我试图解析一个JSON对象，其中一部分看起来像这样：
{
"status":{
"rcode":200,
"message":"OK"
},
"data":{
"0":{
"SubFranchiseID":"0",
"OutletID":"607",
"OutletName":"Spill ",
"BrandID":"403",
"Address":"J-349, JP Road, Opp. Apna Bazar, JP Rd, D.N.Nagar, Andheri West, Mumbai, Maharashtra, India",
"NeighbourhoodID":"1",
"CityID":"1",
"Email":null,
"Timings":"Everyday: 6 pm to 1:30 am.",
"CityRank":null,
"Latitude":"19.127473",
"Longitude":"72.832545",
"Pincode":null,
"Landmark":null,
"Streetname":null,
"BrandName":"Spill ",
"OutletURL":"https:\/\/plus.google.com\/111539701326240643109\/about?hl=en-US",
"NumCoupons":1,
"NeighbourhoodName":"Andheri West",
"PhoneNumber":"+91 22 2642 5895",
"CityName":"Mumbai",
"Distance":8205.2235,
"Categories":[
{
"OfflineCategoryID":"32",
"Name":"Continental",
"ParentCategoryID":"1",
"CategoryType":"Cuisine"
},
{
"OfflineCategoryID":"13",
"Name":"Bar and Restaurant",
"ParentCategoryID":"1",
"CategoryType":"TypeOfRestaurant"
},
{
"OfflineCategoryID":"17",
"Name":"Italian",
"ParentCategoryID":"1",
"CategoryType":"Cuisine"
},
{
"OfflineCategoryID":"1",
"Name":"Restaurant",
"ParentCategoryID":null,
"CategoryType":""
},
{
"OfflineCategoryID":"21",
"Name":"North Indian",
"ParentCategoryID":"1",
"CategoryType":"Cuisine"
}
],
"LogoURL":"http:\/\/www.google.in\/sitespecific\/media\/generated\/offlineimages\/logo_403.jpg",
"CoverURL":"http:\/\/www.google.in\/sitespecific\/media\/generated\/offlineimages\/cover_607.jpg"
},
"1 "{
"SubFranchiseID":"1",
"OutletID":"60",
"OutletName":"Bill ",
.
.
.
}
}
每个对象都有近35个Json对象和嵌套的JsonArrays。我试图获取这样的数据：
url = new URL(uri);
URLConnection connection = url.openConnection();
BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
reader.close();
json =sb.toString();
JSONObject sjson=json.getJSONObject("data");
Log.d("sjson values-->",sjson+"--");
**JSONObject ssjson=sjson.getJSONObject("0");**
现在我得到的每个值都是这样的：
String outletName = ssjson.getString("OutletName");
我的问题是有更好的方法（循环）通过所有对象（0,1，... 35）并分别获取每个单独对象的数据。
答案 0 :(得分：0)
示例json
{
"status": {
"rcode": "200",
"message": "Good, you got me!!!"
},
"data": [
{
"SubFranchiseID": "0",
"OutletID": "607",
"OutletName": "Spill",
},
{
"SubFranchiseID": "0",
"OutletID": "607",
"OutletName": "Spill"
}
]
}
使用getter和。用普通java类表示json setter方法
首先创建一个根类（对于根对象）
public class Root {
//For the status object
private Status status;
//For the array of data objects
private List<Data> data;
//create setters and getters for the two properties.
}
public class Status {
private String rcode;
//this maps to the rcode in the status object in json
private String message;
//create setters and getters for the two
}
public class Data {
private String SubFranchiseID;
private String OutletID;
private String OutletName;
//create setters and getters for these properties.
}
现在，让我们用gson（将json序列化到现成的类中）来实现魔力
reader.close();
json =sb.toString();
Root root = new Gson().fromJson(response, Root.class);
//get the rcode
if(root.getStatus().getrCode().equalsIgnoreCase("200"))
{
//print the data.
for(Data d : root.getData()) {
System.out.println(d.getSubFranchiseID()+"-"+d.getOutletID()+"-"+d.getOutletName());
}
}
使用gson的小注释。
1.) The property names inside the classes should match the property in the json or else use a `@SerializeName("propertyname")`.
