JAVA中如何将一个json形式的字符串转为json对象或对象列表

我就是我 2022-03-28 15:26 211阅读 0赞

import java.util.*;
    import java.text.SimpleDateFormat;
    
    import org.json.JSONObject;
    import org.json.JSONArray;
    import org.json.JSONException;
    
    
    
    public class test_client {
    
        public static  void test(){
            //把json字符串转为json对象
            String js ="{\"uniqueCode\":\"OTTCD015\",\"terminalBrandCode\":\"10\",\"equipmentBrand\":\"夏普\"}";
            JSONObject jsonObj = new JSONObject(js);
            System.out.println(jsonObj.get("uniqueCode"));
    
            //把json字符串列表转为json对象列表
            String jslist ="[{\"uniqueCode\":\"OTTCD015\",\"terminalBrandCode\":\"10\",\"equipmentBrand\":\"夏普\"}," +
                    "{\"uniqueCode\":\"OTTCD016\",\"terminalBrandCode\":\"30\",\"equipmentBrand\":\"惠普\"}]";
            JSONArray objar = new JSONArray(jslist);
            List<Object>  list = objar.toList();
            for(Object obj :list){
    //            System.out.println(obj.toString());
                Map<String,Object> map = (HashMap<String,Object>)obj;
                Set<String> sets = map.keySet();
                for(String key:sets){
                    System.out.println(key+": "+map.get(key));
                }
                System.out.println();
            }
        }

输出：

OTTCD015

*　　　　uniqueCode: OTTCD015  
　　　　terminalBrandCode: 10  
　　　　equipmentBrand: 夏普*

uniqueCode: OTTCD016  
　　　　terminalBrandCode: 30  
　　　　equipmentBrand: 惠普