Nodejs解决跨域请求
app.use(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");
//接收ajax请求手动提交的cookie信息
res.header("Access-Control-Allow-Credentials", true);
res.header("X-Powered-By", ' 3.2.1');
if(req.method=="OPTIONS") res send(200);//让options请求快速返回
else next()
});
例
http.createServer((req, res) => {
//设置允许跨域的域名，*代表允许任意域名跨域
res.setHeader("Access-Control-Allow-Origin", "*");
//允许的header类型
res.setHeader("Access-Control-Allow-Headers", "content-type");
//接收ajax请求手动提交的cookie信息
res.setHeader("Access-Control-Allow-Credentials", true);
//跨域允许的请求方式
res.setHeader("Access-Control-Allow-Methods", "DELETE,PUT,POST,GET,OPTIONS");
res.setHeader("Content-Type", "application/json;charset=utf-8");
if (req.method == 'OPTIONS') return res.end();
...
...
})
