aop對請求後端的參數修改_Spring Aop 修改目标方法參數和傳回值

@Component("changeIdNoAopHandler")public classChangeIdNoAopHandler {private static Logger logger = LoggerFactory.getLogger(ChangeIdNoAopHandler.class);private static final String SECRET_KEY = "12345678"; //秘鑰

private String HANDLE_FIELD_NAME = "idNo"; //加密解密字段

private static final String ENCRYPT_FLAG = "encrypt"; //加密辨別 (判斷對值進行加密或者解密的操作)

private static final String DECRYPT_FLAG = "decrypt"; //解密辨別(判斷對值進行加密或者解密的操作)

@AutowiredprivateInetxValDualService netxValDualService;

@AutowiredprivateIThemisCryptoIdnoService themisCryptoIdnoService;

public Object parameterCheck(ProceedingJoinPoint joinPoint) throwsThrowable{

logger.info("開始執行aop方法修改參數。。。");

Object target= joinPoint.getTarget();//傳回被織入增強處理的目标對象 getThis：傳回AOP架構為目标對象生成的代理對象

Object[] args = joinPoint.getArgs(); //擷取目标對象方法參數//周遊參數 修改帶有idNo字段對象的值 (map list domain)

for(Object _obj : args) {try{

changValue(_obj,ENCRYPT_FLAG);//加密參數

}catch (Exception e) { //使用異常機制來驗證 _obj中 是否有idNo 字段

logger.error("修改目标方法參數字段值異常。目标類："

+target.getClass()+"方法："+joinPoint.getSignature().getName()+"修改的值："+_obj,e);

}

}//執行方法，以新的參數(如果不帶args就是用原先的參數；這裡帶不帶都可以是，上面方法擷取原先參數的引用做的修改)

Object returnValue =joinPoint.proceed(args);//若未設定，則不需要解密

if(!ObjectIsNullUtil.isNullOrEmpty(returnValue)){try{//修改

returnValue = changValue(returnValue,DECRYPT_FLAG); //解密參數

}catch (Exception e) { //使用異常機制來驗證 _obj中 是否有idNo 字段

logger.error("修改目标方法傳回值異常。目标類："

+target.getClass()+"方法："+joinPoint.getSignature().getName()+"修改的值："+returnValue,e);

}

}returnreturnValue;

}

private Object changValue(Object _obj, String flag) throwsException{//基本類型不作操作

if(_obj instanceofMap){

changeMapValue(_obj,flag);

}else if(_obj instanceofList){

@SuppressWarnings("unchecked")

List list = (List) _obj;for(Object obj : list) {if(obj instanceofMap){

changeMapValue(_obj,flag);

}else{

changObjectValue(_obj,flag);

}

}

}else{

changObjectValue(_obj,flag);

}return_obj;

}@SuppressWarnings("unchecked")private Object changeMapValue(Object _obj, String flag) throwsException{

Map map = (Map) _obj;if(map.containsKey(HANDLE_FIELD_NAME)){

Object fieldValue=map.get(HANDLE_FIELD_NAME);

String afterValue=crypto(fieldValue, flag);if(!ObjectIsNullUtil.isNullOrEmpty(afterValue)){

map.put(HANDLE_FIELD_NAME, afterValue);

}

}return_obj;

}

private Object changObjectValue(Object _obj, String flag) throwsException{

Class> resultClz =_obj.getClass();

Field[] fieldInfo= resultClz.getDeclaredFields(); //擷取class裡的所有字段 父類字段擷取不到 注：如果出現加密解密失敗 請先檢視idno是否在父類中

for(Field field : fieldInfo) {if(HANDLE_FIELD_NAME.equals(field.getName())){

field.setAccessible(true); //成員變量為private,故必須進行此操

Object fieldValue =field.get(_obj);

String afterValue=crypto(fieldValue, flag);if(!ObjectIsNullUtil.isNullOrEmpty(afterValue)){

field.set(_obj, afterValue);

}break;

}

}return_obj;

}

private String crypto(Object value,String flag) throwsException{if(ObjectIsNullUtil.isNullOrEmpty(value)){return null;

}//加密操作；加密之前先去查詢一下資料庫 有沒有 如果沒有 則insert

if(ENCRYPT_FLAG.equals(flag)) {

String encodeValue= Encryption.encode(SECRET_KEY, value.toString()); //加密

ThemisCryptoIdno idnoDomain = newThemisCryptoIdno();

idnoDomain.setCryptoIdno(encodeValue);

idnoDomain=themisCryptoIdnoService.selectOneByObject(idnoDomain);if(ObjectIsNullUtil.isNullOrEmpty(idnoDomain)){ //若空 則生成 seq 然後入庫 傳回seq

String tr_date =DateOperation.convertToDateStr2(DateOperation.currentTimeMills());//擷取有流水号

String inextValDual=netxValDualService.findIdNoSeq();//組流水：日期+ 7位流水 其他表儲存的就是這個idnoSeq

String idnoSeq=(tr_date+DateOperation.fill(inextValDual, '0', 7, true)).replaceAll("-", "");

idnoDomain= newThemisCryptoIdno();

idnoDomain.setOptTime(DateOperation.convertToDateStr1(DateOperation.currentTimeMills()));

idnoDomain.setCryptoIdno(encodeValue);

idnoDomain.setCryptoSeq(idnoSeq);

themisCryptoIdnoService.insert(idnoDomain);returnidnoSeq;

}else{ //不為空 直接傳回seq

returnidnoDomain.getCryptoSeq();

}

}else{ //解密操作 通過seq 查詢 然後解密傳回明文

ThemisCryptoIdno idnoDomain = newThemisCryptoIdno();

idnoDomain.setCryptoSeq(value.toString());

idnoDomain=themisCryptoIdnoService.selectOneByObject(idnoDomain);if(!ObjectIsNullUtil.isNullOrEmpty(idnoDomain)){return Encryption.decodeValue(SECRET_KEY, idnoDomain.getCryptoIdno()); //解密

}

}return null;

}public static void main(String[] args) throwsException {

System.out.println(Encryption.encode(SECRET_KEY,"142701197605091275"));

}

}