目录

//base64转BLOB

 咕泡学院的关于base64的代码：

自己在项目里写的BLOB转base64 与 base64 转BLOB

//BLOB转base64

BLOB转base64后末尾会新添加两个字符与原来的base64字符串不一样，但是不影响转换为图片

//BLOB转base64
    public String BLOBtobase64(ComShanDong ComShanDongall) {

        byte[] blobImage = ComShanDongall.getBimage();
//        String result = "";
        String result = "";
        if (null != blobImage) {
            try {
    //                InputStream msgContent = blobImage.getBinaryStream();
                //结尾多了两个字母
//                 result =  Base64.getEncoder().encodeToString(blobImage);
                result =  Base64.getEncoder().encodeToString(blobImage);

                //结尾多了两个字母
//                result =  new String(blobImage,(int) blobImage.length, Integer.parseInt("UTF-8"));
    //             result =  new String(blobImage,(int) blobImage.length, Integer.parseInt("UTF-8"));
    //                         .encodeToString(blobImage).;
//                    ByteArrayOutputStream output = new ByteArrayOutputStream();
//                    byte[] buffer = new byte[100];
//                    int n = 0;
//
//                    InputStream msgContent = blobImage.getBinaryStream();
//                    while (-1 != (n = msgContent.read(buffer))) {
//                        output.write(buffer, 0, n);
//                    }
//                    result = new BASE64Encoder().encode(output.toByteArray());
//                    output.close();
    //                comsd.setCimage(result);

            } catch (Exception e) {
                e.printStackTrace();
    //                return "erro";
    //                resp.setCode("1");
    //                resp.setMessage("失败");

            }
    }
    return result;
}

//base64转BLOB

//base64转BLOB
    public byte[] Base64toBLOB(ComShanDong ComShanDongall) {

        String clobImage = ComShanDongall.getImage();
        byte[] b = null;
        if (null != clobImage) {
            BASE64Decoder decode = new BASE64Decoder();
            try {

                b = decode.decodeBuffer(clobImage);
//                Configuration configure = new Configuration().configure();
//                SessionFactory sessionFactory = configure.buildSessionFactory();
//                Session session = sessionFactory.openSession();
//                Blob blob = session.getLobHelper().createBlob(bytes);
//                String string = cvtBlobToBs64String(blob);
//                System.out.println(string);
//                return blob;

            }  catch (IOException e) {
                e.printStackTrace();
            }
        }
        return b;
    }

 咕泡学院的关于base64的代码：

import jdk.nashorn.internal.runtime.regexp.joni.Regex;
import org.omg.IOP.Encoding;
import sun.misc.BASE64Decoder;
import sun.security.util.Length;

import javax.sound.sampled.AudioFormat;
import java.beans.Encoder;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Base64;

public class TEST {
    public static byte[] getStringImage(String base64String) throws IOException {
        BASE64Decoder decoder = new BASE64Decoder();
        //将将base64格式的字符串转换为byte[]   ,byte[]是字节类型的数据
        return base64String != null ? decoder.decodeBuffer(base64String) : null;
    }

    public static void main(String[] args) throws IOException {
        //将正常的字符串转换为base64格式的数据类型，编码为utf-8
        String base64encodedString = Base64.getEncoder().encodeToString("升职加薪".getBytes("utf-8"));  //GB2312
        System.out.println("Base64 编码字符串 (基本) :" + base64encodedString);
        BASE64Decoder decoder = new BASE64Decoder();
        //将base64格式的数据：“yf3WsLzT0L0=”通过decoder解码成byte[]字节数据，再将byte[]数据通过new String()方法转换成GB2312编码的正常的汉字字符串，输出的"c"的值就是：升职加薪
        String c = new String(decoder.decodeBuffer("yf3WsLzT0L0="),"GB2312");
        System.out.println("C"+ c);
//        base64encodedString = base64encodedString.substring(0, base64encodedString.length()-1);
//        A[B@1b6d3586
        //将base64格式的字符串  转换为byte[]
        byte [] b = getStringImage(base64encodedString);
        System.out.println("A"+ Arrays.toString(b));
        //将byte[]类型的数据转换成base64位的编码
        String result =  Base64.getEncoder().encodeToString(b);
        System.out.println("aaa:"+result);


    }



}

自己在项目里写的BLOB转base64 与 base64 转BLOB

 

import jdk.nashorn.internal.runtime.regexp.joni.Regex;
import org.omg.IOP.Encoding;
import sun.misc.BASE64Decoder;
import sun.security.util.Length;

import javax.sound.sampled.AudioFormat;
import java.beans.Encoder;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Base64;

public class TEST {
public static byte[] getStringImage(String base64String) throws IOException {
BASE64Decoder decoder = new BASE64Decoder();
return base64String != null ? decoder.decodeBuffer(base64String) : null;
}

public static void main(String[] args) throws IOException {
String base64encodedString = Base64.getEncoder().encodeToString("升职加薪".getBytes("utf-8")); //GB2312
System.out.println("Base64 编码字符串 (基本) :" + base64encodedString);
BASE64Decoder decoder = new BASE64Decoder();
String c = new String(decoder.decodeBuffer("yf3WsLzT0L0="),"GB2312");
System.out.println("C"+ c);
// base64encodedString = base64encodedString.substring(0, base64encodedString.length()-1);
// A[B@1b6d3586
byte [] b = getStringImage(base64encodedString);
System.out.println("A"+ Arrays.toString(b));
String result = Base64.getEncoder().encodeToString(b);
System.out.println("aaa:"+result);


}

 

}