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volatile关键字有什么用？

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1

校验框架

class="cursor-pointer"> 详细描述

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mybatis运行成功，但出现如下错误

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1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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项目上传服务器可以正常运行，但是出现了一个很奇怪的bug

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1

会话管理

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

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"'
  '$connection $upstream_addr'
  ' $upstream_response_time $request_time "$request_time" ';
   access_log  logs/access.log  main;
   sendfile        on;
   #tcp_nopush     on;
   #keepalive_timeout  0;
   keepalive_timeout  65;
   # http_proxy
   proxy_buffer_size 128k;
   proxy_buffers 32 128k;
   proxy_busy_buffers_size 128k;
   gzip  on;
   upstream web{
       server 139.199.13.81:8081;
       server 139.199.13.81:8091;
       hash $request_uri;
   }
   server {
       listen      80;
       server_name  139.199.13.81;
       #charset koi8-r;
       location /static/ {
           root  /usr/local/nginx/Tiles;
       }
       access_log  logs/access.log  main;
       location / {
           root   html;
           index  index.html index.htm;
           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;
           proxy_pass http://tomcats;
       }
   }
       #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;
        }

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mybtis向数据库插入信息时,不能插入中文

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1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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linux下mysql启动错误，mysqld服务无法启动

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1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

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登录注册，点击首页跳转，却无法转到需要页面

1

interceptor

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图

class="cursor-pointer"> 源码

<!--配置拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <!-- 拦截器拦截的URL格式 -->
            <mvc:mapping path="/u/**" />
            <mvc:exclude-mapping path="*.html" />
            <mvc:exclude-mapping path="*.jsp" />
            <!--处理拦截的具体实现类 -->
            <bean class="com.alibaba.TestInterceptors.TestInterceptor" />
        </mvc:interceptor>
    </mvc:interceptors>

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Initialization of bean failed; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.web.servlet.handler.MappedInterceptor#1': Unsatisfied dependency expressed through constructor parameter 2: Could not convert argument value of type [com.alibaba.TestInterceptors.TestInterceptor] to required type [org.springframework.web.servlet.HandlerInterceptor]: Failed to convert value of type 'com.alibaba.TestInterceptors.TestInterceptor' to required type 'org.springframework.web.servlet.HandlerInterceptor'; nested exception is java.lang.IllegalStateException: Cannot convert value of type 'com.alibaba.TestInterceptors.TestInterceptor' to required type 'org.springframework.web.servlet.HandlerInterceptor': no matching editors or conversion strategy found

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junit单元测试的写法

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1

mybatis

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 错误截图