Converting JSON to XML in Java

Question

I am new to json. I am having a program to generate xml from json object.

String str = "{'name':'JSON','integer':1,'double':2.0,'boolean':true,'nested':{'id':42},'array':[1,2,3]}";       JSON json = JSONSerializer.toJSON( str );       XMLSerializer xmlSerializer = new XMLSerializer();       xmlSerializer.setTypeHintsCompatibility( false );       String xml = xmlSerializer.write( json );       System.out.println(xml);  

the output is:

<?xml version="1.0" encoding="UTF-8"?> <o><array json_class="array"><e json_type="number">1</e><e json_type="number">2</e><e json_type="number">3</e></array><boolean json_type="boolean">true</boolean><double json_type="number">2.0</double><integer json_type="number">1</integer><name json_type="string">JSON</name><nested json_class="object"><id json_type="number">42</id></nested></o> 

my biggest problem is how to write my own attributes instead of json_type="number" and also writing my own sub elements like .

Answer 1

Use the (excellent) JSON-Java library from json.org then

JSONObject json = new JSONObject(str); String xml = XML.toString(json); 

toString can take a second argument to provide the name of the XML root node.

This library is also able to convert XML to JSON using XML.toJSONObject(java.lang.String string)

Check the Javadoc

Link to the the github repository

POM

<dependency>     <groupId>org.json</groupId>     <artifactId>json</artifactId>     <version>20160212</version> </dependency> 

original post updated with new links

Answer 2

Underscore-java library has static method U.jsonToXml(jsonstring). Live example

import com.github.underscore.U;  public class MyClass {     public static void main(String args[]) {         String json = "{\"name\":\"JSON\",\"integer\":1,\"double\":2.0,\"boolean\":true,\"nested\":{\"id\":42},\"array\":[1,2,3]}";           System.out.println(json);          String xml = U.jsonToXml(json);           System.out.println(xml);      } } 

Output:

{"name":"JSON","integer":1,"double":2.0,"boolean":true,"nested":{"id":42},"array":[1,2,3]} <?xml version="1.0" encoding="UTF-8"?> <root>   <name>JSON</name>   <integer number="true">1</integer>   <double number="true">2.0</double>   <boolean boolean="true">true</boolean>   <nested>     <id number="true">42</id>   </nested>   <array number="true">1</array>   <array number="true">2</array>   <array number="true">3</array> </root>