Java解析xml文件之JDOM

本篇博客主要使用实例讲解如何使用jdom解析xml文件，不会对源码做分析。直接结合代码进行说明。
测试解析的xml文件如下：

<changeFileName>
    <transactionInfo>
        <detail name="sourceDirectory" value="C:\log">detail>
        <detail name="destDirectory" value="C:\log">detail>
        <detail name="timeSerialNumer" value="20180521">detail>
        <detail name="indexSerialNumber" value="10">detail>
        <detail name="databaseUser" value="zhuyuqiang">detail>
        <detail name="tableName" value="">detail>
        <detail name="userFileNameAsTableName" value="true">detail>
        <detail name="userUM" value="zhuyuqiang296">detail>
        <detail name="fileType" value=".sql">detail>
        <detail name="splitSymbol" value="_">detail>
    transactionInfo>
changeFileName>

看一下解析xml的方法：

//传入待解析的xml文件名
private static List parserByJdom(String configFileName) {
        SAXBuilder builder = new SAXBuilder();
        List infos = new ArrayList<>();
        try {
            InputStreamReader isr = new InputStreamReader(new FileInputStream(new File(configFileName)),"UTF-8");
            //通过SAXBuilder对xml的输入流进行解析生成Document对象
            org.jdom.Document document = builder.build(isr);
            //获取根元素
            org.jdom.Element root = document.getRootElement();
            //根据标签名，获取指定符合条件的所有元素
            List.jdom.Element> elements = root.getChildren("transactionInfo");
            //遍历子标签，解析内容
            for(org.jdom.Element element : elements){
                List.jdom.Element>es = element.getChildren();
                TransactionInfo info = new TransactionInfo();
                for(org.jdom.Element e : es){
                    String propertyName = e.getAttribute("name").getValue();
                    String propertyValue = e.getAttribute("value").getValue();
                    populateBean(info,propertyName,propertyValue);
                }
                infos.add(info);
            }
        } catch (JDOMException | IOException e) {
            log.info(e.getMessage());
        } catch (IllegalAccessException e) {
            log.info(e.getMessage());
        } catch (NoSuchFieldException e) {
            log.info(e.getMessage());
        }
        return infos;
    }

JDOM好像是对SAX的封装，使用起来更加方便。
打印出的解析封装后的TransactionInfo 信息如下：

[ sourceDirectory = C:\log, destDirectory = C:\log , timeSerialNumber = 20180521 , indexSerialNumber = 10 , databaseUser = zhuyuqiang , tableName = , userFileNameAsTableName = true , userUM = zhuyuqiang296 , fileType = .sql , splitSymbol = _ ]
通过打印的信息，方法已经将xml的所有信息成功解析了。