经过我在网上搜索,找到方法
设置express允许本地跨域访问
//设置允许跨域访问该服务. app.all('*', function (req, res, next) { res.header('Access-Control-Allow-Origin', '*'); //Access-Control-Allow-Headers ,可根据浏览器的F12查看,把对应的粘贴在这里就行 res.header('Access-Control-Allow-Headers', 'Content-Type'); res.header('Access-Control-Allow-Methods', '*'); res.header('Content-Type', 'application/json;charset=utf-8'); next(); }); ———————————————— 版权声明:本文为CSDN博主「ffiing」的原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接及本声明。 原文链接:https://blog.csdn.net/qq_34545192/article/details/80177362
把app修改为router,就可以允许跨域了
router.all('*', function (req, res, next) {
res.header('Access-Control-Allow-Origin', '*');
//Access-Control-Allow-Headers ,
res.header('Access-Control-Allow-Headers', 'Content-Type');
res.header('Access-Control-Allow-Methods', '*');
res.header('Content-Type', 'application/json;charset=utf-8'); next(); });