public class StringXmlApplicationContext extends AbstractXmlApplicationContext {

private Resource[] configResources;

public StringXmlApplicationContext(String stringXml) {

　　this(new String[] { stringXml }, null);

}

public StringXmlApplicationContext(String[] stringXmls) {

　　this(stringXmls, null);

}

public StringXmlApplicationContext(String[] stringXmls, ApplicationContext parent) {

　　super(parent);

　　this.configResources = new Resource[stringXmls.length];

　　for (int i = 0; i < stringXmls.length; i++) {

　　　　this.configResources[i] = new ByteArrayResource(stringXmls[i].getBytes());

　　}

　　refresh();

}

protected Resource[] getConfigResources() {

　　return this.configResources;

}

public ClassLoader getClassLoader() { 

       return this.getClass().getClassLoader();

    }

}

自定义Spring ApplicationContext 支持动态订阅spring配置