今天在開發的時候遇到的問題：

由于需要調用rest服務，所以將dto對象轉換為JSON的時候出現了日期格式不正確的問題：

首先查看接收的DTO：

由于接口需要以數組的方式傳輸： JSONArray jsonArray = array.fromObject ( Arrays.asList ( esbDto ) );

在日志中查看轉化之后的json：

[{"applyType": "INJURE","address": "","accountName": "XXX","injuryType": "DISABILITY","receiveOtherMoney": 0,"costAmount": 12333,"description": "開發測試","bankName": "中行","treatmentList": [],"recordId": 1903011404540000,"fundingEmployeeCode": "3594","phoneNumber": "13344444444","createdBy": "3594","fundingEmployeeName": "XXX","happenDate": {"date": 5,"hours": 0,"seconds": 0,"month": 2,"timezoneOffset": -480,"year": 119,"minutes": 0,"time": 1551715200000,"day": 2},"selfpayingAmount": 12333,"appliedBy": "00003594","familyLossAmount": 0,"applyDate": {"date": 1,"hours": 14,"seconds": 54,"month": 2,"timezoneOffset": -480,"year": 119,"minutes": 4,"time": 1551420294418,"day": 5},"relationship": "本人","account": "513123124123123123","familyMemberName": "XXX"} ]

可以很明顯的看到兩個日期對象不是我們想要的YYYY-MM-dd類型，

所以，很明顯我們需要自己寫一個轉化器：

public class JsonDateValueProcessor implements JsonValueProcessor {@Overridepublic Object processArrayValue(Object obj, JsonConfig jsonconfig) {return process(obj);}@Overridepublic Object processObjectValue(String s, Object obj, JsonConfig jsonconfig) {return process(obj);}private Object process(Object obj) {if (obj == null) {// 如果時間為null，則返回空字串return "";}if (obj instanceof Date) {obj = new java.util.Date(((Date) obj).getTime());}if (obj instanceof java.util.Date) {SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd",Locale.CHINA);// 格式化時間為yyyy-MM-dd類型return sdf.format(obj);} else {return new Object();}} }

然后將其注冊到jsonConfig中：

//2.json 包裝JsonConfig jsonConfig = new JsonConfig();jsonConfig.registerJsonValueProcessor(Date.class,new JsonDateValueProcessor());// 注入處理Date類JSONArray jsonArray = array.fromObject ( Arrays.asList ( esbDto ),jsonConfig );

?

再來查看一下日志：

[{"applyType": "INJURE","address": "","accountName": "XXX","injuryType": "DISABILITY","receiveOtherMoney": 0,"costAmount": 12333,"description": "開發測試","bankName": "中行","treatmentList": [],"recordId": 1903011413540000,"fundingEmployeeCode": "3594","phoneNumber": "13344444444","createdBy": "3594","fundingEmployeeName": "XXX","happenDate": "2019-03-05","selfpayingAmount": 12333,"appliedBy": "00003594","familyLossAmount": 0,"applyDate": "2019-03-01","relationship": "本人","account": "513123124123123123","familyMemberName": "XXX"} ]

日期格式類型變成了我們想要的類型。

?

總結來說就是轉換json的時候自己自定義一個日期處理類實現JsonValueProcessor接口，在實現類中進行自定義轉化，

最后將其注入JsonConfig中，調用fromObject 時傳入JsonConfig自定義對象即可。

總結

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