JAXB完成XML和Java对象的互转

/** * @Description: * * @Title: JAXBUtil.java * @Package com.joyce.util * @Copyright: Copyright (c) 2014 * * @author Comsys-LZP * @date 2014-6-10 下午02:54:40 * @version V2.0 */ package com.joyce.util; import java.io.ByteArrayOutputStream; import java.io.File; import javax.xml.bind.JAXBContext; import javax.xml.bind.Marshaller; import javax.xml.bind.Unmarshaller; /** * @Description:JAXB对象和XML转换util * * @ClassName: JAXBUtil * @Copyright: Copyright (c) 2014 * * @author Comsys-LZP * @date 2014-6-10 下午02:54:40 * @version V2.0 */ public class JAXBUtil { /** * @Description: 将对象转换为XML * * @param obj * @param beanClass * @return * @throws Exception * * @Title: JAXBUtil.java * @Copyright: Copyright (c) 2014 * * @author Comsys-LZP * @date 2014-6-10 下午04:23:45 * @version V2.0 */ @SuppressWarnings("unchecked") public String objectToXmlStr(Object obj, Class beanClass) throws Exception { JAXBContext context = JAXBContext.newInstance(beanClass); // 根据上下文获取marshaller对象 Marshaller marshaller = context.createMarshaller(); // 设置编码字符集 marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8"); // 格式化XML输出，有分行和缩进 marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); // 打印到控制台 marshaller.marshal(obj, System.out); ByteArrayOutputStream baos = new ByteArrayOutputStream(); marshaller.marshal(obj, baos); String xmlObj = new String(baos.toByteArray()); return xmlObj.replace(" standalone=\"yes\"", ""); } /** * @Description: 将对象转换为XML并且写入文件 * * @param obj * @param beanClass * @param file * @throws Exception * * @Title: JAXBUtil.java * @Copyright: Copyright (c) 2014 * * @author Comsys-LZP * @date 2014-6-10 下午04:24:13 * @version V2.0 */ @SuppressWarnings("unchecked") public void objectToXmlStr(Object obj, Class beanClass, File file) throws Exception { JAXBContext context = JAXBContext.newInstance(beanClass); // 根据上下文获取marshaller对象 Marshaller marshaller = context.createMarshaller(); // 设置编码字符集 marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8"); // 格式化XML输出，有分行和缩进 marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); // 打印到控制台 marshaller.marshal(obj, System.out); marshaller.marshal(obj, file); } /** * @Description: XML转换为对象 * * @param <T> * @param file * @param beanClass * @return * @throws Exception * * @Title: JAXBUtil.java * @Copyright: Copyright (c) 2014 * * @author Comsys-LZP * @date 2014-6-10 下午04:24:50 * @version V2.0 */ @SuppressWarnings("unchecked") public <T> T xmlStrToObject(File file, Class<T> beanClass) throws Exception { T bean = beanClass.newInstance(); JAXBContext context = JAXBContext.newInstance(beanClass); Unmarshaller unmarshaller = context.createUnmarshaller(); bean = (T) unmarshaller.unmarshal(file); return bean; } }