Question

是否可以配置Spring PropertyPlaceholderConfigurer进行读取 properties.xml，通过Apache Commons配置？

Answer 1

的帮助下找到了解决方案

<!-- Composite configuration -->
<bean id="configuration" class="org.springmodules.commons.configuration.CommonsConfigurationFactoryBean">
    <property name="configurations">
        <list>
            <!-- User specifics -->
            <bean class="org.apache.commons.configuration.XMLConfiguration">
                <constructor-arg type="java.net.URL" value="file:cfg.xml" />
            </bean>
        </list>
    </property>
</bean>

<bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="properties" ref="configuration"/>
</bean>

<bean id="testConfig" class="uvst.cfg.TestConfiguration">
    <property name="domain" value="${some.prop}"></property>
</bean>

类TestConfiguration

public class TestConfiguration {
    private String domain;
    public String getDomain() {
        return domain;
    }
    public void setDomain(String domain) {
        this.domain = domain;
    }
}

jUnit Testclass

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration( { "/applicationContextTest.xml" })

public class ApacheCommonCfg2Spring extends AbstractJUnit4SpringContextTests {

    private TestConfiguration tcfg;

    @Test
    public void configuration(){
        tcfg  = this.applicationContext.getBean("testConfig", TestConfiguration.class);
        System.out.println(tcfg.getDomain());
    }

}

Springmodule相当陈旧，似乎不再维护，但它适用于Spring 3.0.3。

随意复制＆amp;粘贴！

Answer 2

最简单的方法（也许不是最好的方法）是继承PropertyPlaceholdeConfigurer，在那里加载公共配置，然后将其传递给超类：

public class TestPlaceholderConfigurer extends PropertyPlaceholderConfigurer
{
    public TestPlaceholderConfigurer()
    {
        super();
    }

    @Override
    protected void processProperties(ConfigurableListableBeanFactory beanFactoryToProcess, Properties props)
            throws BeansException
    {
        XMLConfiguration config = new XMLConfiguration("config.xml");
        Properties commonsProperties = config.getProperties("someKey")
        // Or something else with the configuration
        super.processProperties(beanFactoryToProcess, commonsProperties);
    }
}

然后你只需使用这个类作为placeholderConfig：

<bean id="placeholderConfig"
    class="com.exampl.TestPlaceholderConfigurer ">
    <!-- ... -->
</bean>

Answer 3

这是solution using spring modules。我不知道目前的情况如何，但即使不是，你也可以轻松地获取代码并使其适用于当前版本。

PropertyPlaceholderConfigurer从XML文件读取（Apache Commons配置）

3 个答案: