xml和java Bean的直接转换，Xmap

最新推荐文章于 2021-02-16 11:06:30 发布

原创最新推荐文章于 2021-02-16 11:06:30 发布 · 3.2k 阅读

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#java #xml #bean #books #string #import

本文介绍了一个使用Java实现图书信息对象到XML文件的序列化及反序列化的示例。示例中定义了Book和Books两个类，并通过XMap进行对象到XML的转换。

package test; 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; /** * Book 实体对象，此处用XMap注解 * @author Administrator * */ @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 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; } public String getNo() { return no; } public void setNo(String no) { this.no = no; } } /**==================================================**/ package test; import java.util.ArrayList; import java.util.List; import org.nuxeo.common.xmap.annotation.XNodeList; import org.nuxeo.common.xmap.annotation.XObject; /** * 图书对象集合类 * @author zhouyu * */ @XObject(value = "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); } } /**==================================================**/ package test; import java.util.ArrayList; import java.util.List; import org.nuxeo.common.xmap.XMap; import com.io.IoUtils; /** * 从对象到xml转换 * @author zhouyu * */ public class ObjectToXmlDemo { 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<String> sj = new ArrayList<String>(); 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<String> sj2=new ArrayList<String>(); 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<String> filters = new ArrayList<String>(); String content = xmp.asXmlString(books, "UTF-8", filters, true); IoUtils.WriteFile(content, "UTF-8", "books.xml"); } catch (Exception e) { e.printStackTrace(); } } } /**==================================================**/ package test; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.net.URL; import org.nuxeo.common.xmap.XMap; public class XmlToObjectDemo { public static void main(String[] args) { try { XMap xmp = new XMap(); xmp.register(Books.class); //URL url = new File("books.xml").toURL(); InputStream in = new FileInputStream(new File("books.xml")); Object[] result = (Object[]) xmp.loadAll(in); Books books = (Books) result[0]; for(int i = 0 ; i < books.getBook().size() ; i++) { Book book = books.getBook().get(i); System.out.println(book.getNo()); System.out.println(book.getPrice()); System.out.println(book.getTitle()); System.out.println(book.getSubjects().get(i)); } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } } /**==================================================**/ <?xml version="1.0" encoding="UTF-8" standalone="no"?> <books> <book no="1"> <title>java是傻逼</title> <subject>java</subject> <subject>xml</subject> <price>10</price> </book> <book no="2"> <title>c++程序设计</title> <subject>C++</subject> <subject>c</subject> <price>10</price> </book> </books>