warwriter.java

一个用java开发的具有搜索功能的图书管理系统

package library;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.StringReader;

import org.jdom.Document;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

public class WarWriter {
	protected String xml = "<?xml version=\"1.0\" encoding=\"gb2312\" ?>"
			+ "<custinfo>" + "<account>75788228701</account>"
			+ "<yewu>ZDDHFF1023360</yewu>" + "<cert>440624493113441</cert>"
			+ "<name>黄日安</name>" + "<tel>88228701</tel>" + "</custinfo>";

	@SuppressWarnings("unused")
	private String directoryName=null;
	
	public static final int DIRECTORY=423;
	public static  final int FILE=23;

	public WarWriter(String directoryName) throws IOException {
		this.directoryName=directoryName;
		check(directoryName, DIRECTORY);
		System.out.println(directoryName);
	}
	
	public boolean write(String string,String fileName) throws JDOMException, IOException
	{
		String path=mergeName(fileName);
		System.out.println(path);
		check(path,FILE);
		FileOutputStream fs = new FileOutputStream(new File(path).getAbsolutePath());
		Document xmldoc = new SAXBuilder().build(new StringReader(string));
		new XMLOutputter().output(xmldoc, fs);
		fs.close();
		return true;
	}
	
	public boolean write(Document document,String fileName) throws IOException
	{
		String path=mergeName(fileName);
		System.out.println(path);
		check(path,FILE);
		FileOutputStream fs = new FileOutputStream(path);
		new XMLOutputter().output(document, fs);
		fs.close();
		return true;
	}
	
	public boolean writeDefault(String fileName) throws JDOMException, IOException
	{
		return write(xml,fileName);
	}
	private String mergeName(String fileName)
	{
		char c=directoryName.charAt(directoryName.length()-1);
		if(c=='\\'||c=='/')
		{
			return directoryName+fileName;
		}
		else
		{
			return directoryName+"\\"+fileName;
		}
	}
	public void check(String path,int type) throws IOException
	{
		File file=new File(path);
		if(file.exists()==false)
		{
			file.createNewFile();
			System.out.println("create");
		}
		else
		{
			if(type==FILE&&file.isDirectory())
			{
				throw new IOException("parameter error : not a file");
			}
			else
			{
				if(type==DIRECTORY&&file.isFile())
				{
					throw new IOException("parameter error : not a directory");
				}
				else
				{
					System.out.print((file.isFile()?"file ":"directory "));
					System.out.println("exist");
				}
			}
		}
	}
	/*public void checkFile(String fileName) throws IOException
	{
		File file=new File(fileName);
		if(file.exists()==false)
		{
			file.createNewFile();
			System.out.println("create");
		}
		else
		{
			if(file.isDirectory())
			{
				throw new IOException("the parameter of fileName is a directory");
			}
			else
			{
				System.out.println("exist");
			}
		}
	}
	public void checkDirectory(String directoryName) throws IOException
	{
		File file=new File(directoryName);
		if(file.exists()==false)
		{
			file.createNewFile();
			System.out.println("create");
		}
		else
		{
			if(file.isDirectory())
			{
				System.out.println("exist");
			}
			else
			{
				throw new IOException("the parameter of directoryName is not a directory");
			}
		}
	}*/
}