Spring source code analysis of the location of the contextConfigLocation property

Spring source code analysis of the location of the contextConfigLocation property

<context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
           /WEB-INF/config/application-context.xml
           /WEB-INF/config/cache-context.xml
           /WEB-INF/config/captcha-context.xml
           /WEB-INF/config/jeecms/jeecore-context.xml
           /WEB-INF/config/jeecms/jeecms-context.xml
           /WEB-INF/config/shiro-context.xml
           /WEB-INF/config/plug/**/*-context.xml
           /WEB-INF/config/quartz-task.xml
        </param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

The web.xml in the spring project will have this configuration.

ContextLoaderListener is initialized through ContextLoaderListener.
So where is the attribute contextConfigLocation.
public class ContextLoaderListener extends ContextLoader implements ServletContextListener {

public WebApplicationContext initWebApplicationContext(ServletContext servletContext) {
        if (servletContext.getAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE) != null) {
            throw new IllegalStateException(
                    "Cannot initialize context because there is already a root application context present-"+
                    "check whether you have multiple ContextLoader* definitions in your web.xml!");
        }

        Log logger = LogFactory.getLog(ContextLoader.class);
        servletContext.log("Initializing Spring root WebApplicationContext");
        if (logger.isInfoEnabled()) {
            logger.info("Root WebApplicationContext: initialization started");
        }
        long startTime = System.currentTimeMillis();

        try {
           //Store context in local instance variable, to guarantee that
           //it is available on ServletContext shutdown.
            if (this.context == null) {
                this.context = createWebApplicationContext(servletContext);
protected WebApplicationContext createWebApplicationContext(ServletContext sc) {
        Class<?> contextClass = determineContextClass(sc);
protected Class<?> determineContextClass(ServletContext servletContext) {
        String contextClassName = servletContext.getInitParameter(CONTEXT_CLASS_PARAM);
        if (contextClassName != null) {
            try {
                return ClassUtils.forName(contextClassName, ClassUtils.getDefaultClassLoader());
            }
            catch (ClassNotFoundException ex) {
                throw new ApplicationContextException(
                        "Failed to load custom context class [" + contextClassName + "]", ex);
            }
        }
        else {
            contextClassName = defaultStrategies.getProperty(WebApplicationContext.class.getName());
public abstract class AbstractRefreshableWebApplicationContext extends AbstractRefreshableConfigApplicationContext
        implements ConfigurableWebApplicationContext, ThemeSource {
public abstract class AbstractRefreshableConfigApplicationContext extends AbstractRefreshableApplicationContext
        implements BeanNameAware, InitializingBean {

    private String[] configLocations;

ok,

AbstractRefreshableConfigApplicationContext. . .
Reference: https://cloud.tencent.com/developer/article/1335860 spring source code analysis contextConfigLocation attribute location-Cloud + Community-Tencent Cloud