一、Dom4j API生成xml文件
@Test public void bulidXmlByDom4j(){ //创建document对象 Document document = DocumentHelper.createDocument(); //设置xml文档编码 document.setXMLEncoding("UTF-8"); //创建root根节点 Element root = DocumentHelper.createElement("root"); root.addAttribute("version","1.0"); //创建head节点 Element header = DocumentHelper.createElement("header"); //设置节点的属性 header.addAttribute("version","1.0"); //设置子节点 (子节点无属性时，可直接用addElement创建) Element element_header1 = header.addElement("timestamp"); //设置子节点的内容 element_header1.setText("20190122"); Element element_header2 = header.addElement("username"); element_header2.setText("yangsj"); Element element_header3 = header.addElement("password"); element_header3.setText("root"); //创建body节点 Element body = DocumentHelper.createElement("body"); body.addAttribute("version","1.0"); //创建action节点 Element action = DocumentHelper.createElement("action"); //创建action的子节点 Element action_option = DocumentHelper.createElement("option"); action_option.addAttribute("name","url"); action_option.addAttribute("value","http://127.0.0.1"); action.add(action_option); //创建data 节点 Element data = DocumentHelper.createElement("data"); Element dataField = DocumentHelper.createElement("field"); dataField.addAttribute("name","money"); dataField.addAttribute("value","10000"); data.add(dataField); body.add(action); body.add(data); root.add(header); root.add(body); document.add(root); String xml = document.asXML(); System.out.println(xml); }
执行结果
<?xml version="1.0" encoding="UTF-8"?> <root version="1.0"> <header version="1.0"> <timestamp>20190122</timestamp> <username>yangsj</username> <password>root</password> </header> <body version="1.0"> <action> <option name="url" value="http://127.0.0.1"/> </action> <data> <field name="money" value="10000"/> </data> </body> </root>
二、Dom4j 解析xml
@Test public void readXmlInfo() throws DocumentException { String xml = "<?xml version="1.0" encoding="UTF-8"?><root version="1.0"><body " + "version="1.0"><action><option name="url" value="http://127.0.0.1"/></action><data><field name="money" value="10000"/></data></body><header version="1.0"><timestamp>20190122</timestamp><username>yangsj</username><password>root</password></header></root>"; Map<String,String> headerMap = new HashMap<>(); Map<String,String> actionMap = new HashMap<>(); Map<String,String> dataMap = new HashMap<>(); Document document = DocumentHelper.parseText(xml); // 获取根元素 Element root = document.getRootElement(); //遍历根元素 for (Iterator iter = root.elementIterator(); iter.hasNext();){ Element element = (Element) iter.next(); //遍历header节点 if("header".equalsIgnoreCase(element.getName())){ for(Iterator i = element.elementIterator(); i.hasNext();){ Element headerElement = (Element) i.next(); headerMap.put(headerElement.getName(),headerElement.getTextTrim()); } } //遍历body节点 if("body".equalsIgnoreCase(element.getName())){ for (Iterator j = element.elementIterator(); j.hasNext();){ Element bodyElement = (Element) j.next(); //遍历action节点 if ("action".equalsIgnoreCase(bodyElement.getName())){ for (Iterator k = bodyElement.elementIterator(); k.hasNext();){ Element actionElement = (Element) k.next(); //获取节点的属性值 String name = actionElement.attributeValue("name"); String value = actionElement.attributeValue("value"); actionMap.put(name,value); } } //遍历data节点 if ("data".equalsIgnoreCase(bodyElement.getName())){ for (Iterator k = bodyElement.elementIterator(); k.hasNext();){ Element actionElement = (Element) k.next(); //获取节点的属性值 String name = actionElement.attributeValue("name"); String value = actionElement.attributeValue("value"); dataMap.put(name,value); } } } } } headerMap.forEach((x,y)->System.out.println("name :" + x + " value :" + y)); System.out.println("------------------------------------"); actionMap.forEach((x,y)->System.out.println("name :" + x + " value :" + y)); System.out.println("------------------------------------"); dataMap.forEach((x,y)->System.out.println("name :" + x + " value :" + y)); }
三、执行结果
name :password value :root name :timestamp value :20190122 name :username value :yangsj ------------------------------------ name :url value :http://127.0.0.1 ------------------------------------ name :money value :10000