红帽全球峰会96.3. 查询的结果
对于 选择 操作，结果是 List<Map<String, Object>& gt; 类型的实例，如 JdbcTemplate.queryForList （）方法返回。对于 更新操作，结果是更新的行数，以 整数 形式返回。
默认情况下，结果放置在消息正文中。如果设置了 outputHeader 参数，则结果将放在标头中。这是使用完整消息增强模式添加标头的替代选择，它提供了一个简洁的语法，用于查询序列或某些其他小值到标头中。最好将 outputHeader 和 outputType 搭配使用：
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