首先ajax跨域请求携带cookies
一、需要设置前端withCredentials: true
$.ajax({
type:'post',
url: 'xxxxxxx',
dataType: 'json',
xhrFields: {
withCredentials: true //解决跨服务传递时不传递cookie的问题,允许携带证书
},
crossDomain: true, //允许跨域
success: function (data) {
console.info(data)
if (data.status == 200){
alert(data.data)
$("#shopping-num").html = data.data
}
}
})
二、需要设置服务器或者访问的文件Access-Control-Allow-Credentials true 还需要设置 Access-Control-Allow-Origin 的域名(重点)
如果是 Access-Control-Allow-Origin * 也会发生CORS错误
比如 php
<?php
header('Access-Control-Allow-Origin:http://a.cn');
header('Access-Control-Allow-Credentials:true');
header('Access-Control-Allow-Methods:POST');
var_dump($_POST);
var_dump($_GET);
var_dump(file_get_contents("php://input"));
var_dump($_COOKIE);
java
//解决ajax携带cookie的跨域问题,使用@CrossOrigin注解冲突
public class CorsFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
HttpServletResponse response = (HttpServletResponse) res;
HttpServletRequest reqs = (HttpServletRequest) req;
// response.setHeader("Access-Control-Allow-Origin",reqs.getHeader("Origin"));
//注意重点:下面的第二个参数不可以写*通配,需要明确写出请求方的IP地址及端口
response.setHeader("Access-Control-Allow-Origin","http://localhost:8081");
response.setHeader("Access-Control-Allow-Credentials", "true");
response.setHeader("Access-Control-Allow-Methods", "POST, GET, PATCH, DELETE, PUT");
response.setHeader("Access-Control-Max-Age", "3600");
response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
chain.doFilter(req, res);
}
@Override
public void destroy() {
}
}
或者在服务器的config设置 apache
Header set Access-Control-Allow-Credentials true
ps:遇到的问题 当使用ajax 访问 localhost 时候不会携带cookies 比如 解决方案
一、使用服务器的代理功能
server {
listen 80;
server_name www.test-crowdfunding.com;
location / {
root E:\fontweb;
index index.html index.htm;
}
error_page 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
location /api/ {
proxy_pass http://localhost:9090/;
}
}
二、也可以把 localhost 更换127.0.0.1 localhost
127.0.0.1 猜想当在同一域名下,有两个服务器,localhost找不到是哪个服务器
比如 在同一台机器上有nginx(80端口),apache(8080端口) 当访问 localhost 时候找不到是 nginx 还是 apache
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