java xml 格式化輸出

java 格式化字符串要用的dom4j1.6.1這個jar包

下面代碼分別是直接輸入字符串的格式化輸出和從文件中讀取的格式化輸出

import java.io.FileReader;
import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import org.dom4j.Document;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public static String formatXML_str(String inputXMLString) throws Exception
{
	SAXReader reader = new SAXReader();
	Document document = reader.read(new StringReader(inputXMLString));
	String requestXML = null;
	XMLWriter writer = null;
	if (document != null)
	{
		try
		{
			StringWriter stringWriter = new StringWriter();
			OutputFormat format = OutputFormat.createPrettyPrint();
			writer = new XMLWriter(stringWriter, format);
			writer.write(document);
			writer.flush();
			requestXML = stringWriter.getBuffer().toString();
		}
		finally
		{
			if (writer != null)
			{
				try
				{
					writer.close();
				}
				catch (IOException e)
				{
				}
			}
		}
	}
	return requestXML;
}
	
	
	

public static String formatXML_file(String inputXML_URL) throws Exception
{
	SAXReader reader = new SAXReader();
	Document document = reader.read(new FileReader(inputXML_URL));
	String requestXML = null;
	XMLWriter writer = null;
	if (document != null)
	{
		try
		{
			StringWriter stringWriter = new StringWriter();
			OutputFormat format = OutputFormat.createPrettyPrint();
	          	writer = new XMLWriter(stringWriter, format);
			writer.write(document);
			writer.flush();
			requestXML = stringWriter.getBuffer().toString();
		}
		finally
		{
			if (writer != null)
			{
				try
				{
					writer.close();
				}
	         		catch (IOException e)
				{
				}
			}
		}
	}
	return requestXML;
}