diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/JdbcUtils.java b/panda-jdbc/src/main/java/org/panda/jdbc/JdbcUtils.java
index d844ebe..90d61b2 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/JdbcUtils.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/JdbcUtils.java
@@ -190,19 +190,18 @@ public class JdbcUtils {
         } catch (SQLException e) {
             e.printStackTrace();
         } finally {
-            release( st, rs);
+            release(conn, st, rs);
         }
         return rs;
     }
 
     /**
-     * 关闭数据库连接(废弃)
-     * 废弃原因：采用数据库连接池，不用关闭连接
+     * 关闭数据库连接
      * @param conn
      * @param st
      * @param rs
      */
-    @Deprecated
+
     public void release(Connection conn, Statement st, ResultSet rs) {
         if (rs != null) {
             try {
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/TableUtil.java b/panda-jdbc/src/main/java/org/panda/jdbc/TableUtil.java
new file mode 100644
index 0000000..2497d99
--- /dev/null
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/TableUtil.java
@@ -0,0 +1,61 @@
+package org.panda.jdbc;
+
+import org.panda.beans.util.BeanUtil;
+import org.panda.jdbc.mode.Column;
+import org.panda.jdbc.mode.Table;
+import org.panda.jdbc.sql.BeanSqlUtil;
+
+import java.lang.reflect.Field;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @Author: qi
+ * @Description:
+ * @Date: Create in 8:44 AM 2019/11/2
+ */
+public class TableUtil {
+
+    /**
+     *  class 对象转换成 tablle对象
+     * @param clazz
+     * @return
+     */
+    public Table beanToTable(Class clazz){
+        Table table = new Table();
+        String tableName = BeanSqlUtil.beanNameToTableName(clazz);
+        table.setTableName(tableName);
+        List<Field> fields = BeanUtil.getAllField(clazz);
+        List<Column> columnList = new ArrayList<>();
+        fields.forEach(field -> {
+            Column column = fieldToColumn(field);
+            columnList.add(column);
+        });
+
+        table.setColumns(columnList);
+
+        return table;
+    }
+
+    /**
+     * 对象属性转换成 表列
+     * @param field
+     * @return
+     */
+    public Column fieldToColumn(Field field){
+        Column column = new Column();
+        if (field.isAnnotationPresent(org.panda.jdbc.annotation.Column.class)){
+            org.panda.jdbc.annotation.Column annotationColumn = field.getAnnotation(org.panda.jdbc.annotation.Column.class);
+
+            int length = annotationColumn.length();
+            String defalutValue = annotationColumn.defaultValue();
+            boolean isNull = annotationColumn.isNull();
+            column.setColumnSize(length);
+            column.setColumnDef(defalutValue);
+            column.setColumnName(BeanSqlUtil.caseToHump(field.getName()));
+            column.setNull(isNull);
+        }
+
+        return column;
+    }
+}
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/helper/DataBaseHelper.java b/panda-jdbc/src/main/java/org/panda/jdbc/helper/DataBaseHelper.java
index 52f5e2f..cbdd878 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/helper/DataBaseHelper.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/helper/DataBaseHelper.java
@@ -6,7 +6,7 @@ import org.apache.commons.dbutils.handlers.BeanHandler;
 import org.apache.commons.dbutils.handlers.BeanListHandler;
 import org.apache.commons.dbutils.handlers.MapListHandler;
 import org.panda.beans.util.BeanUtil;
-import org.panda.jdbc.sql.AbstractDbBuiler;
+import org.panda.jdbc.sql.builder.AbstractDbBuiler;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -40,11 +40,14 @@ public class DataBaseHelper {
     private static final String JDBC_PASSWORD;
 
