个人中心
gpt4 book ai didi

servlet和tomcat_动力节点Java学院整理

转载 作者：qq735679552 更新时间：2022-09-29 22:32:09 26 4
gpt4 key购买 nike

CFSDN坚持开源创造价值，我们致力于搭建一个资源共享平台，让每一个IT人在这里找到属于你的精彩世界.

这篇CFSDN的博客文章servlet和tomcat_动力节点Java学院整理由作者收集整理，如果你对这篇文章有兴趣，记得点赞哟.

Servlet是什么 为了能让Web服务器与Web应用这两个不同的软件系统协作，需要一套标准接口，Servlet就是其中最主要的一个接口.

规定:

Web服务器可以访问任意一个Web应用中实现Servlet接口的类.

Web应用中用于被Web服务器动态调用的程序代码位于Servlet接口的实现类中.

SUN公司（现在被Oracle收购了……）制定了Web应用于Web服务器进行协作的一系列标准Java接口（统称为Java Servlet API）.

SUN公司还对Web服务器发布及运行Web应用的一些细节做了规约。SUN公司把这一系列标准Java接口和规约统称为Servlet规范.

Servlet是一种运行在服务器上的小插件.

Servlet容器是什么 。

在Servlet规范中，把能够发布和运行JavaWeb应用的Web服务器称为Servlet容器，他的最主要特称是动态执行JavaWeb应用中的Servlet实现类中的程序代码.

Tomcat是什么 。

Tomcat是Servlet容器，同时也是轻量级的Web服务器.

Apache Server、Microsoft IIS、Apache Tomcat都是Web服务器.

Tomcat作为Web服务器时，主要负责实现HTTP传输等工作.

Tomcat作为Servlet容器时，主要负责解析Request，生成ServletRequest、ServletResponse，将其传给相应的Servlet（调用service( )方法），再将Servlet的相应结果返回.

Tomcat组成结构 。

servlet和tomcat_动力节点Java学院整理

Server，代表整个Servlet容器组件，是Tomcat的顶层元素。其中可以包含一到多个Service； 。

Service，包含一个Engine，以及一到多个Connector； 。

Connector，代表和客户端程序实际交互的组件，负责接收客户请求，以及向客户返回响应结果； 。

Engine，处理同一个Service中所有Connector接收到的客户请求； 。

Host，在Engine中可以包含多个Host，每个Host定义了一个虚拟主机，它可以包含一个到多个Web应用； 。

Context，一个Host中可以包含多个Context，每个Context代表了运行在虚拟主机上的单个Web应用.

这些字段都在conf/server.xml中配置，下面是一段apache tomcat 6.0.36默认的server.xml:

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
<? xml version = '1.0' encoding = 'utf-8' ?>
<!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements. See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License. You may obtain a copy of the License at
 
    http://www.apache.org/licenses/LICENSE-2.0
 
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
-->
<!-- Note: A "Server" is not itself a "Container", so you may not
    define subcomponents such as "Valves" at this level.
   Documentation at /docs/config/server.html
  -->
< Server port = "8005" shutdown = "SHUTDOWN" >
 
  <!--APR library loader. Documentation at /docs/apr.html -->
  < Listener className = "org.apache.catalina.core.AprLifecycleListener" SSLEngine = "on" />
  <!--Initialize Jasper prior to webapps are loaded. Documentation at /docs/jasper-howto.html -->
  < Listener className = "org.apache.catalina.core.JasperListener" />
  <!-- Prevent memory leaks due to use of particular java/javax APIs-->
  < Listener className = "org.apache.catalina.core.JreMemoryLeakPreventionListener" />
  <!-- JMX Support for the Tomcat server. Documentation at /docs/non-existent.html -->
  < Listener className = "org.apache.catalina.mbeans.ServerLifecycleListener" />
  < Listener className = "org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
 
  <!-- Global JNDI resources
     Documentation at /docs/jndi-resources-howtohtml
  -->
  < GlobalNamingResources >
   <!-- Editable user database that can also be used by
      UserDatabaseRealm to authenticate users
   -->
   < Resource name = "UserDatabase" auth = "Container"
        type = "org.apache.catalina.UserDatabase"
        description = "User database that can be updated and saved"
        factory = "org.apache.catalina.users.MemoryUserDatabaseFactory"
        pathname = "conf/tomcat-users.xml" />
  </ GlobalNamingResources >
 
  <!-- A "Service" is a collection of one or more "Connectors" that share
     a single "Container" Note: A "Service" is not itself a "Container", 
     so you may not define subcomponents such as "Valves" at this level.
     Documentation at /docs/config/service.html
   -->
  < Service name = "Catalina" >
  
