解析xml报文，xml与map互转

这段时间写了一个关于xml报文的工具类，做一下具体的讲解：

xml文本

    1711030000054
    
        MNLN
        CITIC
        dlm3
    
    GMT
    
    2017-11-03T08:02:54
    
    


    
        
            MNLN
            CITIC
            GFWD1700000943
        
        2017-11-03T08:02:54
        
            
                SHZH00
                WHWH
            
        
        
            
                SHZH00
            
        
        
            
                
            
            
                
            
        
        201711030000172
        
        
        PANORAMA INTERFACE
        
            
                EraYTInterface
                
                EraYTInterface
            
        
    
    
        TXAU
        AA1
        DD
        
        
            
                AccType
                
            
            
                ContractCode
                AUY-CNY/FX
            
            
                UserTradeDate
                2017-11-03T08:02:54
            
            
                TradeOwner
                
            
        
    
    
        
            
                AUY
            
            
                CNY
            
            273.69
        
        
            
                1
                
                    2018-02-07
                    -90.0
                    AUY
                
            
        
        
            
                2
                
                    2018-02-07
                    24632.1
                    CNY
                
            
        
    
    
        
            PseudoProduct
            
        
        
            PseudoProductType
            
        
    

xml转map方法：

/** 
     * xml转map 不带属性 
     * @param xmlStr 
     * @param needRootKey 是否需要在返回的map里加根节点键 
     * @return 
     * @throws DocumentException 
     */  
    public static Map xml2map(String xmlStr, boolean needRootKey) throws DocumentException {  
        SAXReader reader = new SAXReader(); 
        Document doc = reader.read(xmlStr);  
        Element root = doc.getRootElement();  
        Map map = (Map) xml2map(root);  
        if(root.elements().size()==0 && root.attributes().size()==0){  
            return map;  
        }  
        if(needRootKey){  
            //在返回的map里加根节点键（如果需要）  
            Map rootMap = new HashMap();  
            rootMap.put(root.getName(), map);  
            return rootMap;  
        }  
        return map;  
    }  
  
    /** 
     * xml转map 带属性 
     * @param xmlStr 
     * @param needRootKey 是否需要在返回的map里加根节点键 
     * @return 
     * @throws DocumentException 
     */  
    public static Map xml2mapWithAttr(String xmlStr, boolean needRootKey) throws DocumentException {  
        
        SAXReader reader = new SAXReader(); 
        Document doc = reader.read(xmlStr);  
        Element root = doc.getRootElement();  
        Map map = (Map) xml2mapWithAttr(root);  
        if(root.elements().size()==0 && root.attributes().size()==0){  
            return map; //根节点只有一个文本内容  
        }  
        if(needRootKey){  
            //在返回的map里加根节点键（如果需要）  
            Map rootMap = new HashMap();  
            rootMap.put(root.getName(), map);  
            return rootMap;  
        }  
        return map;  
    }  
  
    /** 
     * xml转map 不带属性 
     * @param e 
     * @return 
     */  
    @SuppressWarnings("unchecked")
    private static Map xml2map(Element e) {  
        Map map = new LinkedHashMap();  
        List list = e.elements();  
        if (list.size() > 0) {  
            for (int i = 0; i < list.size(); i++) {  
                Element iter = (Element) list.get(i);  
                List mapList = new ArrayList();  
  
                if (iter.elements().size() > 0) {  
                    Map m = xml2map(iter);  
                    if (map.get(iter.getName()) != null) {  
                        Object obj = map.get(iter.getName());  
                        if (!(obj instanceof List)) {  
                            mapList = new ArrayList();  
                            mapList.add(obj);  
                            mapList.add(m);  
                        }  
                        if (obj instanceof List) {  
                            mapList = (List) obj;  
                            mapList.add(m);  
                        }  
                        map.put(iter.getName(), mapList);  
                    } else  
                        map.put(iter.getName(), m);  
                } else {  
                    if (map.get(iter.getName()) != null) {  
                        Object obj = map.get(iter.getName());  
                        if (!(obj instanceof List)) {  
                            mapList = new ArrayList();  
                            mapList.add(obj);  
                            mapList.add(iter.getText());  
                        }  
                        if (obj instanceof List) {  
                            mapList = (List) obj;  
                            mapList.add(iter.getText());  
                        }  
                        map.put(iter.getName(), mapList);  
                    } else  
                        map.put(iter.getName(), iter.getText());  
                }  
            }  
        } else  
            map.put(e.getName(), e.getText());  
        return map;  
    }  
  
    /** 
     * xml转map 带属性 
     * @param e 
     * @return 
     */  
    @SuppressWarnings("unchecked")
    private static Map xml2mapWithAttr(Element element) {  
        Map map = new LinkedHashMap();  
  
