场景
网络接口返回json格式数据，可以直接在浏览器中访问。
可以在页面上右键另存为json格式文件
怎样在本地使用nginx配置，模拟get接口返回该json文件，使前端使用ajax请求数据时，可以返回该json数据，
并且浏览器还不提示跨域。
注：
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实现
1、下载nginx
nginx: download
下载对应的版本并解压，找到conf下的配置文件
2、修改配置文件
修改如下几个地方
修改默认类型为json
http {include mime.types;default_type application/json;
配置别名访问
location /json/ {default_type application/json;alias D:/jsonData/;}
这个配置的意思是先设置响应的内容格式为application/json;
这里的alias配置方式是请求替代的方式，即/json/的请求就去对应D:/jsonData/目录下去找。
配置跨域问题
add_header Access-Control-Allow-Origin *;add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';if ($request_method = 'OPTIONS') {return 204;}
3、完整示例nginx配置
#user nobody;worker_processes 1;#error_log logs/error.log;#error_log logs/error.log notice;#error_log logs/error.log info;#pid logs/nginx.pid;events {worker_connections 1024;}http {include mime.types;default_type application/json;#log_format main '$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;server {add_header Access-Control-Allow-Origin *;add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';add_header Access-Control-Allow-Headers 'DNT,X-Mx-ReqToken,Keep-Alive,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Authorization';if ($request_method = 'OPTIONS') {return 204;}listen 3000;server_name localhost;#charset koi8-r;#access_log logs/host.access.log main;location /json/ {default_type application/json;alias D:/jsonData/;}#error_page 404 /404.html;# redirect server error pages to the static page /50x.html#error_page 500 502 503 504 /50x.html;location = /50x.html {root html;}# proxy the PHP scripts to Apache listening on 127.0.0.1:80##location ~ \.php$ {# proxy_pass http://127.0.0.1;#}# 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;# }#}}
4、启动nginx，浏览器中访问
http://localhost:3000/json/migration.json
5、前端jquery发起ajax请求示例
$.ajax({url: 'http://localhost:3000/json/migration.json',type: "get",dataType: 'json',success: function (data) {}});
6、前端请求效果
