ContextLoader.java 文件源码

@SuppressWarnings("unchecked")
private Class<ApplicationContextInitializer<ConfigurableApplicationContext>> loadInitializerClass(String className) {
    try {
        Class<?> clazz = ClassUtils.forName(className, ClassUtils.getDefaultClassLoader());
        Assert.isAssignable(ApplicationContextInitializer.class, clazz);
        return (Class<ApplicationContextInitializer<ConfigurableApplicationContext>>) clazz;
    }
    catch (ClassNotFoundException ex) {
        throw new ApplicationContextException("Failed to load context initializer class [" + className + "]", ex);
    }
}