JS跨域访问CORS配置

两个方法

一、配置Filter，每个请求都拦截，设置Http Header

Web.xml

<filter>
    <filter-name>cros</filter-name>
    <filter-class>cn.ifengkou.test.filter.CORSFilter</filter-class>
</filter>
<filter-mapping>
    <filter-name>cros</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping>

Java

public class CORSFilter extends OncePerRequestFilter {
    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain filterChain) throws ServletException, IOException {
        response.addHeader("Access-Control-Allow-Origin", "*");
        response.addHeader("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE");
        response.addHeader("Access-Control-Allow-Headers", "Content-Type");
        response.addHeader("Access-Control-Max-Age", "1800");//30 min
        filterChain.doFilter(request, response);
    }
}

二、使用Spring4.2版本以上，使用CrossOrigin注解

@CrossOrigin(origins = "http://domain2.com", maxAge = 3600)
@RestController
@RequestMapping("/account")
public class AccountController {

    @RequestMapping("/{id}")
    public Account retrieve(@PathVariable Long id) {
        // ...
    }

    @RequestMapping(method = RequestMethod.DELETE, path = "/{id}")
    public void remove(@PathVariable Long id) {
        // ...
    }
}