WebService之跨域

当使用js访问WebService时会出现跨域问题；

解决办法:

  服务端添加

 Access-Control-Allow-Origin： *;

 Access-Control-Allow-Methods：POST, GET, OPTIONS, DELETE;
 Access-Control-Max-Age：3600;
 Access-Control-Allow-Headers：x-requested-with,Authorization;
 Access-Control-Allow-Credentials：true;

新建一个拦截器：

import java.io.IOException;

import javax.servlet.*;
import javax.servlet.ServletRequest;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.*;
import javax.xml.ws.WebFault;

import org.springframework.stereotype.Component;

@Component 
public class CustomerCORSFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
            throws IOException, ServletException {
         
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String origin = (String) servletRequest.getRemoteHost() + ":" + servletRequest.getRemotePort();
        System.out.println(origin);
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setHeader("Access-Control-Allow-Headers", "x-requested-with,Authorization");
        response.setHeader("Access-Control-Allow-Credentials", "true");
        filterChain.doFilter(servletRequest, servletResponse);
    }

    @Override
    public void destroy() {
    }
}

每次请求都会在head加上即可解决跨域问题