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需要一些jar，自己去down吧
/*
* created by intellij idea.
* user: administrator
* date: mar 26, 2002
* time: 1:24:56 pm
* to change template for new class use
* code style | class templates options (tools | ide options).
*/
/***** readxml.java **********************
*this is a javabean.
*this bean read a xml file from a url,and return a xmldom
*
***** created by xiao yusong 2001-11-30 ****
*/
package com.chinacountry.util;
import java.util.*;
import java.net.url;
import org.w3c.dom.*;
import javax.xml.parsers.*;
import java.io.*;
import org.apache.xml.serialize.outputformat;
import org.apache.xml.serialize.serializer;
import org.apache.xml.serialize.serializerfactory;
import org.apache.xml.serialize.xmlserializer;
import org.xml.sax.inputsource;
public class xmlutil implements java.io.serializable {
public xmlutil()
{
}
public static documentbuilder getbuilder() throws parserconfigurationexception
{
documentbuilder builder=documentbuilderfactory.newinstance().newdocumentbuilder();
return builder;
}
//get a document from given file
public static document getdocument(string path) throws exception
{
//bufferedreader filein=new bufferedreader(new filereader(path));
file f = new file(path);
documentbuilder builder=getbuilder();
document doc = builder.parse(f);
return doc;
}
//get a document from inputstream
public static document getdocument(inputstream in) throws exception
{
documentbuilder builder=getbuilder();
document doc = builder.parse(in);
return doc;
}
//create a empty document
public static document getnewdoc() throws exception
{
documentbuilder builder=getbuilder();
document doc = builder.newdocument();
return doc;
}
//create a document from given string
public static document getnewdoc(string xmlstr)
{
document doc = null;
try
{
stringreader sr = new stringreader(xmlstr);
inputsource isrc = new inputsource(sr);
documentbuilder builder=getbuilder();
doc = builder.parse(isrc);
}
catch (exception ex)
{
ex.printstacktrace();
}
return doc;
}
//save a document as a file at the given file path
public static void save(document doc, string filepath)
{
try
{
outputformat format = new outputformat(doc); //serialize dom
format.setencoding("gb2312");
stringwriter stringout = new stringwriter(); //writer will be a string
xmlserializer serial = new xmlserializer(stringout, format);
serial.asdomserializer(); // as a dom serializer
serial.serialize(doc.getdocumentelement());
string strxml = stringout.tostring(); //spit out dom as a string
string path = filepath;
writexml(strxml, path);
}
catch (exception e)
{
e.printstacktrace();
}
}
//save a string(xml) in the given file path
public static void writexml(string strxml, string path)
{
try
{
file f = new file(path);
printwriter out = new printwriter(new filewriter(f));
out.print(strxml + "\n");
out.close();
}
catch (ioexception e)
{
e.printstacktrace();
}
}
//format a document to string
public static string tostring(document doc)
{
string strxml = null;
try
{
outputformat format = new outputformat(doc); //serialize dom
format.setencoding("gb2312");
stringwriter stringout = new stringwriter(); //writer will be a string
xmlserializer serial = new xmlserializer(stringout, format);
serial.asdomserializer(); // as a dom serializer
serial.serialize(doc.getdocumentelement());
strxml = stringout.tostring(); //spit out dom as a string
}
catch (exception e)
{
e.printstacktrace();
}
return strxml;
}
//format a node to string
public static string tostring(node node, document doc)
{
string strxml = null;
try
{
outputformat format = new outputformat(doc); //serialize dom
format.setencoding("gb2312");
stringwriter stringout = new stringwriter(); //writer will be a string
xmlserializer serial = new xmlserializer(stringout, format);
serial.asdomserializer(); // as a dom serializer
serial.serialize((element) node);
strxml = stringout.tostring(); //spit out dom as a string
}
catch (exception e)
{
e.printstacktrace();
}
return strxml;
}
public static void main(string[] args) throws exception
{
string pathroot = "netrees.xml";
document doc,doc1;
try
{
doc = xmlutil.getdocument(pathroot);
doc1 = xmlutil.getdocument(pathroot);
if(doc == doc1)
{
system.out.println("they are same objects!");
}
else
{
system.out.println("they are different!");
outputformat format = new outputformat(doc); //serialize dom
format.setencoding("gb2312");
stringwriter stringout = new stringwriter(); //writer will be a string
xmlserializer serial = new xmlserializer(stringout, format);
serial.asdomserializer(); // as a dom serializer
serial.serialize(doc.getdocumentelement());
string strxml = stringout.tostring(); //spit out dom as a string
system.out.println(strxml);
}
}
catch (exception ex)
{
system.out.print("reading file\"" + pathroot + "\" error!");
ex.printstacktrace();
}
}
}
