diff --git a/.settings/org.eclipse.m2e.core.prefs b/.settings/org.eclipse.m2e.core.prefs
index f5d84e9d5bfeccbc7efdea90e30fb34f468c53b0..f897a7f1cb2389f85fe6381425d29f0a9866fb65 100644
--- a/.settings/org.eclipse.m2e.core.prefs
+++ b/.settings/org.eclipse.m2e.core.prefs
@@ -1,4 +1,4 @@
-activeProfiles=D\:\\JavaIDE\\apache-maven-3.6.3/
+activeProfiles=
 eclipse.preferences.version=1
-resolveWorkspaceProjects=false
+resolveWorkspaceProjects=true
 version=1
diff --git a/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderInsert.java b/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderInsert.java
index 96a7b902c1ba7a51118f978bb3afb57dcc09d9a2..3d167c6020ec82220c345cbf60c37f0df07a4d29 100644
--- a/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderInsert.java
+++ b/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderInsert.java
@@ -33,10 +33,15 @@ public class SqlProviderInsert <T extends JpaBaseDomain>{
 		sql.INSERT_INTO(MapperMetadata.getTableName(entity.getClass()));
 		for (int i = 0; i < listFields.size(); i++) {
 			FieldColumnMapper fieldColumnMapper=listFields.get(i);
-			if(fieldColumnMapper.getFieldType().equalsIgnoreCase("String")
-					&&BeanUtil.getValue(entity, fieldColumnMapper.getFieldName())==null
-					&&fieldColumnMapper.getGeneratedValue()==null) {
+			if(
+				(
+					fieldColumnMapper.getFieldType().equalsIgnoreCase("String")
+					||fieldColumnMapper.getFieldType().startsWith("byte")
+				)
+				&&BeanUtil.getValue(entity, fieldColumnMapper.getFieldName())==null
+				&&fieldColumnMapper.getGeneratedValue()==null) {
 				//skip null field value
+				_logger.trace("skip  field value is null ");
 			}else {
 				//have GeneratedValue and (value is null or eq "")
 				if(fieldColumnMapper.getGeneratedValue()!=null 
diff --git a/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderUpdate.java b/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderUpdate.java
index 21540542be9f1219c2cdf939d54e5a8fb32ea0e6..ce6f72fce0cf9141677b0c14b3d305ac74d3adcb 100644
--- a/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderUpdate.java
+++ b/mybatis-jpa-extra-core/src/main/java/org/apache/mybatis/jpa/persistence/provider/SqlProviderUpdate.java
@@ -34,12 +34,19 @@ public class SqlProviderUpdate <T extends JpaBaseDomain>{
 		for (int i = 0; i < listFields.size(); i++) {
 			FieldColumnMapper fieldColumnMapper=listFields.get(i);
 			
+			_logger.trace("Field " +fieldColumnMapper.getFieldName()+" , Type "+ fieldColumnMapper.getFieldType());
+			
 			if (fieldColumnMapper.isIdColumn()) {
 				continue;
 			}
 			
-			if(fieldColumnMapper.getFieldType().equalsIgnoreCase("String")&&BeanUtil.getValue(entity, fieldColumnMapper.getFieldName())==null) {
+			if(
+				(fieldColumnMapper.getFieldType().equalsIgnoreCase("String")
+						||fieldColumnMapper.getFieldType().startsWith("byte")
+				)
+				&&BeanUtil.getValue(entity, fieldColumnMapper.getFieldName())==null) {
 				//skip null field value
+				_logger.trace("skip  field value is null ");
 			}else {
 				sql.SET(fieldColumnMapper.getColumnName() + "=#{" + fieldColumnMapper.getFieldName() + "}");
 			}
diff --git a/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java b/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java
index bb8d360d4a0793a417ba49afb8314485f0aa7bbe..b961eeb31c05423741e28b7ab08cd4f6b8eae295 100644
--- a/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java
+++ b/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/MyBatisTestRunner.java
@@ -58,7 +58,7 @@ public class MyBatisTestRunner {
 		
 		Thread.sleep(1000);
 		_logger.info("insert id " + student.getId());
-		service.remove(student.getId());
+		//service.remove(student.getId());
 		
 	}
 	
@@ -71,6 +71,23 @@ public class MyBatisTestRunner {
 		 _logger.info("Students "+student);
 	}
 	
+	@Test
+	public void update() throws Exception{
+		_logger.info("get...");
+		Students student=service.get("317d5eda-927c-4871-a916-472a8062df23");
+		System.out.println("Students "+student);
+		 _logger.info("Students "+student);
+		 
+		 _logger.info("update...");
+		 student.setImages(null);
+		 service.update(student);
+		 _logger.info("updateed.");
+		 
+		 student.setImages("ssss".getBytes());
+		 service.update(student);
+		 _logger.info("updateed2.");
+	}
+	
 	
