/*
* Copyright 2010-2011 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.starflow.wf.engine.xml;
import java.io.IOException;
import java.io.StringWriter;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
/**
*
* @author libinsong1204@gmail.com
* @version 1.0
*/
public class XmlFormat {
/**
* 用dom4j格式化XML字符串为'pretty'格式.等价于getPrettyStiring(doc,"gb2312");
*
* @param xml
* 要格式化的XML字符串.
* @return 格式化以后的XML字符串.
* @see XmlFormat#getPrettyStiring(String, String)
*/
public static String getPrettyString(String xml) {
try {
return getPrettyString(xml, "GB2312");
} catch (DocumentException e) {
e.printStackTrace();
throw new RuntimeException("Pretty Xml 出现错误");
}
}
/**
* 用dom4j格式化XML字符串为'pretty'格式.
*
* @param xml
* 要格式化的XML字符串.
* @param encoding
* 编码方式.
* @return 格式化以后的XML字符串.如果输入为null或空字符串,则不做任何处理.
*/
public static String getPrettyString(String xml, String encoding)
throws DocumentException {
if (xml == null || xml.trim().length() < 1) {
return xml;
}
Document doc = DocumentHelper.parseText(xml);
return getPrettyString(doc, encoding);
}
/**
* 用dom4j的'pretty'格式格式化dom为字符串.
*
* @param doc
* 要格式化的dom.
* @param encoding
* 编码方式.
* @return 格式化以后的XML字符串.如果输入为null或空字符串,则不做任何处理.
*/
public static String getPrettyString(Document doc, String encoding) {
StringWriter writer = new StringWriter();
OutputFormat format = OutputFormat.createPrettyPrint();
if (encoding == null || "".equals(encoding.trim())) {
encoding = "GBK";
}
format.setEncoding(encoding);
XMLWriter xmlwriter = new XMLWriter(writer, format);
try {
xmlwriter.write(doc);
} catch (IOException e) {
e.printStackTrace();
}
return writer.toString();
}
}