web server and tomcat

Server Category: 
    hardware servers and software server 
web server: 
    provide resources for others to access the 
web: 
    web pages mean resources. 
Web resource classification: 
    dynamic web resources: the content is likely to change the 
    static web resources: the content is static (. almost invisible) 
web development techniques: 
    dynamic web development technologies: servlet jsp php .net 
    static web development technologies: html css .... 
What javaweb 
    pages written by java language called javaweb

web communication mechanism: 
    based on a request-response mechanism 
    once again in response to the request, responsive to the request prior

Common web server: 
    server name Manufacturer Features 
    weblogic oracle support javaee large fee for all standardized server 
    server webspere IBM large-scale support of all charges javaee specifications 
    tomcat free support small and medium servlet and jsp specifications apache server organization

tomcat: 

Frequently Asked Questions (configuration):
         1 . Start time flashed correctly configured: JAVA_HOME
         2 . port conflict 
            modify the port number of tomcat. 
                Open tomcat / conf / server.xml 
                probably have about 70 lines of code as follows:
                      <Connector = port "8080" = Protocol "the HTTP / 1.1" 
                           connectionTimeout = "20000" 
                           the redirectPort = "8443" /> 
                modify the value of the latter can be a port NOTE: 1024 left by the port number of systems 
                port 80 is left http protocol used. we can use this port number
         3 . issues that may arise (configuration CATALINA_HOME environment variables) 
            deleted

tomcat目录结构:(了解)
    bin:存放的可执行程序
    conf:配置文件
    lib:存放的是tomcat和项目运行时需要的jar包
    logs:日志 注意:catalina
    temp:临时文件
    ★★webapps:存放项目的目录
    ★work:存放jsp文件在运行时产生的java和class文件

web项目的目录结构:★★★
        myweb(项目名称)   web2.5版本标准的目录结构
            |
            |---- html css js image等目录或者文件
            |
            |---- WEB-INF(特点:通过浏览器直接访问不到 目录)
            |         |
              |         |--- lib(项目的第三方jar包)
            |         |--- classes(存放的是我们自定义的java文件生成的.class文件)
            |         |--- web.xml(当前项目的核心配置文件)
            |         |

常用的项目发布方式:(虚拟目录映射)
        ★方式1:将项目放到tomcat/webapps下

        (了解)方式2:修改 tomcat/conf/server.xml
            大概130行:
                在host标签下 添加如下代码
                    <Context path="/项目名" docBase="项目的磁盘目录"/>
                例如:
                    <Context path="/my" docBase="G:\myweb"/>


        (了解)方式3:
            在tomcat/conf/引擎目录/主机目录下 新建一个xml文件
                文件的名称就是项目名 文件的内容如下:
                    <Context docBase="G:\myweb"/>

web server and tomcat

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