NodejsHow to set up to allow cross-domain? The following article will introduce you to the setting method. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.
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Settings allow all domain names to cross domains:
app.all("*",function(req,res,next){ //设置允许跨域的域名,*代表允许任意域名跨域 res.header("Access-Control-Allow-Origin","*"); //允许的header类型 res.header("Access-Control-Allow-Headers","content-type"); //跨域允许的请求方式 res.header("Access-Control-Allow-Methods","DELETE,PUT,POST,GET,OPTIONS"); if (req.method.toLowerCase() == 'options') res.send(200); //让options尝试请求快速结束 else next(); }
Set to allow the specified domain name "http://www.zhangpeiyue.com" to cross domain:
app.all("*",function(req,res,next){ //设置允许跨域的域名,*代表允许任意域名跨域 res.header("Access-Control-Allow-Origin","http://www.zhangpeiyue.com"); //允许的header类型 res.header("Access-Control-Allow-Headers","content-type"); //跨域允许的请求方式 res.header("Access-Control-Allow-Methods","DELETE,PUT,POST,GET,OPTIONS"); if (req.method.toLowerCase() == 'options') res.send(200); //让options尝试请求快速结束 else next(); }
Set to allow multiple domain names to cross domain:
app.all("*",function(req,res,next){ if( req.headers.origin.toLowerCase() == "http://www.zhangpeiyue.com" || req.headers.origin.toLowerCase() =="http://127.0.0.1" ) { //设置允许跨域的域名,*代表允许任意域名跨域 res.header("Access-Control-Allow-Origin", req.headers.origin); } //允许的header类型 res.header("Access-Control-Allow-Headers", "content-type"); //跨域允许的请求方式 res.header("Access-Control-Allow-Methods", "DELETE,PUT,POST,GET,OPTIONS"); if (req.method.toLowerCase() == 'options') res.send(200); //让options尝试请求快速结束 else next(); }
If there are many allowed domain names, you can put the allowed cross-domain domain names into the array:
app.all("*",function(req,res,next){ var orginList=[ "http://www.zhangpeiyue.com", "http://www.alibaba.com", "http://www.qq.com", "http://www.baidu.com" ] if(orginList.includes(req.headers.origin.toLowerCase())){ //设置允许跨域的域名,*代表允许任意域名跨域 res.header("Access-Control-Allow-Origin",req.headers.origin); } //允许的header类型 res.header("Access-Control-Allow-Headers", "content-type"); //跨域允许的请求方式 res.header("Access-Control-Allow-Methods", "DELETE,PUT,POST,GET,OPTIONS"); if (req.method.toLowerCase() == 'options') res.send(200); //让options尝试请求快速结束 else next(); }
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