servlet

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/*jadclipse*/// Decompiled by Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov.package javax.servlet.annotation;import java.lang.annotation.Annotation;// Referenced classes of package javax.servlet.annotation://            WebInitParampublic interface WebServlet    extends Annotation{    public abstract String name();    public abstract String[] value();    public abstract String[] urlPatterns();    public abstract int loadOnStartup();    public abstract WebInitParam[] initParams();    public abstract boolean asyncSupported();    public abstract String smallIcon();    public abstract String largeIcon();    public abstract String description();    public abstract String displayName();}

1、创建一个web工程

2、创建测试sevlet，把默认方法都选中就好了，等下看下就知道生命周期了。

package test;import java.io.IOException;import javax.servlet.ServletConfig;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/** * Servlet implementation class TestServlet *  * @author ZengWenFeng */@WebServlet(description = "TestServlet", urlPatterns = {"/TestServlet"})public class TestServlet extends HttpServlet{private static final long serialVersionUID = 1L;/** * @see HttpServlet#HttpServlet() */public TestServlet(){super();System.out.println("TestServlet()");}/** * @see Servlet#init(ServletConfig) */public void init(ServletConfig config) throws ServletException{System.out.println("init");}/** * @see Servlet#destroy() */public void destroy(){System.out.println("destroy");}/** * @see Servlet#getServletConfig() */public ServletConfig getServletConfig(){return null;}/** * @see Servlet#getServletInfo() */public String getServletInfo(){return null;}/** * @see HttpServlet#service(HttpServletRequest request, HttpServletResponse response) *///protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException//{//System.out.println("service");//}/** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{String username = (String)request.getParameter("username");String password = (String)request.getParameter("password");System.out.println(username);System.out.println(password);System.out.println("doGet");}/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{System.out.println("doPost");}/** * @see HttpServlet#doPut(HttpServletRequest, HttpServletResponse) */protected void doPut(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{// TODO Auto-generated method stub}/** * @see HttpServlet#doDelete(HttpServletRequest, HttpServletResponse) */protected void doDelete(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{// TODO Auto-generated method stub}/** * @see HttpServlet#doHead(HttpServletRequest, HttpServletResponse) */protected void doHead(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{// TODO Auto-generated method stub}/** * @see HttpServlet#doOptions(HttpServletRequest, HttpServletResponse) */protected void doOptions(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{// TODO Auto-generated method stub}/** * @see HttpServlet#doTrace(HttpServletRequest, HttpServletResponse) */protected void doTrace(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{// TODO Auto-generated method stub}}

<!DOCTYPE html><html><head><meta charset="UTF-8"><title>Insert title here</title></head><body><form action="TestServlet">username:<input type="text" name="username"></input><br>password:<input type="password" name="password"></input><br><input type="submit"></input></form></body></html>

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">  <display-name>PrjServlet</display-name>  <welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcome-file>index.htm</welcome-file>    <welcome-file>index.jsp</welcome-file>    <welcome-file>default.html</welcome-file>    <welcome-file>default.htm</welcome-file>    <welcome-file>default.jsp</welcome-file>  </welcome-file-list></web-app>

http://127.0.0.1:8089/PrjServlet/index.html2011-5-16 9:04:55 org.apache.tomcat.util.digester.SetPropertiesRule begin警告: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:PrjServlet' did not find a matching property.2011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Server version:        Apache Tomcat/5.5.302011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Server built:          Jun 30 2015 08:08:33 UTC2011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Server number:         5.5.30.02011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: OS Name:               Windows 72011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: OS Version:            6.12011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Architecture:          amd642011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Java Home:             D:\Java\JRE2011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: JVM Version:           1.6.0_45-b062011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: JVM Vendor:            Sun Microsystems Inc.2011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: CATALINA_BASE:         D:\apache-tomcat-5.5.302011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: CATALINA_HOME:         D:\apache-tomcat-5.5.302011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Command line argument: -agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:645132011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Command line argument: -Dcatalina.base=D:\apache-tomcat-5.5.302011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Command line argument: -Dcatalina.home=D:\apache-tomcat-5.5.302011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Command line argument: -Dwtp.deploy=D:\apache-tomcat-5.5.30\webapps2011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Command line argument: -Djava.endorsed.dirs=D:\apache-tomcat-5.5.30\endorsed2011-5-16 9:04:55 org.apache.catalina.startup.VersionLoggerListener log信息: Command line argument: -Dfile.encoding=UTF-82011-5-16 9:04:55 org.apache.catalina.core.AprLifecycleListener lifecycleEvent信息: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: D:\Java\JRE\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;D:\Java\JRE\bin;D:\Java\JDK\bin;D:\Java\JDK\jre\bin;D:\Maven3.2.1\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Microsoft SQL Server\90\Tools\binn\;.2011-5-16 9:04:55 org.apache.coyote.AbstractProtocol init信息: Initializing ProtocolHandler ["http-bio-8089"]2011-5-16 9:04:55 org.apache.coyote.AbstractProtocol init信息: Initializing ProtocolHandler ["ajp-bio-8009"]2011-5-16 9:04:55 org.apache.catalina.startup.Catalina load信息: Initialization processed in 447 ms2011-5-16 9:04:55 org.apache.catalina.core.StandardService startInternal信息: Starting service Catalina2011-5-16 9:04:55 org.apache.catalina.core.StandardEngine startInternal信息: Starting Servlet Engine: Apache Tomcat/5.5.302011-5-16 9:04:55 org.apache.tomcat.websocket.server.WsSci onStartup信息: JSR 356 WebSocket (Java WebSocket 1.1) support is not available when running on Java 6. To suppress this message, run Tomcat on Java 7, remove the WebSocket JARs from $CATALINA_HOME/lib or add the WebSocket JARs to the tomcat.util.scan.DefaultJarScanner.jarsToSkip property in $CATALINA_BASE/conf/catalina.properties. Note that the deprecated Tomcat 7 WebSocket API will be available. 2011-5-16 9:04:55 org.apache.catalina.startup.HostConfig deployDirectory信息: Deploying web application directory D:\apache-tomcat-5.5.30\webapps\ROOT2011-5-16 9:04:56 org.apache.catalina.startup.HostConfig deployDirectory信息: Deployment of web application directory D:\apache-tomcat-5.5.30\webapps\ROOT has finished in 44 ms2011-5-16 9:04:56 org.apache.coyote.AbstractProtocol start信息: Starting ProtocolHandler ["http-bio-8089"]2011-5-16 9:04:56 org.apache.coyote.AbstractProtocol start信息: Starting ProtocolHandler ["ajp-bio-8009"]2011-5-16 9:04:56 org.apache.catalina.startup.Catalina start信息: Server startup in 418 msTestServlet()initservice2011-5-16 9:06:16 org.apache.catalina.core.StandardContext reload信息: Reloading Context with name [/PrjServlet] has starteddestroy2011-5-16 9:06:22 org.apache.catalina.core.StandardContext reload信息: Reloading Context with name [/PrjServlet] is completedTestServlet()initusernamepassworddoGet

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