仿照ibatis的风格实现Log，以及添加ConnectionChecker

git-svn-id: http://code.alibabatech.com/svn/druid/trunk@299 b9813039-fb51-4c41-a8b9-e21c2acb5095

src/test/java/com/alibaba/druid/pool/MySqlValdConnectionTest.java

@@ -0,0 +1,30 @@
+package com.alibaba.druid.pool;
+
+import java.sql.Connection;
+
+import junit.framework.TestCase;
+
+public class MySqlValdConnectionTest extends TestCase {
+    private String jdbcUrl;
+    private String user;
+    private String password;
+    private String driverClass;
+    
+    public void setUp () throws Exception {
+        jdbcUrl = "jdbc:mysql://10.20.129.146/dragoon_v25masterdb?useUnicode=true&characterEncoding=UTF-8";
+        user = "dragoon25";
+        password = "dragoon25";
+        driverClass = "com.mysql.jdbc.Driver";
+    }
+    public void test_0 () throws Exception {
+        DruidDataSource dataSource = new DruidDataSource();
+        dataSource.setDriverClassName(driverClass);
+        dataSource.setUrl(jdbcUrl);
+        dataSource.setUsername(user);
+        dataSource.setPassword(password);
+        dataSource.setFilters("stat");
+        
+        Connection conn = dataSource.getConnection();
+        conn.close();
+    }
+}