Reputation: 189
I have a json string like this.
[
{
"_source": {
"name": "Jam Brong",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/fb7d3dcb505fba76262c0c6383d844ae.jpg",
"price": "2500",
"slug": "133-jam-brong",
"short_name": "Jam Brong"
}
},
{
"_source": {
"name": "Jam abcfdfjn",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/7bbd3d081dd03c442e4cb27321a7b50c.jpg",
"price": "10888",
"slug": "87-jam-abcfdfjn",
"short_name": "Jam abcfdfjn"
}
}
]
I need to remove "_source":{
so i can get a json string like this.
[
{
"name": "Jam Brong",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/fb7d3dcb505fba76262c0c6383d844ae.jpg",
"price": "2500",
"slug": "133-jam-brong",
"short_name": "Jam Brong"
},
{
"name": "Jam abcfdfjn",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/7bbd3d081dd03c442e4cb27321a7b50c.jpg",
"price": "10888",
"slug": "87-jam-abcfdfjn",
"short_name": "Jam abcfdfjn"
}
]
I tried to use replaceAll("("_source:{"),"");
This code will show me some error like number expected
.
I don't know how to use regex
for the string which contains _
and {
.
Before i think to use replaceAll
, i tried jackson
like this.
String responses ="";
ObjectNode node = new ObjectMapper().readValue(response.toString(), ObjectNode.class);
ProductList productListInstance = new ProductList();
List<Product> productList = new ArrayList<>();
try {
if(node.get("hits").get("hits").isArray()){
for (final JsonNode objNode : node.get("hits").get("hits")) {
Product products = new ObjectMapper().readValue(objNode.get("_source").toString(), Product.class);
productList.add(products);
}
productListInstance.setProductList(productList);
}
responses = productListInstance.toString();
}
catch (Exception ex){
responses = productListInstance.toString();
}
return responses;
actually the first json string was like this :
{
"hits": {
"hits": [
{
"_source": {
"name": "Jam Brong",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/fb7d3dcb505fba76262c0c6383d844ae.jpg",
"price": "2500",
"slug": "133-jam-brong",
"short_name": "Jam Brong"
}
},
{
"_source": {
"name": "Jam abcfdfjn",
"image": "https://asdf.sdf.com/asdf/image/upload/w_30,h_30,c_fill/product/7bbd3d081dd03c442e4cb27321a7b50c.jpg",
"price": "10888",
"slug": "87-jam-abcfdfjn",
"short_name": "Jam abcfdfjn"
}
}
]
}
}
Upvotes: 0
Views: 63
Reputation: 1154
You can use Jackson to achieve this. First, define a bean representing your data model.
public static class Source {
private String name;
private String image;
private String price;
private String slug;
private String shortName;
@JsonCreator
public Source(@JsonProperty("_source") Map<String, Object> rawJson) {
this.name = rawJson.get("name").toString();
this.image = rawJson.get("image").toString();
this.price = rawJson.get("price").toString();
this.slug = rawJson.get("slug").toString();
this.shortName = rawJson.get("short_name").toString();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getSlug() {
return slug;
}
public void setSlug(String slug) {
this.slug = slug;
}
public String getShortName() {
return shortName;
}
public void setShortName(String shortName) {
this.shortName = shortName;
}
}
Observe the @JsonCreator annotation on the constructor. Then write the code for serialization and deserialization:
final ObjectMapper mapper = new ObjectMapper();
Source[] sources = mapper.readValue(jsonStr, Source[].class);
String converted = mapper.writeValueAsString(sources);
System.out.println(converted);
Prints:
[
{
"name": "Jam Brong",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/fb7d3dcb505fba76262c0c6383d844ae.jpg",
"price": "2500",
"slug": "133-jam-brong",
"shortName": "Jam Brong"
},
{
"name": "Jam abcfdfjn",
"image": "https://asdf.asdf.com/asdf/image/upload/w_30,h_30,c_fill/product/7bbd3d081dd03c442e4cb27321a7b50c.jpg",
"price": "10888",
"slug": "87-jam-abcfdfjn",
"shortName": "Jam abcfdfjn"
}
]
Upvotes: 1