Spring Boot实现跨域访问实现代码

当前使用spring版本是4.3.9

import org.springframework.stereotype.Component;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@Component
public class CorsFilter implements Filter {
  @Override
  public void init(FilterConfig filterConfig) throws ServletException {
  }
  @Override
  public void doFilter(ServletRequest servletRequest,
             ServletResponse servletResponse,
             FilterChain filterChain) throws IOException, ServletException {
    HttpServletRequest request = (HttpServletRequest) servletRequest;
    HttpServletResponse response = (HttpServletResponse) servletResponse;
    response.setHeader("Access-Control-Allow-Origin", request.getHeader("origin"));
//    response.setHeader("Access-Control-Allow-Origin", "*");//允许跨域访问的域
    response.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");//允许使用的请求方法，以逗号隔开
    response.setHeader("Access-Control-Max-Age", "3600");// 缓存此次请求的秒数
    //允许使用的请求方法，以逗号隔开
    response.setHeader("Access-Control-Allow-Headers", "x-requested-with,Cache-Control,Pragma,Content-Type,Token");
    response.setHeader("Access-Control-Allow-Credentials","true");//是否允许请求带有验证信息
    filterChain.doFilter(servletRequest, servletResponse);
  }
  @Override
  public void destroy() {
  }
}

PS： spring boot 服务器端设置允许跨域访问

 import org.springframework.stereotype.Component;
import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
/**
 *
 * 跨域过滤器
 * @author meng
 * @version
 * @since 2016年6月19日
 */
@Component
public class CorsFilter implements Filter {
  final static org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CorsFilter.class);
  public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
    HttpServletResponse response = (HttpServletResponse) res;
    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");
    System.out.println("*********************************过滤器被使用**************************");
    chain.doFilter(req, res);
  }
  public void init(FilterConfig filterConfig) {}
  public void destroy() {}
} 

2017-04-13更新：

第二种方法，在Appplication.java添加：

private CorsConfiguration buildConfig() {
    CorsConfiguration corsConfiguration = new CorsConfiguration();
    corsConfiguration.addAllowedOrigin("*");
    corsConfiguration.addAllowedHeader("*");
    corsConfiguration.addAllowedMethod("*");
    return corsConfiguration;
  }
  /**
   * 跨域过滤器
   * @return
   */
  @Bean
  public CorsFilter corsFilter() {
    UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    source.registerCorsConfiguration("/**", buildConfig()); // 4
    return new CorsFilter(source);
  }

总结

以上所述是小编给大家介绍的Spring Boot实现跨域访问实现代码，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对我们网站的支持！