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node.js express配置允許跨域

ati let pre char -h json requested all -c

app.all(*, function(req, res, next) {  
    res.header("Access-Control-Allow-Origin", "*");  
    res.header("Access-Control-Allow-Headers", "X-Requested-With");  
    res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");  
    res.header("X-Powered-By", 3.2.1)  
    res.header(
"Content-Type", "application/json;charset=utf-8"); next(); });

給每個請求添加如上請求頭即可

node.js express配置允許跨域