<?xml version="1.0"?>
<classGrid><classGridlb><class_id>320170105000009363</class_id><class_number>0301</class_number><adviser>018574</adviser><studentGrid><studentGridlb><stu_id>030101</stu_id><stu_name>齐天</stu_name><stu_age>9</stu_age><stu_birthday>2008-11-07</stu_birthday></studentGridlb><studentGridlb><stu_id>030102</stu_id><stu_name>张惠</stu_name><stu_age>10</stu_age><stu_birthday>2009-04-08</stu_birthday></studentGridlb><studentGridlb><stu_id>030103</stu_id><stu_name>龙五</stu_name><stu_age>9</stu_age><stu_birthday>2008-11-01</stu_birthday></studentGridlb></studentGrid></classGridlb><classGridlb><class_id>420170105000007363</class_id><class_number>0302</class_number><adviser>018577</adviser><studentGrid><studentGridlb><stu_id>030201</stu_id><stu_name>马宝</stu_name><stu_age>10</stu_age><stu_birthday>2009-09-02</stu_birthday></studentGridlb></studentGrid></classGridlb>
</classGrid>

<dependency><groupId>dom4j</groupId><artifactId>dom4j</artifactId><version>1.6.1</version><exclusions><exclusion><groupId>xml-apis</groupId><artifactId>xml-apis</artifactId></exclusion></exclusions>
</dependency>

package com.lfy.cn.javaXmlPasareTest;import java.io.File;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;/*** **/
public class App
{public static void main( String[] args ) throws DocumentException, ParseException{String path = System.getProperty("user.dir")+"\\src\\demo.xml";SAXReader reader = new SAXReader();Document document = reader.read(new File(path));List<StudentGridlb> studentGridlbList = new ArrayList<>();StudentGridlb studentGridlbVo;for (Object classGridlb : document.getRootElement().elements("classGridlb")) {Element classGridlbEle = (Element) classGridlb;DateFormat format = new SimpleDateFormat("yyyy-MM-dd");for (Object studentGridlb : classGridlbEle.element("studentGrid").elements("studentGridlb")) {Element studentGridlbEle = (Element) studentGridlb;studentGridlbVo = new StudentGridlb();studentGridlbVo.setStu_id(studentGridlbEle.elementTextTrim("stu_id"));studentGridlbVo.setStu_age(Integer.parseInt(studentGridlbEle.elementTextTrim("stu_age")));studentGridlbVo.setStu_name(studentGridlbEle.elementTextTrim("stu_name"));studentGridlbVo.setStu_birthday(format.parse(studentGridlbEle.elementTextTrim("stu_birthday")));studentGridlbList.add(studentGridlbVo);}}System.out.println(studentGridlbList);}
}

<dependency><groupId>jdom</groupId><artifactId>jdom</artifactId><version>1.1</version>
</dependency>

package com.lfy.cn.javaXmlPasareTest;import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;/*** **/
public class JdomTest
{public static void main( String[] args ) throws ParseException, FileNotFoundException, IOException, JDOMException{String path = System.getProperty("user.dir")+"\\src\\demo.xml";SAXBuilder jdomsaxBuilder = new SAXBuilder(false);Document doc = jdomsaxBuilder.build(path);Element rootElement = doc.getRootElement();List<StudentGridlb> studentGridlbList = new ArrayList<>();StudentGridlb studentGridlb;for (Object classGridlb : rootElement.getChildren("classGridlb")) {Element classGridlbEle = (Element) classGridlb;DateFormat format = new SimpleDateFormat("yyyy-MM-dd");for (Object studentGrid : classGridlbEle.getChild("studentGrid").getChildren("studentGridlb")) {Element studentGridEle = (Element) studentGrid;studentGridlb = new StudentGridlb();studentGridlb.setStu_id(studentGridEle.getChildTextTrim("stu_id"));studentGridlb.setStu_age(Integer.parseInt(studentGridEle.getChildTextTrim("stu_age")));studentGridlb.setStu_name(studentGridEle.getChildTextTrim("stu_name"));studentGridlb.setStu_birthday(format.parse(studentGridEle.getChildTextTrim("stu_birthday")));studentGridlbList.add(studentGridlb);}}XMLOutputter outputter = new XMLOutputter();outputter.output(doc, new FileOutputStream(path));System.out.println(studentGridlbList);}
}