问题描述

无法建立xml文件 dos命令下运行出错

我按照书上的代码敲进eclipse，没报错，代码没问题，这个代码的功能是在同目录下建立一个与该java文件同名的xml文件，xml文件里输入了相关数据，但是运行后没反应，本地没生成该xml文件，浴室dos命令运行该java文件，javac编译通过，可是java时却“
F:eclipseWorkSpacexmlupdatesrcxmlupdate>java cratexml
错误: 找不到或无法加载主类 cratexml

F:eclipseWorkSpacexmlupdatesrcxmlupdate>“

报告无法加载主类，这是什么原因，网上说的classpath等配置之类的都没问题。以下是代码：

package xmlupdate;

import java.io.File;
import java.io.FileOutputStream;

import javax.xml.parsers.*;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

public class cratexml {
public static void main(String [] args){
org.w3c.dom.Document doc;
org.w3c.dom.Element booklist;
org.w3c.dom.Element book;

    try{        DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();        DocumentBuilder builder=dbf.newDocumentBuilder();        doc=builder.newDocument();        if(doc!=null){            booklist=doc.createElement(""图书列表"");            book=doc.createElement(""图书"");            booklist.appendChild(book);            org.w3c.dom.Element isbn = doc.createElement(""isbn"");            org.w3c.dom.Element name = doc.createElement(""name"");            org.w3c.dom.Element author = doc.createElement(""author"");            org.w3c.dom.Element price = doc.createElement(""price"");            org.w3c.dom.Element num = doc.createElement(""num"");            book.appendChild(name);            book.appendChild(author);            book.appendChild(price);            book.appendChild(num);            doc.appendChild(booklist);            TransformerFactory transFactory=TransformerFactory.newInstance();            Transformer transformer=transFactory.newTransformer();            DOMSource domSource=new DOMSource();            File file=new File(""book.xml"");            FileOutputStream out=new FileOutputStream(file);            StreamResult xmlResult=new StreamResult(out);            transformer.transform(domSource xmlResult);        }    }catch (Exception e){        e.printStackTrace();    }}

}

解决方案

http://zhidao.baidu.com/link?url=-dMCPfoasAe9A2Pof0zv1p1EeUonKPMcjjbpUxeym-CyJl5gjVILo-iTLzjB95x6jOzTy_6LYgOTuPKt3XIUF_kFrYRTkGTmzGq5HSS4Jgm