com.feilong.component.download.DefaultRequestFileCreatorDetector Maven / Gradle / Ivy
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feilong is a suite of core and expanded libraries that include utility classes, http, excel,cvs, io classes, and much much more.
/*
* Copyright (C) 2008 feilong
*
* 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
*
* http://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.feilong.component.download;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang3.Validate;
import org.springframework.beans.factory.annotation.Autowired;
import com.feilong.context.filecreator.RequestFileCreator;
import com.feilong.context.filecreator.RequestFileCreatorDetector;
/**
* 默认基于request请求的标识参数名字来,来探测使用的{@link RequestFileCreator}.
*
* @author feilong
* @since 3.0.0
*/
public class DefaultRequestFileCreatorDetector implements RequestFileCreatorDetector{
/** The request file creator map. */
@Autowired
private Map requestFileCreatorMap;
/** 文件标识 参数名字. */
private String identifyParamName = "key";
//---------------------------------------------------------------
/**
* Detect.
*
* @param request
* the request
* @return the request file creator
*/
@Override
public RequestFileCreator detect(HttpServletRequest request){
//取到标识的值
String identifyValue = request.getParameter(identifyParamName);
Validate.notBlank(identifyValue, "key can't be blank!");
//基于值 探测出RequestFileCreator
RequestFileCreator requestFileCreator = requestFileCreatorMap.get(identifyValue);
Validate.notNull(
requestFileCreator,
"by identifyValue:%s,can't find requestFileCreator!Either the corresponding requestfilecreator is not configured, or the parameter:[%s] is wrong",
identifyValue,
identifyParamName);
return requestFileCreator;
}
//---------------------------------------------------------------
/**
* 设置 文件标识 参数名字.
*
* @param fileIdentifyParamName
* the fileIdentifyParamName to set
*/
public void setIdentifyParamName(String fileIdentifyParamName){
this.identifyParamName = fileIdentifyParamName;
}
}