java xml2Object

JAXB的话是java1.5之后出现的，对于java对象和xml文件之间互相转化的操作比较方便，以下先记录下来，免得以后忘了。

要转化成xml文件的对象：

 

package utils;

import java.io.File;
import java.util.List;

import javax.xml.bind.JAXB;
import javax.xml.bind.JAXBException;

public class Test {
    private int i;
    private String s;
    private boolean b;
    private List<Integer> list;

    public int getI() {
        return i;
    }
    public void setI(int i) {
        this.i = i;
    }

    public String getS() {
        return s;
    }

    public void setS(String s) {
        this.s = s;
    }

    public boolean isB() {
        return b;
    }

    public void setB(boolean b) {
        this.b = b;
    }

    public List<Integer> getList() {
        return list;
    }

    public void setList(List<Integer> list) {
        this.list = list;
    }

        //把xml文件转化成对象
    public static Test JAXBunmarshal(File xmlFile) throws JAXBException {
        return JAXB.unmarshal(xmlFile, Test.class);
    }

        //把对象转化成xml
    public void JAXBmarshal(File fRootDir) {
        if (!fRootDir.exists()) {
            fRootDir.mkdirs();
        }
        JAXB.marshal(this, new File(fRootDir, this.getS() + ".xml"));
    }

}

package utils;

import java.io.File;
import java.util.List;

import javax.xml.bind.JAXB;
import javax.xml.bind.JAXBException;

public class Test {
	private int i;
	private String s;
	private boolean b;
	private List<Integer> list;
	
	public int getI() {
		return i;
	}
	public void setI(int i) {
		this.i = i;
	}

	public String getS() {
		return s;
	}

	public void setS(String s) {
		this.s = s;
	}

	public boolean isB() {
		return b;
	}

	public void setB(boolean b) {
		this.b = b;
	}

	public List<Integer> getList() {
		return list;
	}

	public void setList(List<Integer> list) {
		this.list = list;
	}

        //把xml文件转化成对象
	public static Test JAXBunmarshal(File xmlFile) throws JAXBException {
		return JAXB.unmarshal(xmlFile, Test.class);
	}

        //把对象转化成xml
	public void JAXBmarshal(File fRootDir) {
		if (!fRootDir.exists()) {
			fRootDir.mkdirs();
		} 
		JAXB.marshal(this, new File(fRootDir, this.getS() + ".xml"));
	}
	
}

主要的是JAXBunmarshal方法和JAXBmarshal方法。

 

测试类：

 

 

package utils;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;

import javax.xml.bind.JAXBException;

public class JAXBTest {

    public static void main(String[] args) throws FileNotFoundException, JAXBException {
        List<Integer> testList;
        {
            Test test = new Test();
            test.setB(true);
            test.setI(5);
            test.setS("wo");
            testList = new ArrayList<Integer>();
            for (int i = 0; i < 3; i++) {
                testList.add(i);
            }
            test.setList(testList);
            //把test类转化成xml文件，当然也可以指定成outputstream,writer,string，可以参考API
            test.JAXBmarshal(new File("c://"));
        }
        System.out.println("=================================");
        {
            //把xml文件转换成test类
            Test test = Test.JAXBunmarshal(new File("c://wo1.xml"));
            System.out.println(test.getI());
            System.out.println(test.getS());
            for (int i = 0; i < test.getList().size(); i++) {
                System.out.println(test.getList().get(i));
            }
        }

    }
}