针对于存储过程，JDBC模块提供了IProcedureOperator操作器接口及其默认接口实现类DefaultProcedureOperator来帮助你完成，存储过程有以下几种调用方式，举例说明：

• 有输入参数无输出参数：

  IConnectionHolder _conn = JDBC.get().getDefaultConnectionHolder();
  try {
      // 执行名称为`procedure_name`的存储过程，并向该存储过程转入两个字符串参数
      IProcedureOperator<Object[]> _opt = new DefaultProcedureOperator<Object[]>("procedure_name", _conn)
              .addParameter("param1")
              .addParameter("param2")
              .execute(IResultSetHandler.ARRAY);
      // 遍历结果集集合
      for (List<Object[]> _item : _opt.getResultSets()) {
          ResultSetHelper.bind(_item).forEach(new ResultSetHelper.ItemHandler() {
              public boolean handle(ResultSetHelper.ItemWrapper wrapper, int row) throws Exception {
                  System.out.println(wrapper.toObject(new ArchiveVObject()).toJSON());
                  return true;
              }
          });
      }
  } finally {
      _conn.release();
  }
  

• 有输入输出参数：

  IConnectionHolder _conn = JDBC.get().getDefaultConnectionHolder();
  try {
      // 通过addOutParameter方法按存储过程输出参数顺序指定JDBC参数类型
      new DefaultProcedureOperator("procedure_name", _conn)
              .addParameter("param1")
              .addParameter("param2")
              .addOutParameter(Types.VARCHAR)
              .execute(new IProcedureOperator.IOutResultProcessor() {
                  public void process(int idx, int paramType, Object result) throws Exception {
                      System.out.println(result);
                  }
              });
  } finally {
      _conn.release();
  }
  

• 另一种写法：

  JDBC.get().openSession(new ISessionExecutor<List<List<Object[]>>>() {
      public List<List<Object[]>> execute(ISession session) throws Exception {
          // 创建存储过程操作器对象
          IProcedureOperator<Object[]> _opt = new DefaultProcedureOperator<Object[]>("procedure_name", session.getConnectionHolder())
                  .addParameter("param1")
                  .addParameter("param2")
                  .addOutParameter(Types.VARCHAR)
                  .addOutParameter(Types.INTEGER)
                  .setOutResultProcessor(new IProcedureOperator.IOutResultProcessor() {
                      public void process(int idx, int paramType, Object result) throws Exception {
                          System.out.println(result);
                      }
                  }).setResultSetHandler(IResultSetHandler.ARRAY);
          // 执行
          _opt.execute();
          return _opt.getResultSets();
      }
  });