java解决请求跨域的两种方法

import javax.servlet.Filter;import javax.servlet.FilterChain;import javax.servlet.FilterConfig;import javax.servlet.ServletException;import javax.servlet.ServletRequest;import javax.servlet.ServletResponse;import javax.servlet.annotation.WebFilter;import javax.servlet.http.HttpServletResponse;@WebFilter(filterName="CorsFilter" , urlPatterns="*.do")public class CorsFilter implements Filter{ @Override public void destroy() { } @Override public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException { HttpServletResponse response = (HttpServletResponse) resp;  response.setHeader("Access-Control-Allow-Origin", "*"); //解决跨域访问报错   response.setHeader("Access-Control-Allow-Methods", "POST, PUT, GET, OPTIONS, DELETE");   response.setHeader("Access-Control-Max-Age", "3600"); //设置过期时间   response.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, client_id, uuid, Authorization");   response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // 支持HTTP 1.1.   response.setHeader("Pragma", "no-cache"); // 支持HTTP 1.0. response.setHeader("Expires", "0");   chain.doFilter(req, resp);   } @Override public void init(FilterConfig arg0) throws ServletException { }}

<filter> <filter-name>CorsFilter</filter-name> <filter-class>com.huaming.filter.CorsFilter</filter-class></filter><filter-mapping> <filter-name>CorsFilter</filter-name> <url-pattern>*.do</url-pattern></filter-mapping>

import org.springframework.web.filter.CorsFilter;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.web.cors.CorsConfiguration;import org.springframework.web.cors.UrlBasedCorsConfigurationSource;/** * 解决跨域问题springboot所需配置 */@Configurationpublic class CORSConfiguration {  @Bean public CorsFilter corsFilter() { //1.添加CORS配置信息 CorsConfiguration config = new CorsConfiguration(); //1) 允许的域,不要写*，否则cookie就无法使用了 config.addAllowedOrigin("*"); config.addAllowedHeader("*"); // 允许任何头 config.addAllowedMethod("*"); // 允许任何方法（post、get等） //2) 是否发送Cookie信息 config.setAllowCredentials(true); //3) 允许的请求方式 config.addAllowedMethod("OPTIONS"); config.addAllowedMethod("HEAD"); config.addAllowedMethod("GET"); config.addAllowedMethod("PUT"); config.addAllowedMethod("POST"); config.addAllowedMethod("DELETE"); config.addAllowedMethod("PATCH"); // 4）允许的头信息 config.addAllowedHeader("*"); // 5)配置有效时长 config.setMaxAge(3600*24L); //2.添加映射路径，我们拦截一切请求 UrlBasedCorsConfigurationSource configSource = new UrlBasedCorsConfigurationSource(); configSource.registerCorsConfiguration("/**", config); //3.返回新的CorsFilter. return new CorsFilter(configSource);  }}