Dom4jUtils.java

package com.vcredit.framework.utils;

import org.apache.commons.lang3.StringUtils;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class Dom4jUtils {
private static final Logger logger = LoggerFactory.getLogger(Dom4jUtils.class);

public static Document getDocument(String xml) {
Document document = null;
try {
document = DocumentHelper.parseText(xml);
if (document == null) {
throw new RuntimeException("document is null");
}
return document;
} catch (Exception e) {
logger.error("parse xml fail", e);
throw new RuntimeException("get document fail", e);
}
}

/**
* 解析XML获取Root节点
*
* @param xml
* @return Element
*/
public static Element getRoot(String xml) {
Document document = getDocument(xml);
return document.getRootElement();
}

/**
* 获取节点值
*
* @param root
* @param nodeName
* @return String
*/
public static String getValue(Element root, String nodeName) {
try {
if (root == null || StringUtils.isBlank(nodeName)) {
return null;
}
Element nodeElement = root.element(nodeName);
if (nodeElement == null) {
return null;
}
return nodeElement.getTextTrim();
} catch (Exception e) {
logger.error("get node(" + nodeName + ") value fail");
return null;
}
}

// public static void main(String[] args) throws IOException {
// Document doc = getDocument(FileUtils.readFileToString(new File("e:\\test\\result.xml"), "utf-8"));
// Element root = doc.getRootElement();
// List<Element> elementList = root.elements();
// for (Element element : elementList) {
// System.err.println("-------------------------->" + element.getName());
// System.err.println(element.getStringValue());
// }
// System.err.println("test");
// }
}