解决方案很简单。
直接上代码:
web.xml中:
添加了 cors来解决跨域
(奇怪的是,credentials设置为false。反正这个是照搬的。。。)
CorsFilter org.apache.catalina.filters.CorsFilter cors.allowed.origins * cors.support.credentials false CorsFilter /*
或者在代码中设置:
response.setHeader("Access-Control-Allow-Origin", "*"); response.setHeader("Access-Control-Allow-Headers", "*"); response.setHeader("Access-Control-Allow-Methods", "GET, POST"); response.setHeader("Access-Control-Allow-Credentials", "true");
ajax:
$.ajax({ type: "post", url: "Get", crossDomain: true, //加这二行支持ajax跨域,允许跨域 xhrFields: {withCredentials: true},//加这二行支持ajax跨域,携带凭证 success: function (data) { alert(data); } });