验证本地是否有数据库存在

/**
 * 本地数据库
*/
function copyFile() {
  const targetPath = path.join(app.getPath("userData"), "db", "zjyf.db");
  const dbFilePath = path.join(app.getAppPath(), "public", "db", "zjyf.db");
  const dbFolderPath = path.join(app.getPath("userData"), "db");

  if (!fs.existsSync(dbFolderPath)) {
    fs.mkdirSync(dbFolderPath, { recursive: true });
  }
  fs.access(targetPath, fs.constants.F_OK, (err) => {
    if (err) {
      // 创建读写流
      const readStream = fs.createReadStream(dbFilePath);
      const writeStream = fs.createWriteStream(targetPath);
      // 管道传输数据
      readStream.pipe(writeStream);
      writeStream.on("finish", () => {
        initJdk();
      });
    } else {
      initJdk();
    }
  });
}

本地数据库存在用户目录下

开启子服务，启动java服务

async function initJdk() {
  try {
    const data = await axios.get(
      "http://localhost:49080/admin-api/single/fin/service-matters/page"
    );
  } catch (error) {
    if (process.platform === "win32") {
      const publicPath = path.join(app.getAppPath(), "public");
      const batFilePath = path.join(publicPath, "start.bat");
      cmdProcess = spawn("cmd.exe", ["/c", batFilePath], {
        cwd: publicPath,
      });
    }
  }
}

监听服务是否跑通

function watchServerStart() {
  async function pollServer() {
    try {
      const data = await axios.get(
        "http://localhost:49080/admin-api/fin/getTime"
      );
      createWindow();
      console.log("-----------------success---------------");
    } catch (error) {
      console.log("-error-");
      setTimeout(() => {
        pollServer();
      }, 2000);
    }
  }
  pollServer();
}