java使用commons-betwixt 实现bean与xml互转
项目所需的jar包：
一、XML2BeanUtils.java工具类如下：
[java]
package com.aimilin;
import java.beans.IntrospectionException;
/**
* Xml文件与javaBean对象互转工具类
* @author LiuJunGuang
* @date 2012-11-21下午1:38:56
*/
public class XML2BeanUtils {
private static final String xmlHead = "<?xml version='1.0' ?>\r\n";
/**
* 将javaBean对象转换成xml文件
* @author LiuJunGuang
* @param obj 待转换的javabean对象
* @return String 转换后的xml 字符串
* @throws IntrospectionException
* @throws SAXException
* @throws IOException
* @date 2012-11-21下午1:38:53
*/
public static String bean2XmlString(Object obj) throws IOException, SAXException, IntrospectionException {
if (obj == null)
throw new IllegalArgumentException("给定的参数不能为null！");
StringWriter sw = new StringWriter();
sw.write(xmlHead);//写xml文件头
BeanWriter writer = new BeanWriter(sw);
IntrospectionConfiguration config = writer.getXMLIntrospector().getConfiguration();
writer.getBindingConfiguration().setMapIDs(false);
config.setAttributesForPrimitives(false);
config.setAttributeNameMapper(new HyphenatedNameMapper());
config.setElementNameMapper(new DecapitalizeNameMapper());
writer.enablePrettyPrint();
writer.write(obj.getClass().getSimpleName(), obj);
writer.close();
return sw.toString();
}
/**
* 将xml文件转换成相应的javabean对象,对于List，Map，Array转换时需要在需要保证Bean类中有单个添加方法</br>
* <p><blockquote><pre>
* 例如：List<{@link String}> userNameList --> addUserNameList(String username)
* String[] items --> addItems(String item)
* Map<String,User> userMap --> addUserMap(String key,User user)
* </pre></blockquote></p>
* 注意：<br>
* 目前还没有找到好的方法解决Map与Map嵌套，List与List等嵌套的问题，使用时应当避免以上几种情况。
* @author LiuJunGuang
* @param beanClass 待转换的javabean字节码
* @param xmlFile xml文件字符串
* @return 转换后的对象
* @throws IntrospectionException
* @throws SAXException
* @throws IOException
* @date 2012-11-21下午1:40:14
*/
@SuppressWarnings("unchecked")
public static <T> T xmlSring2Bean(Class<T> beanClass, String xmlFile) throws IntrospectionException, IOException,
SAXException {
if (beanClass == null || xmlFile == null || xmlFile.isEmpty())
throw new IllegalArgumentException("给定的参数不能为null！");
StringReader xmlReader = new StringReader(xmlFile);
BeanReader reader = new BeanReader();
reader.getXMLIntrospector().getConfiguration().setAttributesForPrimitives(false);
reader.getBindingConfiguration().setMapIDs(false);
T obj = null;
reader.registerBeanClass(beanClass.getSimpleName(), beanClass);
obj = (T) reader.parse(xmlReader);
xmlReader.close();
return obj;
}
}
二、简单的javabean对象：
[java]
package com.aimilin;
public class PersonBean {
private String name;
private int age;
public PersonBean() {
}
public PersonBean(String name, int age) {
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "PersonBean[name='" + name + "',age='" + age + "']";
}
}
[java]
package com.aimilin;
import java.io.Serializable;
import java.util.Arrays;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
public class User implements Serializable {
private static final long serialVersionUID = 1354973253595584043L;
private String userName;
private int age;
