解析XML文件

将xml文件解析成String字符串，java程序如下：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.SAXReader;


public class XmlReader {

    public Document parse(URL url) throws DocumentException {
        SAXReader reader = new SAXReader();
        Document document = reader.read(url);
        return document;
    }


//这个是加载本地的xml（xml文件放在根目录下）
public static Document parse(String path){
        SAXReader reader = new SAXReader();
        Document document = null;
        try {
        	File xmlFile = new File(path);
        	document = reader.read(xmlFile);
        } catch (DocumentException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();            
        }
        return document;
}

public static String readToString(String fileName) {  
    String encoding = "UTF-8";  
    File file = new File(fileName);  
    Long filelength = file.length();  
    byte[] filecontent = new byte[filelength.intValue()];  
    try {  
        FileInputStream in = new FileInputStream(file);  
        in.read(filecontent);  
        in.close();  
    } catch (FileNotFoundException e) {  
        e.printStackTrace();  
    } catch (IOException e) {  
        e.printStackTrace();  
    }  
    try {  
        return new String(filecontent, encoding);  
    } catch (UnsupportedEncodingException e) {  
        System.err.println("The OS does not support " + encoding);  
        e.printStackTrace();  
        return null;  
    }  
}  
}