跨域

最新推荐文章于 2024-07-06 09:00:00 发布

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最新推荐文章于 2024-07-06 09:00:00 发布

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本文介绍了三种不同的跨域问题解决方法：使用Spring Boot配置跨域、在Tomcat中通过Web.xml及自定义过滤器实现跨域、以及在IIS服务器中设置跨域响应头。

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参考：https://www.cnblogs.com/jonath/p/5995118.html

  spring boot 解决跨域问题： 

 
 package  
 cn.itcast.start 
 ; 

 
 import  
 org.springframework.boot.SpringApplication 
 ; 

 
 import  
 org.springframework.boot.autoconfigure.SpringBootApplication 
 ; 

 
 import  
 org.springframework.cache.annotation.EnableCaching 
 ; 

 
 import  
 org.springframework.context.annotation.Bean 
 ; 

 
 import  
 org.springframework.web.cors.CorsConfiguration 
 ; 

 
 import  
 org.springframework.web.cors.UrlBasedCorsConfigurationSource 
 ; 

 
 import  
 org.springframework.web.filter.CorsFilter 
 ; 

 
 @SpringBootApplication 

 
 public class  
 MySpringBootApplication { 

 
   
 public static void  
 main 
 (String[] args) {  

 
   
 //入口运行类 

 
   
 SpringApplication. 
 run 
 (MySpringBootApplication. 
 class,  
 args) 
 ; 

}

 
   
 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) 
 ; 

}

}

  tomcat解决跨域问题： 

 
 1.在web.xml文件中加入以下内容: 

 
 < 
 filter 
 > 
   
 < 
 filter-name 
 > 
 CorsFilter 
 </ 
 filter-name 
 > 
   
 < 
 filter-class 
 > 
 cn.iqoo.api.filter.CorsFilter 
 </ 
 filter-class 
 > 
  
 </ 
 filter 
 > 
  
 < 
 filter-mapping 
 > 
   
 < 
 filter-name 
 > 
 CorsFilter 
 </ 
 filter-name 
 > 
   
 < 
 url-pattern 
 > 
 /* 
 </ 
 url-pattern 
 > 
  
 </ 
 filter-mapping 
 > 

2.

 
 package 
   
 cn.iqoo.api.filter;

 
 import 
   
 javax.servlet.*;

 
 import 
   
 javax.servlet.http.HttpServletResponse;

 
 import 
   
 java.io.IOException;

/**

 
   
 * TODO: 

*

 
   
 * @author: jonath 

 
   
 * @date: 17-3-2 

*/

 
 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 {

 
          
 HttpServletResponse httpResponse = (HttpServletResponse) servletResponse; 

 
          
 httpResponse.addHeader( 
 "Access-Control-Allow-Origin" 
 ,  
 "*" 
 ); 

 
          
 httpResponse.setHeader( 
 "Access-Control-Allow-Headers" 
 ,  
 "Origin, X-Requested-With, Content-Type, Accept" 
 ); 

 
          
 httpResponse.setHeader( 
 "Access-Control-Allow-Methods" 
 ,  
 "GET, PUT, DELETE, POST" 
 ); 

 
          
 filterChain.doFilter(servletRequest, servletResponse); 

}

 
      
 @Override 

 
 public 
   
 void 
   
 destroy() {

}

}

  iis中跨域问题： 

 
 参考：  
 https://www.cnblogs.com/babietongtianta/p/6488985.html 

 
 在IIS上选择HTTP响应标头，选择添加自定义响应标头，通常我们会添加三个HTTP响应标头： 

名称	值
Access-Control-Allow-Headers	content-type
Access-Control-Allow-Methods	GET,POST,PUT,DELETE,OPTIONS
Access-Control-Allow-Origin	*

 
 其中 

 
 Access-Control-Allow-Headers表示请求消息头； 

 
 Access-Control-Allow-Methods表示请求方法； 

 
 Access-Control-Allow-Origin表示请求来源，“*”表示不限定； 