在JSP代码中输出JSON格式数据

JSON-taglib是一套JSP标签库用于在JSP代码中输出JSON格式的数据。

JSON-taglib利用json:array, json:object和json:property来实现数据格式的转换。

下面是具体用法：

Just drop the json-taglib.jar file into the WEB-INF/lib directory
of your web-application.

Here's a quick example of how the taglib could be used with an AJAX e-commerce shopping cart. Check out the examples or the
tutorial for full details of how to use the taglib.
调用方法：

<%@ taglib prefix="json" uri="http://www.atg.com/taglibs/json" %>

<json:object>

<json:property name="itemCount" value="${cart.itemCount}"/>

<json:property name="subtotal" value="${cart.subtotal}"/>

<json:array name="items" var="item" items="${cart.lineItems}">

<json:object>

<json:property name="title" value="${item.title}"/>

<json:property name="description" value="${item.description}"/>

<json:property name="imageUrl" value="${item.imageUrl"/>

<json:property name="price" value="${item.price}"/>

<json:property name="qty" value="${item.qty}"/>

</json:object>

</json:array>

</json:object>

JOSN输出结果：

{

itemCount: 2,

subtotal: "$15.50",

items:[

{

title: "The Big Book of Foo",

description: "Bestselling book of Foo by A.N. Other",

imageUrl: "/images/books/12345.gif",

price: "$10.00",

qty: 1

},

{

title: "Javascript Pocket Reference",

description: "Handy pocket-sized reference for the Javascript language",

imageUrl: "/images/books/56789.gif",

price: "$5.50",

qty: 1

}

]

}

Be sure to check out the
examples or the
tutorial for more information about how to use the taglib.

官网：http://json-taglib.sourceforge.net/

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