     static {
-        JDBC_DRIVER = DbConfigHelper.getJdbcDriver();
-        JDBC_URL = DbConfigHelper.getJdbcUrl();
-        JDBC_USER = DbConfigHelper.getJdbcUser();
-        JDBC_PASSWORD = DbConfigHelper.getJdbcPassword();
-
+//        JDBC_DRIVER = DbConfigHelper.getJdbcDriver();
+//        JDBC_URL = DbConfigHelper.getJdbcUrl();
+//        JDBC_USER = DbConfigHelper.getJdbcUser();
+//        JDBC_PASSWORD = DbConfigHelper.getJdbcPassword();
+        JDBC_DRIVER = null;
+        JDBC_URL = null;
+        JDBC_USER = null;
+        JDBC_PASSWORD = null;
         DATA_SOURCE = new BasicDataSource();
         DATA_SOURCE.setDriverClassName(JDBC_DRIVER);
         DATA_SOURCE.setUrl(JDBC_URL);
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/helper/DbConfigHelper.java b/panda-jdbc/src/main/java/org/panda/jdbc/helper/DbConfigHelper.java
index a559423..900d06e 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/helper/DbConfigHelper.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/helper/DbConfigHelper.java
@@ -9,14 +9,15 @@ import java.util.Properties;
  * @author qi
  * 属性文件助手类
  */
-public class DbConfigHelper {
+public class DbConfigHelper implements DbConfigInterface {
 
     private static final Properties CONFIG_PROPS = PropsUtil.loadProps(DbConfigConstant.CONFIG_FILE);
 
     /**
      * 获取数据库驱动
      */
-    public static String getJdbcDriver() {
+    @Override
+    public  String getJdbcDriver() {
 
         return PropsUtil.getString(CONFIG_PROPS, DbConfigConstant.JDBC_DRIVER);
     }
@@ -26,7 +27,8 @@ public class DbConfigHelper {
      *
      * @return
      */
-    public static String getJdbcUrl() {
+    @Override
+    public  String getJdbcUrl() {
 
         return PropsUtil.getString(CONFIG_PROPS, DbConfigConstant.JDBC_URL);
     }
@@ -36,7 +38,8 @@ public class DbConfigHelper {
      *
      * @return
      */
-    public static String getJdbcUser() {
+    @Override
+    public  String getJdbcUser() {
 
         return PropsUtil.getString(CONFIG_PROPS, DbConfigConstant.JDBC_USER);
     }
@@ -44,7 +47,8 @@ public class DbConfigHelper {
     /**
      * 获取数据库密码
      */
-    public static String getJdbcPassword() {
+    @Override
+    public  String getJdbcPassword() {
 
         return CONFIG_PROPS.getProperty(DbConfigConstant.JDBC_PASSWORD);
     }
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/mode/Column.java b/panda-jdbc/src/main/java/org/panda/jdbc/mode/Column.java
index cfa2eb1..bb88f54 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/mode/Column.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/mode/Column.java
@@ -50,6 +50,10 @@ public class Column {
      * 备注
      */
     private String remarks;
+    /**
+     * 是否允许为null defaultValue:true
+     */
+    private Boolean isNull;
 
     public String getColumnName() {
         return columnName;
@@ -83,13 +87,11 @@ public class Column {
         this.remarks = remarks;
     }
 
-    @Override
-    public String toString() {
-        return "Column{" +
-                "columnName='" + columnName + '\'' +
-                ", columnSize=" + columnSize +
-                ", columnDef='" + columnDef + '\'' +
-                ", remarks='" + remarks + '\'' +
-                '}';
+    public Boolean getNull() {
+        return isNull;
+    }
+
+    public void setNull(Boolean aNull) {
+        isNull = aNull;
     }
 }
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/sql/BeanSqlUtil.java b/panda-jdbc/src/main/java/org/panda/jdbc/sql/BeanSqlUtil.java
index 56cd810..b1044e7 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/sql/BeanSqlUtil.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/sql/BeanSqlUtil.java
@@ -15,6 +15,9 @@ import java.util.Map;
  */
 public class BeanSqlUtil {
 
+    /**
+     * 驼峰下滑线
+     */
     public static final String SQL_CHARACTER = "_";
 
