java 由bean构建XML

DomBuilding.java

import org.apache.xalan.serialize.SerializerToXML;  
import org.apache.xalan.templates.OutputProperties;  
 
import org.w3c.dom.Document;  
import org.w3c.dom.Element;  
import java.io.File;  
import java.io.StringWriter;  
import java.util.Properties;  
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 DomBuilding  
{  
 
    static Document document;  
 
    public DomBuilding()  
    {  
    }  
 
    public Element addElement(Document document, Element parent,  
            String elementname) throws Exception  
    {  
        Element temp = document.createElement(elementname);  
        parent.appendChild(temp);  
        return temp;  
    }  
 
    public Document newDom() throws Exception  
    {  
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();  
        DocumentBuilder builder = factory.newDocumentBuilder();  
        document = builder.newDocument();  
        return document;  
    }  
 
    public void transformDomToXml(Document document, String FileName)  
            throws Exception  
    {  
        TransformerFactory tFactory = TransformerFactory.newInstance();  
        Transformer transformer = tFactory.newTransformer();  
        DOMSource source = new DOMSource(document);  
        StreamResult result = new StreamResult(new File(FileName));  
        transformer.transform(source, result);  
 
    }  
 
    public String transformDomToOutputStream(Document document)  
            throws Exception  
    {  
        StringWriter sw = new StringWriter();  
        String result = new String();  
        SerializerToXML serxml = new SerializerToXML();  
        serxml.setWriter(sw);  
        Properties properties = OutputProperties  
                .getDefaultMethodProperties("xml");  
 
        properties.setProperty("encoding", "GBK");    
        serxml.setOutputFormat(properties);  
        serxml.serialize(document);  
        serxml.flushWriter();  
        result = sw.toString();  
        return result;  
    }  
} 

 BookBean.java

public class BookBean {  
    private String name;  
    private String prise;  
    private String author;  
    private String press;  
 
    public String getName() {  
        return name;  
    }  
 
    public void setName(String name) {  
        this.name = name;  
    }  
 
    public String getPrise() {  
        return prise;  
    }  
 
    public void setPrise(String prise) {  
        this.prise = prise;  
    }  
 
    public String getAuthor() {  
        return author;  
    }  
 
    public void setAuthor(String author) {  
        this.author = author;  
    }  
 
    public String getPress() {  
        return press;  
    }  
 
    public void setPress(String press) {  
        this.press = press;  
    }  
} 

 构建类：

BeanTOXML.java

import org.w3c.dom.Document;  
import org.w3c.dom.Element;  
import org.w3c.dom.Text;  
 
 
public class BeanTOXML {  
 
    public String buildXML(BookBean bean) {  
        String returnXML = "";  
          
        if (bean != null) {  
            try {  
                Document document = null;  
                DomBuilding domBuilding = new DomBuilding();  
                document = domBuilding.newDom();  
                  
                //构建根节点  
                Element root = document.createElement("books");  
                document.appendChild(root);  
                Element bookEL = domBuilding.addElement(document, root, "book");  
                  
                if (bean.getName() != null) {  
                    Element name = domBuilding.addElement(document, bookEL,  
                            "name");  
                    Text idText = document.createTextNode(bean.getName());  
 
                    name.appendChild(idText);  
                }  
                if (bean.getPrise() != null) {  
                    Element prise = domBuilding.addElement(document, bookEL,  
                            "prise");  
                    Text idText = document.createTextNode(bean.getPrise());  
 
                    prise.appendChild(idText);  
                }  
                if (bean.getAuthor() != null) {  
                    Element author = domBuilding.addElement(document, bookEL,  
                            "author");  
                    Text idText = document.createTextNode(bean.getAuthor());  
 
                    author.appendChild(idText);  
                }  
                if (bean.getPress() != null) {  
                    Element press = domBuilding.addElement(document, bookEL,  
                            "press");  
                    Text idText = document.createTextNode(bean.getPress());  
 
                    press.appendChild(idText);  
                }  
                  
                //把生成的document转换成String形式  
                returnXML = domBuilding.transformDomToOutputStream(document);  
                  
            } catch (Exception e) {  
                System.out.println("要解析的bean为空！");  
            }  
        }  
        return returnXML;  
    }  
 
    public static void main(String[] args) {  
        BookBean bean = new BookBean();  
        bean.setName("bookName");  
        bean.setPrise("99");  
        bean.setAuthor("bookAuthor");  
        bean.setPress("bookPress");  
 
        String toXML = new BeanTOXML().buildXML(bean);  
          
        System.out.println(toXML);  
    }  
 
}  

 输出结果：

<?xml version="1.0" encoding="GBK" standalone="no"?> 
<books><book><name>bookName</name><prise>99</prise><author>bookAuthor</author><press>bookPress</press></book></books>