com.lodsve.boot.component.webmvc.resolver.WebResourceDataHandlerMethodArgumentResolver Maven / Gradle / Ivy

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.lodsve.boot.component.webmvc.resolver;

import com.lodsve.boot.json.JsonConverter;
import org.springframework.core.MethodParameter;
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;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 为controller注入参数WebInput/WebOutput/FileWebInput
 *
 * @author sunhao([email protected])
 * @date 15/7/7 上午9:20
 */
public class WebResourceDataHandlerMethodArgumentResolver implements HandlerMethodArgumentResolver {
    private final JsonConverter jsonConverter;

    public WebResourceDataHandlerMethodArgumentResolver(JsonConverter jsonConverter) {
        this.jsonConverter = jsonConverter;
    }

    @Override
    public boolean supportsParameter(MethodParameter parameter) {
        Class paramType = parameter.getParameterType();
        return WebInput.class.equals(paramType) || WebOutput.class.equals(paramType) || FileWebInput.class.equals(paramType);
    }

    @Override
    public Object resolveArgument(MethodParameter parameter, ModelAndViewContainer mavContainer, NativeWebRequest webRequest, WebDataBinderFactory binderFactory) throws Exception {
        HttpServletRequest request = webRequest.getNativeRequest(HttpServletRequest.class);
        HttpServletResponse response = webRequest.getNativeResponse(HttpServletResponse.class);

        Class paramType = parameter.getParameterType();

        if (paramType.equals(WebInput.class)) {
            return new WebInput(request);
        } else if (paramType.equals(WebOutput.class)) {
            return new WebOutput(response, jsonConverter);
        } else if (paramType.equals(FileWebInput.class)) {
            return new FileWebInput(request);
        }

        return null;
    }
}