service.interceptors.request.use(
    config => {
        config.data = JSON.stringify(config.data)
        config.headers = {
        //添加token，unit，busType，processId
            'Content-Type': 'application/json', //配置请求头
            token: 1,
            unit: 1,
            busType: 1,
            processId: 1,
        }
        let token = process.env.VUE_APP_TESTTOKEN
        console.log('token', token)
        if (token) {
            config.headers['Access-Token'] = token
            config.headers.token = token //如果要求携带在请求头中
        }

        return config
    },
    error => {
        return Promise.reject(error)
    }
)