原始jdk javax.xml.parsers xml转化总结

以前遇到xml转化问题是一般直接使用了dom4j和jdom，今天尝试了一下使用普通的javax.xml，总结一下

1，xml转化为String

public static String getTextFromDom(Document doc) {
        TransformerFactory tfFactory = TransformerFactory.newInstance();
        Transformer tf;
        ByteArrayOutputStream bos = null;
        try {
            tf = tfFactory.newTransformer();
            tf.setOutputProperty("encoding", "UTF-8");
            bos = new ByteArrayOutputStream();
            tf.transform(new DOMSource(doc), new StreamResult(bos));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return bos.toString();
    }

2，符合格式的String 转化为document

public static Document getDocument(String xml) {
        Document document = null;
        try {
            StringReader stringReader = new StringReader(xml);
            InputSource inputSource = new InputSource(stringReader);
            DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbf.newDocumentBuilder();
            document = dBuilder.parse(inputSource);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return document;
    }

3，将xml转化为map（子类如果仍有子类，仍以map形式存，map取值是需判断值是否也是map）

public static Map<String, Object> getMapByDocument(Node node) {
        if (node.hasChildNodes() && node.getFirstChild().getNodeType()==Document.ELEMENT_NODE) {
            Map<String, Object> result = new HashMap<String, Object>();
            NodeList nl = node.getChildNodes();
            for (int i = 0; i < nl.getLength(); i++) {
                Node childNode = nl.item(i);
                if(childNode.hasChildNodes() && childNode.getFirstChild().getNodeType()==Document.ELEMENT_NODE){
                    Map<String, Object> childrenMap = getMapByDocument(childNode);
                    result.put(childNode.getNodeName(), childrenMap);
                }else {
                    result.put(childNode.getNodeName(), childNode.getTextContent());
                }
            }
            return result;
        } 
        return null;
    }

结果查看

public static void main(String[] args) {
        
        String xmlStr = "<body>" +
                "<ResultCode>6202</ResultCode>" +
                "<ResultDesc><aa>fffffffffff</aa></ResultDesc>" +
                "<SmsIds/><RemainCount>0</RemainCount>" +
                "</body>";
        Document doc = getDocument(xmlStr);
        System.out.println(getTextFromDom(doc));
        Map<String, Object> respMap = getMapByDocument(doc);
        Object result = respMap.get("body"); 
        if (result instanceof java.util.Map) {
            Map new_name = (Map) result;
            if (new_name.get("ResultDesc") instanceof java.util.Map) {
                Map ResultDesc = (Map) new_name.get("ResultDesc");
                System.out.println(ResultDesc.get("aa"));
            }
            System.out.println(new_name.get("ResultCode"));
        }
        for (Object obj : respMap.values()) {
            System.out.println(obj);
        }
    }

结果如下

<?xml version="1.0" encoding="UTF-8" standalone="no"?><body><ResultCode>6202</ResultCode><ResultDesc><aa>fffffffffff</aa></ResultDesc><SmsIds/><RemainCount>0</RemainCount></body>
fffffffffff
6202
{ResultDesc={aa=fffffffffff}, ResultCode=6202, SmsIds=, RemainCount=0}

 

posted @ 2014-10-30 23:07  china2k  阅读(1003)  评论(0)  编辑  收藏  举报