protected String convert(final String originalBody, final CryptorRuleHandler ruleHandle, final ServerWebExchange exchange) {
        String converted = MapTypeEnum.mapType(ruleHandle.getMapType()).convert(originalBody, ruleHandle, exchange);
        if (Objects.isNull(converted)) {
            return fieldErrorParse(originalBody, exchange);
        }
        return converted;
    }
field parse error diff handler.

@param originalBody originalBody
@param exchange exchange
@return String
shenyu-plugin/shenyu-plugin-security/shenyu-plugin-cryptor/src/main/java/org/apache/shenyu/plugin/cryptor/plugin/AbstractCryptorPlugin.java