Best way to create SEO friendly URI string

问题

The method should allows only "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-" chars in URI strings.

What is the best way to make nice SEO URI string?

回答1:

This is what the general consensus is:

Lowercase the string.
```
string = string.toLowerCase();
```
Normalize all characters and get rid of all diacritical marks (so that e.g. é, ö, à becomes e, o, a).
```
string = Normalizer.normalize(string, Form.NFD).replaceAll("\\p{InCombiningDiacriticalMarks}+", "");
```
Replace all remaining non-alphanumeric characters by - and collapse when necessary.
```
string = string.replaceAll("[^\\p{Alnum}]+", "-");
```

So, summarized:

public static String toPrettyURL(String string) {
    return Normalizer.normalize(string.toLowerCase(), Form.NFD)
        .replaceAll("\\p{InCombiningDiacriticalMarks}+", "")
        .replaceAll("[^\\p{Alnum}]+", "-");
}

回答2:

The following regex will do the same thing as your algorithm. I'm not aware of libraries for doing this type of thing.

String s = input
.replaceAll(" ?- ?","-") // remove spaces around hyphens
.replaceAll("[ ']","-") // turn spaces and quotes into hyphens
.replaceAll("[^0-9a-zA-Z-]",""); // remove everything not in our allowed char set

回答3:

These are commonly called "slugs" if you want to search for more information.

You may want to check out other answers such as How can I create a SEO friendly dash-delimited url from a string? and How to make Django slugify work properly with Unicode strings?

They cover C# and Python more than javascript but have some language-agnostic discussion about slug conventions and issues you may face when making them (such as uniqueness, unicode normalization problems, etc).

来源：https://stackoverflow.com/questions/4581025/best-way-to-create-seo-friendly-uri-string

标签

java

string

char

uri

slug