oracle 数据库base64位转码解码

oracle 转码函数

CREATE OR REPLACE FUNCTION base64decode(p_clob CLOB)
RETURN CLOB
IS
l_blob  CLOB;
l_raw RAW(32767);
l_amt NUMBER := 7700;
l_offset NUMBER := 1;
l_temp VARCHAR2(32767);
BEGIN
 BEGIN
 DBMS_LOB.createtemporary (l_blob, FALSE, DBMS_LOB.CALL);
  LOOP
    DBMS_LOB.read(p_clob, l_amt, l_offset, l_temp);
    l_offset := l_offset + l_amt;
    l_raw := UTL_ENCODE.base64_decode(UTL_RAW.cast_to_raw(l_temp));
    DBMS_LOB.append (l_blob, TO_CLOB(utl_raw.cast_to_varchar2(l_raw)));
  END LOOP;
 EXCEPTION
 WHEN NO_DATA_FOUND THEN
    NULL;
  END;
 RETURN l_blob;
END;

oracle 解码函数：

CREATE OR REPLACE FUNCTION base64encode(p_clob CLOB)
RETURN CLOB
IS
l_blob  CLOB;
l_raw RAW(32767);
l_amt NUMBER := 7700;
l_offset NUMBER := 1;
l_temp VARCHAR2(32767);
BEGIN
 BEGIN
 DBMS_LOB.createtemporary (l_blob, FALSE, DBMS_LOB.CALL);
  LOOP
    DBMS_LOB.read(p_clob, l_amt, l_offset, l_temp);
    l_offset := l_offset + l_amt;
    l_raw := UTL_ENCODE.base64_encode(UTL_RAW.cast_to_raw(l_temp));
    DBMS_LOB.append (l_blob, TO_CLOB(utl_raw.cast_to_varchar2(l_raw)));
  END LOOP;
 EXCEPTION
 WHEN NO_DATA_FOUND THEN
    NULL;
  END;
 RETURN l_blob;
END;

java  解码函数

public  String decodeStr(String encodeStr){
        byte[] b=encodeStr.getBytes();
        Base64 base64=new Base64();
        b=base64.decode(b);        
        String s="";
try {
s = new String(b,"GBK");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
        logger.debug("value-------------------------------------:"+s);
        return s;
    }