JSON处理数据

js、java处理json数据方法

一：js处理json数据

处理办法之一是把本机json数据或远程返回json数据用eval函数，使之变成DOM对象。

例如：

varpeople={

"programmers":[{"firstName":"Elie","lastName":"Harld","email":"elro@maq.com"}],

"authors":[{"firstName":"Isac","lastName":"Asiov","genre":"sciencefiction"}],

"musicians":[{"firstName":"Eric","lastName":"Claon","instrument":"guitar"},

{"firstName":"Seei","lastName":"Rnoff","instrument":"piano"}]

};

二：Java处理json数据

varurl="parseJson.do?people="+escape(people.toJSONString());

java文件

importjavax.servlet.http.HttpServletRequest;

importjavax.servlet.http.HttpServletResponse;

importorg.apache.struts.action.Action;

importorg.apache.struts.action.ActionForm;

importorg.apache.struts.action.ActionForward;

importorg.apache.struts.action.ActionMapping;

importnet.sf.json.JSONObject;

importnet.sf.json.JSONArray;

publicclassJsonActionextendsAction{

@Override

publicActionForwardexecute(ActionMappingmapping,ActionFormform,HttpServletRequestrequest,HttpServletResponseresponse)throwsException{

Stringparam=request.getParameter("people");

JSONObjectjsonObj=JSONObject.fromObject(param);

for(Iteratoriter=jsonObj.keys();iter.hasNext();){//先遍历整个people对象

Stringkey=(String)iter.next();

System.out.println(key);

JSONArrayarray=jsonObj.getJSONArray(key);

for(inti=0;i<array.size();i++){//再遍历整个三个属性(programmers,authors,musicians)的值(数组)

JSONObjectobject=(JSONObject)array.get(i);

for(Iteratoriterator=object.keys();iterator.hasNext();){//最后遍历值中的每个属性

Stringkey2=(String)iterator.next();

System.out.print(""+key2+":"+object.get(key2));

}

System.out.println();

}

System.out.println();

}

//最终输出如果如下：

programmers

firstName:ElielastName:Harldemail:elro@maq.com

authors

firstName:IsaclastName:Asiovgenre:sciencefiction

musicians

firstName:EriclastName:Claoninstrument:guitar

firstName:SeeilastName:Rnoffinstrument:piano

}