nginx负载均衡解决图片css等静态资源无法加载问题

ngnix做负载均衡，首先修改ngnix.conf如下

upstream server_lb{
        server localhost:8080;
        server localhost:8081;
    } 

#注释原有的配置
        #location / {
        #    root   /usr/share/nginx/html;
        #    index  index.html index.htm;
        #}

添加

location / {
            proxy_pass        http://server_lb;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        }

到此，我的项目可以打开了，也显示了部分图片，但是还是有一些图片因为路径的问题不显示，各种尝试后，发现tomcat去掉项目名后运行 就可以正常显示了

具体步骤如下

打开tomcat/conf/server.xml
找到下面代码

<Host appBase="webapps" autoDeploy="true" name="localhost" unpackWARs="true">

然后在下面加一句

<Context docBase="F:\tomcat2\webapps\WebRoot" path="" reloadable="false"/>

docBase里的是你项目所在的路径

重启后，开启tomcat，开启nginx就可以实现负载均衡了

解决过程中查的一些链接 贴在这里了，本人小白 具体原理说不太清楚，大家可以进去详细看看

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Tomcat部署web项目,如何直接通过域名访问,不加项目名称：https://www.cnblogs.com/langtianya/p/5743357.html

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nginx基本配置与参数说明以及Nginx中的upstream轮询机制介绍：
http://blog.csdn.net/happydream_c/article/details/54943802

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【Nginx】实现负载均衡的几种方式：http://blog.csdn.net/qq_28602957/article/details/61615876

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附一下我的nginx.conf的代码

#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;

    upstream server_lb{
        server localhost:8080;
        server localhost:8081;
    } 

    server {
        listen       80;
        server_name  server_lb;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        #注释原有的配置
        #location / {
        #    root   /usr/share/nginx/html;
        #    index  index.html index.htm;
        #}


         location / {
            proxy_pass        http://server_lb;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header REMOTE-HOST $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

        }



        #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;
    #    }
    #}

}