1.新增构造方法可以通过dataSource获取连接

2.通过抽象配置文件接口获取jdbc参数，为以后扩展方便

panda-jdbc/src/main/java/org/panda/jdbc/JdbcUtils.java

@@ -2,10 +2,12 @@ package org.panda.jdbc;
 
 import org.panda.code.uitl.PropsUtil;
 import org.panda.code.uitl.StringUtil;
+import org.panda.jdbc.helper.DbConfigInterface;
 import org.panda.jdbc.mode.Column;
 import org.panda.jdbc.mode.DbInfo;
 import org.panda.jdbc.mode.Table;
 
+import javax.sql.DataSource;
 import java.sql.*;
 import java.util.List;
 import java.util.Properties;
@@ -28,18 +30,33 @@ public class JdbcUtils {
 
     private String password = null;
 
+    private DataSource dataSource;
+
     public JdbcUtils(String driver, String url, String username, String password) {
         this.driver = driver;
         this.url = url;
         this.username = username;
         this.password = password;
+        loadDriver();
+    }
+
+    public JdbcUtils(DbConfigInterface dbConfigInterface){
+        this.driver = dbConfigInterface.getJdbcDriver();
+        this.url = dbConfigInterface.getJdbcUrl();
+        this.username =dbConfigInterface.getJdbcUser();
+        this.password =dbConfigInterface.getJdbcPassword();
+        loadDriver();
+    }
+
+    private void loadDriver(){
         try {
-            Class.forName(driver);
+            Class.forName(this.driver);
         } catch (ClassNotFoundException e) {
             e.printStackTrace();
         }
     }
 
+    @Deprecated
     public JdbcUtils(Properties prop) {
         this.driver = PropsUtil.getString(prop, "jdbc.driver");
         this.url = PropsUtil.getString(prop, "jdbc.url");
@@ -52,6 +69,10 @@ public class JdbcUtils {
         }
     }
 
+    public JdbcUtils(DataSource dataSource){
+        this.dataSource = dataSource;
+    }
+
     /**
      * 连接数据库
      *
@@ -59,17 +80,25 @@ public class JdbcUtils {
      * @throws SQLException
      */
     public Connection getConnection() {
-        Connection conn = CONNECTION_HOLDER.get();
+        Connection conn = null;
-        if (conn == null) {
+        if (dataSource!=null){
             try {
-                conn = DriverManager.getConnection(url, username, password);
+                conn = dataSource.getConnection();
             } catch (SQLException e) {
                 e.printStackTrace();
-            } finally {
+            }
-                CONNECTION_HOLDER.set(conn);
+        }else {
+            conn =  CONNECTION_HOLDER.get();
+            if (conn == null) {
+                try {
+                    conn = DriverManager.getConnection(url, username, password);
+                } catch (SQLException e) {
+                    e.printStackTrace();
+                } finally {
+                    CONNECTION_HOLDER.set(conn);
+                }
             }
         }
-
         return conn;
     }
 
@@ -140,7 +169,6 @@ public class JdbcUtils {
      * @param params
      */
     public void update(String sql, Object[] params) {
-        System.out.println(sql);
         Connection conn = null;
         PreparedStatement st = null;
         ResultSet rs = null;