springboot读取linux服务器路径下文件

[beiken7818]

想要做excel导出，把excel文件放在某路径下读取文件然后导出文件，在本地windows环境运行可以导出，但是在Linux服务器docker部署项目，导出时会报错： 确认文件是在该目录下

2020/6/29 下午7:05:26java.io.FileNotFoundException: /root/test/template/report.xlsx (No such file or directory)
2020/6/29 下午7:05:26	at java.io.FileInputStream.open0(Native Method)
2020/6/29 下午7:05:26	at java.io.FileInputStream.open(FileInputStream.java:195)
2020/6/29 下午7:05:26	at java.io.FileInputStream.<init>(FileInputStream.java:138)
2020/6/29 下午7:05:26	at com.faujor.srm.controller.ProductInfoController.exportBaseTemplate(ProductInfoController.java:1423)
2020/6/29 下午7:05:26	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
2020/6/29 下午7:05:26	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
2020/6/29 下午7:05:26	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
2020/6/29 下午7:05:26	at java.lang.reflect.Method.invoke(Method.java:498)
2020/6/29 下午7:05:26	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
2020/6/29 下午7:05:26	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:897)
2020/6/29 下午7:05:26	at javax.servlet.http.HttpServlet.service(HttpServlet.java:634)
2020/6/29 下午7:05:26	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
2020/6/29 下午7:05:26	at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.springframework.boot.actuate.web.trace.servlet.HttpTraceFilter.doFilterInternal(HttpTraceFilter.java:90)
2020/6/29 下午7:05:26	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
2020/6/29 下午7:05:26	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
2020/6/29 下午7:05:26	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
2020/6/29 下午7:05:26	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.filterAndRecordMetrics(WebMvcMetricsFilter.java:117)
2020/6/29 下午7:05:26	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:106)
2020/6/29 下午7:05:26	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
2020/6/29 下午7:05:26	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
2020/6/29 下午7:05:26	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
2020/6/29 下午7:05:26	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
2020/6/29 下午7:05:26	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
2020/6/29 下午7:05:26	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
2020/6/29 下午7:05:26	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
2020/6/29 下午7:05:26	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
2020/6/29 下午7:05:26	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
2020/6/29 下午7:05:26	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
2020/6/29 下午7:05:26	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
2020/6/29 下午7:05:26	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
2020/6/29 下午7:05:26	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:791)
2020/6/29 下午7:05:26	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
2020/6/29 下午7:05:26	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
2020/6/29 下午7:05:26	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
2020/6/29 下午7:05:26	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
2020/6/29 下午7:05:26	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
2020/6/29 下午7:05:26	at java.lang.Thread.run(Thread.java:748)

代码如下：

    @RequestMapping("/export")
    public void export(HttpServletRequest request, HttpServletResponse response) {
        response.setContentType("text/html");
        Workbook wb;
        File file = null;
        try {
            // 模板路径
            String xlsTemplatePath = "";
            Date date = new Date();
            SimpleDateFormat sdf = new SimpleDateFormat("MMdd");
            String fileName = "";
            String time = sdf.format(date);
            xlsTemplatePath = webDownloadPath + "//report.xlsx";//webDownloadPath在yml中配置
            fileName = "导出模板_" + time;

            file = ResourceUtils.getFile(xlsTemplatePath);

            // 获取文件输入流
            InputStream inputStream = new FileInputStream(file);

            Workbook wbPartModule = null;
            if(xlsTemplatePath.endsWith(".xlsx")){
                wbPartModule = new XSSFWorkbook(inputStream);
            }else if(xlsTemplatePath.endsWith(".xls")){
                wbPartModule = new HSSFWorkbook(inputStream);
            }
            inputStream.close();
            wb = wbPartModule;

            // 设置response参数，可以打开下载页面
            response.reset();
            // xlsx 下载
            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
            // xls 下载
            response.addHeader("Content-Disposition", "attachment;filename=" + new String(fileName.getBytes("gb2312"), "ISO-8859-1") + ".xlsx");
            // 导出excel
            OutputStream out = response.getOutputStream();
            ExcelUtil.exportExcel(wb, out);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

yml配置

web:
  downLoad-path: /root/test/template

[fengjian_428]

检查一下权限 程序是否有读取root目录的权限 或者直接改成root权限运行一次看看

[CRUD的W]

docker里面只能读取docker里面的linux系统下面的路径，需要执行docker cp /root/test/template/report.xlsx 容器id://root/test/template/report.xlsx。 或者在容器启动的时候加-v参数挂载宿主机目录/root/test/template到容器的/root/test/template目录

[tianfang]

2020/6/29 下午7:05:26java.io.FileNotFoundException: /root/test/template/report.xlsx (No such file or directory) 第一行就很清楚说明原因了

[beiken7818]

多谢！问题已解决！

[beiken7818]

引用 3 楼 CRUD的W 的回复:

docker里面只能读取docker里面的linux系统下面的路径，需要执行docker cp /root/test/template/report.xlsx 容器id://root/test/template/report.xlsx。 或者在容器启动的时候加-v参数挂载宿主机目录/root/test/template到容器的/root/test/template目录

多谢！问题已解决！