springboot 读取 resource文件

文件位置信息如图；

import java.io.IOException;
import java.io.InputStream;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
 
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
import org.apache.commons.io.IOUtils;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.servlet.ModelAndView;
 
import com.gdtopway.common.utils.AjaxJson;
import com.szsj.entity.sample.SampleGrid;
import com.szsj.entity.sample.SampleInformatization;
import com.szsj.entity.sample.SampleMarkettechnilogy;
import com.szsj.entity.sample.SampleOthertechnology;
import com.szsj.entity.sample.SampleProductiontechnology;
import com.szsj.entity.sample.SampleScience;
import com.szsj.entity.sample.SampleSmallconstruction;
import com.szsj.entity.sample.SampleUtil;
import com.szsj.entity.semantic.TreeVO;
 
@RestController
@RequestMapping("/sample")
public class SampleController {
 
	@javax.annotation.Resource
	private ResourceLoader resourceLoader;
 
  /**
	 * 下载抽样模板文件
	 */
	@RequestMapping("downLoadExcel")
	public void downLoadExcel(HttpServletResponse response, HttpServletRequest request) {
		InputStream inputStream = null;
    	ServletOutputStream servletOutputStream = null;
    	try {
    		String filename = "抽样模板.xls";
	        String path = "cymb.xls";
	        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();
			}
		}
	}
 
}