mvc:resource靜態資源攔截處理

1. xml配置

<mvc:resources location="/WEB-INF/excel/" mapping="/download/excel/**" />

不贅述

2.資源攔截處理

package com.xxx.calculator.webapp.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanFactoryPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.servlet.resource.ResourceHttpRequestHandler;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLDecoder;

/**
 * 靜態資源解析
 * Created by dongchao on 2018/5/6 16:42
 */
@Controller
public class ResourceHttpRequestHandlerReplacer extends ResourceHttpRequestHandler implements BeanFactoryPostProcessor {

    private Logger logger = LoggerFactory.getLogger(this.getClass());

//    @Autowired
//    ServletContext servletContext;

    // 需求：對下載的文件名稱
    @Override
    public void handleRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        String fileName = URLDecoder.decode(request.getRequestURI(), "utf-8");
        logger.info("fileName1:{}", fileName);
        fileName = fileName.substring(fileName.lastIndexOf("/") + 1, fileName.length());
        logger.info("fileName2:{}", fileName);
        request.setAttribute("org.springframework.web.servlet.HandlerMapping.pathWithinHandlerMapping", fileName);
        super.handleRequest(request, response);
    }

    @Override
    public void postProcessBeanFactory(ConfigurableListableBeanFactory factory)
            throws BeansException {
        String[] names = factory.getBeanNamesForType(ResourceHttpRequestHandler.class);

        for (String name : names) {
            BeanDefinition bd = factory.getBeanDefinition(name);
            bd.setBeanClassName("com.xxx.calculator.webapp.controller.ResourceHttpRequestHandlerReplacer");
        }
    }
}