java 解析 xml

Question

xml 格式如下：
<?xml version="1.0" encoding="UTF-8"?>
<ConfList>
  <conf confid="210834" username="admin" topic="远程测试2" begintime="2010-01-29 11:07:21" endtime="2010-02-01 11:06:00" content="备注" conftype="publicconf" confshow="1" audiotype="5" maxpersonspeak="9" attendnum="30" driftnum="0" videotype="320" bandwidth="256" maxvideo="24" encrypt="0"/>
  <conf confid="253378" username="admin" topic="远程测试1" begintime="2009-11-27 09:41:44" endtime="2009-12-27 09:41:00" content="备注" conftype="publicconf" confshow="1" audiotype="5" maxpersonspeak="9" attendnum="30" driftnum="0" videotype="320" bandwidth="256" maxvideo="24" encrypt="0"/>
</ConfList>要求读出xml中的各项数据值！

Answer 1

根据各个节点的名字读取！！element元素以及元素中attribute的名字来获取其值（Jdom）

Answer 2

详见
http://hi.baidu.com/pluto_andy/blog/item/49d4f1c35bda41120ff4776b.html

Answer 3

public static  void main(String[] args){
String xmlFilePath = "Sp-Config.xml";
try {
String filePath = null; filePath = xmlFilePath;
Document document = new SAXReader().read(
Thread.currentThread().getContextClassLoader().getResourceAsStream(filePath)
);

List listWsdlAddr = document.selectNodes("//SpConfig/WsdlAddr");
System.out.println(listWsdlAddr.size());
for (Iterator iter = listWsdlAddr.iterator(); iter.hasNext();){
Element element = (Element) iter.next();
String s = element.getStringValue();
System.out.println(s);
}
List listServiceName  =document.selectNodes("//SpConfig/ServiceConfig");
for (Iterator iter = listServiceName.iterator(); iter.hasNext();){
Element element = (Element) iter.next();
String s = element.attributeValue("serviceName");
System.out.println(s);
}
} catch (Exception e) {
e.printStackTrace();
}
}

Answer 4

Element root = doc.getDocumentElement();
NodeList elements = root.getChildNodes();
for (int i = 0; i < elements.getLength(); i++) {
Node element = elements.item(i);
if (element.getNodeType() == Node.ELEMENT_NODE) {
Element e = (Element) element;
String confid = e.getAttribute("confid");
beans.put(beanName, bean);
}
}

return container;
<conf confid="210834" username="admin" topic="远程测试2" begintime="2010-01-29 11:07:21" endtime="2010-02-01 11:06:00" content="备注" conftype="publicconf" confshow="1" audiotype="5" maxpersonspeak="9" attendnum="30" driftnum="0" videotype="320" bandwidth="256" maxvideo="24" encrypt="0"/>  是一个element  confid都是此element的attribute

Answer 5

在eclipse中打出element.  在后面出现的方法中找吧，肯定有你想要的，记不清楚了，是attributevalue（）吧

Answer 6

用altova xml spy生成Java代码然后就很简单了

Answer 7

import java.io.StringReader;import javax.xml.parsers.DocumentBuilderFactory;import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;public class Test {

public void analyticalXML(String xml){
Document doc;
try {
doc = DocumentBuilderFactory.newInstance().newDocumentBuilder()
.parse(new InputSource(new StringReader(xml)));
    Element root = doc.getDocumentElement();

if (0<root.getAttributes().getLength()){
    System.out.println("根节点属性信息..........");
                for (int a = 0; a < root.getAttributes().getLength(); a++) {
                    System.out.println(root.getAttributes().item(a)
                            .getNodeName()
                            + ":" + root.getAttributes().item(a).getNodeName());                 }
}
   NodeList books = root.getChildNodes();
            for (int i = 0; i < books.getLength(); i++) {
                Node book = books.item(i);
                // 判断是不是子节点                 if (book.getNodeType() == Node.ELEMENT_NODE) {
                    // 获得子节点的所有属性名和值                     if (0 < book.getAttributes().getLength()) {
                        System.out.println("第" + i + "个子节点属性信息..........");
                        for (int b = 0; b < book.getAttributes().getLength(); b++) {
                            System.out.println(book.getAttributes().item(b)
                                    .getNodeName()
                                    + ":"
                                    + book.getAttributes().item(b)
                                            .getNodeValue());
                        }
                    }
                    //获得子节点的子节点                     for (int j = 0; j < book.getChildNodes().getLength(); j++) {
                        Node book1 = book.getChildNodes().item(j);
                        //System.out.println(book.getChildNodes().item(j));                         // 判断是不是子节点                         if (book1.getNodeType()==Node.ELEMENT_NODE) {
                            // 获得子节点的所有属性名和值                             if (0 < book1.getAttributes().getLength()) {
                                System.out.println(" 第" + i + "个子节点的第" + j
                                        + "子节点的属性信息..........");
                                for (int b1 = 0; b1 < book1.getAttributes()
                                        .getLength(); b1++) {
                                    System.out.println(book1.getAttributes()
                                            .item(b1).getNodeName()
                                            + ":"
                                            + book1.getAttributes().item(b1)
                                                    .getNodeValue());
                                }
                            }
                            System.out.println(book1.getNodeName()+":"+book1.getFirstChild().getNodeValue());
                        }                        
                    }
                }                
            }
        } catch (Exception e) {
            e.printStackTrace();
        }     }

