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yb课堂之跨域配置 《二十三》
阅读量:448 次
发布时间:2019-03-06

本文共 2846 字,大约阅读时间需要 9 分钟。

CorsInterceptor.java

 

package net.ybclass.online_ybclass.interceptor;import org.springframework.http.HttpMethod;import org.springframework.web.servlet.HandlerInterceptor;import org.springframework.web.servlet.ModelAndView;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;public class CorsInterceptor implements HandlerInterceptor {    @Override    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {        //表示接受任意域名的请求,也可以指定域名        response.setHeader("Access-Control-Allow-Origin", request.getHeader("origin"));        //该字段可选,是个布尔值,表示是否可以携带cookie        response.setHeader("Access-Control-Allow-Credentials", "true");        response.setHeader("Access-Control-Allow-Methods", "GET, HEAD, POST, PUT, PATCH, DELETE, OPTIONS");        response.setHeader("Access-Control-Allow-Headers", "*");        //这里可以不加,但是其他语言开发的话记得处理options请求        /**         * 非简单请求是对那种对服务器有特殊要求的请求,         * 比如请求方式是PUT或者DELETE,或者Content-Type字段类型是application/json。         * 都会在正式通信之前,增加一次HTTP请求,称之为预检。浏览器会先询问服务器,当前网页所在域名是否在服务器的许可名单之中,         * 服务器允许之后,浏览器会发出正式的XMLHttpRequest请求         */        if(HttpMethod.OPTIONS.toString().equals(request.getMethod())){            return true;        }        return true;    }    @Override    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {    }    @Override    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {    }}

InterceptorConfig.java

 

package net.ybclass.online_ybclass.config;import net.ybclass.online_ybclass.interceptor.CorsInterceptor;import net.ybclass.online_ybclass.interceptor.LoginInterceptor;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.servlet.config.annotation.InterceptorRegistry;import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;/** * 拦截器配置 * 不用权限可以访问url /api/v1/pub/ * 要登陆可以访问url /api/v1/pri/ */@Configurationpublic class InterceptorConfig implements WebMvcConfigurer {    @Bean    LoginInterceptor loginInterceptor(){        return new LoginInterceptor();    }    @Bean    CorsInterceptor corsInterceptor(){return new CorsInterceptor();}    @Override    public void addInterceptors(InterceptorRegistry registry) {        //拦截全部路径,这个跨域了,需要放在最上面        registry.addInterceptor(corsInterceptor()).addPathPatterns("/**");        registry.addInterceptor(loginInterceptor())                .addPathPatterns("/api/v1/pri/*/*/**")//配置拦截的路径                .excludePathPatterns("/api/v1/pri/user/login","/api/v1/pri/user/register"); //不拦截那些路径        WebMvcConfigurer.super.addInterceptors(registry);    }}

 

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