simple use of java development of dom4j

There are many ways for processing XML in Java, personal tasks dom4j or better quality. Here are these simple to use

First supplement on import

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

 

 

1. First we will normally get a string or xml file format according to various ways, for example:

static String strxml="<?xml version=\"1.0\" encoding=\"UTF-8\"?><rfc:ZFUN0022.Response xmlns:rfc=\"urn:sap-com:document:sap:rfc:functions\">"+
            "<E_RETURN>1</E_RETURN><E_RETURNTEXT>读取成功</E_RETURNTEXT><PO_ATTACHMENT></PO_ATTACHMENT><PO_HEADER><BUTXT></BUTXT><DRART></DRART><PO_ITEM><item><Name></Name></item><item><Name></Name></item><item><Name></Name></item><item><Name></Name></item></PO_ITEM></rfc:ZFUN0022.Response>";

2. The first step, parse the string or file, get root

DOC = the Document null ; 
 DOC = DocumentHelper.parseText (xml2); 
 the Element rootElt = doc.getRootElement (); // get the root section

3. The root is also an element to take elements and their value should be at the root

// get the next node element 
the Element po_item = rootElt.element ( "PO_ITEM"); 
// get the value of the element 
String strValue = rootElt.elementTextTrim ( "PO_ITEM")

4. is a list of some elements, such values ​​should be taken

        = Po_item.elements items List ( "Item" ); 

        for (= the Iterator Item items.iterator (); item.hasNext ();) { 
            the Element ELM = (the Element) item.next ();
             // do something ... ..
             // value of the processing cycle for each list element 
            System.out.println (elm.elementTextTrim ( "the Name" )); 
    
        }    

Simple basic types of data usage has been good enough.