        List list = element.elements();  
        List listAttr0 = element.attributes(); // 当前节点的所有属性的list  
        for (Attribute attr : listAttr0) {  
            map.put("@" + attr.getName(), attr.getValue());  
        }  
        if (list.size() > 0) {  
  
            for (int i = 0; i < list.size(); i++) {  
                Element iter = list.get(i);  
                List mapList = new ArrayList();  
  
                if (iter.elements().size() > 0) {  
                    Map m = xml2mapWithAttr(iter);  
                    if (map.get(iter.getName()) != null) {  
                        Object obj = map.get(iter.getName());  
                        if (!(obj instanceof List)) {  
                            mapList = new ArrayList();  
                            mapList.add(obj);  
                            mapList.add(m);  
                        }  
                        if (obj instanceof List) {  
                            mapList = (List) obj;  
                            mapList.add(m);  
                        }  
                        map.put(iter.getName(), mapList);  
                    } else  
                        map.put(iter.getName(), m);  
                } else {  
  
                    List listAttr = iter.attributes(); // 当前节点的所有属性的list  
                    Map attrMap = null;  
                    boolean hasAttributes = false;  
                    if (listAttr.size() > 0) {  
                        hasAttributes = true;  
                        attrMap = new LinkedHashMap();  
                        for (Attribute attr : listAttr) {  
                            attrMap.put("@" + attr.getName(), attr.getValue());  
                        }  
                    }  
  
                    if (map.get(iter.getName()) != null) {  
                        Object obj = map.get(iter.getName());  
                        if (!(obj instanceof List)) {  
                            mapList = new ArrayList();  
                            mapList.add(obj);  
                            // mapList.add(iter.getText());  
                            if (hasAttributes) {  
                                attrMap.put("#text", iter.getText());  
                                mapList.add(attrMap);  
                            } else {  
                                mapList.add(iter.getText());  
                            }  
                        }  
                        if (obj instanceof List) {  
                            mapList = (List) obj;  
                            // mapList.add(iter.getText());  
                            if (hasAttributes) {  
                                attrMap.put("#text", iter.getText());  
                                mapList.add(attrMap);  
                            } else {  
                                mapList.add(iter.getText());  
                            }  
                        }  
                        map.put(iter.getName(), mapList);  
                    } else {  
                        // map.put(iter.getName(), iter.getText());  
                        if (hasAttributes) {  
                            attrMap.put("#text", iter.getText());  
                            map.put(iter.getName(), attrMap);  
                        } else {  
                            map.put(iter.getName(), iter.getText());  
                        }  
                    }  
                }  
            }  
        } else {  
            // 根节点的  
            if (listAttr0.size() > 0) {  
                map.put("#text", element.getText());  
            } else {  
                map.put(element.getName(), element.getText());  
            }  
        }  
        return map;  
    }  

执行方法

public static void main(String[] args) throws DocumentException, IOException {  
        String textFromFile = "PMEXCH.xml";  
        Map string=xml2mapWithAttr(textFromFile,false);
}

结果是：

{@version=1.03, NTMHeader={MessageID= MessageID , MessageSource={SystemID= SystemID_1 , Location= Location_1 , UserID= UserID_1 }, Timezone=Timezone, DateFormat={@format=ISO8601, #text=}, GeneratedTime= GeneratedTime , PublishResponse={@value=JustLogs, #text=}, TransactMessage={@value=NoTransact, #text=}}, NTMTrade={TradeHeader={SysTradeID={SystemID= SystemID_2 , Location= Location_2 , TradeID= TradeID }, TradeDate= TradeDate , OriginEntity={Entity={@role=Owner, Organization= Organization_1 , Trader= Trader }}, OtherEntity={Entity={@role=Counterparty, Organization= Organization_2 }}, InterestedParties={Entity=[{@role=Broker, Organization= Organization_3 }, {@role=Custodian, Organization= Organization_4 }]}, TradeDescription= TradeDescription , TradeRole={@value=Actual, #text=}, TradeMessageRole={@value=New, #text=}, Notes= Notes_1 , ProcessHistory={ProcessAction={ProcessName=ProcessName, ProcessedOK={@value=Yes, #text=}, Notes= Notes_2 }}}, TradeTags={TradingArea= TradingArea , AccountingArea= AccountingArea , AccountingGroup= AccountingGroup , TicketID= TicketID , Extensions={Extension=[{ExtName= ExtName_1 , ExtValue={@datatype=String, #text=}}, {ExtName= ExtName_2 , ExtValue={@datatype=String, #text=}}, {ExtName=ExtName_3, ExtValue={@datatype=Datetime, #text=}}, {ExtName=ExtName_4, ExtValue={@datatype=String, #text=}}]}}, FX={FXRate={NumeratorCCY={CCY= CCY_1 }, DenominatorCCY={CCY= CCY_2 }, Rate= Rate }, BuyCFL={Cashflow={@CFLType=Principal, CashflowID= CashflowID_1 , CashflowPayment={PayDate= PayDate_1 , Amount= amount_1 , CCY= CCY_3 }}}, SellCFL={Cashflow={@CFLType=Principal, CashflowID= CashflowID_2 , CashflowPayment={PayDate= PayDate_2 , Amount= amount_2 , CCY= CCY_4 }}}}, Extensions={Extension=[{ExtName= ExtName_5 , ExtValue={@datatype=String, #text=}}, {ExtName= ExtName_6 , ExtValue={@datatype=String, #text=}}]}}}

