java中使用dom4j读xml文件简单教程
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1: package org.zzp.common.xml.dom4j; 2: 3: import java.util.Iterator; 4: import java.util.List; 5: 6: import org.dom4j.Attribute; 7: import org.dom4j.Document; 8: import org.dom4j.DocumentException; 9: import org.dom4j.Element; 10: import org.dom4j.io.SAXReader; 11: 12: public class Dom4jReadDemo { 13: public static void main(String[] args) { 14: try { 15: Document doc=new SAXReader().read("test.xml"); 16: Element root=doc.getRootElement(); 17: System.out.println("根节点名："+root.getName()); 18: List<Element> students=root.elements(); 19: System.out.println("共有学生数"+students.size()+"\n"); 20: //遍历每个学生 21: for(Iterator<Element> it= students.iterator();it.hasNext();){ 22: Element student=(Element)it.next(); 23: List<Element> student_s=student.elements(); 24: //遍历每个学生的子标签 25: for(Iterator<Element> its=student_s.iterator();its.hasNext();){ 26: Element param=(Element)its.next(); 27: switch(XMLStudentsParam.valueOf(param.getName())){ 28: case name: 29: System.out.print("姓名："); 30: break; 31: case id: 32: System.out.print("编号："); 33: break; 34: case homepage: 35: System.out.print("主页："); 36: if (param.attribute("boolean")!=null && !param.attribute("boolean").getText().equals("true")) { 37: System.out.print("(网页未经验证)"); 38: } 39: break; 40: } 41: System.out.println(param.getText()); 42: } 43: //遍历每个学生的属性 44: for(Iterator<Attribute> ita=student.attributeIterator();ita.hasNext();){ 45: Attribute a=(Attribute)ita.next(); 46: switch(XMLStudentsParam.valueOf(a.getName())){ 47: case sex: 48: System.out.print("性别："); 49: break; 50: case age: 51: System.out.print("年龄："); 52: break; 53: } 54: System.out.println(a.getText()); 55: } 56: System.out.println(); 57: } 58: } catch (DocumentException e) { 59: // TODO Auto-generated catch block 60: e.printStackTrace(); 61: } 62: } 63: }