Question

我一直在尝试按照youtube教程在命令提示符下从服务器打开网页。但是我在尝试打开下面附带的网页时收到以下错误页面。请帮助我解决这个问题。你能帮助我解决问题的来临吗？ youtube链接：https://www.youtube.com/watchv=hE5zeEiVqpw&list=PL55RiY5tL51oGJorjEgl6NVeDbx_fO5jR&index=13

错误：无法在视图目录

中查找视图“错误”

    at next (C:\Users\web\first-1\node_modules\express\lib\router\index.js:275:10)
    at Layer.handle_error (C:\Users\web\first-1\node_modules\express\lib\router\layer.js:67:12)
    at trim_prefix (C:\Users\web\first-1\node_modules\express\lib\router\index.js:315:13)
    at C:\Users\web\first-1\node_modules\express\lib\router\index.js:284:7
    at Function.process_params (C:\Users\web\first-1\node_modules\express\lib\router\index.js:335:12)
    at next (C:\Users\web\first-1\node_modules\express\lib\router\index.js:275:10)
    at Layer.handle_error (C:\Users\web\first-1\node_modules\express\lib\router\layer.js:67:12)
    at trim_prefix (C:\Users\web\first-1\node_modules\express\lib\router\index.js:315:13)
    at C:\Users\web\first-1\node_modules\express\lib\router\index.js:284:7

我附上以下错误代码：在EventEmitter.render（C：\ Users \ web \ first-1 \ node_modules \ express \ lib \ application.js：580：17）

if (!view.path) {
      var dirs = Array.isArray(view.root) && view.root.length > 1
        ? 'directories "' + view.root.slice(0, -1).join('", "') + '" or "' + view.root[view.root.length - 1] + '"'
        : 'directory "' + view.root + '"'
      var err = new Error('Failed to lookup view "' + name + '" in views ' + dirs);

在C：\ Users \ web \ first-1 \ app.js：49：7

app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

Answer 1

我很新，但我认为你明白你没有任何工作到那个路径node_modules

对于节点js，服务器可以像这样实现

app.js

$ cat t4.cpp
#include <CL/opencl.h>
#include <stdint.h>
#include <stdio.h>
#include <inttypes.h>
#include <stdlib.h>

const char source[] =
"__kernel void test_rotate(__global ulong *d_count, ulong loops, ulong patt)"
"{"
"  ulong n = patt;"
"  for (ulong i = 0; i<loops; i++)"
"    n &= (107 << (patt+(i%7)));"
"  d_count[0] = n + loops;"
"}"
;

int main(int argc, char *argv[])
{
  cl_platform_id platform;
  cl_device_id device;
  cl_context context;
  cl_command_queue queue1, queue2;
  cl_program program;
  cl_mem mem1, mem2;
  cl_kernel kernel;

  bool two_kernels = false;
  unsigned long long loops = 1000;
  if (argc > 1) loops *= atoi(argv[1]);
  if (argc > 2) two_kernels = true;
  if (two_kernels) printf("running two kernels\n");
  else printf("running one kernel\n");
  printf("running  %lu loops\n", loops);
  unsigned long long pattern = 1;
  clGetPlatformIDs(1, &platform, NULL);
  clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, 1, &device, NULL);
  context = clCreateContext(NULL, 1, &device, NULL, NULL, NULL);
  queue1 = clCreateCommandQueue(context, device, CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, NULL);
  queue2 = clCreateCommandQueue(context, device, CL_QUEUE_OUT_OF_ORDER_EXEC_MODE_ENABLE, NULL);

  const char *sources[1] = {source};
  program = clCreateProgramWithSource(context, 1, sources, NULL, NULL);
  clBuildProgram(program, 1, &device, NULL, NULL, NULL);
  mem1 = clCreateBuffer(context, CL_MEM_READ_WRITE, 1*sizeof(cl_ulong), NULL, NULL);
  mem2 = clCreateBuffer(context, CL_MEM_READ_WRITE, 1*sizeof(cl_ulong), NULL, NULL);
  kernel = clCreateKernel(program, "test_rotate", NULL);
  const size_t work_size[1] = {1};
  clSetKernelArg(kernel, 0, sizeof(mem1), &mem1);
  clSetKernelArg(kernel, 1, sizeof(loops), &loops);
  clSetKernelArg(kernel, 2, sizeof(pattern), &pattern);

  clEnqueueNDRangeKernel(queue1, kernel, 1, NULL, work_size, work_size, 0, NULL, NULL);
  if (two_kernels){
    clSetKernelArg(kernel, 0, sizeof(mem2), &mem2);
    clSetKernelArg(kernel, 1, sizeof(loops), &loops);
    clSetKernelArg(kernel, 2, sizeof(pattern), &pattern);

    clEnqueueNDRangeKernel(queue2, kernel, 1, NULL, work_size, work_size, 0, NULL, NULL);
    }
  cl_ulong *buf1 = (cl_ulong *)clEnqueueMapBuffer(queue1, mem1, true, CL_MAP_READ, 0, 1*sizeof(cl_ulong), 0, NULL, NULL, NULL);
  cl_ulong *buf2 = (cl_ulong *)clEnqueueMapBuffer(queue2, mem2, true, CL_MAP_READ, 0, 1*sizeof(cl_ulong), 0, NULL, NULL, NULL);
  printf("result1: %lu\n", buf1[0]);
  printf("result2: %lu\n", buf2[0]);
  clEnqueueUnmapMemObject(queue1, mem1, buf1, 0, NULL, NULL);
  clEnqueueUnmapMemObject(queue2, mem2, buf2, 0, NULL, NULL);
  return 0;
}
$ nvcc -arch=sm_35 -o t4 t4.cpp -lOpenCL
$ ./t4
running one kernel
running  1000 loops
result1: 1000
result2: 0
$ cp t4.cpp t4.cl
$ nvcc -arch=sm_35 -x cu -o t4 t4.cl -lOpenCL
$ ./t4
running one kernel
running  1000 loops
result1: 1000
result2: 0
$

来自terminal / cmd的

$ path / to / project node app.js

从浏览器

访问localhost：9999。享受！

打开网页时出错

1 个答案: