JSONArray和JSONObject的使用

 

Json 应用

根据对像生成字符串： private String getWholesalePriceJson(List<WholesaleProductPriceDTO> priceDtolist) {         List<WholesalePriceDTO> priceList = new ArrayList<WholesalePriceDTO>();         if (priceDtolist != null) {             for (WholesaleProductPriceDTO wholesaleProductPriceDTO : priceDtolist) {                 priceList.add(new WholesalePriceDTO(getWholesaleStandardPriceIdList(wholesaleProductPriceDTO),                                                  wholesaleProductPriceDTO.getStandard()));             }         }         return JSONArray.fromObject(priceList).toString();     }

页面显示与操作:

function checkStandard(){         var YLJ = YAHOO.lang.JSON;         var priceList = YLJ.parse(document.getElementById("wholesalePrice").value);         //开始校验重复数据         var map={};         for (var i = 0; i < priceList.length; i++) {          if(priceList[i].value.length > 32) {           alert("您好，产品介格中产品规则字段长度超过32!");           return false;          }             if(map[priceList[i].value] == null) {           map[priceList[i].value] = 1;          } else {           alert("您好，产品价格中产品规则字段有重复值!");           return false;          }         }         return true;        }                

再转换回去成为对象.

JSONArray array = JSONArray.fromObject(json); return (List<WholesalePriceDTO>) JSONArray.toCollection(array, WholesalePriceDTO.class);

这样简单的应用就完成了

()

//使用JSONObject JSONArray 类 JSONArray array = new JSONArray(); JSONObject jobject = new JSONObject(); String titles = "<a href=/"http://www.163.com/">我是/"title/"</a>"; for (int n = 0; n < 5; n++){     JSONObject jo = new JSONObject();     jo.put("id",n);     jo.put("title",titles + n);     jo.put("cruser","cruser"+n);     jo.put("crdate","crdate"+n);     jo.put("udtuser","udtuser"+n);     jo.put("udtdate","udtdate"+n);     jo.put("hits","hits"+n);     jo.put("hot",true);     jo.put("ordernum",n);     jo.put("status","status"+n);     array.put(jo); } jobject.put("totalCount",30); jobject.put("root",array); System.out.println(jobject); 记得 import java.util.*; import org.json.*; 还有try catch

（补充）

package com.longtop.ajax.json;

import java.util.HashMap; import java.util.Iterator; import java.util.Map;

import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject ;

public class TestServlet {    public static void main(String[] args){     TestServlet ts=new TestServlet();     System.out.println(ts.dellJson());        // JSONObject jo=JSONObject .fromObject(ts.dellJson());            try{      JSONObject jo=new JSONObject (ts.dellJson());      JSONArray asonArray = jo.getJSONArray("addressbood");      Object o = asonArray.get(1);      JSONObject jo1 = (JSONObject )o;      System.out.println(jo1.toString());           //JSONArray array=jo1.getJSONArray("address");          System.out.println(jo1.get("address"));      JSONArray asonArray1 = jo1.getJSONArray("address");      JSONObject jo11 = (JSONObject )asonArray1.get(0);      System.out.println(jo11.getString("city"));     }catch(JSONException a){       a.printStackTrace();    }        }    public String dellJson(){     String str="";     Map map=new HashMap();     Address maryLebow = new Address("5 Main Street","San Diego, CA","91912","619-332-3452","664-223-4667");     map.put("Mary Lebow",maryLebow);

    Address amySmith = new Address("25 H Street","Los Angeles, CA","95212","660-332-3452","541-223-4667");     map.put("Sally May",amySmith);

    Address johnKim = new Address("2343 Sugarland Drive","Houston, TX","55212","554-332-3412","461-223-4667");     map.put("John Kim",johnKim);

    Address richardThorn = new Address("14 68th Street","New York, NY","12452","212-132-6182","161-923-4001");     map.put("Richard Thorn",richardThorn);       Iterator it=map.entrySet().iterator();                    JSONArray ja=new JSONArray();         while(it.hasNext()){         Map.Entry e=(Map.Entry)it.next();         String name=(String)e.getKey();         Address add=(Address)e.getValue();         String city=add.getCity();         String street=add.getStreet();         String zip=add.getZip();         String phone1=add.getPhoneNumber1();         String phone2=add.getPhoneNumber2();         try{                      JSONObject jbAddress=new JSONObject ();             jbAddress.append("street",street);             jbAddress.append("city",city);             jbAddress.append("zip",zip);             JSONArray jaPhone=new JSONArray();             jaPhone.put( phone1);             jaPhone.put( phone2);             JSONObject jbAddressBook=new JSONObject ();             jbAddressBook.append("name",name);             jbAddressBook.append("address",jbAddress);             jbAddressBook.append("phoneNumbers",jaPhone);                      ja.put(jbAddressBook);                     }catch(JSONException a){            a.printStackTrace();         }                 }         try{         str=new JSONObject ().put("addressbood",ja).toString();         }catch(JSONException a){        a.printStackTrace();     }                 return str;    } }