java Bean 转 XML 格式

àì夳堔傛蜴生んèń 2022-03-26 03:22 344阅读 1赞

（1）先定义一个Bean 转 XML 的工具类

import java.io.StringWriter;
    
    import javax.xml.bind.JAXBContext;
    import javax.xml.bind.JAXBException;
    import javax.xml.bind.Marshaller;
    
    public class BeanToXmlUtil { 
    
    	public static String beanToXml(Object obj, Class<?> cls) throws JAXBException { 
    		return beanToXml(obj, cls, false);
    	}
    	
    	public static String beanToXml(Object obj, Class<?> cls, boolean format) throws JAXBException { 
    		JAXBContext context = JAXBContext.newInstance(cls);
    		Marshaller marshaller = context.createMarshaller();
    		//去掉生成 xml 的默认报文头
    		marshaller.setProperty(Marshaller.JAXB_FRAGMENT, true);
    		//输出格式化
    		marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, format); 
    		StringWriter writer = new StringWriter();
    		marshaller.marshal(obj, writer);
    		return writer.toString();
    	}
    }

（2）示例：

import javax.xml.bind.annotation.XmlElement;
    import javax.xml.bind.annotation.XmlRootElement;
    
    @XmlRootElement(name="Student")
    public class StudentVo{ 
    
    	private String id;
    	
    	private String code;
    	
    	private String name;
    	
    	@XmlElement(name = "ID")
    	public String getId() { 
    		return id;
    	}
    
    	public void setId(String id) { 
    		this.id = id;
    	}
    
    	@XmlElement(name = "Code")
    	public String getCode() { 
    		return code;
    	}
    
    	public void setCode(String code) { 
    		this.code = code;
    	}
    
    	@XmlElement(name = "Name")
    	public String getName() { 
    		return name;
    	}
    
    	public void setName(String name) { 
    		this.name = name;
    	}
    
    }

import java.util.List;
    import javax.xml.bind.annotation.XmlRootElement;
    
    @XmlRootElement(name="List")
    public class StudentListVo { 
    
    	List<StudentVo> studentVoList;
    
    	public List<StudentVo> getOrderGoodsList() { 
    		return studentVoList;
    	}
    
    	public void setOrderGoodsList(List<StudentVo> studentVoList) { 
    		this.studentVoList= studentVoList;
    	}
    }

（4）使用

StudentVo studentVo1 = new StudentVo ();
    studentVo1.setId("1");
    studentVo1.setCode("A001");
    studentVo1.setName("张三");
    
    StudentVo studentVo2 = new StudentVo ();
    studentVo2.setId("2");
    studentVo2.setCode("A002");
    studentVo2.setName("李四");
    
    List<StudentVo> studentList = new ArrayList<OrderGoodsVo>();
    studentList.add(studentVo1);
    studentList.add(studentVo2);
    
    StudentListVo list = new StudentListVo();
    list.setOrderGoodsList(studentList);
    String xmlList = BeanToXmlUtil.beanToXml(list, StudentListVo.class, true);
    
    System.out.println(xmlList);

参考：[https://www.cnblogs.com/liuk/p/5829389.html][https_www.cnblogs.com_liuk_p_5829389.html]

[https_www.cnblogs.com_liuk_p_5829389.html]: https://www.cnblogs.com/liuk/p/5829389.html