原帖地址:http://pingguohe.net/2016/03/21/ajax-solution-spring.html
又学到了一招小技巧:关于解决跨域问题的后台解决方式,记录一下
原贴的后续讲述没有仔细研究,只是看了帖子后初步的自己定义了一个拦截器,并配置好xml的配置,很简单的操作就实现了功能。
import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletResponse; public class CORSFilter implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { // TODO Auto-generated method stub } @Override public void doFilter(ServletRequest request, ServletResponse response,FilterChain chain) throws IOException, ServletException { HttpServletResponse httpResponse = (HttpServletResponse) response; httpResponse.setHeader("Access-Control-Allow-Origin","*"); httpResponse.setHeader("Access-Control-Allow-Methods","POST,GET,OPTIONS,DELETE"); httpResponse.setHeader("Access-Control-Max-Age","3600"); httpResponse.setHeader("Access-Control-Allow-Headers","Origin, X-Requested-With, Content-Type, Accept"); httpResponse.setHeader("",""); httpResponse.setHeader("",""); chain.doFilter(request, httpResponse); } @Override public void destroy() { // TODO Auto-generated method stub } }
然后参数的引用,原来是通过jsonp实现跨域的,只支持get方法,所以参数只能从request对象中获取,改为cors跨域后,支持post方法,原来的传参就接收不到参数了,修改成通过注解@RequestBody就可以正常获取。