java 生成xml并转为字符串

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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 StringByteArrayOutputStream bos = new ByteArrayOutputStream();transformer.transform(domSource, new StreamResult(bos));xmlString = bos.toString();System.out.println(xmlString);} catch (Exception e) {e.printStackTrace();}return xmlString;}}

结果：

<?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>

去掉头文件<?xml version="1.0" encoding="utf-8"?>

的办法暂时只能想到：

xmlString.substring(38)

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