public static void main(String [] args){
Test t=new Test();
String xml="<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
"<ConfList>" +
"<conf confid=\"210834\" username=\"admin\" topic=\"远程测试2\" begintime=\"2010-01-29 11:07:21\" endtime=\"2010-02-01 11:06:00\" content=\"备注\" conftype=\"publicconf\" confshow=\"1\" audiotype=\"5\" maxpersonspeak=\"9\" attendnum=\"30\" driftnum=\"0\"  bandwidth=\"256\" maxvideo=\"24\" encrypt=\"0\"/>" +
"<conf confid=\"253378\" username=\"admin\" topic=\"远程测试1\" begintime=\"2009-11-27 09:41:44\" endtime=\"2009-12-27 09:41:00\" content=\"备注\" conftype=\"publicconf\" confshow=\"1\" audiotype=\"5\" maxpersonspeak=\"9\" attendnum=\"30\" driftnum=\"0\"  bandwidth=\"256\" maxvideo=\"24\" encrypt=\"0\"/>" +
"</ConfList> ";
t.analyticalXML(xml);
}

}
运行结果：
第0个子节点属性信息..........
attendnum:30
audiotype:5
bandwidth:256
begintime:2010-01-29 11:07:21
confid:210834
confshow:1
conftype:publicconf
content:备注
driftnum:0
encrypt:0
endtime:2010-02-01 11:06:00
maxpersonspeak:9
maxvideo:24
topic:远程测试2
username:admin
第1个子节点属性信息..........
attendnum:30
audiotype:5
bandwidth:256
begintime:2009-11-27 09:41:44
confid:253378
confshow:1
conftype:publicconf
content:备注
driftnum:0
encrypt:0
endtime:2009-12-27 09:41:00
maxpersonspeak:9
maxvideo:24
topic:远程测试1
username:admin
呵呵，楼主我也不会。刚写的。。试试吧。。

Answer 8

实际上这半个可以去掉。在子节点还有子节点的情况下可以如此判断     //获得子节点的子节点                            for (int j = 0; j < book.getChildNodes().getLength(); j++) {
                                Node book1 = book.getChildNodes().item(j);
                                //System.out.println(book.getChildNodes().item(j));                                // 判断是不是子节点                                if (book1.getNodeType()==Node.ELEMENT_NODE) {
                                    // 获得子节点的所有属性名和值                                    if (0 < book1.getAttributes().getLength()) {
                                        System.out.println(" 第" + i + "个子节点的第" + j
                                                + "子节点的属性信息..........");
                                        for (int b1 = 0; b1 < book1.getAttributes()
                                                .getLength(); b1++) {
                                            System.out.println(book1.getAttributes()
                                                    .item(b1).getNodeName()
                                                    + ":"
                                                    + book1.getAttributes().item(b1)
                                                            .getNodeValue());
                                        }
                                    }
                                    System.out.println(book1.getNodeName()+":"+book1.getFirstChild().getNodeValue());
                                }                        
                            }

Answer 9

import java.io.File;
import java.io.IOException;import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;public class TestNet { public static void main(String[] args) throws ParserConfigurationException, SAXException, IOException {

DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder db = documentBuilderFactory.newDocumentBuilder();

Document d = db.parse(new File("E:\\fate\\mynewproforstruts2\\javaxml\\src\\TestNet.xml"));

Element root = d.getDocumentElement();//获取根元素对象

System.out.println("根元素："+root.getNodeName());

NodeList dates = root.getElementsByTagName("conf");//获取元素名为conf的所有元素集合

for(int i=0;i<dates.getLength();i++){//遍历上面取得的集合
Element e = (Element)dates.item(i);//获取第i个元素
System.out.println("子元素"+e.getNodeName()+"属性：");
parseAttributes(e);

}
}


public static  void parseAttributes(Element e){//解析元素属性并打印出来
NamedNodeMap nnm = e.getAttributes();//获取属性集合
for(int i=0;i<nnm.getLength();i++){
Node n = nnm.item(i);//遍历属性
System.out.print("\t");
System.out.println(n.getNodeName()+" : "+n.getNodeValue());
}
}}

Answer 10

用dom4j去解析,很快的,dom4j也很容易上手

Answer 11

我只想给一点提醒
呵呵
别忘记导入dom4j架包