angular如何获取别的网站的数据?

var durl = "http://www.baidu.com";
    $http({
        method: 'GET',
        url: durl,
        header:{'Access-Control-Allow-Origin':'*'}
    }).then(function successCallback(response) {
            console.log(response);
        }, function errorCallback(response) {
            console.log(response);
    });
    
chrome报错:
XMLHttpRequest cannot load 
https://www.baidu.com/. No 'Access-Control-Allow-Origin' header is present 
on the requested resource. Origin 'null' is therefore not allowed access.
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