemProperty.xml"/>
</bean>

就我个人而言，我更喜欢第一个变体，因为它的定制更加灵活，并且没有多余的bean实例。但你可以选择任何人

希望这会有帮助

package beans;

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.XMLConfiguration;

public class CustomXMLConfiguration extends XMLConfiguration {

    private String loadFileName;

    private void init() throws ConfigurationException {
        this.load(fileName);
    }

    public String getLoadFileName() {
        return loadFileName;
    }

    public void setLoadFileName(String fileName) {
        this.loadFileName = fileName;
    }
}

<bean id="xmlConfiguration" class="beans.CustomXMLConfiguration" lazy-init="true"
                            init-method="init">
    <property name="expressionEngine">
        <bean class="org.apache.commons.configuration.tree.xpath.XPathExpressionEngine" />
    </property>
    <property name="delimiterParsingDisabled">
        <value type="java.lang.Boolean">true</value>
    </property>
    <property name="loadFileName" value="SystemProperty.xml"/>
</bean>

<bean class="org.springframework.beans.factory.config.MethodInvokingBean">
    <property name="targetObject" ref="xmlConfiguration"/>
    <property name="targetMethod" value="load"/>
    <property name="arguments" value="SystemProperty.xml"/>
</bean>