2.) An array of objects would map to List<YourObject> , for eg : the data property in the json.
3.) You can have default value for your properties without creating getters and setters for them like
private boolean isJson = true;
答案 1 :(得分：0)
感谢您的帮助。我在“数据”里面有很多json对象 - ＆gt;在Json Array（“Categories”）之前，“0”喜欢“Outletname”，“OutletID”等。我为我的数据创建了一个模型类。现在我想使用我的json数据的Gson.Part来重写json对象数据
"0":{
"SubFranchiseID":"0",
"OutletID":"607",
"OutletName":"Spill ",
"BrandID":"403",
"Address":"J-349, JP Road, Opp. Apna Bazar, JP Rd, D.N.Nagar, Andheri West, Mumbai, Maharashtra, India",
"NeighbourhoodID":"1",
"CityID":"1",
"Email":null,
"Timings":"Everyday: 6 pm to 1:30 am.",
"CityRank":null,
"Latitude":"19.127473",
"Longitude":"72.832545",
"Pincode":null,
"Landmark":null,
"Streetname":null,
"BrandName":"Spill ",
"OutletURL":"https:\/\/plus.google.com\/111539701326240643109\/about?hl=en-US",
"NumCoupons":1,
"NeighbourhoodName":"Andheri West",
"PhoneNumber":"+91 22 2642 5895",
"CityName":"Mumbai",
"Distance":8205.2235,
"Categories":[
{
"OfflineCategoryID":"32",
"Name":"Continental",
"ParentCategoryID":"1",
"CategoryType":"Cuisine"
},
{
"OfflineCategoryID":"13",
"Name":"Bar and Restaurant",
"ParentCategoryID":"1",
"CategoryType":"TypeOfRestaurant"
},
{
"OfflineCategoryID":"17",
"Name":"Italian",
"ParentCategoryID":"1",
"CategoryType":"Cuisine"
},
{
"OfflineCategoryID":"1",
"Name":"Restaurant",
"ParentCategoryID":null,
"CategoryType":""
},
{
"OfflineCategoryID":"21",
"Name":"North Indian",
"ParentCategoryID":"1",
"CategoryType":"Cuisine"
}
],
"LogoURL":"http:\/\/www.google.in\/sitespecific\/media\/generated\/offlineimages\/logo_403.jpg",
"CoverURL":"http:\/\/www.google.in\/sitespecific\/media\/generated\/offlineimages\/cover_607.jpg"
},
}
我的java模型类：
/**
* SubFranchiseID : 0
* OutletID : 607
* OutletName : Spill
* BrandID : 403
* Address : J-349, JP Road, Opp. Apna Bazar, JP Rd, D.N.Nagar, Andheri West, Mumbai, Maharashtra, India
* NeighbourhoodID : 1
* CityID : 1
* Email : null
* Timings : Everyday: 6 pm to 1:30 am.
