java中json字符串格式化层级目录输出

控制台输出json字符串：

{"header":{"transSn":"e33128bb7622462ebfb2cbfcc46baa14","dateTime":"20181002110000","serviceCode":"********","appId":"999999999999","bizId":"000000","version":"1.0","resType":"A","resCode":"SSS000","resMsg":"交易成功(业务附加消息:*****)"},"resBody":{"operator":"lgh","rowNumStart":"1","pageRowNum":"100","pageFlag":"0","totalRowNum":"1","orderFlag":"0","orderField":"","result":[{"flag":"1","riskCode":"00567000","riskName":"567*********","prem":"520.00","amntOrMult":"***","amnt":"200000","polNo":"12177"}]}}

在Java后台如何进行json格式化输出呢下面直接贴代码。

封装一个工具类专门转换json格式化：

* @param resString

     * @return String

     * @throws

     * @Description 响应数据格式化

     * @author lgh

     * @date 2018/10/29-13:45

     */

    private String responseFormat(String resString){

 

        StringBuffer jsonForMatStr = new StringBuffer();

        int level = 0;

        for(int index=0;index<resString.length();index++)//将字符串中的字符逐个按行输出

        {

            //获取s中的每个字符

            char c = resString.charAt(index);

 

            //level大于0并且jsonForMatStr中的最后一个字符为
,jsonForMatStr加入	

            if (level > 0  && '
' == jsonForMatStr.charAt(jsonForMatStr.length() - 1)) {

                jsonForMatStr.append(getLevelStr(level));

            }

            //遇到"{"和"["要增加空格和换行，遇到"}"和"]"要减少空格，以对应，遇到","要换行

            switch (c) {

                case '{':

                case '[':

                    jsonForMatStr.append(c + "
");

                    level++;

                    break;

                case ',':

                    jsonForMatStr.append(c + "
");

                    break;

                case '}':

                case ']':

                    jsonForMatStr.append("
");

                    level--;

                    jsonForMatStr.append(getLevelStr(level));

                    jsonForMatStr.append(c);

                    break;

                default:

                    jsonForMatStr.append(c);

                    break;

            }

        }

        return jsonForMatStr.toString();

    }

    /**

     * @param level

     * @return

     * @throws

     * @author lgh

     * @date 2018/10/29-14:29

     */

    private String getLevelStr(int level) {

        StringBuffer levelStr = new StringBuffer();

        for (int levelI = 0; levelI < level; levelI++) {

            levelStr.append("	");

        }

        return levelStr.toString();

    }

同样的数据输出之后就达到预期效果：

{

    "header":{

        "transSn":"e33128bb7622462ebfb2cbfcc46baa14",

        "dateTime":"20181002110000",

        "serviceCode":"********",

        "appId":"999999999999",

        "bizId":"000000",

        "version":"1.0",

        "resType":"A",

        "resCode":"SSS000",

        "resMsg":"交易成功(业务附加消息:***)"

    },

    "resBody":{

        "operator":"lgh",

        "rowNumStart":"1",

        "pageRowNum":"100",

        "pageFlag":"0",

        "totalRowNum":"1",

        "orderFlag":"0",

        "orderField":"",

        "result":[

            {

                "flag":"1",

                "riskCode":"00567000",

                "riskName":"567 ****",

                "prem":"520.00",

                "amntOrMult":"***",

                "amnt":"200000",

                "polNo":"12177"

            }

        ]

    }

}

原博主链接：https://blog.csdn.net/qq_39470733/article/details/83506752