APP网络请求一般返回 json数据 如下:
{
"id":2200,
"status":1,
"member":2,
"usreid":2200,
"alias":"QQ 804031885",
"name":"张风英",
"sex":1,
"msg":"登录成功欢迎回来"
}
这种数据比较好处理 创建一个实体类 Module.class
public class Module {
private int id;
private int status;
private int member;
private int usreid;
private String alias;
private String name;
private int sex;
private String msg;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public int getMember() {
return member;
}
public void setMember(int member) {
this.member = member;
}
public int getUsreid() {
return usreid;
}
public void setUsreid(int usreid) {
this.usreid = usreid;
}
public String getAlias() {
return alias;
}
public void setAlias(String alias) {
this.alias = alias;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getSex() {
return sex;
}
public void setSex(int sex) {
this.sex = sex;
}
public String getMsg() {
return msg;
}
public void setMsg(String msg) {
this.msg = msg;
}
}
json转为实体类对像
Module module= new Gson().fromJson(json,Module.class);
这样就能得到我们需要的对像内容。
有的返回json多种数据格式 我们不可能每一种数据写一个请求的接口数据, 所以需要使用到具体的泛型类来处理数据了。 如下返回的JSON
{
"total":30,
"per_page":20,
"current_page":1,
"last_page":2,
"data":[
{
"id":42,
"title":"\u5348\u591cDj",
"tag":"\u5348\u591cDj",
"picture":"",
"url":"",
"type":0,
"status":1,
"datetime":"1623428508"
},
{
"id":40,
"title":"\u670b\u53cb\u7684\u9152 Dj - DJ\u821e\u66f2",
"tag":"DJ\u821e\u66f2",
"picture":"",
"url":"https:\/\/mp3.9ku.com\/mp3\/470\/469902.mp3",
"type":0,
"status":1,
"datetime":"1623428513"
}
]
}
创建一个实体类misc.class
public class misc implements Serializable {
private String id;
private String title;
private String tag;
private String url;
private String picture;
private int type;
private int status;
private String datetime;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getTag() {
return tag;
}
public void setTag(String tag) {
this.tag = tag;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getPicture() {
return picture;
}
public void setPicture(String picture) {
this.picture = picture;
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
public String getDatetime() {
return datetime;
}
public void setDatetime(String datetime) {
this.datetime = datetime;
}
}
然后创建一个泛型实体类解析数据 BaseClass<T>
public class BaseClass<T>{
private int total;
private int per_page;
private int current_page;
private int last_page;
private List<T> data;
public int getTotal() {
return total;
}
public void setTotal(int total) {
this.total = total;
}
public int getPer_page() {
return per_page;
}
public void setPer_page(int per_page) {
this.per_page = per_page;
}
public int getCurrent_page() {
return current_page;
}
public void setCurrent_page(int current_page) {
this.current_page = current_page;
}
public int getLast_page() {
return last_page;
}
public void setLast_page(int last_page) {
this.last_page = last_page;
}
public List<T> getData() {
return data;
}
public void setData(List<T> data) {
this.data = data;
}
}
通过下面的代码轻松获取到我们所需要的对像
Type objectType = new TypeToken<BaseClass<misc>>(){}.getType();
BaseClass baseClass = new Gson().fromJson(date, objectType);
List<misc> data = baseClass.getData();
拿到对像数组了,下面就可以实现自己的业务逻辑了。