数据库实现批量删除数据的操作方法（代码实例）

package com.mescs.baseinfo.utils;  import java.sql.Connection; import java.sql.DatabaseMetaData; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; import java.util.ArrayList; import java.util.List;  import org.slf4j.Logger; import org.slf4j.LoggerFactory;/**  *   * 类名：DatabaseUtil  <br />  *  * 功能：数据库操作  *  */  public class DatabaseUtil {         private final static Logger LOGGER = LoggerFactory.getLogger(DatabaseUtil.class);         private static final String DRIVER = "org.firebirdsql.jdbc.FBDriver";         private static final String URL = "jdbc:firebirdsql:embedded:mescs.fdb?lc_ctype=UTF8";         private static final String USERNAME = "root";         private static final String PASSWORD = "root";         private static final String SQL = "DELETE FROM ";// 数据库数据库表内容清空          static {        try {             Class.forName(DRIVER);         } catch (ClassNotFoundException e) {             LOGGER.error("数据库驱动加载失败===>>>", e);         }     }    /**      * 获取数据库连接      *      * @return     */     public static Connection getConnection() {         Connection conn = null;                 try {             conn = DriverManager.getConnection(URL, USERNAME, PASSWORD);         } catch (SQLException e) {             LOGGER.error("数据库连接失败===>>>", e);         }        return conn;     }    /**      * 关闭数据库连接      * @param conn     */     public static void closeConnection(Connection conn) {                if(conn != null) {                         try {                 conn.close();             } catch (SQLException e) {                 LOGGER.error("数据库关闭失败===>>>", e);             }         }     }    /**      * 获取数据库下的所有表名     */     public static List<String> getTableNames() {         List<String> tableNames = new ArrayList<String>();         Connection conn = getConnection();         ResultSet rs = null;                 try {       //获取数据库的元数据             DatabaseMetaData db = conn.getMetaData();  //从元数据中获取到所有的表名             rs = db.getTables(null, null, null, new String[] { "TABLE" });                         while(rs.next()) {                 tableNames.add(rs.getString(3));             }         } catch (SQLException e) {             LOGGER.error("获取数据库表名失败===>>>", e);         } finally {            try {                 rs.close();                 closeConnection(conn);             } catch (SQLException e) {                 LOGGER.error("关闭数据库失败===>>>", e);             }         }        return tableNames;     }    /*      * 清空数据库表     */     public static void emptyDatabase() throws SQLException {         List<String> tableNames = getTableNames();         Connection conn = getConnection();         PreparedStatement pStemt = null;                 for(String table:tableNames){                          if(!table.equals("SYSPARAM") && !table.equals("T_CLEAR_DATA")){                 String tableSql = SQL + table;                                 try {                     pStemt = conn.prepareStatement(tableSql);                     Statement stmt=conn.createStatement();                     stmt.executeUpdate(tableSql);                 } catch (SQLException e) {                     e.printStackTrace();                 }             }         }         conn.close();     } }