CODEWITHSUNDEEP
javaxml
wishman
wishman

Reputation: 774

Check if multiple XML tags exists using Java

Hi I am trying to read a XML document using Java. I want to check if all the tags exist before trying to get the content in it.

I have something like this;

String ToolVersion;

if (element.getElementsByTagName("ToolVersion").getLength() > 0) {
                    ToolVersion = element.getElementsByTagName("ToolVersion").item(0).getTextContent(); }

I have over 20 XML tags, is there a way to do this without having 20 "IF" conditions ?

Upvotes: 1

Views: 673

Answers (2)

Ashutosh Jha
Ashutosh Jha

Reputation: 1523

You can do it using jaxb. It provides marshaller and demarshaller which will help you in verifying whether tags exist or not.

Upvotes: 1

Shaq
Shaq

Reputation: 377

Some code to think about. 

String getData(Element e, String tagName){
    if (e.getElementsByTagName(tagName).getLength() > 0) {
        return e.getElementsByTagName(tagName).item(0).getTextContent(); 
    } else return null;
}


BODY

List<String> elementsList = Arrays.asList("ToolVersion", "ToolName", "SomethingElse");
Element e;
String tagData;

for(String tagName : elementsList){
    tagData = getData(e, tagName);
    //do something here
}

Upvotes: 2

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