java 生成xml并转为字符串的方法

import javax. xml .parsers.documentbuilderfactory;

import javax.xml.parsers.documentbuilder;

import javax.xml.transform.transformerfactory;

import javax.xml.transform.outputkeys;

import javax.xml.transform.transformer;

import javax.xml.transform.dom.domsource;

import javax.xml.transform.stream.streamresult;

import org.apache.commons.io.output.bytearrayoutputstream;

import org.w3c.dom.document;

import org.w3c.dom.element;

public class test {

     private string createxml() {

         string xmlstring = "" ;

         documentbuilderfactory factory = documentbuilderfactory.newinstance();

         try {

             documentbuilder builder = factory.newdocumentbuilder();

             document document = builder.newdocument();

             document.setxmlstandalone( true );

             element iteminfo = document.createelement( "iteminfo" );

             document.appendchild(iteminfo);

             element itemstatistics = document.createelement( "itemstatistics" );

             itemstatistics.settextcontent( "商品统计" );

             iteminfo.appendchild(itemstatistics);

             element items = document.createelement( "items" );

             iteminfo.appendchild(items);

             // 此处可以循环添加

             element item = document.createelement( "item" );

             items.appendchild(item);

             element itemname = document.createelement( "itemname" );

             itemname.settextcontent( "iphone" );

             item.appendchild(itemname);

             element itemnum = document.createelement( "itemnum" );

             itemnum.settextcontent( "3" );

             item.appendchild(itemnum);

             element itemvalue = document.createelement( "itemvalue" );

             itemvalue.settextcontent( "1000000" );

             item.appendchild(itemvalue);

             element remark = document.createelement( "remark" );

             remark.settextcontent( "配送" );

             iteminfo.appendchild(remark);

             transformerfactory transfactory = transformerfactory.newinstance();

             transformer transformer = transfactory.newtransformer();

             transformer.setoutputproperty(outputkeys.indent, "yes" );

             domsource domsource = new domsource(document);

             // xml transform string

             bytearrayoutputstream bos = new bytearrayoutputstream();

             transformer.transform(domsource, new streamresult(bos));

             xmlstring = bos.tostring();

             system.out.println(xmlstring);

         } catch (exception e) {

             e.printstacktrace();

         }

         return xmlstring;

     }

}

<?xml version= "1.0" encoding= "utf-8" ?>

<iteminfo>

<itemstatistics>商品统计</itemstatistics>

<items>

<item>

<itemname>iphone</itemname>

<itemnum> 3 </itemnum>

<itemvalue> 1000000 </itemvalue>

</item>

</items>

<remark>配送</remark>

</iteminfo>

<?xml version= "1.0" encoding= "utf-8" ?>

xmlstring.substring( 38 )