JSP 2.0 SEO友好链接编码 [英] JSP 2.0 SEO friendly links encoding

问题描述

目前我的JSP中有这样的东西

Currently I have something like this in my JSP

<c:url value="/teams/${contact.id}/${contact.name}" />

我的网址的重要部分是ID，我只是为了SEO目的而把它放在上面（就像stackoverflow.com那样。）

The important part of my URL is the ID, I just put the name on it for SEO purposes (just like stackoverflow.com does).

我只是想知道是否有一种快速而干净的编码名称的方法（更改每个空格） +，拉丁字符删除等）。我希望它是这样的：

I was just wondering if there is a quick and clean way to encode the name (change spaces per +, latin chars removal, etc). I'd like it to be like this:

<c:url value="/teams/${contact.id}/${supercool(contact.name)}" />

那里有这样的功能还是应该自己动手？

Is there a function like that out there or should I make my own?

推荐答案

JSTL函数。你需要创建自己的。顺便说一句，我用 - 代替空格。

Nothing like that is available in JSTL functions. You'll need to create your own. I'd by the way rather replace spaces by -.

到目前为止，你要执行以下操作步骤：

To the point, you want to perform the following steps:

1. 小写字符串。

1. Lowercase the string.

string = string.toLowerCase();

规范化所有字符并摆脱所有变音标记。

string = Normalizer.normalize(string, Form.NFD).replaceAll("\\p{InCombiningDiacriticalMarks}+", "");

用替换所有剩余的非字母数字字符 - 并在必要时崩溃。

string = string.replaceAll("[^\\p{Alnum}]+", "-");

您可以将其包装在EL函数中：

You can wrap this in an EL function:

package com.example;

import java.text.Normalizer;
import java.text.Normalizer.Form;

public final class Functions {
     private Functions() {}

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

您在中注册/WEB-INF/functions.tld 如下所示：

<?xml version="1.0" encoding="UTF-8" ?>
<taglib 
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-jsptaglibrary_2_1.xsd"
    version="2.1">

    <display-name>Custom Functions</display-name>    
    <tlib-version>1.0</tlib-version>
    <uri>http://example.com/functions</uri>

    <function>
        <name>prettyURL</name>
        <function-class>com.example.Functions</function-class>
        <function-signature>java.lang.String prettyURL(java.lang.String)</function-signature>
    </function>
</taglib>

您可以在JSP中使用以下内容：

Which you can use in JSP as follows:

<%@taglib uri="http://example.com/functions" prefix="f" %>
...
<a href="teams/${contact.id}/${f:prettyURL(contact.name)}">Permalink</a>

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