Spring Boot跨域

 

addInterceptors拦截器和addCorsMappings跨域有冲突，不能写在一起，不然会有跨域问题。看以下代码：

 

@Configuration
public class MvcConfig extends WebMvcConfigurerAdapter {
	
//	/**
//     * 跨域-有冲突
//     * @param registry
//     */  
//	@Override
//    public void addCorsMappings(CorsRegistry registry) {
//        registry.addMapping("/**")
//        			.allowedOrigins("*")
//                .allowCredentials(true)
//                .allowedHeaders("*") 
//                .allowedMethods("GET", "POST", "DELETE", "PUT")
//                .maxAge(3600);
//        super.addCorsMappings(registry);
//    }

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		//注册自定义拦截器 {addPathPatterns-配置拦截的路径}、{excludePathPatterns-配置不拦截的路径}
		registry.addInterceptor(new InterceptorConfig())
		.addPathPatterns("/api/user/**")
		.excludePathPatterns("/api/tourist/**");  
        super.addInterceptors(registry);
	}
	
	
	
	@Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
		//Swagger安全性
        registry.addResourceHandler("swagger-ui.html")
                .addResourceLocations("classpath:/META-INF/resources/");

        registry.addResourceHandler("/webjars/**")
                .addResourceLocations("classpath:/META-INF/resources/webjars/");
    }
	
	/**
	 * jwt过滤器
	 * @return
	 */
	@Bean
	public FilterRegistrationBean jwtFilter() {
		final FilterRegistrationBean registrationBean = new FilterRegistrationBean();
        JwtFilter filter = new JwtFilter(adminsService());
        registrationBean.setFilter(filter);
        return registrationBean;
	}

	@Bean
	public IAdminsService adminsService() {
		return new AdminsServiceImpl();
	}
	
	
	
}

 

 

/**
 * 拦截器
 * @author dwen
 * 2018年5月18日下午8:54:09
 */
public class InterceptorConfig implements HandlerInterceptor {
	
	private static final Logger Logger = LoggerFactory.getLogger(InterceptorConfig.class);

	@Override
	public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3)
			throws Exception {
//		Logger.info("===============afterCompletion==============");
	}

	@Override
	public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3)
			throws Exception {
//		Logger.info("===============postHandle==============");
	}

	@Override
	public boolean preHandle(HttpServletRequest req, HttpServletResponse res, Object arg2) throws Exception {
		Logger.info("===============preHandle==============");
		 res.setHeader("Content-type", "text/html;charset=UTF-8");
	     res.setCharacterEncoding("UTF-8");
	     res.setHeader("Access-Control-Allow-Methods", "POST, GET, DELETE, PUT");
	     res.setHeader("Access-Control-Max-Age", "3600"); 
	     res.setHeader("Access-Control-Allow-Credentials", "true");
	     res.setHeader("Access-Control-Allow-Headers", "*");
	     res.setHeader("Access-Control-Allow-Origin", "*"); 
	     res.setHeader("Content-Type", "application/json");

	     
	 	String url = req.getRequestURI();
		String[] paths = url.split("/");//Get path userId
		ArrayList<String> pathList = new ArrayList<String>(Arrays.asList(paths));
		String userIdStr = pathList.get(pathList.indexOf("user") + 1);
		int adminId = Integer.parseInt(userIdStr);//用户id
    		String token = req.getHeader("x-access-token");
    		
    		//【文件上传|导excel】不检查jwt
    		if (url.contains("common/upload")
					|| url.contains("importAutoSubjectExcel")
					|| url.contains("importExaminationPlanExcel")
					|| url.contains("importExaminationScoreExcel")
					|| url.contains("importStudentInfoExcel")
					|| url.contains("importStudyPlanExcel")) {
				return true;
			}else{
				if (adminId > 0) {
	                //TODO 检查jwt令牌, 如果令牌不合法或者过期
	    			 boolean result = JwtUtil.validateToken(token, userIdStr);
	              if (!result) {
	                   res.getWriter().print(JSONUtils.returnJSON(null, Result.TOKEN_ERROR.key, Result.TOKEN_ERROR.value));
	                   return false;
	                }
	             }
			}
    		 
		return true;//返回true继续向下执行，返回false取消当前请求
	}

}