java - Creating XML- input data from HashMap -
i have below data in hashmap:
map<string, string> data = new hashmap<string, string>(); data.put("a.b.c.c1.c11", "c11"); data.put("a.b.c.c1.c12", "c12"); data.put("a.b.c.c2.c21", "c21"); data.put("a.b.c.c2.c22", "c22"); data.put("a.b.c.c3.c31", "c31"); data.put("a.b.c.d", "d"); i have requiremrnt create xml in below format(expected output):
<a> <b> <c> <c1> <c11>c11</c11> <c12>c12</c12> </c1> <c2> <c21>c21</c21> <c22>c22</c22> </c2> <c3> <c3>c3</c3> </c3> <d>d</d> </c> </b> </a> below output code generated:
<a> <b> <c> <d> <c1> <c11> <c12> <c2> <c21> <c22> <c3> <c31/> </c3> </c22> </c21> </c2> </c12> </c11> </c1> </d> </c> </b> </a> code(dirty) wrote:
public class dynamicxml3 { public static boolean isfirstelemnt=true; static element element = null; public static element mainroot =null; public static void main(string args[]) { try { documentbuilderfactory docfactory = documentbuilderfactory.newinstance(); documentbuilder builder = docfactory.newdocumentbuilder(); document document = builder.newdocument(); string root,a1="a1"; map<string, string> data = new hashmap<string, string>(); data.put("a.b.c.c1.c11", "c11"); data.put("a.b.c.c1.c12", "c12"); data.put("a.b.c.c2.c21", "c21"); data.put("a.b.c.c2.c22", "c22"); data.put("a.b.c.c3.c31", "c31"); data.put("a.b.c.c.d", "d"); data = new treemap<string, string>(data); set set1 = data.entryset(); iterator i1 = set1.iterator(); while(i1.hasnext()) { map.entry me1 = (map.entry)i1.next(); system.out.println(me1.getkey() + ": "); //system.out.println(me1.getvalue()); //create buddy xml string key= me1.getkey()+""; string[] buddyxml= key.split("\\."); nodelist rootelementlist = document.getelementsbytagname(buddyxml[0]); if(!(rootelementlist.getlength()>0)){ mainroot = document.createelement(buddyxml[0]); document.appendchild(mainroot); system.out.println("root created\n"); } for(int i=0; i<buddyxml.length; i++){ system.out.println("value: "+buddyxml[i]); nodelist elementlist = document.getelementsbytagname(buddyxml[i]); system.out.println("here "+elementlist.getlength()); system.out.println("creating node "+buddyxml[i]); if(!(elementlist.getlength()>0)){ system.out.println("creating node "+buddyxml[i] + " & main root: "+mainroot.getnodename()); element element =createnode(buddyxml[i], document, mainroot); mainroot = element; } } system.out.println(""); } transformerfactory tfactory = transformerfactory.newinstance(); transformer transformer = tfactory.newtransformer(); // add indentation outputs transformer.setoutputproperty(outputkeys.indent, "yes"); transformer.setoutputproperty("{http://xml.apache.org/xslt}indent-amount", "2"); domsource source = new domsource(document); streamresult result = new streamresult(new file("d://rc/buddycode.xml")); transformer.transform(source, result); } catch (exception e) { system.out.println("exception: "+e); } } public static void createelement(element elemnetname, document document, object data) { text text =document.createtextnode(data.tostring()); elemnetname.appendchild(text); } private static element createnode(string nodename, document document,element rootelement) { element node = document.createelement(nodename); rootelement.appendchild(node); return node; } } this not working expected, tried change other appraoch doesn't seems work, guide me on same.
note: data in hashmap may incease horizontally , vertically, means, @ run time can have number of node, requirement create generic code.prefered use domparser.
can try :
public class dynamicxml3 { private static final string separtor = "\\."; public static void main(string args[]) { try { documentbuilderfactory docfactory = documentbuilderfactory.newinstance(); documentbuilder builder = docfactory.newdocumentbuilder(); document document = builder.newdocument(); map<string, string> data = new hashmap<string, string>(); data.put("a.b.c.c1.c11", "c11"); data.put("a.b.c.c1.c12", "c12"); data.put("a.b.c.c2.c21", "c21"); data.put("a.b.c.c2.c22", "c22"); data.put("a.b.c.c3.c31", "c31"); data.put("a.b.c.c.d", "d"); iterator<entry<string, string>> = data.entryset().iterator(); while (it.hasnext()) { map.entry<string, string> pair = (map.entry<string, string>)it.next(); system.out.println(pair.getkey() + " = " + pair.getvalue()); appendelement(document, pair.getkey(), pair.getvalue()); it.remove(); } transformerfactory tfactory = transformerfactory.newinstance(); transformer transformer = tfactory.newtransformer(); transformer.setoutputproperty(outputkeys.indent, "yes"); transformer.setoutputproperty("{http://xml.apache.org/xslt}indent-amount", "2"); domsource source = new domsource(document); streamresult result = new streamresult(new file("c:/users/desktop/buddycode.xml")); transformer.transform(source, result); } catch (exception e) { system.out.println("exception: "+e); } } private static void appendelement(document document, string key, string value) { string[] splitedelements = key.split(separtor); (int = 0; < splitedelements.length; i++) { nodelist nlst = document.getelementsbytagname(splitedelements[i]); if(nlst == null || nlst.getlength() == 0) { if(i==0) { document.appendchild(document.createelement(splitedelements[i])); } else { (document.getelementsbytagname(splitedelements[i-1]).item(0)).appendchild(document.createelement(splitedelements[i])); } if(i==(splitedelements.length-1)) { (document.getelementsbytagname(splitedelements[i]).item(0)).appendchild(document.createtextnode(value)); } } } } }