运用Xmap将xml数据转换成javabean

xml和javabean 的转换有很多工具可以完成，比如常用的xstream，json-lib。。。

这里要了解的是Xmap这个在Nuxeo开源ECM开源框架下的org.nuxeo.common.xmap的jar包工具。

最新版本jar包可以在这里下载 https://maven.nuxeo.org 搜索org.nuxeo.common便可以找到 。说明文档可以到这里查看 http://community.nuxeo.com/api/nuxeo/5.1/javadoc/org/nuxeo/common/

 

通过注解就直接得到一个Java Bean。

下面贴一个参考的例子：

books.xml

<?xml version="1.0" encoding="UTF-8"?>
<books>
    <book no="1">
      <title>java是傻逼</title>
      <subjects>
        <string>java</string>
        <string>xml</string>
      </subjects>
      <price>10</price>
    </book>
    <book no="2">
      <title>c++程序设计</title>
      <subjects>
        <string>C++</string>
        <string>c</string>
      </subjects>
      <price>10</price>
    </book>
</books>

 

 

Books.java

package com.hand.entity;

import java.util.ArrayList;
import java.util.List;

import org.nuxeo.common.xmap.annotation.XNodeList;
import org.nuxeo.common.xmap.annotation.XObject;

@XObject("books")
public class Books {
	@XNodeList(value = "book", type = ArrayList.class, componentType = Book.class)
	private List<Book> book;

	public List<Book> getBook() {
		return book;
	}

	public void setBook(List<Book> book) {
		this.book = book;
	}
	
	public void addBook(Book b){
		if(book==null){
		book=new ArrayList< Book>();
		}
		book.add(b);
	}
}

 Book.java

package com.hand.entity;

import java.util.ArrayList;
import java.util.List;

import org.nuxeo.common.xmap.annotation.XNode;
import org.nuxeo.common.xmap.annotation.XNodeList;
import org.nuxeo.common.xmap.annotation.XObject;

@XObject
public class Book {
	@XNode("title")
	private String title;
	
	@XNode("@no")
	private String no;
	
	@XNodeList(value = "subject", type = ArrayList.class, componentType = String.class)
	private List<String> subjects;
	
	@XNode("price")
	private int price;
	
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public String getNo() {
		return no;
	}
	public void setNo(String no) {
		this.no = no;
	}
	public List<String> getSubjects() {
		return subjects;
	}
	public void setSubjects(List<String> subjects) {
		this.subjects = subjects;
	}
	public int getPrice() {
		return price;
	}
	public void setPrice(int price) {
		this.price = price;
	}
	
}

 

 Test.java

public class Test {
	public static void main(String[] args){
		Books books=new Books();
		
		Book book1=new Book();
		List< String> sj=new ArrayList< String>();
		sj.add("java");
		sj.add("xml");
		
		book1.setPrice(10);
		book1.setTitle("java是傻逼");
		book1.setSubjects(sj);
		book1.setNo("1");
		books.addBook(book1);
		
		Book book2=new Book();
		List< String> sj2=new ArrayList< String>();
		sj2.add("C++");
		sj2.add("c");
		
		book2.setPrice(10);
		book2.setTitle("c++程序设计");
		book2.setSubjects(sj2);
		book2.setNo("2");
		books.addBook(book2);
		
		XMap xmp = new XMap();
		xmp.register(Books.class);
		//xml转换javabean
                InputStream in = null;
		Object[] result;
		try {
			in = new FileInputStream(new File("xml文件路径"));
			result = (Object[]) xmp.loadAll(in);
			Books books=(Books)result[0];
			System.out.println(books.getBook().get(0).getTitle());
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (Exception e) {
			e.printStackTrace();
		}
                //javabean转换xml
                String xmlStr = null;
		try {
			xmlStr = xmp.toXML(books);
		} catch (ParserConfigurationException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
 }


附件里面有需要的jar包

评论

1 楼 Hai_Feng1108 2012-05-16