* CityRank : null
* Latitude : 19.127473
* Longitude : 72.832545
* Pincode : null
* Landmark : null
* Streetname : null
* BrandName : Spill
* OutletURL : https://plus.google.com/111539701326240643109/about?hl=en-US
* NumCoupons : 1
* NeighbourhoodName : Andheri West
* PhoneNumber : +91 22 2642 5895
* CityName : Mumbai
* Distance : 8205.2235
* Categories : [{"OfflineCategoryID":"32","Name":"Continental","ParentCategoryID":"1","CategoryType":"Cuisine"},{"OfflineCategoryID":"13","Name":"Bar and Restaurant","ParentCategoryID":"1","CategoryType":"TypeOfRestaurant"},{"OfflineCategoryID":"17","Name":"Italian","ParentCategoryID":"1","CategoryType":"Cuisine"},{"OfflineCategoryID":"1","Name":"Restaurant","ParentCategoryID":null,"CategoryType":""},{"OfflineCategoryID":"21","Name":"North Indian","ParentCategoryID":"1","CategoryType":"Cuisine"}]
* LogoURL : http://www.google.in/sitespecific/media/generated/offlineimages/logo_403.jpg
* CoverURL : http://www.google.in/sitespecific/media/generated/offlineimages/cover_607.jpg
*/
public static class OutletDetailsEntity {
private String SubFranchiseID;
private String OutletID;
private String OutletName;
private String BrandID;
private String Address;
private String NeighbourhoodID;
private String CityID;
private Object Email;
private String Timings;
private Object CityRank;
private String Latitude;
private String Longitude;
private Object Pincode;
private Object Landmark;
private Object Streetname;
private String BrandName;
private String OutletURL;
private int NumCoupons;
private String NeighbourhoodName;
private String PhoneNumber;
private String CityName;
private double Distance;
private String LogoURL;
private String CoverURL;
private List<CategoriesEntity> Categories;
public void setSubFranchiseID(String SubFranchiseID) {
this.SubFranchiseID = SubFranchiseID;
}
public void setOutletID(String OutletID) {
this.OutletID = OutletID;
}
public void setOutletName(String OutletName) {
this.OutletName = OutletName;
}
public void setBrandID(String BrandID) {
this.BrandID = BrandID;
}
public void setAddress(String Address) {
this.Address = Address;
}
public void setNeighbourhoodID(String NeighbourhoodID) {
this.NeighbourhoodID = NeighbourhoodID;
}
public void setCityID(String CityID) {
this.CityID = CityID;
}
public void setEmail(Object Email) {
this.Email = Email;
}
public void setTimings(String Timings) {
this.Timings = Timings;
}
public void setCityRank(Object CityRank) {
this.CityRank = CityRank;
}
public void setLatitude(String Latitude) {
this.Latitude = Latitude;
}
public void setLongitude(String Longitude) {
this.Longitude = Longitude;
}
public void setPincode(Object Pincode) {
this.Pincode = Pincode;
}
public void setLandmark(Object Landmark) {
this.Landmark = Landmark;
}
public void setStreetname(Object Streetname) {
this.Streetname = Streetname;
}
public void setBrandName(String BrandName) {
this.BrandName = BrandName;
}
public void setOutletURL(String OutletURL) {
this.OutletURL = OutletURL;
}
public void setNumCoupons(int NumCoupons) {
this.NumCoupons = NumCoupons;
}
public void setNeighbourhoodName(String NeighbourhoodName) {
this.NeighbourhoodName = NeighbourhoodName;
}
public void setPhoneNumber(String PhoneNumber) {
this.PhoneNumber = PhoneNumber;
}
public void setCityName(String CityName) {
this.CityName = CityName;
}
public void setDistance(double Distance) {
this.Distance = Distance;
}
public void setLogoURL(String LogoURL) {
this.LogoURL = LogoURL;
}
public void setCoverURL(String CoverURL) {
this.CoverURL = CoverURL;
}
public void setCategories(List<CategoriesEntity> Categories) {
this.Categories = Categories;
}
public String getSubFranchiseID() {
return SubFranchiseID;
}
public String getOutletID() {
return OutletID;
}
public String getOutletName() {
return OutletName;
}
public String getBrandID() {
return BrandID;
}
public String getAddress() {
return Address;
}
public String getNeighbourhoodID() {
return NeighbourhoodID;
}
public String getCityID() {
return CityID;
}
public Object getEmail() {
return Email;
}
public String getTimings() {
return Timings;
}
public Object getCityRank() {
return CityRank;
}
public String getLatitude() {
return Latitude;
}
public String getLongitude() {
return Longitude;
}
public Object getPincode() {
return Pincode;
}
public Object getLandmark() {
return Landmark;
}
public Object getStreetname() {
return Streetname;
}
public String getBrandName() {
return BrandName;
}
public String getOutletURL() {
return OutletURL;
}
public int getNumCoupons() {
return NumCoupons;
}
public String getNeighbourhoodName() {
return NeighbourhoodName;
}
public String getPhoneNumber() {
return PhoneNumber;
}
public String getCityName() {
return CityName;
}
public double getDistance() {
return Distance;
}
public String getLogoURL() {
return LogoURL;
}
public String getCoverURL() {
return CoverURL;
}