一、創建相應實體：

public class ExpressStatusVO {

private String ftime;
private String context;// 信息內容
private String time;

public String getFtime() {
return ftime;
}

public void setFtime(String ftime) {
this.ftime = ftime;
}

public String getContext() {
return context;
}

public void setContext(String context) {
this.context = context;
}

public String getTime() {

return time;
}

public void setTime(String time) {
this.time = time;
}

}

二、獲取Gson對象並進行轉換：

public Object getExpressDetails( ){

String strByJson = "[{"ftime":"2017-11-15 22:03:32","context":"客戶 簽收人: 牛春平 已簽收 感謝使用圓通速遞，期待再次為您服務","time":"2017-11-15 22:03:32"},

{"ftime":"2017-11-15 16:28:38","context":"北京市昌平區北七家公司(點擊查詢電話)居** 派件中 派件員電話15501296544","time":"2017-11-15 16:28:38"},

{"ftime":"2017-11-15 05:52:22","context":"北京市昌平區北七家公司 已收入","time":"2017-11-15 05:52:22"},

{"ftime":"2017-11-15 01:36:57","context":"北京轉運中心 已發出,下一站 北京市昌平區北七家","time":"2017-11-15 01:36:57"}]";

String strByJson = expressStatus.getData();
// Json to list
ExpressStatusVO[] array = new Gson().fromJson(strByJson, ExpressStatusVO[].class);
List<ExpressStatusVO> listVO = Arrays.asList(array);

Map<String, Object> map = new HashMap<String, Object>();

map.put("list", listVO);

return map;

}

返還的對象為：

 "list": [
        {
          "ftime": "2017-11-15 22:03:32",
          "context": "客戶 簽收人: 牛春平 已簽收  感謝使用圓通速遞，期待再次為您服務",
          "time": "2017-11-15 22:03:32"
        },
        {
          "ftime": "2017-11-15 16:28:38",
          "context": "北京市昌平區北七家公司(點擊查詢電話)居** 派件中 派件員電話15501296544",
          "time": "2017-11-15 16:28:38"
        },
        {
          "ftime": "2017-11-15 05:52:22",
          "context": "北京市昌平區北七家公司 已收入",
          "time": "2017-11-15 05:52:22"
        },
        {
          "ftime": "2017-11-15 01:36:57",
          "context": "北京轉運中心 已發出,下一站 北京市昌平區北七家",
          "time": "2017-11-15 01:36:57"
        }]
註意：前臺需要的是list集合時，需將其轉為Map對象進行返回。

java Gson轉為list集合