java 编写 Oracle函数create or replace and compile java source named base64 aspackage cn.com.pansky.
java 编写 Oracle函数
create or replace and compile java source named base64 as package cn.com.pansky.util; /** * This is a base 64 conversion class based on RFC 2045 6.8. * Base64 Content-Tranfser-Encoding... * @version 1.0 */ public final class Base64 { static private final int BASELENGTH = 255; static private final int LOOKUPLENGTH = 64; static private final int TWENTYFOURBITGROUP = 24; static private final int EIGHTBIT = 8; static private final int SIXTEENBIT = 16; static private final int SIXBIT = 6; static private final int FOURBYTE = 4; static private final int SIGN = -128; static private final char PAD = '='; static private final boolean fDebug = false; static final private byte [] base64Alphabet = new byte[BASELENGTH]; static final private char [] lookUpBase64Alphabet = new char[LOOKUPLENGTH]; static { for (int i = 0; i<BASELENGTH; i++) { base64Alphabet[i] = -1; } for (int i = 'Z'; i >= 'A'; i--) { base64Alphabet[i] = (byte) (i-'A'); } for (int i = 'z'; i>= 'a'; i--) { base64Alphabet[i] = (byte) ( i-'a' + 26); } for (int i = '9'; i >= '0'; i--) { base64Alphabet[i] = (byte) (i-'0' + 52); } base64Alphabet['+'] = 62; base64Alphabet['/'] = 63; for (int i = 0; i<=25; i++) lookUpBase64Alphabet[i] = (char)('A'+i); for (int i = 26, j = 0; i<=51; i++, j++) lookUpBase64Alphabet[i] = (char)('a'+ j); for (int i = 52, j = 0; i<=61; i++, j++) lookUpBase64Alphabet[i] = (char)('0' + j); lookUpBase64Alphabet[62] = (char)'+'; lookUpBase64Alphabet[63] = (char)'/'; } protected static boolean isWhiteSpace(char octect) { return (octect == 0x20 || octect == 0xd || octect == 0xa || octect == 0x9); } protected static boolean isPad(char octect) { return (octect == PAD); } protected static boolean isData(char octect) { return (base64Alphabet[octect] != -1); } protected static boolean isBase64(char octect) { return (isWhiteSpace(octect) || isPad(octect) || isData(octect)); } public static String encode(String str) { if(str==null || str.equals("")) return null; return encode(str.getBytes()); } /** * Encodes hex octects into Base64 * * @param binaryData Array containing binaryData * @return Encoded Base64 array */ public static String encode(byte[] binaryData) { if (binaryData == null) return null; int lengthDataBits = binaryData.length*EIGHTBIT; if (lengthDataBits == 0) { return ""; } int fewerThan24bits = lengthDataBits%TWENTYFOURBITGROUP; int numberTriplets = lengthDataBits/TWENTYFOURBITGROUP; int numberQuartet = fewerThan24bits != 0 ? numberTriplets+1 : numberTriplets; int numberLines = (numberQuartet-1)/19+1; char encodedData[] = null; encodedData = new char[numberQuartet*4+numberLines]; byte k=0, l=0, b1=0,b2=0,b3=0; int encodedIndex = 0; int dataIndex = 0; int i = 0; if (fDebug) { System.out.println("number of triplets = " + numberTriplets ); } for (int line = 0; line < numberLines-1; line++) { for (int quartet = 0; quartet < 19; quartet++) { b1 = binaryData[dataIndex++]; b2 = binaryData[dataIndex++]; b3 = binaryData[dataIndex++]; if (fDebug) { System.out.println( "b1= " + b1 +", b2= " + b2 + ", b3= " + b3 ); } l = (byte)(b2 & 0x0f); k = (byte)(b1 & 0x03); byte val1 = ((b1 & SIGN)==0)?(byte)(b1>>2):(byte)((b1)>>2^0xc0); byte val2 = ((b2 & SIGN)==0)?(byte)(b2>>4):(byte)((b2)>>4^0xf0); byte val3 = ((b3 & SIGN)==0)?