com.taotao.cloud.useragent.servlet.UserAgentResolver Maven / Gradle / Ivy

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/*
 * Copyright (c) 2020-2030, Shuigedeng ([email protected] & https://blog.taotaocloud.top/).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.taotao.cloud.useragent.servlet;

import com.taotao.cloud.common.utils.servlet.RequestUtils;
import com.taotao.cloud.useragent.annotation.UserAgentInfo;
import com.taotao.cloud.useragent.domain.UserAgent;
import com.taotao.cloud.useragent.helper.UserAgentHelper;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.core.MethodParameter;
import org.springframework.http.HttpHeaders;
import org.springframework.lang.NonNull;
import org.springframework.util.Assert;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

/**
 * 
 * AbstractUserAgentHandlerMethodArgumentResolver
 * 
 *
 * @author shuigedeng
 * @version 2023.04
 * @since 2023-06-15 09:21:09
 */
public class UserAgentResolver implements HandlerMethodArgumentResolver {

    @Override
    public final boolean supportsParameter(MethodParameter parameter) {
        return parameter.hasParameterAnnotation(UserAgentInfo.class);
    }

    @Override
    public final Object resolveArgument(
            @NonNull MethodParameter parameter,
            ModelAndViewContainer mavContainer,
            @NonNull NativeWebRequest webRequest,
            WebDataBinderFactory binderFactory) {
        UserAgent agentContext = UserAgentContextHolder.getUserAgentContext();
        if (agentContext == null) {
            HttpServletRequest request = webRequest.getNativeRequest(HttpServletRequest.class);
            Assert.notNull(request, "request not be null!");
            HttpHeaders headers = RequestUtils.headers(request);
            agentContext = UserAgentHelper.convert(headers);
            UserAgentContextHolder.setUserAgentContext(agentContext);
        }
        return agentContext;
    }
}