简单XML读写工具类
更多请参考：自定义简单XML的读与存，便捷工具类
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import java.io.File;import java.io.FileWriter;import java.io.StringWriter;import org.dom4j.Document;import org.dom4j.DocumentException;import org.dom4j.DocumentHelper;import org.dom4j.Element;import org.dom4j.io.OutputFormat;import org.dom4j.io.SAXReader;import org.dom4j.io.XMLWriter;/** * XML工具类 * */public class XMLUtils {/** * 返回格式化的XML字段串 * * @param document * 要格式化的文档 * @param encoding * 使用的编码,如果为null刚使用默认编码(gb2312) * @return 格式化的XML字段串 */public static String toXMLString(Document document, String encoding) {if (encoding == null) {encoding = "gb2312";}StringWriter writer = new StringWriter();OutputFormat format = OutputFormat.createPrettyPrint();format.setEncoding("gb2312");XMLWriter xmlwriter = new XMLWriter(writer, format);try {xmlwriter.write(document);} catch (Exception e) {e.printStackTrace();}return writer.toString();}/** * 返回格式化的XML字段串 * * @param element * 要格式化的节点元素 * @param encoding * 使用的编码,如果为null刚使用默认编码(gb2312) * @return 格式化的XML字段串 */public static String toXMLString(Element element, String encoding) {if (encoding == null) {encoding = "gb2312";}StringWriter writer = new StringWriter();OutputFormat format = OutputFormat.createPrettyPrint();format.setEncoding(encoding);XMLWriter xmlwriter = new XMLWriter(writer, format);try {xmlwriter.write(element);} catch (Exception e) {e.printStackTrace();}return writer.toString();}/** * 格式化文档并输出到文件 * * @param document * 要输出的文档 * @param filename * XML文件名 * @param encoding * 使用的编码,如果为null刚使用默认编码(gb2312) * @return true or false */public static boolean toXMLFile(Document document, String filename,String encoding) {if (encoding == null) {encoding = "gb2312";}boolean returnValue = false;try {XMLWriter output = null;/** 格式化输出,类型IE浏览一样 */OutputFormat format = OutputFormat.createPrettyPrint();/** 指定XML字符集编码 */format.setEncoding(encoding);output = new XMLWriter(new FileWriter(new File(filename)), format);output.write(document);output.close();/** 执行成功,需返回1 */returnValue = true;} catch (Exception ex) {ex.printStackTrace();returnValue = false;}return returnValue;}/** * 格式化XML文件并保存 * * @param srcFileName * 源XML文件 * @param desFileName * 格式化后的XML文件,如果为null,则使用srcFileName * @param encoding * 使用的编码,如果为null刚使用默认编码(gb2312) * @return true or false */public static boolean toXMLFile(String srcFileName, String desFileName,String encoding) {if (encoding == null) {encoding = "gb2312";}if (desFileName == null) {desFileName = srcFileName;}boolean returnValue = false;try {SAXReader saxReader = new SAXReader();Document document = saxReader.read(new File(srcFileName));XMLWriter output = null;/** 格式化输出,类型IE浏览一样 */OutputFormat format = OutputFormat.createPrettyPrint();/** 指定XML字符集编码 */format.setEncoding(encoding);output = new XMLWriter(new FileWriter(new File(desFileName)),format);output.write(document);output.close();/** 执行成功,需返回1 */returnValue = true;} catch (Exception ex) {ex.printStackTrace();returnValue = false;}return returnValue;}/** * 从读取XML文件 * * @param fileName * @return Document对象 */public static Document read(String fileName) {SAXReader reader = new SAXReader();Document document = null;try {document = reader.read(new File(fileName));} catch (DocumentException e) {// TODO Auto-generated catch blocke.printStackTrace();}return document;}/** * 从XML字符串转换到document * * @param xmlStr * XML字符串 * @return Document */public static Document parseText(String xmlStr) {Document document = null;try {document = DocumentHelper.parseText(xmlStr);} catch (DocumentException e) {// TODO Auto-generated catch blocke.printStackTrace();}return document;}}