通过xStream读取xml文件生成Java对象和Java对象生成xml文件

通过xStream读取xml文件生成Java对象和Java对象生成xml文件

Student.java

package com.java.bean;

public class Student {
  private Integer id;
  private String name;
  private Integer age;
  private String address;
  private String tel;

  public Integer getId() {
    return id;
  }

  public void setId(Integer id) {
    this.id = id;
  }

  @Override
  public String toString() {
    return "Student [id=" + id + ", name=" + name + ", age=" + age
        + ", address=" + address + ", tel=" + tel + "]";
  }

  public String getName() {
    return name;
  }

  public void setName(String name) {
    this.name = name;
  }

  public Integer getAge() {
    return age;
  }

  public void setAge(Integer age) {
    this.age = age;
  }

  public String getAddress() {
    return address;
  }

  public void setAddress(String address) {
    this.address = address;
  }

  public String getTel() {
    return tel;
  }

  public void setTel(String tel) {
    this.tel = tel;
  }
}

测试类XstreamTest.java

package com.java.azzan;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;

import org.junit.Test;

import com.java.bean.Student;
import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class XstreamTest {

  public static void main(String[] args) {

  }

  @Test //读取xml文件转对象
  public void readXML () {
    XStream xstream = new XStream(new DomDriver());
    xstream.alias("student", Student.class);
    InputStreamReader o= null;
    Student student = null;
    File file = new File("C:\\Users\\admin\\Desktop\\xstream.xml");
    try {
      o = new FileReader(file);
      student =  (Student) xstream.fromXML(o);
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    }finally {
      if(o!= null){
        try {
          o.close();
        } catch (IOException e) {
          e.printStackTrace();
        }
      }
    }

    System.out.println("学号:"+student.getId());
    System.out.println("姓名:"+student.getName());
    System.out.println("年龄:"+student.getAge());
    System.out.println("地址:"+student.getAddress());
    System.out.println("电话:"+student.getTel());
  }

  @Test //将对象信息写入xml文件
  public void writeXML () {
    XStream xstream = new XStream(new DomDriver("utf-8"));
    xstream.alias("student", Student.class);

    Student student = new Student();
    student.setId(2);
    student.setName("Azzan");
    student.setAge(22);
    student.setAddress("sdheze");
    student.setTel("18711111111");

    String xmlFileName = "student.xml";
    File file = new File("C:\\Users\\admin\\Desktop\\"+xmlFileName);
    if (!file.exists()) {
      try {
        file.createNewFile();
        System.out.println("文件创建成功!");
      } catch (IOException e) {
        System.out.println("文件创建失败!");
        e.printStackTrace();
      }
    }

    //String xml = xstream.toXML(student);//不会直接生成xml文件,返回的仅仅只是xml文本字符串
    //System.out.println(xml);

    OutputStream out;
    try {
      out = new FileOutputStream(file);
      OutputStreamWriter writer = new OutputStreamWriter(out,Charset.forName("GBK"));
      writer.write("<?xml version=\"1.0\" encoding=\"GBK\"?>\n");
      xstream.toXML(student, writer);
      out.close();
      writer.close();
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    }catch (IOException e) {
      e.printStackTrace();
    }

  }
}

要读取的xml文件xstream.xml

<?xml version="1.0" encoding="GBK"?>
<student>
  <id>1</id>
  <name>azzan</name>
  <age>22</age>
  <address>China</address>
  <tel>18711111111</tel>
</student>

生成的xml文件student.xml

<?xml version="1.0" encoding="GBK"?>
<student>
  <id>2</id>
  <name>Azzan</name>
  <age>22</age>
  <address>BeiJing</address>
  <tel>18711111111</tel>
</student>