bug: Thread safety problem

[shouyuwang]

#225 This solution will lead to thread safety problem.

@Override
protected void doBind(Object bean, String beanName, String dataId, String groupId,
	String configType, NacosConfigurationProperties properties, String content,
	ConfigService configService) {
  synchronized (this) {
	  String name = "nacos-bootstrap-" + beanName;
	  NacosPropertySource propertySource = new NacosPropertySource(dataId, groupId, name, content, configType);
	  environment.getPropertySources().addLast(propertySource);
	  ObjectUtils.cleanMapOrCollectionField(bean);
	  Binder binder = Binder.get(environment);
	  ResolvableType type = getBeanType(bean, beanName);
	  Bindable<?> target = Bindable.of(type).withExistingValue(bean);
	  binder.bind(properties.prefix(), target);
	  publishBoundEvent(bean, beanName, dataId, groupId, properties, content, configService);
	  publishMetadataEvent(bean, beanName, dataId, groupId, properties);
	  environment.getPropertySources().remove(name);
  }
}

ObjectUtils.cleanMapOrCollectionField(bean);will make the type of Map or Collectiion field null,when bean uses the field will throw NPE

[chenhao26-nineteen]

#225 This solution will lead to thread safety problem.

@Override
protected void doBind(Object bean, String beanName, String dataId, String groupId,
	String configType, NacosConfigurationProperties properties, String content,
	ConfigService configService) {
  synchronized (this) {
	  String name = "nacos-bootstrap-" + beanName;
	  NacosPropertySource propertySource = new NacosPropertySource(dataId, groupId, name, content, configType);
	  environment.getPropertySources().addLast(propertySource);
	  ObjectUtils.cleanMapOrCollectionField(bean);
	  Binder binder = Binder.get(environment);
	  ResolvableType type = getBeanType(bean, beanName);
	  Bindable<?> target = Bindable.of(type).withExistingValue(bean);
	  binder.bind(properties.prefix(), target);
	  publishBoundEvent(bean, beanName, dataId, groupId, properties, content, configService);
	  publishMetadataEvent(bean, beanName, dataId, groupId, properties);
	  environment.getPropertySources().remove(name);
  }
}

ObjectUtils.cleanMapOrCollectionField(bean);will make the type of Map or Collectiion field null,when bean uses the field will throw NPE

@ i will solved it@