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

心已赠人 2022-06-10 10:00 187阅读 0赞

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>