(byte)(b3>>6):(byte)((b3)>>6^0xfc); if (fDebug) { System.out.println( "val2 = " + val2 ); System.out.println( "k4 = " + (k<<4)); System.out.println( "vak = " + (val2 | (k<<4))); } encodedData[encodedIndex++] = lookUpBase64Alphabet[ val1 ]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ val2 | ( k<<4 )]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ (l <<2 ) | val3 ]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ b3 & 0x3f ]; i++; } encodedData[encodedIndex++] = 0xa; } for (; i<numberTriplets; i++) { b1 = binaryData[dataIndex++]; b2 = binaryData[dataIndex++]; b3 = binaryData[dataIndex++]; if (fDebug) { System.out.println( "b1= " + b1 +", b2= " + b2 + ", b3= " + b3 ); } l = (byte)(b2 & 0x0f); k = (byte)(b1 & 0x03); byte val1 = ((b1 & SIGN)==0)?(byte)(b1>>2):(byte)((b1)>>2^0xc0); byte val2 = ((b2 & SIGN)==0)?(byte)(b2>>4):(byte)((b2)>>4^0xf0); byte val3 = ((b3 & SIGN)==0)?(byte)(b3>>6):(byte)((b3)>>6^0xfc); if (fDebug) { System.out.println( "val2 = " + val2 ); System.out.println( "k4 = " + (k<<4)); System.out.println( "vak = " + (val2 | (k<<4))); } encodedData[encodedIndex++] = lookUpBase64Alphabet[ val1 ]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ val2 | ( k<<4 )]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ (l <<2 ) | val3 ]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ b3 & 0x3f ]; } // form integral number of 6-bit groups if (fewerThan24bits == EIGHTBIT) { b1 = binaryData[dataIndex]; k = (byte) ( b1 &0x03 ); if (fDebug) { System.out.println("b1=" + b1); System.out.println("b1<<2 = " + (b1>>2) ); } byte val1 = ((b1 & SIGN)==0)?(byte)(b1>>2):(byte)((b1)>>2^0xc0); encodedData[encodedIndex++] = lookUpBase64Alphabet[ val1 ]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ k<<4 ]; encodedData[encodedIndex++] = PAD; encodedData[encodedIndex++] = PAD; } else if (fewerThan24bits == SIXTEENBIT) { b1 = binaryData[dataIndex]; b2 = binaryData[dataIndex +1 ]; l = ( byte ) ( b2 &0x0f ); k = ( byte ) ( b1 &0x03 ); byte val1 = ((b1 & SIGN)==0)?(byte)(b1>>2):(byte)((b1)>>2^0xc0); byte val2 = ((b2 & SIGN)==0)?(byte)(b2>>4):(byte)((b2)>>4^0xf0); encodedData[encodedIndex++] = lookUpBase64Alphabet[ val1 ]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ val2 | ( k<<4 )]; encodedData[encodedIndex++] = lookUpBase64Alphabet[ l<<2 ]; encodedData[encodedIndex++] = PAD; } encodedData[encodedIndex] = 0xa; return new String(encodedData); } /** * Decodes Base64 data into octects * * @param binaryData Byte array containing Base64 data * @return Array containind decoded data. */ public static byte[] decode(String encoded) { if (encoded == null) return null; char[] base64Data = encoded.toCharArray(); // remove white spaces int len = removeWhiteSpace(base64Data); if (len%FOURBYTE != 0) { return null;//should be divisible by four } int numberQuadruple = (len/FOURBYTE ); if (numberQuadruple == 0) return new byte[0]; byte decodedData[] = null; byte b1=0,b2=0,b3=0, b4=0, marker0=0, marker1=0; char d1=0,d2=0,d3=0,d4=0; int i = 0; int encodedIndex = 0; int dataIndex = 0; decodedData = new byte[ (numberQuadruple)*3]; for (; i<numberQuadruple-1; i++) { if (!isData( (d1 = base64Data[dataIndex++]) )|| !isData( (d2 = base64Data[dataIndex++]) )|| !isData( (d3 = base64Data[dataIndex++]) )|| !isData( (d4 = base64Data[dataIndex++]) )) return null;//if found "no data" just return null b1 = base64Alphabet[d1]; b2 = base64Alphabet[d2]; b3 = base64Alphabet[d3]; b4 = base64Alphabet[d4]; decodedData[encodedIndex++] = (byte)( b1 <<2 | b2>>4 ) ; decodedData[encodedIndex++] = (byte)(((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ); decodedData[encodedIndex++] = (byte)( b3<<6 | b4 ); } if (!isData( (d1 = base64Data[dataIndex++]) ) || !isData( (d2 = base64Data[dataIndex++]) )) { return null;//if found "no data" just return null } b1 = base64Alphabet[d1]; b2 = base64Alphabet[d2]; d3 = base64Data[dataIndex++]; d4 = base64Data[dataIndex++]; if (!isData( (d3 ) ) || !isData( (d4 ) )) {//Check if they