springboot项目的resource文件下的资源文件通过浏览器下载到本地

1.springboot下的资源文件位置，如图：

2.java代码写在上图的src/main/java包下的一个controller里，具体代码如下：

package com.quanran.controller;

import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;

import java.io.InputStream;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;

import javax.annotation.Resource;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.IOUtils;
import org.springframework.core.io.ResourceLoader;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


/** 
 * Description: [外包人员信息controller]
 * Created on 2018年02月01日
 * @author  <a href="mailto: 15175223269@163.com">全冉</a>
 * @version 1.0 
 * Copyright (c) 2018年 全冉科技有限公司  
 */
@Api(value = "外包人员信息管理相关接口", description = "外包人员信息管理相关接口")
@RestController
@RequestMapping("/outsourceUser")
public class EcmOutsourceUserController {
	
	@Resource
	private ResourceLoader resourceLoader;
	
	/**
	 * <p>Discription:[下载模板功能]</p>
	 * Created on 2018年2月1日 上午11:57:59
	 * @param response response对象
	 * @param request response对象
	 * @author:[全冉]
	 */
	@ApiOperation("下载模板功能[15175223269@163.com]")
	@GetMapping("/downloadTemplate")
	public void downloadTemplate(HttpServletResponse response, HttpServletRequest request) {
		InputStream inputStream = null;
        	ServletOutputStream servletOutputStream = null;
		try {
			String filename = "外包人员信息导入模板.xlsx";
	        String path = "template/outsourceUserInfo.xlsx";
	        org.springframework.core.io.Resource resource = resourceLoader.getResource("classpath:"+path);
	        
	        response.setContentType("application/vnd.ms-excel");
	        response.addHeader("Cache-Control", "no-cache, no-store, must-revalidate");
	        response.addHeader("charset", "utf-8");
	        response.addHeader("Pragma", "no-cache");
	        String encodeName = URLEncoder.encode(filename, StandardCharsets.UTF_8.toString());
	        response.setHeader("Content-Disposition", "attachment; filename=\"" + encodeName + "\"; filename*=utf-8''" + encodeName);
	        
	        inputStream = resource.getInputStream();
	        servletOutputStream = response.getOutputStream();
	        IOUtils.copy(inputStream, servletOutputStream);
	        response.flushBuffer();
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				if (servletOutputStream != null) {
					servletOutputStream.close();
					servletOutputStream = null;
				}
				if (inputStream != null) {
					inputStream.close();
					inputStream = null;
				}
				// 召唤jvm的垃圾回收器
				System.gc();
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}
	
}