Java(103):列表转化成map；map和json互换

1、列表转化成map

        //字段名和字段值
        String column = "aoeId,aoeAes,aoeSm4,aoeSm4_a,aoeEmail,aoePhone,aoeIdCard,aoeOfficerCard,aoePassport,aoeGeneralIdCard,aoeCreditCard,aoePosition";
        String value="1,吴秀梅,Beijing Refining Network Technology Co.Ltd.,海淀区,qianxiulan@yahoo.com,15652996964,210302199608124861,武水电字第3632734号,BWP018930705,0299233902,6212262502009182455,测试数据";
        //解析字段名
        column_aa = column.split(",");
        columnList = Arrays.asList(column_aa);
 
        //解析值
        value_aa = value.split(",");
        valueList.addAll(Arrays.asList(value_aa));
        //第一个值是整型
        valueList.set(0,Integer.valueOf(valueList.get(0).toString()));
 
        //列表转换成map
        mapInput = columnList.stream().collect(Collectors.toMap(key->key, key->valueList.get(columnList.indexOf(key))));

{aoePhone=15652996964, aoeOfficerCard=武水电字第3632734号, aoeSm4=Beijing Refining Network Technology Co.Ltd., aoeSm4_a=海淀区, aoeId=1, aoePassport=BWP018930705, aoeAes=吴秀梅, aoeIdCard=210302199608124861, aoeEmail=qianxiulan@yahoo.com, aoePosition=测试数据, aoeCreditCard=6212262502009182455, aoeGeneralIdCard=0299233902}

2、Map转化成json字符串

System.out.println(mapInput);

{aoePhone=15652996964, aoeOfficerCard=武水电字第3632734号, aoeSm4=Beijing Refining Network Technology Co.Ltd., aoeSm4_a=海淀区, aoeId=1, aoePassport=BWP018930705, aoeAes=吴秀梅, aoeIdCard=210302199608124861, aoeEmail=qianxiulan@yahoo.com, aoePosition=测试数据, aoeCreditCard=6212262502009182455, aoeGeneralIdCard=0299233902}

String jsonStr = JSONObject.toJSONString(mapInput);

System.out.println(jsonStr);

{"aoePhone":"15652996964","aoeOfficerCard":"武水电字第3632734号","aoeSm4":"Beijing Refining Network Technology Co.Ltd.","aoeSm4_a":"海淀区","aoeId":1,"aoePassport":"BWP018930705","aoeAes":"吴秀梅","aoeIdCard":"210302199608124861","aoeEmail":"qianxiulan@yahoo.com","aoePosition":"测试数据","aoeCreditCard":"6212262502009182455","aoeGeneralIdCard":"0299233902"}

3、JSON字符串转化成Map（需用alibaba的fastjson）

   
   
        com.alibaba
        fastjson
        1.2.76
   

1、字符串转化成JSON

//定义一个json格式的字符串
String message = "{"code":1,"data":{"id":001,"name":"hmf"}}";
//将字符串转换成json
JSONObject jsonObject = JSONObject.parseObject(message);

2、JSON转化成字符串

//定义一个json格式的字符串
String message = "{"code":1,"data":{"id":001,"name":"hmf"}}";
//将字符串转换成json
JSONObject jsonObject = JSONObject.parseObject(message);
//取出data里的数据
String code = jsonObject.getString("code");
String data = jsonObject.getString("data");
 
System.out.println(code); //输出结果为：1
System.out.println(data); //输出结果为：{"id":001,"name":"hmf"}