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