Java内容重新整理删除过期的东西

Java/JavaDemo/codedemo/jdbc/JDBCUtils.java

@@ -0,0 +1,64 @@
+package cn.aofeng.demo.jdbc;
+
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * JDBC常用方法集。
+ * 
+ * @author <a href="mailto:aofengblog@163.com">聂勇</a>
+ */
+public class JDBCUtils {
+
+    private static Logger _logger = LoggerFactory.getLogger(JDBCUtils.class);
+    
+    public static void close(ResultSet rs) {
+        if (null != rs) {
+            try {
+                rs.close();
+            } catch (SQLException e) {
+                _logger.error("close resultset occurs error", e);
+            }
+        }
+    }
+    
+    public static void close(Statement stmt) {
+        if (null != stmt) {
+            try {
+                stmt.close();
+            } catch (SQLException e) {
+                _logger.error("close statement occurs error", e);
+            }
+        }
+    }
+    
+    public static void close(Connection conn) {
+        if (null != conn) {
+            try {
+                conn.close();
+            } catch (SQLException e) {
+                _logger.error("close connection occurs error", e);
+            }
+        }
+    }
+
+    public static void showResultSetInfo(ResultSet rs) throws SQLException {
+        ResultSetMetaData rsMeta = rs.getMetaData();
+        int colCount = rsMeta.getColumnCount();
+        _logger.info("total columns:{}", colCount);
+        for (int i = 1; i <= colCount; i++) {
+            _logger.info("column name:{}, label:{}, type:{}, typeName:{}",
+                    rsMeta.getColumnName(i), 
+                    rsMeta.getColumnLabel(i),
+                    rsMeta.getColumnType(i),
+                    rsMeta.getColumnTypeName(i));
+        }
+    }
+
+}