node.js - Nodejs 生成标准输出作为 api 响应

Question

我正在编写一个fastify post api，它将接受请求，然后它将以请求作为参数运行一个bat文件，我想从spawn进程发送stdout作为api响应发送，一个接一个，喜欢它当您在终端中正常运行 bat 文件时，会在终端中显示。下面是我的代码。如果有人可以提供帮助，那就太棒了。

const fastify = require("fastify")({ logger: true });
const { spawn } = require("child_process");
var bat = require.resolve("./run.bat");

//declare route

fastify.post("/", async (request, reply) => {
  var { agent } = request.body;
  var { sub } = request.body;
  var { location } = request.body;
  var { times } = request.body;
  if (agent) {
    var scriptOutput = "";
    var ls = spawn(bat, [agent, sub, location, times]);
    ls.stdout.setEncoding("utf8");
    ls.stdout.on("data", function (data) {
      console.log("stdout: " + data);
      data = data.toString();
      scriptOutput += data;
    });
    ls.stderr.setEncoding("utf8");
    ls.stderr.on("data", function (data) {
      console.log("stderr: " + data);
      data = data.toString();
      scriptOutput += data;
    });
    ls.on("exit", function (code) {
      console.log("child process exited with code " + code);
      console.log("Full output of script: ", scriptOutput);
      reply.send(scriptOutput);
    });
  } else {
    reply.code();
  }
});

//run server
const start = async () => {
  try {
    await fastify.listen(3000);
  } catch (error) {
    fastify.log.error(error);
    process.exit(0);
  }
};
start();

标签： node.jsstdoutspawnfastify

Answer 1

您是否检查了 bat 文件的执行权限？尝试：

chmod +x run.bat

如果这有帮助。