     /**
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/sql/builder/MysqlBuilder.java b/panda-jdbc/src/main/java/org/panda/jdbc/sql/builder/MysqlBuilder.java
index 3b5a391..0fdbe96 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/sql/builder/MysqlBuilder.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/sql/builder/MysqlBuilder.java
@@ -84,6 +84,7 @@ public class MysqlBuilder extends AbstractDbBuiler {
                 }
             });
         }
+        //创建表
         map.forEach((key,value)->{
             sql.append(createTableStr(value));
         });
diff --git a/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/impl/DefaultDbBuilerFactory.java b/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/impl/DefaultDbBuilerFactory.java
index 0d6f507..c276755 100644
--- a/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/impl/DefaultDbBuilerFactory.java
+++ b/panda-jdbc/src/main/java/org/panda/jdbc/sql/factory/impl/DefaultDbBuilerFactory.java
@@ -17,8 +17,7 @@ public class DefaultDbBuilerFactory implements DbBuilerFactory {
     public AbstractDbBuiler getSqlBuilder(String dbType) {
         AbstractDbBuiler abstractDbBuiler = null;
         switch (dbType){
-            case SqlConstant
-                    .DB_TYPE_MYSQL:
+            case SqlConstant.DB_TYPE_MYSQL:
                 abstractDbBuiler = new MysqlBuilder();
             break;
             case SqlConstant.DB_TYPE_ORACLE:
diff --git a/panda-jdbc/src/test/java/org/panda/entity/SysUser.java b/panda-jdbc/src/test/java/org/panda/entity/SysUser.java
index 082172a..5cc6205 100644
--- a/panda-jdbc/src/test/java/org/panda/entity/SysUser.java
+++ b/panda-jdbc/src/test/java/org/panda/entity/SysUser.java
@@ -1,5 +1,6 @@
 package org.panda.entity;
 
+import org.panda.jdbc.annotation.Column;
 import org.panda.jdbc.annotation.Table;
 
 import java.util.Date;
@@ -9,6 +10,7 @@ public class SysUser {
 
     private Long id;
 
+    @Column(defaultValue = "qi",length = 120,isNull = false)
     private String name;
 
     private Date createTime;
diff --git a/panda-jdbc/src/test/java/org/panda/jdbc/JdbcUtilsTest.java b/panda-jdbc/src/test/java/org/panda/jdbc/JdbcUtilsTest.java
index 7ee9a18..f6a1361 100644
--- a/panda-jdbc/src/test/java/org/panda/jdbc/JdbcUtilsTest.java
+++ b/panda-jdbc/src/test/java/org/panda/jdbc/JdbcUtilsTest.java
@@ -2,13 +2,13 @@ package org.panda.jdbc;
 
 import org.junit.Test;
 import org.panda.entity.SysUser;
-import org.panda.jdbc.annotation.Table;
-import org.panda.jdbc.sql.AbstractDbBuiler;
+import org.panda.jdbc.annotation.Column;
+import org.panda.jdbc.sql.builder.AbstractDbBuiler;
 import org.panda.jdbc.sql.SqlConstant;
 import org.panda.jdbc.sql.factory.DbBuilerFactory;
 import org.panda.jdbc.sql.factory.impl.DefaultDbBuilerFactory;
 
-import static org.junit.Assert.*;
+import java.lang.reflect.Field;
 
 public class JdbcUtilsTest {
 
@@ -38,6 +38,14 @@ public class JdbcUtilsTest {
 
         Class clzz = SysUser.class;
 
+        Field[] fields = clzz.getDeclaredFields();
+        for (Field field1:fields){
+            if (field1.isAnnotationPresent(Column.class)){
+                Column column = field1.getAnnotation(Column.class);
+                System.out.println(column);
+            }
+          //  System.out.println(column.length());
+        }
 
         DbBuilerFactory dbBuilerFactory = new DefaultDbBuilerFactory();
         AbstractDbBuiler abstractDbBuiler = dbBuilerFactory.getSqlBuilder(SqlConstant.DB_TYPE_MYSQL);