Dom4j解析xml格式的字符串【java】

时间：2023-03-09 14:37:42
Dom4j解析xml格式的字符串【java】

一般我们会使用dom4j、SAX、w3c来解析xml文件，网上也大多提供此类解决方案。

但在实际项目中，也有会解析xml格式的字符串报文的。

比如，有如下字符串：

String = "<Response service="OrderWebService"><Head>OK</Head><Body><OrderResponse><customerOrderNo>201605110015</customerOrderNo><mailNo>070000314903</mailNo><printUrl>http://10.202.18.24:8080/osms/wbs/print/printOrder.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==</printUrl><invoiceUrl>http://10.202.18.24:8080/osms/wbs/print/printInvoice.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==</invoiceUrl></OrderResponse></Body></Response>";

对如上字符串进行格式化之后：

<Response service="OrderWebService">

	<Head>OK</Head>

	<Body>

		<OrderResponse>

			<customerOrderNo>201605110015</customerOrderNo>

			<mailNo>070000314903</mailNo>

			<printUrl>http://10.202.18.24:8080/osms/wbs/print/printOrder.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==</printUrl>

			<invoiceUrl>http://10.202.18.24:8080/osms/wbs/print/printInvoice.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==</invoiceUrl>

		</OrderResponse>

	</Body>

</Response>

即使格式化之后，我们也发现这串报文比较特殊，因为它使用了属性而不是元素节点来描述对象。

下面提供dom4j的解决方案：

	public HashMap<String, Object> stringToXmlByDom4j(String content){

		HashMap<String, Object> result = new HashMap<String, Object>();

		try {

		SAXReader saxReader=new SAXReader();

	        org.dom4j.Document docDom4j=saxReader.read(new ByteArrayInputStream(content.getBytes("utf-8")));

	        org.dom4j.Element root = docDom4j.getRootElement();

	        List<Attribute> rooAttrList = root.attributes();

	        for (Attribute rootAttr : rooAttrList) {

	            System.out.println(rootAttr.getName() + ": " + rootAttr.getValue());

	            result.put(rootAttr.getName(), rootAttr.getValue());

	           }

	        List<org.dom4j.Element> childElements = root.elements();

	        for (org.dom4j.Element e1 : childElements) {

	            System.out.println("第一层："+e1.getName() + ": " + e1.getText());

	            result.put(e1.getName(), e1.getText());

	           } 

	        for (org.dom4j.Element child : childElements) {

	         //未知属性名情况下

	         List<Attribute> attributeList = child.attributes();

	         for (Attribute attr : attributeList) {

	          System.out.println("第二层："+attr.getName() + ": " + attr.getValue());

	          result.put(attr.getName(), attr.getValue());

	         }

	         //已知属性名情况下

//	         System.out.println("id: " + child.attributeValue("id"));

	         //未知子元素名情况下

	         List<org.dom4j.Element> elementList = child.elements();

	         for (org.dom4j.Element ele : elementList) {

	        	 System.out.println("第二层："+ele.getName() + ": " + ele.getText());

	        	 result.put(ele.getName(), ele.getText());

	        	 List<Attribute> kidAttr = ele.attributes();

	             for (Attribute kidattr : kidAttr) {

	              System.out.println("第三层："+kidattr.getName() + ": " + kidattr.getValue());

	              result.put(kidattr.getName(), kidattr.getValue());

	             }

	        	 List<org.dom4j.Element> lidList = ele.elements();

	        	 int size = lidList.size();

	        	 if(size>0){

	        		 for (org.dom4j.Element e2 : lidList) {

	                  System.out.println("第三层："+e2.getName() + ": " + e2.getText());

	                  result.put(e2.getName(), e2.getText());

	                 }

	        	 }

	         }

//	         System.out.println();

	         //已知子元素名的情况下

//	         System.out.println("title" + child.elementText("title"));

//	         System.out.println("author" + child.elementText("author"));

	         //这行是为了格式化美观而存在

//	         System.out.println();

	        }

		} catch (Exception e) {

			e.printStackTrace();

		}

		return result;

	}

写一个main方法测试结果如下：

响应结果：<Response service="OrderWebService"><Head>OK</Head><Body><OrderResponse><customerOrderNo>201605110015</customerOrderNo><mailNo>070000314903</mailNo><printUrl>http://10.202.18.24:8080/osms/wbs/print/printOrder.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==</printUrl><invoiceUrl>http://10.202.18.24:8080/osms/wbs/print/printInvoice.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==</invoiceUrl></OrderResponse></Body></Response>

service: OrderWebService

第一层：Head: OK

第一层：Body: 

第二层：OrderResponse:

第三层：customerOrderNo: 201605110015

第三层：mailNo: 070000314903

第三层：printUrl: http://10.202.18.24:8080/osms/wbs/print/printOrder.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==

第三层：invoiceUrl: http://10.202.18.24:8080/osms/wbs/print/printInvoice.pub?mailno=vYrygnDPNe9Csjz35xwzwQ==

　　

相关文章