java+json数据格式例子

package json.web; import java.io.PrintWriter; import java.util.Enumeration; import java.util.HashSet; import java.util.Iterator; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import json.biz.StudentBiz; import json.entity.Student; import net.sf.json.JSONArray; import net.sf.json.JSONObject; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import org.apache.struts.actions.DispatchAction; public class Action extends DispatchAction{ public ActionForward doList(ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) throws Exception{ StudentBiz sb=new StudentBiz(); JSONArray array=JSONArray.fromObject(sb.getList()); PrintWriter out=response.getWriter(); out.write(array.toString()); request.getSession().setAttribute("string", "holle"); return null; } public ActionForward toObject(ActionMapping maping,ActionForm form,HttpServletRequest request,HttpServletResponse response) throws Exception{ JSONObject jo=JSONObject.fromObject(request.getParameter("newObject")); System.out.println("userName="+jo.get("username")); System.out.println("password="+jo.get("password")); List list=(List) jo.get("aa"); for(int i=0;i<list.size();i++){ System.out.println("list"+(i+1)+"="+list.get(i)); } return null; } }