diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/PolarisProcessor.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/PolarisProcessor.java
index 2b95379c4..3058e5eb8 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/PolarisProcessor.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/annotation/PolarisProcessor.java
@@ -12,7 +12,7 @@ import org.springframework.core.PriorityOrdered;
 import org.springframework.util.ReflectionUtils;
 
 /**
- * Get spring bean properties and methods
+ * Get spring bean properties and methods.
  *
  * @author weihubeats 2022-7-10
  */
@@ -37,12 +37,18 @@ public abstract class PolarisProcessor implements BeanPostProcessor, PriorityOrd
 	}
 
 	/**
-	 * subclass should implement this method to process field
+	 * subclass should implement this method to process field.
+	 * @param bean bean
+	 * @param beanName beanName
+	 * @param field field
 	 */
 	protected abstract void processField(Object bean, String beanName, Field field);
 
 	/**
-	 * subclass should implement this method to process method
+	 * subclass should implement this method to process method.
+	 * @param bean bean
+	 * @param beanName beanName
+	 * @param method method
 	 */
 	protected abstract void processMethod(Object bean, String beanName, Method method);
 
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java
index 9aae5a0c7..0caf41b1d 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/PlaceholderHelper.java
@@ -47,9 +47,10 @@ public class PlaceholderHelper {
 
 	/**
 	 * Resolve placeholder property values, e.g.
-	 * <br />
-	 * <br />
-	 * "${somePropertyValue}" -> "the actual property value"
+	 * @param beanFactory beanFactory
+	 * @param beanName beanName
+	 * @param placeholder placeholder
+	 * @return "${somePropertyValue}" -> "the actual property value"
 	 */
 	public Object resolvePropertyValue(ConfigurableBeanFactory beanFactory, String beanName, String placeholder) {
 		// resolve string value
@@ -74,15 +75,16 @@ public class PlaceholderHelper {
 	}
 
 	/**
+	 *
+	 * @param propertyString propertyString
+	 * @return
 	 * Extract keys from placeholder, e.g.
-	 * <ul>
 	 * <li>${some.key} => "some.key"</li>
 	 * <li>${some.key:${some.other.key:100}} => "some.key", "some.other.key"</li>
 	 * <li>${${some.key}} => "some.key"</li>
 	 * <li>${${some.key:other.key}} => "some.key"</li>
 	 * <li>${${some.key}:${another.key}} => "some.key", "another.key"</li>
 	 * <li>#{new java.text.SimpleDateFormat('${some.key}').parse('${another.key}')} => "some.key", "another.key"</li>
-	 * </ul>
 	 */
 	public Set<String> extractPlaceholderKeys(String propertyString) {
 		Set<String> placeholderKeys = Sets.newHashSet();
diff --git a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinitionProcessor.java b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinitionProcessor.java
index 5dfa95c1c..4b814266a 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinitionProcessor.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/main/java/com/tencent/cloud/polaris/config/spring/property/SpringValueDefinitionProcessor.java
@@ -45,7 +45,7 @@ import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProce
  *    &lt;property name=&quot;batch&quot; value=&quot;${batch:100}&quot;/&gt;
  *  &lt;/bean&gt;
  * </pre>
- * 
+ *
  * <code><a href=https://github.com/apolloconfig/apollo/blob/master/apollo-client/src/main/java/com/ctrip/framework/apollo/spring/property/SpringValueDefinitionProcessor.java>
  *     SpringValueDefinitionProcessor</a></code>
  *
@@ -121,4 +121,4 @@ public class SpringValueDefinitionProcessor implements BeanDefinitionRegistryPos
 			}
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/adapter/PolarisPropertiesSourceAutoRefresherTest.java b/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/adapter/PolarisPropertiesSourceAutoRefresherTest.java
index 36360257a..d64fcf848 100644
--- a/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/adapter/PolarisPropertiesSourceAutoRefresherTest.java
+++ b/spring-cloud-starter-tencent-polaris-config/src/test/java/com/tencent/cloud/polaris/config/adapter/PolarisPropertiesSourceAutoRefresherTest.java
@@ -45,7 +45,6 @@ import org.springframework.context.ConfigurableApplicationContext;
 
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 /**
@@ -73,7 +72,7 @@ public class PolarisPropertiesSourceAutoRefresherTest {
 	private PlaceholderHelper placeholderHelper;
 
 	@Test
-	public void testConfigFileChanged() throws Exception{
+	public void testConfigFileChanged() throws Exception {
 		PolarisPropertySourceAutoRefresher refresher = new PolarisPropertySourceAutoRefresher(polarisConfigProperties,
 				polarisPropertySourceManager, springValueRegistry, placeholderHelper);