java中利用dom4j解析XML文件

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注意：使用dom4j开发，需下载dom4j相应的jar文件

题目：后台利用dom4j解析student.xml文件，并返回list<student>集合

需要解析的xml：

<?xml version="1.0" encoding="utf-8"?>
<classes>
    <class name="st01">
        <student id="10001">user1</student>
        <student id="10002">user2</student>
        <student id="10003">user3</student>
    </class>
    <class name="st02">
        <student id="10004">user4</student>
        <student id="10005">user5</student>
        <student id="10006">user6</student>
    </class>
    <class name="st03">
        <student id="10007">user7</student>
        <student id="10008">user8</student>
        <student id="10009">user9</student>
    </class>
    <class name="st04">
        <student id="10010">user10</student>
        <student id="10011">user12</student>
        <student id="10012">user13</student>
    </class>
    <class name="st05">
        <student id="10013">user14</student>
        <student id="10014">user15</student>
        <student id="10015">user16</student>
    </class>
</classes>

java解析xml代码：

/**
 * @author hh
 */
public class xmlutil {
    /**
     * 读取xml学生列表信息
     * @return
     */
    public list<student> liststudent(){
        //创建saxreader对象
        saxreader reader=new saxreader();
        document document = null;
        try {
            //通过read方法读取一个文件 转换成document对象
            document = reader.read(new file("/users/mac/documents/students.xml"));
        } catch (documentexception e) {
            e.printstacktrace();
        }
        //获取根节点元素对象
        element node = document.getrootelement();
        return elementmethod(node);
    }

    /**
     * 获取节点中的信息
     * @param node
     * @return
     */
    private list<student> elementmethod(element node){
        list<student> list = new arraylist<student>();
        //获取所有class 节点
        list<element> elementclass = node.elements("class");
        for (element aclass : elementclass) {
            //获取所有student节点
            list<element> elelmentstu=aclass.elements("student");
            for (element element : elelmentstu) {
                //创建学生对象
                student stu = new student();
                //class节点里name的值
                stu.setsclazz(aclass.attribute("name").getvalue());
                //student节点里id的值
                stu.setsid(element.attribute("id").getvalue());
                //student节点里的string值
                stu.setsname(element.getstringvalue());

                list.add(stu);
            }
        }

        return list;
    }
}

实体类：

/**
 * @author hh
 */
public class student {
    private string sname;
    private string sid;
    private string sclazz;


    public string getsname() {
        return sname;
    }

    public void setsname(string sname) {
        this.sname = sname;
    }

    public string getsid() {
        return sid;
    }

    public void setsid(string sid) {
        this.sid = sid;
    }

    public string getsclazz() {
        return sclazz;
    }

    public void setsclazz(string sclazz) {
        this.sclazz = sclazz;
    }

    @override
    public string tostring() {
        return "student{" +
                "sname='" + sname + '\'' +
                ", sid='" + sid + '\'' +
                ", sclazz='" + sclazz + '\'' +
                '}';
    }
}

view code

 

@test 代码：

public class studentdaotest {
    @test
    public void testliststudent(){
        list<student> list = new xmlutil().liststudent();
        for (student student : list) {
            system.out.println(student);
        }
    }
}

view code

 

运行结果：