common_helper/src/main/java/com/xiongyingqi/jackson/impl/JavassistFilterPropertyHandler.java
private JsonEncoding getJsonEncoding(String characterEncoding) {
        for (JsonEncoding encoding : JsonEncoding.values()) {
            if (characterEncoding.equals(encoding.getJavaName())) {
                return encoding;
            }
        }
        return JsonEncoding.UTF8;
    }
private JsonEncoding getJsonEncoding(String characterEncoding) {
        for (JsonEncoding encoding : JsonEncoding.values()) {
            if (characterEncoding.equals(encoding.getJavaName())) {
                return encoding;
            }
        }
        return JsonEncoding.UTF8;
    }
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2013-10-25 下午12:29:58

@param characterEncoding
@return