struts. xml 에서 result 매개 변수 에 따라 다른 json 데 이 터 를 되 돌려 줍 니 다.

  struts.xml result          json  

       result type   result            

           ， action        ：

private List<Goods> entities;
public List<Goods> getEntities() {
	return entities;
}
1．   ：
 xml       param，    ：
<action name="goods" class="cn.csdn.hr.action.GoodsAction">
			<result type="json"/>
</action>
     json  ，  autocomplete       json  ，       ，   ：
{"entities":[{"id":2,"name":"   ","price":222.0},{"id":1,"name":"   ","price":222.0},{"id":3,"name":"   ","price":222.0},{"id":4,"name":"   ","price":222.0},{"id":5,"name":"   ","price":222.0}]
.
2．   ：    param name       ，       json  
<action name="goods" class="cn.csdn.hr.action.GoodsAction">
			<result type="json">
				<param name="root">entities</param>
			</result>
</action>
      ：
[{"id":2,"name":"   ","price":222.0},{"id":1,"name":"   ","price":222.0},{"id":3,"name":"   ","price":222.0},{"id":4,"name":"   ","price":222.0},{"id":5,"name":"   ","price":222.0}]

      json  ，              ，    ：
<param name="root">entities</param>
         entities     ，         json   。


3．   action         ，           ，    ：
private Goods entity;
public Goods getEntity() {
		return entity;
}

      ：
{"entity":{"id":1,"name":"   2","price":222.0}}


4．    param  ，     
<action name="goods" class="cn.csdn.hr.action.GoodsAction">
			<result type="json">
				<param name="root">entity</param>
			</result>
</action>
   ：{"id":1,"name":"   2","price":222.0}


5．   action     ：
private List<Goods> entities;

	private Goods entity;

	public List<Goods> getEntities() {
		return entities;
	}

	public Goods getEntity() {
		return entity;
	}

 xml       ：
<action name="goods" class="cn.csdn.hr.action.GoodsAction">
			<result type="json">
				<param name="root">entity</param>
			</result>
</action>
      entity     
{"id":1,"name":"   2","price":222.0}
6．   ：
<action name="goods" class="cn.csdn.hr.action.GoodsAction">
			<result type="json">
				<param name="root">entities</param>
			</result>
</action>
      entities   ， 
[{"id":2,"name":"   ","price":222.0},{"id":1,"name":"   ","price":222.0},{"id":3,"name":"   ","price":222.0},{"id":4,"name":"   ","price":222.0},{"id":5,"name":"   ","price":222.0}]

7．   xml     ：
<action name="goods" class="cn.csdn.hr.action.GoodsAction">
			<result type="json">
				<param name="root">entities,entity</param>
			</result>
</action>

        ：
{"id":1,"name":"   2","price":222.0}

             

.8。  xml   ：
<result type="json">
		<param name="includeProperties">entities</param>
</result>

      ：
{"entities":[]}


9．  xml    ：
<result type="json">
				<param name="includeProperties">entities\[\d+\].name</param>
			</result>

      ：
{"entities":[{"name":"  1 "},{"name":"   2"},{"name":"  3 "},{"name":"  4 "},{"name":"  5 "}]}


10.  xml    ：
<result type="json">
				<param name="includeProperties">^entities\[\d+\].name</param>
</result>
      :
{"entities":[{"name":"  1 "},{"name":"   2"},{"name":"  3 "},{"name":"  4 "},{"name":"  5 "}]}