XML报文转JAVA对象-JAVA对象转XML报文

约定不等于承诺〃 2022-07-19 01:52 204阅读 0赞

JAVA 实体类 Person.java

public class Person {
    	
    	private int id;
    	private String username;
    	private String age;
    	private String address;
    	
    	public int getId() {
    		return id;
    	}
    	public void setId(int id) {
    		this.id = id;
    	}
    	public String getUsername() {
    		return username;
    	}
    	public void setUsername(String username) {
    		this.username = username;
    	}
    	public String getAge() {
    		return age;
    	}
    	public void setAge(String age) {
    		this.age = age;
    	}
    	public String getAddress() {
    		return address;
    	}
    	public void setAddress(String address) {
    		this.address = address;
    	}
    	
    	//无参构造函数
    	public Person(){
    		super();
    	}
    	
    	//有参构造函数
    	public Person(int id,String username,String age,String address){
    		this.id=id;
    		this.username=username;
    		this.age=age;
    		this.address=address;
    	}
    	
    
    }

第二个JAVA实体类，把上面声明的Person 实体作为一个变量存在

注意 @XmlRootElement 的注解的使用

import javax.xml.bind.annotation.XmlRootElement;
    
    @XmlRootElement
    public class ObjectDemo {
    	
    	private String name;
    	private String sex;
    	
    	private Person person;
    	
    	/**
    	 * @return the person
    	 */
    	public Person getPerson() {
    		return person;
    	}
    	/**
    	 * @param person the person to set
    	 */
    	public void setPerson(Person person) {
    		this.person = person;
    	}
    	/**
    	 * @return the name
    	 */
    	public String getName() {
    		return name;
    	}
    	/**
    	 * @param name the name to set
    	 */
    	public void setName(String name) {
    		this.name = name;
    	}
    	/**
    	 * @return the sex
    	 */
    	public String getSex() {
    		return sex;
    	}
    	/**
    	 * @param sex the sex to set
    	 */
    	public void setSex(String sex) {
    		this.sex = sex;
    	}
    	
    	//有参构造方法
    	public ObjectDemo(String name,String sex,Person person){
    		this.name=name;
    		this.sex=sex;
    		this.person=person;
    		
    	}
    	//无参构造方法
    	public ObjectDemo(){
    		super();
    	}
    	
    }

测试方法

import java.io.StringReader;
    
    import javax.xml.bind.JAXBContext;
    import javax.xml.bind.JAXBException;
    import javax.xml.bind.Marshaller;
    import javax.xml.bind.Unmarshaller;
    
    import org.junit.Test;
    
    import com.demo.vo.ObjectDemo;
    import com.demo.vo.Person;
    
    public class XmlToObject {
    
    	
    	@Test
    	public void XMLTobean() {
    		Person p = new Person(1, "小红", "10", "北京");
    		ObjectDemo ob = new ObjectDemo("小明", "11", p);
    
    		try {
    			JAXBContext context = JAXBContext.newInstance(ObjectDemo.class);
    			Marshaller marshaller = context.createMarshaller();
    			marshaller.marshal(ob, System.out);//这里的输出流直接输出了，也可以使用ByteArrayOutputStream();接收，toString()
    		} catch (JAXBException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    
    	}
    	
    	@Test  
        public void beanToXML() {  
    		String xml="<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" +
    				"<objectDemo>" +
    					"<name>小明</name>" +
    					"<person>" +
    						"<address>北京</address>" +
    						"<age>10</age>" +
    						"<id>1</id>" +
    						"<username>小红</username>" +
    					"</person>" +
    					"<sex>11</sex>" +
    				"</objectDemo>";
    		try {
    			JAXBContext context = JAXBContext.newInstance(ObjectDemo.class);
    			Unmarshaller unmarshaller = context.createUnmarshaller();  
    			ObjectDemo obj = (ObjectDemo)unmarshaller.unmarshal(new StringReader(xml));
    			System.out.println(obj.getName());
    			System.out.println(obj.getPerson().getAddress());
    			
    		} catch (JAXBException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} 
    	}
    	
    
    }ByteArrayOutputStream();接收，toString()
    		} catch (JAXBException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}
    
    	}
    	
    	@Test  
        public void beanToXML() {  
    		String xml="<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>" +
    				"<objectDemo>" +
    					"<name>小明</name>" +
    					"<person>" +
    						"<address>北京</address>" +
    						"<age>10</age>" +
    						"<id>1</id>" +
    						"<username>小红</username>" +
    					"</person>" +
    					"<sex>11</sex>" +
    				"</objectDemo>";
    		try {
    			JAXBContext context = JAXBContext.newInstance(ObjectDemo.class);
    			Unmarshaller unmarshaller = context.createUnmarshaller();  
    			ObjectDemo obj = (ObjectDemo)unmarshaller.unmarshal(new StringReader(xml));
    			System.out.println(obj.getName());
    			System.out.println(obj.getPerson().getAddress());
    			
    		} catch (JAXBException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		} 
    	}
    	
    
    }