vue前后端端口不一致的问题解决

const path = require('path')
const devEnv = require('./dev.env')
module.exports = {
    dev: {

        // Paths
        assetsSubDirectory: 'static',
        assetsPublicPath: '/',
        proxyTable: devEnv.OPEN_PROXY === false ? {} : {
            '/api': {
                target: 'http://localhost:8083',
                changeOrigin: true,
                pathRewrite: {
                    '^/api': '/'
                }
            }
        },

// Paths
        assetsSubDirectory: 'static',
        assetsPublicPath: '/',
        proxyTable: devEnv.OPEN_PROXY === false ? {} : {
            '/api': {
                target: 'http://localhost:8083', //需要更改的后端的端口号
                changeOrigin: true,
                pathRewrite: {
                    '^/api': '/'
                }
            }
        },
        这里的配置是正则表达式，以/api开头的将会被用用‘/api'替换掉，假如后台文档的接口是 /api/list/xxx
//前端api接口写：axios.get('/api/list/xxx') ， 被处理之后实际访问的是：http://news.baidu.com/api/list/xxx
}
}},

NODE_ENV=development
//设置VUE_APP_PREVIEW=false ，
VUE_APP_PREVIEW=false 
//URL后接后端tomcat服务地址http://localhost:8070/
VUE_APP_API_BASE_URL=http://localhost:8070/

package com.mashibing.config;
//当通过文件配置跨域请求时，则配置的是全局
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 {
    private CorsConfiguration buildConfig() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        // 设置属性
        // 允许跨域请求的地址，*表示所有
        corsConfiguration.addAllowedOrigin("*");
        //  跨域的请求头
        corsConfiguration.addAllowedHeader("*");
        //  跨域的请求方法
        corsConfiguration.addAllowedMethod("*");
        // 在跨域请求的时候使用同一个 Session
        corsConfiguration.setAllowCredentials(true);
        return corsConfiguration;
    }
    @Bean
    public CorsFilter corsFilter() {
        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        //配置 可以访问的地址
        source.registerCorsConfiguration("/**", buildConfig());
        return new CorsFilter(source);
    }
}

package com.mashibing.controller;
 
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
 
@RestController
@CrossOrigin(origins = "*",methods = {},allowedHeaders = "*",allowCredentials = "true")
public class test {
    @RequestMapping("/auth/login")
    public String test1(){
        System.out.println("Success");
        return "";
    }
}