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
