如何从android中的json解析可选值
[英]how to parse optional values from json in android
问题描述
I have made an android application,In that i want to parse some data from the api,I have some optional values in that api,Sample is as below: JSON 
我做了一个android应用程序，因为我想从api解析一些数据，我在该api中有一些可选值，示例如下： JSON
{
status: "success",
product_category: {
name: "Glossy Mannequins",
id: "28"
},
product: [
{
name: "3SC1G",
id: "128",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372498306.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1400929422.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
product_options: [
{
option_name: "Color",
option_value: "White"
},
{
option_name: "Height",
option_value: "130 cm"
}
]
},
{
name: "3S14FG",
id: "127",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372497779.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1400929548.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S13FG",
id: "126",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372496302.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176927.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S12MG",
id: "125",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372496174.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176821.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S3FG",
id: "124",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372306217.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176740.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S9FG",
id: "123",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372305991.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176646.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S5MG",
id: "117",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372304662.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176538.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S8MG",
id: "116",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372304573.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176461.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "3S10MG",
id: "115",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1372304511.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401176396.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "M12G",
id: "99",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368463047.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401180875.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "M10G",
id: "98",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368462841.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401180931.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "M8G",
id: "97",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368462735.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401180955.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "M5G",
id: "96",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368462593.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401181016.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "M1G",
id: "95",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368452614.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401180978.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "F13GB",
id: "93",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368451347.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401181053.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "F9GB",
id: "92",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368450963.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401181078.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "F3GB",
id: "91",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368450873.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401181131.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
},
{
name: "C1G",
id: "90",
thumb_image: "http://3smannequins.com/uploads/product_image/mediumthumb1368450534.jpg",
big_image: "http://3smannequins.com/uploads/product_image/1401181181.jpg",
product_subcategory: {
name: "Glossy Mannequins",
id: "28"
},
msg_option: "not_available"
}
]
}
Inthe above JSON i want to parse the values of "product options"...which is not in all the objects,I have tried "optJSONArray" but not getting solution ,I have tried as below,Which is not working,Please help me to solve this.. main.jaa 在上面的JSON中，我想解析“产品选项”的值...这不是在所有对象中，我已经尝试过“ optJSONArray”但没有得到解决方案，我已经尝试过如下操作，这不起作用，请帮帮我解决这个问题.. main.jaa
try {
if (jsonStr != null) {
jsonObj = new JSONObject(jsonStr);
if (jsonObj.has("product")) {
subCategories = jsonObj.getJSONArray("product");
if (subCategories != null
&& subCategories.length() != 0) {
// looping through All Contacts
for (int i = 0; i < subCategories.length(); i++) {
JSONObject c = subCategories.getJSONObject(i);
sub_id = c.getString("id");
sub_name = c.getString("name");
thumb_image = c.getString("thumb_image");
big_image = c.getString("big_image");
resultArray.add(big_image);
if (c.has("product_options")) {
JSONArray product_optionsarray = c
.optJSONArray("product_options");
for (int j = 0; j < product_optionsarray
.length(); j++) {
JSONObject c1 = product_optionsarray
.optJSONObject(j);
if (c1.has("option_name"))
option_name = c1
.optString("option_name");
System.out
.println("::::::::::::::::Option name::::::"
+ option_name);
if (c1.has("option_value"))
option_value = c1
.optString("option_value");
System.out
.println("::::::::::::::::Optionvalue::::::"
+ option_value);
}
}
HashMap<String, String> subCategory = new HashMap<String, String>();
subCategory.put(Const.TAG_CATEGORY_ID, sub_id);
subCategory.put(Const.TAG_CATAEGORY_NAME,
sub_name);
subCategory.put(Const.TAG_THUMB_IMG,
thumb_image);
subCategory.put(Const.TAG_BIG_IMG, big_image);
subCategory.put(Const.TAG_OPTION_NAME,
option_name);
subCategory.put(Const.TAG_OPTION_VALUE,
option_value);
subCatList.add(subCategory);
}
}
}
2 个解决方案
解决方案1
1 已采纳 2014-06-14 11:29:03
Try this way,hope this will help you to solve your problem.
