* @ projectName: AccountBooks
* @ packageName: com.yyt.accountbooks.model
* @ fileName: BillModel
* @ author: zheng
* @ createTime: 2023/1/11 17:32
* @ describe: 账本表对象
@Entity(tableName = "bills")
public
class
BillModel
{
* balance : 0.0
* createTime : 1660880757000
* id : 2
* income : 0.0
* name : 账本一
* params : {}
* pay : 0.0
* remark : 账本备注
* uid : 12
@PrimaryKey
private
int
id;
private
double
balance;
private
long
createTime;
private
double
income;
private
String name;
private
double
pay;
private
String remark;
private
int
uid;
public
double
getBalance
()
{
return
balance;
public
void
setBalance
(
double
balance)
{
this
.balance = balance;
public
long
getCreateTime
()
{
return
createTime;
public
void
setCreateTime
(
long
createTime)
{
this
.createTime = createTime;
public
int
getId
()
{
return
id;
public
void
setId
(
int
id)
{
this
.id = id;
public
double
getIncome
()
{
return
income;
public
void
setIncome
(
double
income)
{
this
.income = income;
public
String
getName
()
{
return
name;
public
void
setName
(String name)
{
this
.name = name;
public
double
getPay
()
{
return
pay;
public
void
setPay
(
double
pay)
{
this
.pay = pay;
public
String
getRemark
()
{
return
remark;
public
void
setRemark
(String remark)
{
this
.remark = remark;
public
int
getUid
()
{
return
uid;
public
void
setUid
(
int
uid)
{
this
.uid = uid;
@Override
public
String
toString
()
{
return
"BillModel{"
+
"balance="
+ balance +
", createTime="
+ createTime +
", id="
+ id +
", income="
+ income +
", name='"
+ name +
'\''
+
", pay="
+ pay +
", remark='"
+ remark +
'\''
+
", uid="
+ uid +
'}'
;
Json数据
因为getData()的类型是Object的，获得的是data后面部份的数组，一共有13个数组对象。
string:{"code":0,"data":[{"balance":0.00,"createTime":1660880757000,"id":2,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本备注","uid":12},
{"balance":0.00,"createTime":1673076697000,"id":4,"income":0.00,"name":"pppppp","params":{},"pay":0.00,"remark":"pppppp","uid":12},
{"balance":0.00,"createTime":1673077667000,"id":5,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673077687000,"id":6,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673077696000,"id":7,"income":0.00,"name":"坎坎坷坷看看","params":{},"pay":0.00,"remark":"坎坎坷坷看看","uid":12},
{"balance":0.00,"createTime":1673079793000,"id":8,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673080112000,"id":9,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673080305000,"id":10,"income":0.00,"name":"哈哈哈哈哈那就","params":{},"pay":0.00,"remark":"哈哈哈哈哈那就","uid":12},
{"balance":0.00,"createTime":1673080319000,"id":11,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673080812000,"id":12,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673082156000,"id":13,"income":0.00,"name":"账本一","params":{},"pay":0.00,"remark":"账本一","uid":12},
{"balance":0.00,"createTime":1673086473000,"id":14,"income":0.00,"name":"用英语","params":{},"pay":0.00,"remark":"探讨探讨","uid":12},
{"balance":0.00,"createTime":1673088234000,"id":15,"income":0.00,"name":"滚滚滚","params":{},"pay":0.00,"remark":"","uid":12}]}
Gson库解析
错误思路1
直接把Object类型的Json数据直接反序列化为实体类的数组对象。
BillModel[] billModels =gson.fromJson((responseModel.getData().toString())
,BillModel[].class);
解析直接错误，解都解不出来.....
至于为什么？
应该是Object类型的数据直接toString不行。
错误思路2
把Object类型的Json数据先序列化为Json再反序列化为List<Object>对象。
目前的思路：用List把每个对象分出来，再用for循环遍历Gson库解析对象的每个属性。先把这data后面这部分toJson序列化为Json对象，在反序列化为一组一组的List<Object>对象。简单来说就是用Gson库序列化一次和反序列化各一次。
List<Object> list= mGson.fromJson(mGson.toJson(responseModel.getData()),
List.class);
List<BillModel> billModelList=new ArrayList<>();
for(int i=0;i<list.size();i++){
BillModel model=mGson.fromJson(list.get(i),BillModel.class);
billModelList.add(model);
KLog.d(list.get(i)+"---------------------------");
我的思路结果本应该是这样的一组一组的。
{"balance":0.00,"createTime":1673076697000,
"id":4,"income":0.00,"name":"pppppp","params":{},
"pay":0.00,"remark":"pppppp","uid":12}
结果第二次反序列化打印数据的时候变成了下面这样一组一组！！！这样连Json格式都不是了，还怎么解析！！！
然后编译期间调用实体类的get方法可以，但是结果会出错甚至报错。
至于为什么？
应该是用List第一次解析为Obejct类型会把双引号给去掉，那么此时就不是Json格式了，就不能解析了。
{balance=0.0, createTime=1.660880757E12, id=2.0,
income=0.0, name=小明, params={}, pay=0.0, remark=备注,
uid=12.0}
所以我知道这个办法行不通了，得换一种方法。
可以看看用List怎么反序列化的，在我写的下方链接博客里面第四点。
用TypeToken来储存实体类的类型。
blog.csdn.net/qFAFAF/arti…
List<BillModel> list= mGson.fromJson(mGson.toJson(responseModel.getData()),
new TypeToken<List<BillModel>>(){}.getType());
和错误思路2的区别就是：
我直接转化为BillModel实体类，而不是Object类型的了。
先序列化一次，再进行一次反序列化即可，不需要第二次遍历每一项list进行反序列化。
if (BuildConfig.DEBUG) {
for(int i=0;i<list.size();i++){
KLog.d(list.get(i).getId()+"---------------------------");
此时get()方法也能成功获取到数据了。
而且一般整个app用一个Gson对象就行了，就只需要new一个Gson对象，放在全局变量去用就好了，避免资源浪费。
