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<?xml version="1.0" encoding="UTF-8" ?>

 xx-test
 
  encodingFilter
  org.springframework.web.filter.CharacterEncodingFilter
  
   encoding
   UTF-8
  
  
   forceEncoding
   true
  
 
 
  encodingFilter
  /*
 
 
  spring
  org.springframework.web.servlet.DispatcherServlet
  
   contextConfigLocation
   classpath:spring/spring-servlet.xml
  
  1
 
 
  spring
  /
 

 
  SessionFilter
  com.xxx.session.redisSessionFilter
 
 
  SessionFilter
  /*
 
 
  com.xx.session.SSOHttpSessionListener
 
 
  SSOFilter
  com.xxx.auth.SSOFilter
 
 
  SSOFilter
  /*
 
 
  configFileLocation
  abc
 

 // 如: java.net.URLClassLoader.findClass() 拋出的異常
  protected Class<?> findClass(final String name)
    throws ClassNotFoundException
  {
    final Class<?> result;
    try {
      result = AccessController.doPrivileged(
        new PrivilegedExceptionAction>() {
          public Class<?> run() throws ClassNotFoundException {
            String path = name.replace('.', '/').concat(".class");
            Resource res = ucp.getResource(path, false);
            if (res != null) {
              try {
                return defineClass(name, res);
              } catch (IOException e) {
                throw new ClassNotFoundException(name, e);
              }
            } else {
              return null;
            }
          }
        }, acc);
    } catch (java.security.PrivilegedActionException pae) {
      throw (ClassNotFoundException) pae.getException();
    }
    if (result == null) {
      // 此處拋出的異?？梢员?idea 捕獲
      throw new ClassNotFoundException(name);
    }
    return result;
  }

  static {
    // 原罪在這里
    CAS_EDIS_CLIENT_TEMPLATE = CasSpringContextUtils.getBean("casRedisClientTemplate", CasRedisClientTemplate.class);
  }

  public static  T getBean(String name, Class beanType) {
    return getApplicationContext().getBean(name, beanType);
  }

  public static ApplicationContext getApplicationContext() {
    synchronized (CasSpringContextUtils.class) {
      while (applicationContext == null) {
        try {
          // 沒錯(cuò),就是這里了, 這里設(shè)置了死鎖，線程交出，等待1分鐘超時(shí)，繼續(xù)循環(huán)
          CasSpringContextUtils.class.wait(60000);
        } catch (InterruptedException ex) {
        }
      }
      return applicationContext;
    }
  }

  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    synchronized (CasSpringContextUtils.class) {
      CasSpringContextUtils.applicationContext = applicationContext;
      // 夢(mèng)想總是很美好，當(dāng)加載完成后，通知 wait()
      CasSpringContextUtils.class.notifyAll();
    }
  }

 
 
  contextConfigLocation
  classpath:spring/applicationContext.xml
 
 
  org.springframework.web.context.ContextLoaderListener
 

  /**
   * Initialize the root web application context.
   */
  @Override
  public void contextInitialized(ServletContextEvent event) {
    initWebApplicationContext(event.getServletContext());
  }

/**
   * Configure the set of instantiated application event listeners
   * for this Context.
   * @return true if all listeners wre
   * initialized successfully, or false otherwise.
   */
  public boolean listenerStart() {
    if (log.isDebugEnabled())
      log.debug("Configuring application event listeners");
    // Instantiate the required listeners
    String listeners[] = findApplicationListeners();
    Object results[] = new Object[listeners.length];
    boolean ok = true;
    for (int i = 0; i < results.length; i++) {
      if (getLogger().isDebugEnabled())
        getLogger().debug(" Configuring event listener class '" +
          listeners[i] + "'");
      try {
        String listener = listeners[i];
        results[i] = getInstanceManager().newInstance(listener);
      } catch (Throwable t) {
        t = ExceptionUtils.unwrapInvocationTargetException(t);
        ExceptionUtils.handleThrowable(t);
        getLogger().error(sm.getString(
            "standardContext.applicationListener", listeners[i]), t);
        ok = false;
      }
    }
    if (!ok) {
      getLogger().error(sm.getString("standardContext.applicationSkipped"));
      return false;
    }
    // Sort listeners in two arrays
    ArrayList