xml和java bean的转换

最近项目中用到了xml和java bean的转换
用到xml的时候我们需要遍历解析。。。然后将解析的值放入声明好的java bean，过程很痛苦，结果很美好
我们能不能直接从xml转化到java bean呢，或者直接成java bean转化到xml呢？
答案是OK的
使用jar包：org.heibo.xbean

写个小例子
XML

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

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

java
xml
10



C++
c
10

Books类

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

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

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

    public List getBook() {
        return book;
    }

    public void setBook(List book) {
        this.book = book;
    }

    public void addBook(Book b){
        if(book==null){
            book=new ArrayList();
        }
        book.add(b);
    }
}

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

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

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

    public List getBook() {
        return book;
    }

    public void setBook(List book) {
        this.book = book;
    }

    public void addBook(Book b){
        if(book==null){
            book=new ArrayList();
        }
        book.add(b);
    }
}

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

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

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

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

Book类

 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 subjects;

    @XNode("price")
    private int   price;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public List getSubjects() {
        return subjects;
    }

    public void setSubjects(List subjects) {
        this.subjects = subjects;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public String getNo() {
        return no;
    }

    public void setNo(String no) {
        this.no = no;
    }
}

 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 subjects;

    @XNode("price")
    private int   price;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public List getSubjects() {
        return subjects;
    }

    public void setSubjects(List subjects) {
        this.subjects = subjects;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public String getNo() {
        return no;
    }

    public void setNo(String no) {
        this.no = no;
    }
}

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 subjects;
    
    @XNode("price")
    private int   price;

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public List getSubjects() {
        return subjects;
    }

    public void setSubjects(List subjects) {
        this.subjects = subjects;
    }

    public int getPrice() {
        return price;
    }

    public void setPrice(int price) {
        this.price = price;
    }

    public String getNo() {
        return no;
    }

    public void setNo(String no) {
        this.no = no;
    }
}

测试类：

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

 import org.nuxeo.common.xmap.XMap;


 public class XmapTest {
    public static void main(String[] args) {
        try {
            //声明一组书的根节点
            Books books=new Books();

            //声明一本书
            Book book=new Book();
            //书的类型
            List sj=new ArrayList();
            sj.add("java");
            sj.add("xml");
            //设置书节点的属性
            book.setPrice(10);
            book.setTitle("java是傻逼");
            book.setSubjects(sj);
            book.setNo("1");

            //将书节点添加到跟节点
            books.addBook(book);

          //声明一本书
            Book book2=new Book();
            //书的类型
            List sj2=new ArrayList();
            sj2.add("C++");
            sj2.add("c");
            //设置书节点的属性
            book2.setPrice(10);
            book2.setTitle("c++程序设计");
            book2.setSubjects(sj2);
            book2.setNo("2");

            //将书节点添加到跟节点
            books.addBook(book2);

            XMap xmp = new XMap();
            xmp.register(Books.class);

            List filters = new ArrayList();

            System.out.println(xmp.asXmlString(books, "UTF-8", filters, true));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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

 import org.nuxeo.common.xmap.XMap;


 public class XmapTest {
    public static void main(String[] args) {
        try {
            //声明一组书的根节点
            Books books=new Books();

            //声明一本书
            Book book=new Book();
            //书的类型
            List sj=new ArrayList();
            sj.add("java");
            sj.add("xml");
            //设置书节点的属性
            book.setPrice(10);
            book.setTitle("java是傻逼");
            book.setSubjects(sj);
            book.setNo("1");

            //将书节点添加到跟节点
            books.addBook(book);

          //声明一本书
            Book book2=new Book();
            //书的类型
            List sj2=new ArrayList();
            sj2.add("C++");
            sj2.add("c");
            //设置书节点的属性
            book2.setPrice(10);
            book2.setTitle("c++程序设计");
            book2.setSubjects(sj2);
            book2.setNo("2");

            //将书节点添加到跟节点
            books.addBook(book2);

            XMap xmp = new XMap();
            xmp.register(Books.class);

            List filters = new ArrayList();

            System.out.println(xmp.asXmlString(books, "UTF-8", filters, true));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

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

import org.nuxeo.common.xmap.XMap;


public class XmapTest {
    public static void main(String[] args) {
        try {
            //声明一组书的根节点
            Books books=new Books();
            
            //声明一本书
            Book book=new Book();
            //书的类型
            List sj=new ArrayList();
            sj.add("java");
            sj.add("xml");
            //设置书节点的属性
            book.setPrice(10);
            book.setTitle("java是傻逼");
            book.setSubjects(sj);
            book.setNo("1");
            
            //将书节点添加到跟节点
            books.addBook(book);
            
          //声明一本书
            Book book2=new Book();
            //书的类型
            List sj2=new ArrayList();
            sj2.add("C++");
            sj2.add("c");
            //设置书节点的属性
            book2.setPrice(10);
            book2.setTitle("c++程序设计");
            book2.setSubjects(sj2);
            book2.setNo("2");
            
            //将书节点添加到跟节点
            books.addBook(book2);
            
            XMap xmp = new XMap();
            xmp.register(Books.class);

            List filters = new ArrayList();

            System.out.println(xmp.asXmlString(books, "UTF-8", filters, true));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

运行上面这个类就可以生成开头所看见的那个XML的内容

解析xml

xmap.register(Books.class);
            URL url = new File("book.xml").toURL();
            InputStream in = new FileInputStream(new File("book.xml"));
            Object[] result = (Object[]) xmap.loadAll(in);

Books books=(Books)result[0];

xmap.register(Books.class);
            URL url = new File("book.xml").toURL();
            InputStream in = new FileInputStream(new File("book.xml"));
            Object[] result = (Object[]) xmap.loadAll(in);

Books books=(Books)result[0];

xmap.register(Books.class);
            URL url = new File("book.xml").toURL();
            InputStream in = new FileInputStream(new File("book.xml"));
            Object[] result = (Object[]) xmap.loadAll(in);

Books books=(Books)result[0];

数据就完全autowire by name进入到了bean，某些情况下很好用（xml很整齐，每个节点的内容都一样，固定）