5.2.1 standard Analyzer 标注解析器

标准 解析器是默认使用于所有的全文解析字符串字段。如果我们使用一个 自定义解析器 来重新实现 标准 解析器，那写法就大概是这个样子：

{
    "type":      "custom",
    "tokenizer": "standard",
    "filter":  [ "lowercase", "stop" ]
}

在 Normalizing Tokens 和 Stopwords: Performance Versus Precision 这两段中我们就 小写化 和 无用词 过滤器 作了相关的讨论，那现在，让我们来对 标准 分词器 来做个深入探讨。

The standard analyzer is used by default for any full-text analyzed string field. If we were to reimplement the standard analyzer as a custom analyzer, it would be defined as follows:

{
    "type":      "custom",
    "tokenizer": "standard",
    "filter":  [ "lowercase", "stop" ]
}

In Normalizing Tokens and Stopwords: Performance Versus Precision, we talk about the lowercase, and stop token filters, but for the moment, let’s focus on the standard tokenizer.