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使用JAXBContext輕松實現(xiàn)Java和xml的互相轉(zhuǎn)換方式

更新時間：2021年08月10日 10:11:12 作者：它山之石,可以攻玉

這篇文章主要介紹了依靠JAXBContext輕松實現(xiàn)Java和xml的互相轉(zhuǎn)換方式，具有很好的參考價值，希望對大家有所幫助。如有錯誤或未考慮完全的地方，望不吝賜教

JAXBContext實現(xiàn)Java和xml的互相轉(zhuǎn)換

類文件注解：@XmlRootElement不可缺少

<span style="font-size:14px;">@XmlRootElement  
public class Man {  
    private String name;  
    private int age;
    public Student() {  
        super();  
    } 
    public Student(String name, int age) {  
        super();  
        this.name = name;  
        this.age = age;  
    }  
    public String getName() {  
        return name;  
    }  
    public void setName(String name) {  
        this.name = name;  
    }  
    public int getAge() {  
        return age;  
    }  
    public void setAge(int age) {  
        this.age = age;  
    }   
}  </span>

Java 轉(zhuǎn)換 Xml：

@Test  
public void testJava2Xml(){  
    try {  
        JAXBContext jc = JAXBContext.newInstance(Man.class);  
        Marshaller ms = jc.createMarshaller();  
        Man man = new Man("man",100);  
        ms.marshal(man, System.out);  
    } catch (JAXBException e) {  
        e.printStackTrace();  
    }  
}

Xml 轉(zhuǎn)換 Java：

@Test  
public void testXml2Java() throws JAXBException{  
    String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><Man><age>100</age><name>man</name></Man>";  
    JAXBContext jc = JAXBContext.newInstance(Man.class);  
    Unmarshaller unmar = jc.createUnmarshaller();  
    Man man = (Man) unmar.unmarshal(new StringReader(xml));  
    System.out.println(man.getName());  
}

JAXBContext 解析 xml

前提：

package com.sgcc.load.vo;
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
 
@XmlRootElement(name = "gldxresult")
@XmlAccessorType(XmlAccessType.FIELD)
public class XmlAnalysis { // 泛化, 聚合 
	@XmlElement(name = "success")
	private String success;
	@XmlElement(name = "totalnum")
	private String totalnum; 
 
    @XmlElement(name = "accounts")
    List<Accounts> accounts = new ArrayList<>();
  	
	public List<Accounts> getAccounts() {
		return accounts;
	}
 
	public void setAccounts(List<Accounts> accounts) {
		this.accounts = accounts;
	}
 
	public String getSuccess() {
		return success;
	}
 
	public void setSuccess(String success) {
		this.success = success;
	}
 
	public String getTotalnum() {
		return totalnum;
	}
 
	public void setTotalnum(String totalnum) {
		this.totalnum = totalnum;
	}  
}

package com.sgcc.load.vo; 
import java.util.ArrayList;
import java.util.List; 
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement; 
@SuppressWarnings("serial")
@XmlAccessorType(XmlAccessType.FIELD)
public class Accounts extends ArrayList<Account>{
   
   @XmlElement(name = "account")
   public List<Account> getAccount() {
	        return this;
   }   
}

package com.sgcc.load.vo;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlElement; 
@XmlAccessorType(XmlAccessType.FIELD)
public class Account {
	@XmlElement(name = "seqid")
	private String seqid;
    @XmlElement(name = "dxid")
    private String dxid;
    @XmlElement(name = "compid")
    private String compid;
    @XmlElement(name = "rspcode")
    private String rspcode;
    @XmlElement(name = "code")
    private String code;
    @XmlElement(name = "name")
    private String name;      
   
	public String getSeqid() {
		return seqid;
	}
	public void setSeqid(String seqid) {
		this.seqid = seqid;
	}
	public String getDxid() {
		return dxid;
	}
	public void setDxid(String dxid) {
		this.dxid = dxid;
	}
	public String getCompid() {
		return compid;
	}
	public void setCompid(String compid) {
		this.compid = compid;
	}
	public String getRspcode() {
		return rspcode;
	}
	public void setRspcode(String rspcode) {
		this.rspcode = rspcode;
	}
	public String getCode() {
		return code;
	}
	public void setCode(String code) {
		this.code = code;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}      
}

測試：

package com.sgcc.load.test; 
import java.io.StringReader; 
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller; 
import com.sgcc.load.vo.Accounts;
import com.sgcc.load.vo.XmlAnalysis; 
import groovyjarjarcommonscli.ParseException; 
public class Test {
	
	private static XmlAnalysis transToVOs(String webserviceMsg) throws JAXBException, ParseException {
		final StringReader reader = new StringReader(webserviceMsg);
		JAXBContext ctx=JAXBContext.newInstance(new XmlAnalysis().getClass());
		Unmarshaller um=ctx.createUnmarshaller();
		XmlAnalysis ds=(XmlAnalysis)um.unmarshal(reader);		
		return ds;
	}
	public static void main(String[] args) {
		String xmlMsg = "<?xml version=\"1.0\" encoding=\"GBK\"?> \n<gldxresult><success>0</success><totalnum>1</totalnum>"+
"<accounts><yzy>hahaha</yzy><account><seqid></seqid><dxid>1136005118</dxid><compid>0603</compid><rspcode>New0001</rspcode><rspmsg>值：00 沒有匹配到分類</rspmsg>"+
"<code>EHBSXPZYFDC000</code><name>哈哈哈哈哈哈哈哈哈</name></account></accounts></gldxresult>";
		
		try{
			XmlAnalysis transToVOs = transToVOs(xmlMsg);
            for(int index = 0;index<transToVOs.getAccounts().get(0).getAccount().size();index++){
    			System.out.println(transToVOs.getAccounts().get(0).getAccount().get(index).getName());
            }
		}catch(Exception e){
			e.printStackTrace();
		}
	}	
}

以上為個人經(jīng)驗，希望能給大家一個參考，也希望大家多多支持腳本之家。

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