获取指定数据库和用户的所有表表名

import java.io.IOException;

import java.io.InputStream;

import java.sql.Connection;

import java.sql.DatabaseMetaData;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import java.util.List;

import java.util.Properties;



import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.loushang.persistent.jdbc.datasource.PropertyDataSourceFactoryImpl;



public class DataBaseUtil {

 private static Log logger = LogFactory.getLog(DataBaseUtil.class);

 

 public static final String DATASOURCE_FILENAME = "datasource.properties"; //连接数据库的数据源文件

 public static final String DATASOURCE_URL = "dataSource.url";             //数据源文件里url的key

 public static final String DATASOURCE_USERNAME = "dataSource.username";   //数据源文件里用户名的key

 

 /**

  * 读取配置文件信息

  * @return Properties 配置文件信息

  */

 public static Properties getProperties() {

  //InputStream in = ClassLoader.getSystemResourceAsStream(DATASOURCE_FILENAME);

  

  InputStream in = PropertyDataSourceFactoryImpl.class.getClassLoader()

    .getResourceAsStream(DATASOURCE_FILENAME);

  if (in == null) {

   in = Thread.currentThread().getContextClassLoader().getResourceAsStream(DATASOURCE_FILENAME);

   if(in == null){

    logger.warn("Can not find the  datasource config file 'datasource.properties'.");

   }

  }

  Properties properties = new Properties();

  try {

   properties.load(in);

  } catch (IOException e) {

   logger.error("Error occurred when loading datasource config file.", e);

  }

  return properties;

 }

 /**

  * 读取配置文件获取连接数据库的数据库名

  * @return String 数据库名

  */

 public static String getDatabaseName() {

  String databaseName = "";  

  Properties p = getProperties();

  String database = p.getProperty(DATASOURCE_URL);

  int startIndex = database.lastIndexOf(":");

  databaseName = database.substring(startIndex+1, database.length());  

  return databaseName;

 }

 /**

  * 读取配置文件获取连接数据库的用户名

  * @return String 用户名

  */

 public static String getUserOfDatabase() {

  String user = "";

  Properties p = getProperties();

  user = p.getProperty(DATASOURCE_USERNAME);

  return user;

 }

 /**

  * 获取指定数据库和用户的所有表名

  * @param conn 连接数据库对象

  * @param user 用户

  * @param database 数据库名

  * @return

  */

 public static List getAllTableNames(Connection conn, String user, String database) {

  List tableNames = new ArrayList();

  if (conn != null) {

   try {

    DatabaseMetaData dbmd = conn.getMetaData();

    // 表名列表

    ResultSet rest = dbmd.getTables(database, null, null, new String[] { "TABLE" });

    // 输出 table_name

    while (rest.next()) {

     String tableSchem = rest.getString("TABLE_SCHEM");

     if (user.equalsIgnoreCase(tableSchem)) {

      tableNames.add(rest.getString("TABLE_NAME"));

     }

    }

   } catch (SQLException e) {

    e.printStackTrace();

   }

  }

  return tableNames;

 }

  public static void main(String [] args) {

  Connection conn = null;     

     try{

     /* String url="jdbc:oracle:thin:@10.*.*.*:1521:***";

         Class.forName("oracle.jdbc.driver.OracleDriver");

         conn = DriverManager.getConnection(url , "*" , "*");*/

  

     DataSource datasource = DataSourceFactory.defaultFactory.getDataSource("dataSource");

     conn = datasource.getConnection();

  } catch (SQLException e1) {

   e1.printStackTrace();

  } catch (ClassNotFoundException e) {

   e.printStackTrace();

  }

  List tables = getAllTableNames(conn, getUserOfDatabase(), getDatabaseName());

  System.out.println(tables.size());

  

 }

}