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
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
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