java相关的Struts2-Json插件的使用例子

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The JSON plugin provides a "json" result type that serializes actions into JSON. The serialization process is recursive, meaning that the whole object graph, starting on the action class (base class not included) will be serialized (root object can be customized using the "root" attribute). If the interceptor is used, the action will be populated from the JSON content in the request, these are the rules of the interceptor:

The "content-type" must be "application/json"

The JSON content must be well formed, see for grammar. Action must have a public "setter" method for fields that must be populated.

Supported types for population are: Primitives (int,long...String), Date, List, Map, Primitive Arrays, Other class (more on this later), and Array of Other class.

Any object in JSON, that is to be populated inside a list, or a map, will be of type Map (mapping from properties to values), any whole number will be of type Long, any decimal number will be of type Double, and any array of type List.

JSON插件提供一种叫做“json”返回类型，来将action序列化成JSON格式。序列化过程是递归的，这意味着整个对象图（从action开始，父类不会被序列化）都会被序列化（根对象可以通过“root”属性来自定义）。如果设置了拦截器，action将被请求中的JSON填充，下面是拦截器的规则：

1．请求的"content-type"必须为"application/json" 2．JSON内容必须是格式良好的，语法参见json.org 3．Action中被填充的属性必须要有一个setter方法

4．可以被填充的类型包括：原生类型（），Date，List, Map, 原生数组，其他class，和其他class的数组