map转xml的方法

/**
     * map转xml map中没有根节点的键
     * 
     * @param map
     * @param rootName
     *            父节点
     * @throws DocumentException
     * @throws IOException
     */
    public static Document mapToxml(Map map, String rootName)
            throws DocumentException, IOException {
        Document doc = DocumentHelper.createDocument();
        Element root = DocumentHelper.createElement(rootName);
        doc.add(root);
        mapToxml(map, root);
        return doc;
    }

    /**
     * map转xml map中含有根节点的键
     * 
     * @param map
     * @throws DocumentException
     * @throws IOException
     */
    @SuppressWarnings({ "unchecked", "rawtypes" })
    public static Document mapToxml(Map map)
            throws DocumentException, IOException {
        Iterator> entries = map.entrySet().iterator();
        if (entries.hasNext()) {
            // 获取第一个键创建根节点
            Map.Entry entry = entries.next();
            Document doc = DocumentHelper.createDocument();
            Element root = DocumentHelper.createElement(entry.getKey());
            doc.add(root);
            mapToxml((Map) entry.getValue(), root);
            return doc;
        }
        return null;
    }

    /**
     * map转xml
     * 
     * @param map
     * @param body
     *            xml节点元素
     * @return
     */
    @SuppressWarnings({ "unchecked", "rawtypes" })
    private static Element mapToxml(Map map, Element body) {
        Iterator> entries = map.entrySet().iterator();
        while (entries.hasNext()) {
            // 遍历entries
            Map.Entry entry = entries.next();
            String key = entry.getKey();
            Object value = entry.getValue();
            if (key.startsWith("@")) { // 属性
                body.addAttribute(key.substring(1, key.length()),
                        value.toString());
            } else if (key.equals("#text")) { // 有属性时的文本
                body.setText(value.toString());
            } else {
                if (value instanceof java.util.List) {
                    List list = (List) value;
                    Object obj;
                    for (int i = 0; i < list.size(); i++) {
                        obj = list.get(i);
                        // list里是map或String，不会存在list里直接是list的，
                        if (obj instanceof java.util.Map) {
                            Element subElement = body.addElement(key);
                            mapToxml((Map) list.get(i), subElement);
                        } else {
                            body.addElement(key).setText((String) list.get(i));
                        }
                    }
                } else if (value instanceof java.util.Map) {
                    Element subElement = body.addElement(key);
                    mapToxml((Map) value, subElement);
                } else {
                    body.addElement(key).setText(value.toString());
                }
            }
        }
        return body;
    }

格式化xml

/**
     * 格式化输出xml
     * 
     * @param xmlStr
     *            xml文件
     * @return
     * @throws DocumentException
     * @throws IOException
     */
    public static String formatXml(String xmlStr) throws DocumentException,
            IOException {
        Document document = DocumentHelper.parseText(xmlStr);
        return formatXml(document);
    }

    /**
     * 格式化输出xml
     * 
     * @param document
     * @return
     * @throws DocumentException
     * @throws IOException
     */
    public static String formatXml(Document document) throws DocumentException,
            IOException {
        // 格式化输出格式
        OutputFormat format = OutputFormat.createPrettyPrint();
        StringWriter writer = new StringWriter();
        // 格式化输出流
        XMLWriter xmlWriter = new XMLWriter(writer, format);
        // 将document写入到输出流
        xmlWriter.write(document);
        xmlWriter.close();
        return writer.toString();
    }执行结果

    1711030000054
    
        MNLN
        CITIC
        dlm3
    
    GMT
    
    2017-11-03T08:02:54
    
    


    
        
            MNLN
            CITIC
            GFWD1700000943
        
        2017-11-03T08:02:54
        
            
                SHZH00
                WHWH
            
        
        
            
                SHZH00
            
        
        
            
                
            
            
                
            
        
        201711030000172
        
        
        PANORAMA INTERFACE
        
            
                EraYTInterface
                
                EraYTInterface
            
        
    
    
        TXAU
        AA1
        DD
        
        
            
                AccType
                
            
            
                ContractCode
                AUY-CNY/FX
            
            
                UserTradeDate
                2017-11-03T08:02:54
            
            
                TradeOwner
                
            
        
    
    
        
            
                AUY
            
            
                CNY
            
            273.69
        
        
            
                1
                
                    2018-02-07
                    -90.0
                    AUY
                
            
        
        
            
                2
                
                    2018-02-07
                    24632.1
                    CNY
                
            
        
    
    
        
            PseudoProduct
            
        
        
            PseudoProductType
            
        
    

 

转载于:https://www.cnblogs.com/-zpy/p/9265920.html