通过重写方法提高可用性，在此用作对多种不同要求的字段校验

废话少说，放码出来。

and(不得不说，我这种菜鸟备甩了三条街啊)

因为存在多个字段，而且每个字段的校验规则不一样，正常的思路是写多个方法多每一个字段进行校验。这样就会调用太多方法。而通过重写方法则可以让方法自动适应，在程序上调用同一个方法即可。

//字段校验总引用public BaseResp validateFileUploadReq(Integer initDate, String exchangeCode,String fileType, String filePath, String fileName,String reissueFlag, String fileMd5, String busiDatetime){BaseResp resp = new BaseResp();ValidateParamResult paramResult = new ValidateParamResult();paramResult.excValidate("业务日期", initDate);paramResult.excValidate("交易所编号", exchangeCode, 32);paramResult.excValidate("文件类型", fileType, 1);paramResult.excValidate("文件路径", filePath, 255);paramResult.excValidate("文件名称", fileName, 255);paramResult.excValidate("重发标志", reissueFlag, 1);paramResult.excValidate("文件MD5码", fileMd5, 64);paramResult.excValidate("业务日期时间", busiDatetime, 14,14);if (!paramResult.isValidateSuccess()) {resp.setErrorNo(ClearExceptionConstants.ERROR_NO_PARAMS_ERROR, paramResult.toString());}return resp;}//默认的多个字段校验方法(通过重写)public void putErrorField(String field, Boolean isEmpty, Integer minLen, Integer maxLen) {if (StringUtils.isBlank(field)) {return;}if (errorFields == null) {errorFields = new ArrayList<Map<String,Object>>();}Map<String, Object> map = new HashMap<String, Object>();errorFields.add(map);if (isEmpty) {map.put("field", field);map.put("emptyValidate", "该值不能为空");}if (minLen != null) {map.put("field", field);map.put("minValidate", "该值长度不能小于" + minLen + "位");}if (maxLen != null) {map.put("field", field);map.put("maxValidate", "该值长度不能大于" + maxLen + "位");}if (map.containsKey("field")) {this.flag = Integer.valueOf(FundDictEntryConstants.RESP_FLAG_SYSEXCEPTION);}}/** *  * @param field 校验字段别名 * @param val 校验字段值 * @param isValidateEmpty 是否做非空校验 * @param minLen 最小长度值 * @param maxLen 最大长度值 */public void excValidate(String field, Object val, Boolean isValidateEmpty, Integer minLen, Integer maxLen){if (isValidateEmpty == null) {isValidateEmpty = false;}if (isValidateEmpty && (val == null || (val instanceof String && StringUtils.isEmpty((String)val)))) {putErrorField(field);return;}if (!isValidateEmpty && val == null) {minLen = null;maxLen = null;}else if (val instanceof String) {if (minLen != null && ((String) val).length() >= minLen) {minLen = null;}if (maxLen != null && ((String) val).length() <= maxLen) { maxLen = null;}}else if (val instanceof Long) {if (minLen != null && ((Long) val).compareTo(Long.valueOf((long) Math.pow(10, minLen - 1))) >= 0) {minLen = null;}if (maxLen != null && ((Long) val).compareTo(Long.valueOf((long) Math.pow(10, maxLen))) < 0) {maxLen = null;}}else {minLen = null;maxLen = null;}putErrorField(field, false, minLen, maxLen);}/** *  * @param field 校验字段别名 * @param val 校验字段值 * @param isValidateEmpty 是否做非空校验 * @param maxLen 最大长度值 */public void excValidate(String field, Object val, Boolean isValidateEmpty, Integer maxLen){excValidate(field, val, isValidateEmpty, null, maxLen);}/** * 默认加上非空校验 * @param field 校验字段别名 * @param val 校验字段值 * @param minLen 最小长度值 * @param maxLen 最大长度值 */public void excValidate(String field, Object val, Integer minLen, Integer maxLen){excValidate(field, val, true, minLen, maxLen);}/** * 默认加上非空校验 * @param field 校验字段别名 * @param val 校验字段值 * @param maxLen 最大长度值 */public void excValidate(String field, Object val, Integer maxLen){excValidate(field, val, true, null, maxLen);}/** * 做非空校验 * @param field 校验字段别名 * @param val 校验字段值 */public void excValidate(String field, Object val){excValidate(field, val, true, null, null);}@Overridepublic String toString() {StringBuilder stringBuilder = new StringBuilder();if (CollectionUtils.isNotEmpty(errorFields)) {stringBuilder.append("[");for (Map<String, Object> temp : errorFields) {if (!temp.containsKey("field")) {continue;}stringBuilder.append("|" + temp.get("field") + ":");if (temp.containsKey("emptyValidate")) {stringBuilder.append(temp.get("emptyValidate") + ";");}if (temp.containsKey("minValidate")) {stringBuilder.append(temp.get("minValidate") + ";");}if (temp.containsKey("maxValidate")) {stringBuilder.append(temp.get("maxValidate") + ";");}stringBuilder.append("|");}stringBuilder.append("]");}return stringBuilder.toString();}