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解析string类型的xml字符串
我先拼接一个xml格式的字符串，模拟获取了这样的数据，然后再解析
所需要的包自行导入
StringBuilder sb = new StringBuilder(); sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); sb.append("<root>"); sb.append(" <header>"); sb.append(" <mark>" + "this is a mark！"+ "</mark>"); sb.append(" </header>"); sb.append(" <body>"); sb.append(" <data>"); sb.append(" <first>"); sb.append(" <second>" + "来解析我啊！"+ "</second>"); sb.append(" </first>"); sb.append(" </data>"); sb.append(" </body>"); sb.append("</root>"); //开始解析 String str= sb.toString(); Document doc = null; try { doc = DocumentHelper.parseText(str); } catch (DocumentException e) { e.printStackTrace(); } Element root = doc.getRootElement();// 指向根节点 <root> try { Element mark=root.element("header").element("mark"); Element second=root.element("body").element("data").element("first").element("second"); //获取xml的节点内容 System.out.println(mark.getTextTrim()); System.out.println(second.getTextTrim()); }catch(Exception e){ e.printStackTrace(); }运行结果：
解析String类型t复杂xml,多级节点,最好的例子
需要用jar包 dom4j-1.6.1.jar
字符串xml如下
<root> <flw> <name>aa</name> <age>22</age> <instance_info> <num>1</num> <code>0</code> <instance> <ip>10.1.1.2</ip> <mask>9999</mask> </instance> <instance> <ip>10.1.1.5</ip> <mask>717</mask> </instance> </instance_info> <instance_info> <num>2</num> <code>33</code> <instance> <ip>10.1.1.2</ip> <mask>9999</mask> </instance> <instance> <ip>10.1.1.9</ip> <mask>878</mask> </instance> </instance_info> </flw></root>解析代码
import java.io.ByteArrayInputStream;import java.io.UnsupportedEncodingException;import java.util.Iterator;import org.dom4j.DocumentException;import org.dom4j.io.SAXReader;public class XMLParser { public static void main(String[] args) { String xml = "<root><flw><name>aa</name><age>22</age><instance_info><num>1</num><code>0</code><instance><ip>10.1.1.2</ip><mask>9999</mask></instance><instance><ip>10.1.1.5</ip><mask>717</mask></instance></instance_info><instance_info><num>2</num><code>33</code><instance><ip>10.1.1.2</ip><mask>9999</mask></instance><instance><ip>10.1.1.9</ip><mask>878</mask></instance></instance_info></flw></root>"; long start = System.currentTimeMillis(); SAXReader reader = new SAXReader(); try { org.dom4j.Document doc = reader.read(new ByteArrayInputStream(xml .getBytes("UTF-8"))); org.dom4j.Element root = doc.getRootElement(); org.dom4j.Element element; org.dom4j.Element element2; org.dom4j.Element element3; for (Iterator i = root.elementIterator("flw"); i.hasNext();) { element = (org.dom4j.Element) i.next(); System.out .println("name:[" + element.elementText("name") + "]"); System.out.println("age:[" + element.elementText("age") + "]"); for (Iterator j = element.elementIterator("instance_info"); j .hasNext();) { element2 = (org.dom4j.Element) j.next(); System.out.println("\tnum:[" + element2.elementText("num") + "]"); System.out.println("\tcode:[" + element2.elementText("code") + "]"); for (Iterator k = element2.elementIterator("instance"); k .hasNext();) { element3 = (org.dom4j.Element) k.next(); System.out.println("\t\tip:[" + element3.elementText("ip") + "]"); System.out.println("\t\tmask:[" + element3.elementText("mask") + "]"); } } } } catch (DocumentException e) { e.printStackTrace(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } long end = System.currentTimeMillis(); System.out.println("耗时：" + (end - start) + "ms"); }}以上就是关于“Java中string类型的xml字符串实例分析”这篇文章的内容，相信大家都有了一定的了解，希望小编分享的内容对大家有帮助，若想了解更多相关的知识内容，请关注编程网行业资讯频道。
