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138 lines
3.6 KiB
138 lines
3.6 KiB
package utils;
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import com.alibaba.druid.pool.DruidDataSourceFactory;
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import javax.sql.DataSource;
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import java.sql.Connection;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import java.util.Properties;
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/**
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* Druid连接池工具类,将来dao层调用-
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*/
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public class JDBCUtils {
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private static DataSource dataSource; //定义成员变量DataSource
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static {
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try {
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//加载配置文件
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Properties properties = new Properties();
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properties.load(JDBCUtils.class.getClassLoader().getResourceAsStream("druid.properties"));
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//获取DataSource
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dataSource = DruidDataSourceFactory.createDataSource(properties);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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/**
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* 获取连接-
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*/
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public static Connection getConnection() throws SQLException {
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return dataSource.getConnection();
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}
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/**
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* 释放资源-
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*/
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public static void close(Statement statement,Connection connection) {
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close(null,statement,connection);
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}
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public static void close(ResultSet resultSet, Statement statement, Connection connection) {
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if (resultSet != null) {
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try {
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resultSet.close();
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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if (statement != null) {
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try {
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statement.close();
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} catch (SQLException e) {
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e.printStackTrace();
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}
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}
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if (connection != null) {
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try {
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connection.close();//归还连接
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}catch (SQLException e) {
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e.printStackTrace();
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}
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}
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}
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/**
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* 获取连接池方法-
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*/
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public static DataSource getDataSource() {
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return dataSource;
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}
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}
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//public class JDBCUtils {
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// private static DataSource dataSource; //定义成员变量DataSource
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// static {
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// try {
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// //加载配置文件
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// Properties properties = new Properties();
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// properties.load(JDBCUtils.class.getClassLoader().getResourceAsStream("druid.properties"));
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//
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// //获取DataSource
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// dataSource = DruidDataSourceFactory.createDataSource(properties);
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// } catch (Exception e) {
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// e.printStackTrace();
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// }
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// }
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//
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// /**
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// * 获取连接-
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// */
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// public static Connection getConnection() throws SQLException {
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// return dataSource.getConnection();
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// }
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//
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// /**
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// * 释放资源-
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// */
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// public static void close(Statement statement,Connection connection) {
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// close(null,statement,connection);
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// }
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//
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// public static void close(ResultSet resultSet, Statement statement, Connection connection) {
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// if (resultSet != null) {
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// try {
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// resultSet.close();
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// } catch (SQLException e) {
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// e.printStackTrace();
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// }
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// }
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//
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// if (statement != null) {
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// try {
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// statement.close();
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// } catch (SQLException e) {
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// e.printStackTrace();
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// }
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// }
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//
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// if (connection != null) {
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// try {
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// connection.close();//归还连接
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// }catch (SQLException e) {
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// e.printStackTrace();
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// }
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// }
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// }
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//
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// /**
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// * 获取连接池方法-
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// */
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// public static DataSource getDataSource() {
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// return dataSource;
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// }
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//}
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