在java中解析xml数据

Question

我有一个要求从xml获取数据.

字符串res;

数据将在字符串res中,如下所示.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<person>
  <id>QZhx_w1eEJ</id>
  <first-name>pratap</first-name>
  <last-name>murukutla</last-name>
</person>

我必须从这个数据中获取id和first-name和last-name,并且必须存储在变量id,first-name,last-name中

如何访问xml以获取这些详细信息.

Answer 1

您可以使用JAXB(JSR-222)并执行以下操作.Java SE 6中包含一个实现.

演示

package forum10520757;

import java.io.StringReader;
import javax.xml.bind.*;
import javax.xml.bind.annotation.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Person.class);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        StringReader xml = new StringReader("<person><id>QZhx_w1eEJ</id><first-name>pratap</first-name><last-name>murukutla</last-name></person>");
        Person person = (Person) unmarshaller.unmarshal(xml);

        System.out.println(person.id);
        System.out.println(person.firstName);
        System.out.println(person.lastName);
    }

    @XmlRootElement
    @XmlAccessorType(XmlAccessType.FIELD)
    static class Person {
        String id;

        @XmlElement(name="first-name")
        String firstName;

        @XmlElement(name="last-name")
        String lastName;
    }

}

产量

QZhx_w1eEJ
pratap
murukutla