org.unique.web.core.WebContext Maven / Gradle / Ivy

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/**
 * Copyright (c) 2014-2015, biezhi 王爵 ([email protected])
 *
 * 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 org.unique.web.core;

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

/**
 * 全局的WeContext
 * @author biezhi
 * @since 1.0
 */
public final class WebContext {

    private static final ThreadLocal actionContextThreadLocal = new ThreadLocal();
    
    private ServletContext context;
    private HttpServletRequest request;
    private HttpServletResponse response;
    
    /**
     * get ServletContext
     */
    public static ServletContext getServletContext() {
        return single().context;
    }

    /**
     * get Request
     */
    public static HttpServletRequest getHttpServletRequest() {
        return single().request;
    }

    /**
     * get Response
     */
    public static HttpServletResponse getHttpServletResponse() {
        return single().response;
    }

    /**
     * get HttpSession
     */
    public static HttpSession getHttpSession() {
        return single().request.getSession();
    }

    /**
     * get ActionContext
     */
    private static WebContext single() {
        WebContext actionContext = actionContextThreadLocal.get();
        if(null != actionContext){
            return actionContext;
        }
        actionContextThreadLocal.set(new WebContext());
        return actionContextThreadLocal.get();
    }
    
    public static void remove(){
    	actionContextThreadLocal.remove();
    }
    
    public static String getContextPath(){
        return single().context.getContextPath();
    }
    
    /**
     * 设置WebUtil的根路径
     * @param context ServletContext对象
     */
    public static void setActionContext(ServletContext context){
        single().context = context;
    }
    
    /**
     * 设置context对象到ActionContext中
     * @param context ServletContext对象
     * @param request HttpServletRequest对象
     * @param response HttpServletResponse对象
     */
    public static void setActionContext(ServletContext context, HttpServletRequest request, HttpServletResponse response) {
    	WebContext actionContext = single();
    	actionContext.context = context;
    	actionContext.request = request;
    	actionContext.response = response;
    }

    /**
     * 移除ActionContext
     */
    static void removeActionContext() {
        actionContextThreadLocal.remove();
    }
}