sax方式解析xml的优点

sax方式解析xml的优点：只要有jdk的存在，严格意义上来说是jre，它就可以运行，不依赖任何第三方的jar包。在移动设备上尤为广泛使用。比如Android就使用它来解析xml。当然Android更为推荐的是采用xmlpull来解析xml。这种方式也同样适合javase。我在后期会为大家准备使用xmlpull解析xml的demo。敬请关注。xml文件：张三男181987-06-08好学生李四女181987-06-08好学生小王男181987-06-08好学生小张男181987-06-08好学生小明男181987-06-08好学生xml对应的Javabean：packagecom.parsexml.entity;publicclassStudentprivateintid;privateintgroup;privateStringname;privateStringsex;privateintage;privateStringemail;privateStringmemo;privateStringbirthday;publicintgetId()returnid;publicvoidsetId(intid)this.id=id;publicintgetGroup()returngroup;publicvoidsetGroup(intgroup)this.group=group;publicStringgetName()returnname;publicvoidsetName(Stringname)=name;publicStringgetSex()returnsex;publicvoidsetSex(Stringsex)this.sex=sex;publicintgetAge()returnage;publicvoidsetAge(intage)this.age=age;publicStringgetEmail()returnemail;publicvoidsetEmail(Stringemail)this.email=email;publicStringgetMemo()returnmemo;publicvoidsetMemo(Stringmemo)this.memo=memo;publicStringgetBirthday()returnbirthday;publicvoidsetBirthday(Stringbirthday)this.birthday=birthday;开始解析：packagecom.parsexml;importjava.io.IOException;importjava.io.InputStream;importjava.util.ArrayList;importjava.util.List;importjavax.xml.parsers.ParserConfigurationException;importjavax.xml.parsers.SAXParser;importjavax.xml.parsers.SAXParserFactory;importorg.xml.sax.Attributes;importorg.xml.sax.SAXException;importorg.xml.sax.helpers.DefaultHandler;importcom.parsexml.entity.Student;/*功能描述:采用sax方式解析XML*authorsxyx2008*/publicclassSaxParseXmlextendsDefaultHandler/存放遍历集合privateListlist;/构建Student对象privateStudentstudent;/用来存放每次遍历后的元素名称(节点名称)privateStringtagName;publicListgetList()returnlist;publicvoidsetList(Listlist)this.list=list;publicStudentgetStudent()returnstudent;publicvoidsetStudent(Studentstudent)this.student=student;publicStringgetTagName()returntagName;publicvoidsetTagName(StringtagName)this.tagName=tagName;/只调用一次初始化list集合OverridepublicvoidstartDocument()throwsSAXExceptionlist=newArrayList();/调用多次开始解析OverridepublicvoidstartElement(Stringuri,StringlocalName,StringqName,Attributesattributes)throwsSAXExceptionif(qName.equals(student)student=newStudent();/获取student节点上的id属性值student.setId(Integer.parseInt(attributes.getValue(0);/获取student节点上的group属性值student.setGroup(Integer.parseInt(attributes.getValue(1);this.tagName=qName;/调用多次OverridepublicvoidendElement(Stringuri,StringlocalName,StringqName)throwsSAXExceptionif(qName.equals(student)this.list.add(this.student);this.tagName=null;/只调用一次OverridepublicvoidendDocument()throwsSAXException/调用多次Overridepublicvoidcharacters(charch,intstart,intlength)throwsSAXExceptionif(this.tagName!=null)Stringdate=newString(ch,start,length);if(this.tagName.equals(name)this.student.setName(date);elseif(this.tagName.equals(sex)this.student.setSex(date);elseif(this.tagName.equals(age)this.student.setAge(Integer.parseInt(date);elseif(this.tagName.equals(email)this.student.setEmail(date);elseif(this.tagName.equals(birthday)this.student.setBirthday(date);elseif(this.tagName.equals(memo)this.student.setMemo(date);publicstaticvoidmain(Stringargs)SAXParserparser=null;try/构建SAXParserparser=SAXParserFactory.newInstance().newSAXParser();/实例化DefaultHandler对象SaxParseXmlparseXml=newSaxParseXml();/加载资源文件转化为一个输入流InputStreamstream=SaxParseXml.class.getClassLoader().getResourceAsStream(Student.xml);/调用parse()方法parser.parse(stream,parseXml);/遍历结果Listlist=parseXml.getList();for(Studentstudent:list)System.out.println(id:+student.getId()+tgroup:+student.getGroup()+tname:+student.getName()+tsex:+student.getSex()+tage:+student.getAge()+temail:+student.getEmail()+tbirt