String jsonStr = "{status:\"success\",product_category:{name:\"Glossy Mannequins\",id:\"28\"},product:[{name:\"3SC1G\",id:\"128\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372498306.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1400929422.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},product_options:[{option_name:\"Color\",option_value:\"White\"},{option_name:\"Height\",option_value:\"130 cm\"}]},{name:\"3S14FG\",id:\"127\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372497779.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1400929548.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S13FG\",id:\"126\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372496302.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176927.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S12MG\",id:\"125\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372496174.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176821.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S3FG\",id:\"124\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372306217.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176740.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S9FG\",id:\"123\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372305991.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176646.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S5MG\",id:\"117\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372304662.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176538.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S8MG\",id:\"116\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372304573.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176461.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"3S10MG\",id:\"115\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1372304511.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401176396.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"M12G\",id:\"99\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368463047.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401180875.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"M10G\",id:\"98\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368462841.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401180931.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"M8G\",id:\"97\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368462735.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401180955.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"M5G\",id:\"96\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368462593.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401181016.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"M1G\",id:\"95\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368452614.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401180978.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"F13GB\",id:\"93\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368451347.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401181053.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"F9GB\",id:\"92\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368450963.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401181078.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"F3GB\",id:\"91\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368450873.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401181131.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"},{name:\"C1G\",id:\"90\",thumb_image:\"http://3smannequins.com/uploads/product_image/mediumthumb1368450534.jpg\",big_image:\"http://3smannequins.com/uploads/product_image/1401181181.jpg\",product_subcategory:{name:\"Glossy Mannequins\",id:\"28\"},msg_option:\"not_available\"}]}";
JSONObject jsonObj;
JSONArray subCategories;
ArrayList<HashMap<String,String>> subCatList = new ArrayList<HashMap<String, String>>();
ArrayList<String> resultArray = new ArrayList<String>();
try{
if (jsonStr != null && jsonStr.length()>0) {
jsonObj = new JSONObject(jsonStr);
if (jsonObj.has("product")) {
subCategories = jsonObj.getJSONArray("product");
if (subCategories != null && subCategories.length() > 0) {
for (int i = 0; i < subCategories.length(); i++) {
String sub_id;
String sub_name;
String thumb_image;
String big_image;
String option_name="";
String option_value="";
sub_id = subCategories.getJSONObject(i).getString("id");
sub_name = subCategories.getJSONObject(i).getString("name");
thumb_image = subCategories.getJSONObject(i).getString("thumb_image");
big_image = subCategories.getJSONObject(i).getString("big_image");
resultArray.add(big_image);
if (subCategories.getJSONObject(i).has("product_options")) {
JSONArray product_optionsarray = subCategories.getJSONObject(i).getJSONArray("product_options");
for (int j = 0; j < product_optionsarray.length(); j++) {
option_name = product_optionsarray.getJSONObject(j).optString("option_name");
option_value = product_optionsarray.getJSONObject(j).optString("option_value");
}
}
HashMap<String, String> subCategory = new HashMap<String, String>();
subCategory.put("ID", sub_id);
subCategory.put("NAME",sub_name);
subCategory.put("THUMB_IMG",thumb_image);
subCategory.put("BIG_IMG", big_image);
subCategory.put("OPTION_NAME",option_name);
subCategory.put("OPTION_VALUE",option_value);
subCatList.add(subCategory);
}
}
}
}
}catch (Throwable e){
e.printStackTrace();
}
System.out.println("Size of subCatList : "+subCatList.size());
System.out.println("Size of resultArray : "+resultArray.size());
for (HashMap<String,String> row : subCatList){
System.out.println("ID : "+row.get("ID"));
System.out.println("NAME : "+row.get("NAME"));
System.out.println("THUMB_IMG : "+row.get("THUMB_IMG"));
System.out.println("BIG_IMG : "+row.get("BIG_IMG"));
System.out.println("OPTION_NAME : "+row.get("OPTION_NAME"));
System.out.println("OPTION_VALUE : "+row.get("OPTION_VALUE"));
}
解决方案2
0 2014-06-14 11:13:58
since you already check if jsonOject has "products_options" using if, try removing optJSONArray and just use JSONArray like this: 由于您已经使用if检查jsonOject是否具有“ products_options”，请尝试删除optJSONArray并仅使用JSONArray，如下所示：
if (c.has("product_options")) {
JSONArray product_optionsarray = c.JSONArray("product_options");
// remaining code
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