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客串java开发:数据库访问的流程简化 - 编程入门网

作者 佚名技术 来源 NET编程 浏览 发布时间 2012-06-20
tSet resultSet){      _connection = connection;      _statement = statement;      _resultSet = resultSet;    }    private Connection getConnection(){      return _connection;    }    private Statement getStatement(){      return _statement;    }    public ResultSet getResultSet(){      return _resultSet;    }    public void close() throws SQLException{      getResultSet().close();      getStatement().close();      getConnection().close();    } }

揖扮?糞?匯倖全俊勧由方象垂議絹廁窃?

package queen.data; import java.io.IOException; import java.sql.Connection; import java.sql.Statement; import java.sql.ResultSet; import java.sql.DriverManager; import java.util.Properties; /*   * 方象垂恵諒匂   *   * @author Howard Queen   * @version 1.0.1, 2010/10/12   * */ public final class DbExecutor implements IExecutor {    static{      try {        Class.forName("com.mysql.jdbc.Driver");      } catch (ClassNotFoundException e) {        e.printStackTrace();      }    }    private String _connectionString;    private String _userName, _password;    public String getConnectionString() {      return _connectionString;    }    public void setConnectionString(String value) throws Exception {      throw new Exception("萩聞喘揖兆嶷墮圭隈 setConnectionString(String connectionString,                   String userName, String password) 譜崔全俊歌方!");    }    public void setConnection(String connectionString, String userName, String password){      _connectionString = connectionString;      _userName = userName;      _password = password;    }    public void setConnectionFromProperties(String fileName, String connectionStringPropertyName,          String userNamePropertyName, String passwordPropertyName) throws IOException{      Properties p = new Properties();      p.load(DbExecutor.class.getResourceAsStream(fileName));      String connectionString = p.getProperty(connectionStringPropertyName);      String userName = p.getProperty(userNamePropertyName);      String password = p.getProperty(passwordPropertyName);      setConnection(connectionString, userName, password);    }    public String getUserName(){      return _userName;    }    public String getPassword(){      return _password;    }    private int _timeout;    public int getTimeout() {      return _timeout;    }    public void setTimeout(int value) {      _timeout = value;    }    public int executeNonQuery(String statement) throws Exception{      Connection con = null;      Statement stm = null;      try{        con = DriverManager.getConnection(getConnectionString(), getUserName(), getPassword());       

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