XML转换成object，object转换成XML

分手后的思念是犯贱 2022-05-11 11:20 389阅读 0赞

1.转换代码如下

package com.ihealthtek.jbagent.util;
    
    import javax.xml.bind.JAXBContext;
    import javax.xml.bind.JAXBException;
    import javax.xml.bind.Marshaller;
    import javax.xml.bind.Unmarshaller;
    import java.io.*;
    
    /**
     * 封装了XML转换成object，object转换成XML的代码
     *
     * @author Steven
     *
     */
    public class XMLUtil {
        /**
         * 将对象直接转换成String类型的 XML输出
         *
         * @param obj
         * @return
         */
        public static String convertToXml(Object obj) {
            // 创建输出流
            StringWriter sw = new StringWriter();
            try {
                // 利用jdk中自带的转换类实现
                JAXBContext context = JAXBContext.newInstance(obj.getClass());
    
                Marshaller marshaller = context.createMarshaller();
                // 格式化xml输出的格式
                marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
                        Boolean.TRUE);
                // 将对象转换成输出流形式的xml
                marshaller.marshal(obj, sw);
            } catch (JAXBException e) {
                e.printStackTrace();
            }
            return sw.toString();
        }
    
        /**
         * 将对象根据路径转换成xml文件
         *
         * @param obj
         * @param path
         * @return
         */
        public static void convertToXml(Object obj, String path) {
            try {
                // 利用jdk中自带的转换类实现
                JAXBContext context = JAXBContext.newInstance(obj.getClass());
    
                Marshaller marshaller = context.createMarshaller();
                // 格式化xml输出的格式
                marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
                        Boolean.TRUE);
                // 将对象转换成输出流形式的xml
                // 创建输出流
                FileWriter fw = null;
                try {
                    fw = new FileWriter(path);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                marshaller.marshal(obj, fw);
            } catch (JAXBException e) {
                e.printStackTrace();
            }
        }
    
        @SuppressWarnings("unchecked")
        /**
         * 将String类型的xml转换成对象
         */
        public static Object convertXmlStrToObject(Class clazz, String xmlStr) {
            Object xmlObject = null;
            try {
                JAXBContext context = JAXBContext.newInstance(clazz);
                // 进行将Xml转成对象的核心接口
                Unmarshaller unmarshaller = context.createUnmarshaller();
                StringReader sr = new StringReader(xmlStr);
                xmlObject = unmarshaller.unmarshal(sr);
            } catch (JAXBException e) {
                e.printStackTrace();
            }
            return xmlObject;
        }
    
        @SuppressWarnings("unchecked")
        /**
         * 将file类型的xml转换成对象
         */
        public static Object convertXmlFileToObject(Class clazz, String xmlPath) {
            Object xmlObject = null;
            try {
                JAXBContext context = JAXBContext.newInstance(clazz);
                Unmarshaller unmarshaller = context.createUnmarshaller();
                FileReader fr = null;
                try {
                    fr = new FileReader(xmlPath);
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                }
                xmlObject = unmarshaller.unmarshal(fr);
            } catch (JAXBException e) {
                e.printStackTrace();
            }
            return xmlObject;
        }
    }

package com.ihealthtek.jbagent.domain.in;
    
    import javax.xml.bind.annotation.XmlElement;
    import javax.xml.bind.annotation.XmlRootElement;
    import java.util.List;
    //最外层根节点
    @XmlRootElement(name="NETHIS")
    public class WnInArchiveList {
    
        List<WnInArchive> wnInArchives;
    //文件中的根标识
        @XmlElement(name = "GW")
        public List<WnInArchive> getWnInArchives() {
            return wnInArchives;
        }
    
        public void setWnInArchives(List<WnInArchive> wnInArchives) {
            this.wnInArchives = wnInArchives;
        }
    }

3.
    package com.ihealthtek.jbagent.domain.in;
    
    import com.alibaba.fastjson.annotation.JSONField;
    
    import javax.xml.bind.annotation.XmlAccessType;
    import javax.xml.bind.annotation.XmlAccessorType;
    import javax.xml.bind.annotation.XmlElement;
    import javax.xml.bind.annotation.XmlRootElement;
    import java.io.Serializable;
    @XmlAccessorType(XmlAccessType.FIELD)
    // XML文件中的根标识
    @XmlRootElement(name = "GW")
    
    public class WnInArchive implements Serializable {
    
        /**
         *
         */
        @XmlElement(name = "GRBJH")
        private String grbjh;
       
        @XmlElement(name = "DABH")
        private String dabh;

省略get set方法……

4.对象可以转换成xml格式String

String wnxml = XMLUtil.convertToXml(xxx);

5.xml转换为对象

WnOutArchiveList wn = (WnOutArchiveList)XMLUtil.convertXmlStrToObject(WnOutArchiveList.class,object);