 	@Test
 	public void find() throws Exception{
diff --git a/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/domain/Students.java b/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/domain/Students.java
index 75cca8af816f665103293f72e6226ca10d0fece6..e06bd0a69dc9da502018490161d2157029e610c0 100644
--- a/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/domain/Students.java
+++ b/mybatis-jpa-extra-core/src/test/java/org/apache/mybatis/jpa/test/domain/Students.java
@@ -52,6 +52,9 @@ public class Students extends JpaBaseDomain implements Serializable{
 	@Column
 	private String stdClass;
 	
+	@Column
+	private byte[] images;
+	
 	
 	public Students() {
 		super();
@@ -131,6 +134,16 @@ public class Students extends JpaBaseDomain implements Serializable{
 	}
 
 
+	public byte[] getImages() {
+		return images;
+	}
+
+
+	public void setImages(byte[] images) {
+		this.images = images;
+	}
+
+
 	@Override
 	public String toString() {
 		return "Students [id=" + id + ", stdNo=" + stdNo + ", stdName=" + stdName + ", stdGender=" + stdGender
diff --git a/mybatis-jpa-extra-core/src/test/resources/log4j2.xml b/mybatis-jpa-extra-core/src/test/resources/log4j2.xml
index 22473d1a590d1f66b5ebfce2d0b011d389b22bbd..a45f96e61d61020e6b600e40f97c7aa05630e6b0 100644
--- a/mybatis-jpa-extra-core/src/test/resources/log4j2.xml
+++ b/mybatis-jpa-extra-core/src/test/resources/log4j2.xml
@@ -5,18 +5,16 @@
             <PatternLayout pattern="%d{YYYY-MM-dd HH:mm:ss,SSS} [%t] %-5level %logger{36} - %msg%n" />  
         </Console>
         
-	 </appenders>  
-	 
-    <loggers>  
-        <root level="debug">  
-            <appender-ref ref="consolePrint" /> 
-        </root>  
-         <Logger name="org.springframework" level="INFO">
-         	<appender-ref ref="consolePrint" /> 
-         </Logger>
-    	<Logger name="org.apache.mybatis" level="DEBUG">
-    		<appender-ref ref="consolePrint" /> 
-    	</Logger>
-    
-    </loggers>  
+	 </appenders>
+
+	<loggers>
+
+		<Logger name="org.springframework" level="INFO"></Logger>
+		<Logger name="org.apache.mybatis" level="DEBUG"></Logger>
+		<Logger name="org.apache.mybatis.jpa" level="TRACE"></Logger>
+
+		<root level="INFO">
+			<appender-ref ref="consolePrint" />
+		</root>
+	</loggers>  
 </configuration>
\ No newline at end of file
diff --git a/mybatis-jpa-extra-test/src/test/resources/log4j2.xml b/mybatis-jpa-extra-test/src/test/resources/log4j2.xml
index 22473d1a590d1f66b5ebfce2d0b011d389b22bbd..c38c1b85aea39ebe1bf015d369f7c75038f75bc5 100644
--- a/mybatis-jpa-extra-test/src/test/resources/log4j2.xml
+++ b/mybatis-jpa-extra-test/src/test/resources/log4j2.xml
@@ -11,12 +11,9 @@
         <root level="debug">  
             <appender-ref ref="consolePrint" /> 
         </root>  
-         <Logger name="org.springframework" level="INFO">
-         	<appender-ref ref="consolePrint" /> 
-         </Logger>
-    	<Logger name="org.apache.mybatis" level="DEBUG">
-    		<appender-ref ref="consolePrint" /> 
-    	</Logger>
+        
+        <Logger name="org.springframework" level="INFO"></Logger>
+    	<Logger name="org.apache.mybatis" level="DEBUG"></Logger>
     
     </loggers>  
 </configuration>
\ No newline at end of file
diff --git a/pom.xml b/pom.xml
index 60fa0a0b2bda8853793542ce8de39f937a20c082..33e3fa60a9b6e109f69b0710b597e962da68f341 100644
--- a/pom.xml
+++ b/pom.xml
@@ -35,6 +35,11 @@
 	</properties>
 	
 	<repositories>
+		<repository>
+			<id>mvnrepository</id>
+			<name>mvnrepository</name>
+			<url>http://mvnrepository.com/</url>
+		</repository>
 		<repository>
 			<id>sonatype-nexus-staging</id>
 			<name>Sonatype Nexus Staging</name>
@@ -45,14 +50,6 @@
 			<name>jcenter</name>
 			<url>http://jcenter.bintray.com</url>
 		</repository>
-		<!--
-		<repository>
-			<id>mvnrepository</id>
-			<name>mvnrepository</name>
-			<url>http://mvnrepository.com/</url>
-
-		</repository>
-		-->
 	</repositories>
 	
 	<dependencies>
@@ -140,12 +137,12 @@
 		<dependency>
 			<groupId>org.mybatis</groupId>
 			<artifactId>mybatis</artifactId>
-			<version>3.5.3</version>
+			<version>3.5.6</version>
 		</dependency>
 		<dependency>
 			<groupId>org.mybatis</groupId>
 			<artifactId>mybatis-spring</artifactId>
-			<version>2.0.2</version>
+			<version>2.0.6</version>
 		</dependency>
 		<dependency>
 		  <groupId>com.alibaba</groupId>