are PAD characters if (isPad( d3 ) && isPad( d4)) { //Two PAD e.g. 3c[Pad][Pad] if ((b2 & 0xf) != 0)//last 4 bits should be zero return null; byte[] tmp = new byte[ i*3 + 1 ]; System.arraycopy( decodedData, 0, tmp, 0, i*3 ); tmp[encodedIndex] = (byte)( b1 <<2 | b2>>4 ) ; return tmp; } else if (!isPad( d3) && isPad(d4)) { //One PAD e.g. 3cQ[Pad] b3 = base64Alphabet[ d3 ]; if ((b3 & 0x3 ) != 0)//last 2 bits should be zero return null; byte[] tmp = new byte[ i*3 + 2 ]; System.arraycopy( decodedData, 0, tmp, 0, i*3 ); tmp[encodedIndex++] = (byte)( b1 <<2 | b2>>4 ); tmp[encodedIndex] = (byte)(((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ); return tmp; } else { return null;//an error like "3c[Pad]r", "3cdX", "3cXd", "3cXX" where X is non data } } else { //No PAD e.g 3cQl b3 = base64Alphabet[ d3 ]; b4 = base64Alphabet[ d4 ]; decodedData[encodedIndex++] = (byte)( b1 <<2 | b2>>4 ) ; decodedData[encodedIndex++] = (byte)(((b2 & 0xf)<<4 ) |( (b3>>2) & 0xf) ); decodedData[encodedIndex++] = (byte)( b3<<6 | b4 ); } return decodedData; } /** * remove WhiteSpace from MIME containing encoded Base64 data. * * @param data the byte array of base64 data (with WS) * @return the new length */ protected static int removeWhiteSpace(char[] data) { if (data == null) return 0; // count characters that's not whitespace int newSize = 0; int len = data.length; for (int i = 0; i < len; i++) { if (!isWhiteSpace(data[i])) data[newSize++] = data[i]; } return newSize; } } create or replace and compile java source named ldapconvert as package cn.com.pansky.util; /** * 这是把中文字符串转换成LDAP可导入格式的转换类 * LDAP可导入格式是先按UTF-8取字节，然后对字节进行BASE64编码 * * @version 1.0 * @author Sheng Youfu */ public class LDAPConvert { private LDAPConvert() { } /** * 取按UTF-8编码方式字码数组并进行Base64编码 * @param str: 待处理字符串 * @return 处理后的ASCII字符串 */ public static final String encode(String str) { if (str == null || str.length() == 0) { return null; } else { try { Base64 b64 = new Base64(); byte[] tempByte = str.getBytes("UTF-8"); String tempStr = b64.encode(tempByte); return tempStr; }catch(java.io.UnsupportedEncodingException ex) { return "UnsuppoertedEncodingException"; } } } /** * 对已经编码过的字符串进行解码，先进行Base64解码得到UTF-8字节数组，然后再转换成字符串 * @param str: 待解码的字符串 * @return 解码后的字符串 */ public static final String decode(String str) { if (str == null || str.length() == 0) { return null; } else { try { Base64 b64 = new Base64(); byte[] tempByte = b64.decode(str); String tempStr = new String(tempByte, "UTF-8"); return tempStr; }catch(java.io.UnsupportedEncodingException ex) { return "UnsuppoertedEncodingException"; } } } } 第三步： 把转换类中的两个方法封装成Oracle函数：
--编码函数 CREATE OR REPLACE FUNCTION LDAPEncode (str VARCHAR2) RETURN VARCHAR2 as language java name 'cn.com.pansky.util.LDAPConvert.encode(java.lang.String) return java.lang.String'; --解码函数 CREATE OR REPLACE FUNCTION LDAPDecode (str VARCHAR2) RETURN VARCHAR2 as language java name 'cn.com.pansky.util.LDAPConvert.decode(java.lang.String) return java.lang.String';
select ' dn: uid=000000' || uid || ',cn=nsr,ou=People,dc=xmds4,dc=ldap objectClass: top objectClass: person objectClass: organizationalPerson objectClass: inetOrgPerson objectClass: mailrecipient objectClass: nsmessagingserveruser cn:: ' || LDAPENCODE(rtrim(username)) || 'givenName: 000000' || uid || ' mail: 000000' || uid || '@mails.xmds.gov mailDeliveryOption: mailbox mailHost: mails.xmds.gov nsmsgDisallowAccess: imap http sn:: ' || LDAPENCODE(rtrim(username)) || 'uid: 000000' || uid || ' employeeType: dwsbh userPassword:: e1NTSEF9K01YbzNLcGE1cmNyeVRCeWpqYzI5eUxRWnJLWmFldFhFR0JrWnc9PQ== ' from DJ_QYFRJBXX T where T.DJBLX_DM='10' order by uid
转载：http://www.iteye.com/topic/38233