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; 
 
@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; 
  } 
   
  @Bean 
  public CorsFilter corsFilter() { 
    UrlbasedCorsConfigurationSource source = new UrlbasedCorsConfigurationSource(); 
    source.registerCorsConfiguration("/**", buildConfig()); // 4 
    return new CorsFilter(source); 
  } 

总结

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