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DBUtil.java
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84 lines (77 loc) · 2.12 KB
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package com.mashibing.util;
import java.sql.*;
public class DBUtil {
public static final String URL = "jdbc:oracle:thin:@localhost:1521:orcl";
public static final String USERNAME = "scott";
public static final String PASSWORD = "tiger";
static {
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
/**
* 获取数据库连接
* @return 返回连接对象
*/
public static Connection getConnection(){
try {
return DriverManager.getConnection(URL,USERNAME,PASSWORD);
} catch (SQLException e) {
e.printStackTrace();
}
return null;
}
/*
* 关闭数据库连接
* */
public static void closeConnection(Connection connection){
if(connection!=null){
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void closeConnection(Connection connection, Statement statement){
if (statement!=null){
try {
statement.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(connection!=null){
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
public static void closeConnection(Connection connection, Statement statement, ResultSet resultSet){
if (resultSet!=null){
try {
resultSet.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if (statement!=null){
try {
statement.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
if(connection!=null){
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
}