1.實體類轉換方法

參照文章：http://www.cnblogs.com/dflmg/p/6933811.html

2.K-V方法（此方法比較笨，但是沒有辦法，我現在不知道有沒有相關的簡單API，只能自己手動拼出一個方法。import org.apache.commons.lang.StringUtils;）

String s = "{‘request‘: {‘enterpriseid‘: 55,‘ownerCode‘: ‘SunEee01‘,‘item‘: [{‘itemName‘: ‘1熊孩子新疆無花果成品268g‘,‘itemType‘: ‘ZC‘,‘barCode‘: ‘6924459400256‘,‘shelfLife ‘: 0, ‘itemCode‘: ‘xhzwhggcp_268‘},
{‘itemName‘: ‘2好孩子新疆無花果成品268g‘,‘itemType‘: ‘ZC‘,‘barCode‘: ‘6924459400256‘,‘shelfLife ‘: 1, ‘itemCode‘: ‘xhzwhggcp_268‘}]}}";
        
 
//String s = "{‘request‘: {‘enterpriseid‘: 55,‘ownerCode‘: ‘SunEee01‘,‘item‘: [{‘itemName‘: ‘好孩子新疆無花果成品268g‘,‘itemType‘: ‘ZC‘,‘barCode‘: ‘6924459400256‘,‘shelfLife ‘: 1, ‘itemCode‘: ‘xhzwhggcp_268‘}]}}";
        JSONObject jsonObject = JSONObject.fromObject(s);
        //System.out.println(jsonObject);
        
        String request 
 
= jsonObject.getString("request");
        //System.out.println(request);
        
        JSONObject vendorDO = JSONObject.fromObject(request);
        //System.out.println(vendorDO);
        
        String ent = vendorDO.getString("item");
        //對象實體類的方法System.out.println(ent);
        /*JSONArray ents = vendorDO.getJSONArray("item");
        List<Item> ss = (List<Item>)JSONArray.toList(ents,Item.class);
        for(Item x:ss){
            //如果item裏面還有List對象作為屬性就使用1的方法，參見http://www.cnblogs.com/dflmg/p/6933811.html
            System.out.println(x.getItemName());
        }
 
*/

        String[] many = ent.split("\\},\\{");
        
        if(many.length==1){
            String one = many[0].substring(1,ent.length()-1);
            
            JSONObject joss = JSONObject.fromObject(one);
            String itemName = joss.getString("itemName");
            System.out.println(itemName);
            
        }else{
            for(int i=0;i<many.length;i++){
            if(i==0){
                String frist = many[i].substring(1)+"}";
                
                JSONObject joss = JSONObject.fromObject(frist);
                String itemName = joss.getString("itemName");
                System.out.println(itemName);
                
                
            }else if(i==many.length-1){
                String middle = "{"+StringUtils.substringBefore(many[i], "]");
                
                JSONObject joss = JSONObject.fromObject(middle);
                String itemName = joss.getString("itemName");
                System.out.println(itemName);
            }else{
                String last = "{"+many[i]+"}";
                
                JSONObject joss = JSONObject.fromObject(last);
                String itemName = joss.getString("itemName");
                System.out.println(itemName);
                
            }
        }}

【Java】提取JSON數值時遇到數組集合時使用的K-V方式轉換