在使用axios时，经常会遇到跨域问题。为了解决跨域问题，可以在 vue.config.js 文件中配置代理：
const { defineConfig } = require('@vue/cli-service')
module.exports = defineConfig({transpileDependencies: true,devServer: {port: 7070,proxy: {'/api': {target: 'http://localhost:8080/admin',pathRewrite: {'^/api': ''}}}}
})
axios的post请求示例：
axios.post('/api/employee/login',{username:'admin',password: '123456'}).then(res => {console.log(res.data)}).catch(error => {console.log(error.response)})
前端发送：http://localhost:7070/api/employee/login
经过代理转换为：http://localhost:8080/admin/employee/login
axios的get请求示例：
axios.get('/api/shop/status',{headers: {token: ‘xxx.yyy.zzz’}})
前端发送：http://localhost:7070/api/shop/status
经过代理转换为：http://localhost:8080/admin/shop/status
打包部署vue
npm run build
打包结束后生成dist文件夹
注意：打包时这个代理并不会跟着打包
假设我们将项目打包到的nginx地址是localhost地址，访问端口是80（80默认可省略）
那么这时候数据请求将请求的是http://localhost/api/employee/login地址，但是我们需要请求的接口是localhost:8080地址，这时候就需要用到nginx的反向代理了 。
首先进入配置文件
#user nobody;
worker_processes 1;#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;#pid logs/nginx.pid;events {worker_connections 1024;
}http {include mime.types;default_type application/octet-stream;#log_format main '$remote_addr - $remote_user [$time_local] "$request" '# '$status $body_bytes_sent "$http_referer" '# '"$http_user_agent" "$http_x_forwarded_for"';#access_log logs/access.log main;sendfile on;#tcp_nopush on;#keepalive_timeout 0;keepalive_timeout 65;#gzip on;map $http_upgrade $connection_upgrade{default upgrade;'' close;}upstream webservers{server 127.0.0.1:8080 weight=90 ;#server 127.0.0.1:8088 weight=10 ;}server {listen 80;server_name localhost;#charset koi8-r;#access_log logs/host.access.log main;location / {root html/sky;index index.html index.htm;}#error_page 404 /404.html;# redirect server error pages to the static page /50x.html#error_page 500 502 503 504 /50x.html;location = /50x.html {root html;}# 反向代理,处理管理端发送的请求location /api/ {proxy_pass http://localhost:8080/admin/;#proxy_pass http://webservers/admin/;}# 反向代理,处理用户端发送的请求location /user/ {proxy_pass http://webservers/user/;}# WebSocketlocation /ws/ {proxy_pass http://webservers/ws/;proxy_http_version 1.1;proxy_read_timeout 3600s;proxy_set_header Upgrade $http_upgrade;proxy_set_header Connection "$connection_upgrade";}# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000##location ~ \.php$ {# root html;# fastcgi_pass 127.0.0.1:9000;# fastcgi_index index.php;# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;# include fastcgi_params;#}# deny access to .htaccess files, if Apache's document root# concurs with nginx's one##location ~ /\.ht {# deny all;#}}# another virtual host using mix of IP-, name-, and port-based configuration##server {# listen 8000;# listen somename:8080;# server_name somename alias another.alias;# location / {# root html;# index index.html index.htm;# }#}# HTTPS server##server {# listen 443 ssl;# server_name localhost;# ssl_certificate cert.pem;# ssl_certificate_key cert.key;# ssl_session_cache shared:SSL:1m;# ssl_session_timeout 5m;# ssl_ciphers HIGH:!aNULL:!MD5;# ssl_prefer_server_ciphers on;# location / {# root html;# index index.html index.htm;# }#}}
配置好了代理之后就可以重启服务器了
nginx将http://localhost/api/employee/login 转为http://localhost:8080/admin/employee/login
