Spring Boot 跨域

一：使用@CrossOrigin注解

    @CrossOrigin
    @RequestMapping(value = "/get")
    public HashMap<String, Object> get(@RequestParam String name) {
        HashMap<String, Object> map = new HashMap<String, Object>();
        map.put("title", "hello world");
        map.put("name", name);
        return map;
    }

二：配置跨域类

import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

import java.util.Collections;

/**
 * 跨域请求过滤器
 *
 */
@Configuration
public class OriginFilter {
    @SuppressWarnings("unchecked")
    @Bean
    public FilterRegistrationBean corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.setAllowedOrigins(Collections.singletonList(CorsConfiguration.ALL));
        corsConfiguration.setAllowedHeaders(Collections.singletonList(CorsConfiguration.ALL));
        corsConfiguration.setAllowedMethods(Collections.singletonList(CorsConfiguration.ALL));
        corsConfiguration.addExposedHeader("Authorization");
        source.registerCorsConfiguration("/**", corsConfiguration);
        FilterRegistrationBean bean = new FilterRegistrationBean(new CorsFilter(source));
        bean.setOrder(Ordered.HIGHEST_PRECEDENCE);
        return bean;
    }
}