java後台後台解決 json-lib封裝的時間

  • 2019 年 10 月 8 日
  • 筆記

1. Json-lib可以將Java對象很方便的轉成json格式的字元串

但是java裡面時間類型轉換成json數據就成這樣啦 "createTime":{"date":30,"day":3,"hours":15,"minutes":14,"month":3,"nanos":0,"seconds" :38,"time":1209539678000,"timezoneOffset":-480,"year":108}

2.解決方式如下

List<Dept> deptList = deptService.selectBypage(map);  int count = deptService.selectDept();  JSONArray ja = new JSONArray();  JsonConfig jf = new JsonConfig();  這種是時間戳Timestamp  jf.registerJsonValueProcessor(java.sql.Timestamp.class, new DateJsonValueProcessor("yyyy-MM-dd"));  還有一種是Date  jf.registerJsonValueProcessor(java.util.Date.class, new DateJsonValueProcessor("yyyy-MM-dd"));  JSONObject jsonObject = new JSONObject();  jsonObject.put("count", count);  jsonObject.put("code", 0);  jsonObject.put("msg", "null");  jsonObject.put("data", ja.fromObject(deptList, jf));  注意：以上這種返回格式是使用layui所返回的json參數類型  DateJsonValueProcessor是實現了一個JsonValueProcessor介面  新建DateJsonValueProcessor實現json-lib中的sonValueProcessor介面  package com.siyuan.service.Impl;  import java.text.SimpleDateFormat;  import net.sf.json.JsonConfig;  import net.sf.json.processors.JsonValueProcessor;  public class DateJsonValueProcessor implements JsonValueProcessor {  private String format;      public DateJsonValueProcessor(String format){          this.format = format;      }      public Object processArrayValue(Object value, JsonConfig jsonConfig)      {          return null;      }      public Object processObjectValue(String key, Object value, JsonConfig jsonConfig)      {          if(value == null)          {              return "";          }          if(value instanceof java.sql.Timestamp)          {              String str = new SimpleDateFormat(format).format((java.sql.Timestamp)value);              return str;          }          if (value instanceof java.util.Date)          {              String str = new SimpleDateFormat(format).format((java.util.Date) value);              return str;          }          return value.toString();      }  }

以上程式碼是時間類型被處理格式化

這樣就解決了以上問題，運行結果為

{"count":11,"code":0,"msg":null,"data":[{"deleteflg":0,"deptid":1,"deptname":"人事部","inserttime":"2018-02-02","updatetime":"2018-02-02"},{"deleteflg":0,"deptid":2,"deptname":"採購部","inserttime":"2018-02-02","updatetime":"2018-02-02"},{"deleteflg":0,"deptid":3,"deptname":"技術部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":4,"deptname":"調研部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":5,"deptname":"運維部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":6,"deptname":"總裁部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":7,"deptname":"秘書部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":8,"deptname":"經理部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":9,"deptname":"財務部","inserttime":"2018-02-03","updatetime":"2018-02-03"},{"deleteflg":0,"deptid":10,"deptname":"科研部","inserttime":"2018-02-03","updatetime":"2018-02-03"}]}

希望能夠幫助到大家

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