   <!--The connectors can use a shared executor, you can define one or more named thread pools-->
   <!--
   <Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
     maxThreads="150" minSpareThreads="4"/>
   -->
   
   
   <!-- A "Connector" represents an endpoint by which requests are received
      and responses are returned. Documentation at :
      Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)
     Java AJP Connector: /docs/config/ajp.html
     APR (HTTP/AJP) Connector: /docs/apr.html
      Define a non-SSL HTTP/1 Connector on port 8080
   -->
   < Connector port = "8080" protocol = "HTTP/1.1"
         connectionTimeout = "20000"
         redirectPort = "8443" />
   <!-- A "Connector" using the shared thread pool-->
   <!--
   <Connector executor="tomcatThreadPool"
         port="8080" protocol="HTTP/1.1" 
         connectionTimeout="20000" 
         redirectPort="8443" />
   -->      
   <!-- Define a SSL HTTP/1.1 Connector on port 8443
      This connector uses the JSSE configuration, when using APR, the 
      connector should be using the OpenSSL style configuration
      described in the APR documentation -->
   <!--
   <Connector port="8443" protocol="HTTP/1" SSLEnabled="true"
         maxThreads="150" scheme="https" secure="true"
         clientAuth="false" sslProtocol="TLS" />
   -->
 
   <!-- Define an AJP 1.3 Connector on port 8009 -->
   < Connector port = "8009" protocol = "AJP/1.3" redirectPort = "8443" />
 
 
   <!-- An Engine represents the entry point (within Catalina) that processes
      every request The Engine implementation for Tomcat stand alone
      analyzes the HTTP headers included with the request, and passes them
     on to the appropriate Host (virtual host).
     Documentation at /docs/config/engine.html -->
 
   <!-- You should set jvmRoute to support load-balancing via AJP ie :
   <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">     
   -->
   < Engine name = "Catalina" defaultHost = "localhost" >
 
    <!--For clustering, please take a look at documentation at:
      /docs/cluster-howto.html (simple how to)
      /docs/config/cluster.html (reference documentation) -->
    <!--
    <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/>
    -->    
 
    <!-- The request dumper valve dumps useful debugging information about
       the request and response data received and sent by Tomcat.
       Documentation at: /docs/config/valve.html -->
    <!--
    <Valve className="org.apache.catalina.valves.RequestDumperValve"/>
    -->
 
    <!-- This Realm uses the UserDatabase configured in the global JNDI
       resources under the key "UserDatabase". Any edits
       that are performed against this UserDatabase are immediately
       available for use by the Realm. -->
    < Realm className = "org.apache.catalina.realm.UserDatabaseRealm"
        resourceName = "UserDatabase" />
 
    <!-- Define the default virtual host
       Note: XML Schema validation will not work with Xerces 2.2.
     -->
    < Host name = "localhost" appBase = "webapps"
       unpackWARs = "true" autoDeploy = "true"
       xmlValidation = "false" xmlNamespaceAware = "false" >
 
     <!-- SingleSignOn valve, share authentication between web applications
        Documentation at: /docs/config/valve.html -->
     <!--
     <Valve className="org.apache.catalina.authenticator.SingleSignOn" />
     -->
 
     <!-- Access log processes all example.
        Documentation at: /docs/config/valve.html -->
     <!--
     <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" 
         prefix="localhost_access_log." suffix=".txt" pattern="common" resolveHosts="false"/>
     -->
 
    </ Host >
   </ Engine >
  </ Service >
</ Server >

  。

最后此篇关于servlet和tomcat_动力节点Java学院整理的文章就讲到这里了,如果你想了解更多关于servlet和tomcat_动力节点Java学院整理的内容请搜索CFSDN的文章或继续浏览相关文章，希望大家以后支持我的博客！ 。

26 4 0
文章推荐： 微服务领域Spring Boot自动伸缩的实现方法
文章推荐： 使用Maven 搭建 Spring MVC 本地部署Tomcat的详细教程
文章推荐： 对ArrayList和LinkedList底层实现原理详解
文章推荐： startActivityForResult和setResult案例详解
qq735679552
个人简介

我是一名优秀的程序员,十分优秀！

滴滴打车优惠券免费领取
滴滴打车优惠券
全站热门文章
Copyright 2021 - 2024 cfsdn All Rights Reserved 蜀ICP备2022000587号
广告合作:1813099741@qq.com 6ren.com