java Base 64 编码

package

com.xbl.test;

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import

java.io.File;

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import

java.io.FileInputStream;

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import

java.io.FileOutputStream;

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import

sun.misc.BASE64Decoder;

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import

sun.misc.BASE64Encoder;

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public

class

File2Code
{

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/**

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*
<p>将文件转成base64 字符串</p>

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*
@param path 文件路径

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*
@return

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*
@throws Exception

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*/

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public

static

String
encodeBase64File(String path)

throws

Exception
{

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File
file =

new

File(path);

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FileInputStream
inputFile =

new

FileInputStream(file);

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byte

[]
buffer =

new

byte

[(

int

)file.length()];

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inputFile.read(buffer);

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inputFile.close();

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return

new

BASE64Encoder().encode(buffer);

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}

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/**

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*
<p>将base64字符解码保存文件</p>

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*
@param base64Code

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*
@param targetPath

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*
@throws Exception

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*/

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public

static

void

decoderBase64File(String
base64Code,String targetPath)

throws

Exception
{

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byte

[]
buffer =

new

BASE64Decoder().decodeBuffer(base64Code);

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FileOutputStream
out =

new

FileOutputStream(targetPath);

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out.write(buffer);

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out.close();

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}

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/**

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*
<p>将base64字符保存文本文件</p>

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*
@param base64Code

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*
@param targetPath

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*
@throws Exception

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*/

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public

static

void

toFile(String
base64Code,String targetPath)

throws

Exception
{

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byte

[]
buffer =base64Code.getBytes();

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FileOutputStream
out =

new

FileOutputStream(targetPath);

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out.write(buffer);

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out.close();

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}

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public

static

void

main(String[]
args) {

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try

{

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String
base64Code =encodeBase64File(

"D:\\1.jpg"

);

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System.out.println(base64Code);

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decoderBase64File(base64Code,

"D:\\2.jpg"

);

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toFile(base64Code,

"D:\\three.txt"

);   

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}

catch

(Exception
e) {

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e.printStackTrace();

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}

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}

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}