java 执行存储过程例子

  private String addcwform(String recordsumid) {

    CallableStatement proc = null;
    Connection conn = null;
    try {
      conn = DBUtil.getConn();
      proc = conn.prepareCall("{ ? = call cwnew_pack.addCwform(?) }");
      proc.registerOutParameter(1, Types.CHAR);
      proc.setString(2, recordsumid);

      proc.execute();
      String str = proc.getString(1);
      return str;

    }
    catch (SQLException e) {
      Log.fetal("失败:" + e + "cwnew_pack.addCwform" + ",recordsumid=" +
                recordsumid);
    }
    finally {

      freeclose(proc, conn);
    }
    return "";
  }

 

 private void freeclose(CallableStatement proc, Connection conn) {
    try {
      proc.close();
    }
    catch (Exception ex) {
      Log.fetal("关闭:proc,失败," + ex.toString());
    }
    this.closeConn(conn);

  }

/**
   * 关闭所有的连接
   */
  public void closeConn(Connection conn) {

    try {
      conn.close();
    }
    catch (Exception e) {
      Log.fetal("数据库连接,关闭错误:" + e);
    }

  }

注意,以下使用数据库为sql2000,驱动jtds1.2.2 一、调用存储过程(无结果集返回) Connection connection = ConnectionHelper.getConnection(); CallableStatement callableStatement = connection.prepareCall("{ call procedureName(?,?) }"); callableStatement.setString(1, "xxxxxxxx"); callableStatement.setString(2, "xxxxxxxx"); callableStatement.execute(); //获得sql的消息并输出,这个估计很多人都需要 SQLWarning sqlWarning = callableStatement.getWarnings(); while (sqlWarning != null) { System.out.println("sqlWarning.getErrorCode() = " + sqlWarning.getErrorCode()); System.out.println("sqlWarning.getSQLState() = " + sqlWarning.getSQLState()); System.out.println("sqlWarning.getMessage() = " + sqlWarning.getMessage()); sqlWarning = sqlWarning.getNextWarning(); } //close ConnectionHelper.closeConnection(callableStatement, connection); 二、调用存储过程,返回sql类型数据(非记录集) Connection connection = ConnectionHelper.getConnection(); CallableStatement callableStatement = connection.prepareCall("{ call procedureName(?,?,?) }"); callableStatement.setString(1, "xxxxxxxx"); callableStatement.setString(2, "xxxxxxxx"); //重点是这句1 callableStatement.registerOutParameter(3, Types.INTEGER); callableStatement.execute(); //取返回结果,重点是这句2 //int rsCount = callableStatement.getInt(3); //close ConnectionHelper.closeConnection(callableStatement, connection); 三、重点来了,返回记录集,多记录集 注意,不需要注册返回结果参数,只需要在sql中select出结果即可 例如:select * from tableName 即可得到返回结果 Connection connection = ConnectionHelper.getConnection(); CallableStatement callableStatement = connection.prepareCall("{ call procedureName(?) }"); //此处参数与结果集返回没有关系 callableStatement.setString(1, "xxxxxxxx"); callableStatement.execute(); ResultSet resultSet = callableStatement.getResultSet(); //以上两个语句,可以使用ResultSet resultSet = callableStatement.executeQuery();替代 //多结果返回 ResultSet resultSet2; if (callableStatement.getMoreResults()) { resultSet2 = callableStatement.getResultSet(); while (resultSet2.next()) { } } //close ConnectionHelper.closeConnection(callableStatement, connection); 提示:多结果返回可以使用如下代码(以上主要让大家明白,单一结果和多结果的区别): Boolean hasMoreResult = true; while (hasMoreResult) { ResultSet resultSet = callableStatement.getResultSet(); while (resultSet.next()) { } hasMoreResult = callableStatement.getMoreResults(); }
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