spring boot 设置跨域访问

1.CorsConfig.java

package com.example.demo.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

@Configuration
public class CorsConfig {

    //当前跨越请求最大有效时长，这里默认1天
    private static final long MAX_AGE= 24*60*60;

    /**
     * <p>Description：跨域过滤器</p>
     * @return：CorsFilter
     */
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.addAllowedOrigin("*");  //1.设置访问源地址，*表示所有IP
        corsConfiguration.addAllowedHeader("*");  //2.设置访问源请求头，*表示所有IP
        corsConfiguration.addAllowedMethod("*");  //3.设置访问源请求方法，*表示所有IP
        corsConfiguration.setMaxAge(MAX_AGE);   // 设置跨域时长
        source.registerCorsConfiguration("/**", corsConfiguration);   //4.对接口配置跨域设置
        return new CorsFilter(source);
    }
}

 必须是前端的访问网址才行

package com.example.demo.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

@Configuration
public class CorsConfig {

    //当前跨越请求最大有效时长，这里默认1天
    private static final long MAX_AGE= 24*60*60;

    /**
     * <p>Description：跨域过滤器</p>
     * @return：CorsFilter
     */
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowCredentials(true);
        corsConfiguration.addAllowedOrigin("http://192.168.0.102:8080");  //1.设置访问源地址，*表示所有IP
        corsConfiguration.addAllowedHeader("*");  //2.设置访问源请求头，*表示所有IP
        corsConfiguration.addAllowedMethod("*");  //3.设置访问源请求方法，*表示所有IP
        corsConfiguration.setMaxAge(MAX_AGE);   // 设置跨域时长
        source.registerCorsConfiguration("/**", corsConfiguration);   //4.对接口配置跨域设置
        return new CorsFilter(source);
    }
}

报*换为

http://192.168.0.102:8080