xml 二进制数据 传输处理

import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.input.DOMBuilder;
import org.jdom.output.XMLOutputter;
import org.apache.xerces.impl.dv.util.Base64;
import java.io.*;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class My64DomTest {

public static void writeXml() {
String content = "";
try {
//将文件读入内存字节数组
InputStream in = new FileInputStream("e:/test.JPG");
byte[] data = new byte[1024];
int len = 0;
ByteArrayOutputStream baos = new ByteArrayOutputStream(2048);
while ((len = in.read(data)) > 0) {
baos.write(data,len);
}
in.close();
//对内存数据进行64编码
BASE64Encoder be = new BASE64Encoder();
content = be.encode(baos.toByteArray());
} catch (IOException ex) {
System.out.println("++++++++++++++ Get inputStream error +++++++++++++++++");
ex.printStackTrace();
}
Element carElement = new Element("car");
Document myDocument = new Document(carElement);
Element make = new Element("make");
make.addContent(content);
carElement.addContent(make);
//将编码后的数据生成xml文件输出
try {
XMLOutputter outputter = new XMLOutputter(" ",true);
FileOutputStream out = new FileOutputStream("e:/test.xml");
outputter.output(myDocument,out);
} catch (java.io.IOException e) {
e.printStackTrace();
}

}

public static void readXml() {
try {
//这里不要使用SAXBuilder,否则将很慢
//读入xml文件数据
DOMBuilder builder = new DOMBuilder();
Document anotherDocument = builder.build(new File("e:/test.xml"));
Element carElement = anotherDocument.getRootElement();
Element make = carElement.getChild("make");
String aa = make.getText();
//BASE64Decoder bd = new BASE64Decoder();
//将图片数据转码后写入文件
try {
byte[] bbs = Base64.decode(aa);
FileOutputStream out = new FileOutputStream("e:/test1.jpg");
out.write(bbs);
out.close();
} catch (IOException e) {
}
} catch (JDOMException e) {
e.printStackTrace();
} catch (NullPointerException e) {
e.printStackTrace();
}

}

}

特别注意注释地方的处理。验证通过完全可以使用。

关于xml的传输和处理的问题虽然有了一定的处理经验但还是应该抽时间在深入的研究一下！