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 .
For json to xml use the following Jackson example:
final String str = "{\"name\":\"JSON\",\"integer\":1,\"double\":2.0,\"boolean\":true,\"nested\":{\"id\":42},\"array\":[1,2,3]}";
ObjectMapper jsonMapper = new ObjectMapper();
JsonNode node = jsonMapper.readValue(str, JsonNode.class);
XmlMapper xmlMapper = new XmlMapper();
xmlMapper.configure(SerializationFeature.INDENT_OUTPUT, true);
xmlMapper.configure(ToXmlGenerator.Feature.WRITE_XML_DECLARATION, true);
xmlMapper.configure(ToXmlGenerator.Feature.WRITE_XML_1_1, true);
StringWriter w = new StringWriter();
xmlMapper.writeValue(w, node);
System.out.println(w.toString());
Prints:
<?xml version='1.1' encoding='UTF-8'?>
<ObjectNode>
<name>JSON</name>
<integer>1</integer>
<double>2.0</double>
<boolean>true</boolean>
<nested>
<id>42</id>
</nested>
<array>1</array>
<array>2</array>
<array>3</array>
</ObjectNode>
To convert it back (xml to json) take a look at this answer https://stackoverflow.com/a/62468955/1485527 .
If you want to replace any node value you can do like this
JSONObject json = new JSONObject(str);
String xml = XML.toString(json);
xml.replace("old value", "new value");
If you have a valid dtd file for the xml then you can easily transform json to xml and xml to json using the eclipselink jar binary.
Refer this: http://www.cubicrace.com/2015/06/How-to-convert-XML-to-JSON-format.html
The article also has a sample project (including the supporting third party jars) as a zip file which can be downloaded for reference purpose.
Transforming with XSLT 3.0 is the only proper way to do it, as far as I can tell. It is guaranteed to produce valid XML, and a nice structure at that. https://www.w3.org/TR/xslt/#json
Underscore-java library has static method U.jsonToXml(jsonstring)
. I am the maintainer of the project. Live example
import com.github.underscore.lodash.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>
Source: Stackoverflow.com