【免费】servletAPI资源-CSDN文库

共104个文件

html：100个

css：1个

package-list：1个

需积分: 0 54 浏览量 2008-09-13 18:25:17 上传评论收藏 262KB RAR 举报

Servlet API是Java Web开发中的核心组件，主要用于构建动态web应用程序。它是由Java Servlet规范定义的一组接口和类，提供了一种标准的方式来处理HTTP请求和响应。在这个话题中，我们将深入探讨Servlet API的主要概念、关键类和接口，以及它们在实际应用中的作用。 1. **Servlet接口** Servlet接口是所有Servlet类的基础，它定义了Servlet的核心方法，如`init()`, `service()`, `destroy()`和`getServletConfig()`。`init()`方法在Servlet实例化后被调用，用于初始化Servlet；`service()`方法处理客户端的请求；`destroy()`方法在Servlet生命周期结束时调用，用于清理资源；`getServletConfig()`则返回Servlet的配置信息。 2. **GenericServlet类** GenericServlet是一个抽象类，实现了Servlet接口。它提供了通用的`service()`方法来处理各种类型的请求，但通常需要子类化并覆盖`service()`以实现特定的业务逻辑。 3. **HttpServlet类** HttpServlet是GenericServlet的子类，专为处理HTTP协议设计。它提供了更具体的`doGet()`, `doPost()`, `doPut()`, `doDelete()`等方法，分别对应HTTP的GET, POST, PUT, DELETE等请求方法。开发人员通常会继承HttpServlet，并重写这些方法以实现HTTP请求的处理逻辑。 4. **ServletConfig接口** ServletConfig接口代表了Servlet的配置信息，由web服务器在Servlet实例化时提供。它包含了如Servlet名称、初始化参数等配置数据，可通过`getInitParameter()`获取。 5. **ServletContext接口** ServletContext代表了整个web应用程序的上下文，它提供了访问应用程序级的配置信息、共享数据、以及与其他Servlet交互的能力。例如，可以使用`getAttribute()`和`setAttribute()`来存储和检索全局变量。 6. **Request和Response对象** HttpServletRequest和HttpServletResponse接口分别代表了HTTP请求和响应。它们提供了访问请求头、参数、会话等信息，以及构造和发送响应的方法。例如，`getParameter()`用于获取请求参数，`setHeader()`用于设置响应头。 7. **Filter和FilterChain** Filter接口用于实现请求过滤功能，允许在请求到达Servlet之前或之后进行拦截和处理。FilterChain接口则代表了一个过滤器链，使得多个过滤器可以按顺序执行。 8. **Servlet生命周期** Servlet的生命周期包括加载、初始化、服务、销毁四个阶段。通过`@WebServlet`注解或web.xml配置文件可以指定Servlet的加载时机。生命周期管理有助于优化资源使用，确保Servlet在不使用时能够被释放。 9. **部署描述符（web.xml）** 部署描述符是web应用程序的配置文件，定义了Servlet、Filter、监听器等组件的配置信息。它用于指导容器如何加载和管理web应用。 10. **Servlet的线程安全性** Servlet本身不是线程安全的，因为容器会为每个请求创建一个新的线程来调用Servlet的`service()`方法。开发者需要考虑并发访问时可能出现的问题，并采取适当的同步措施。总结，Servlet API是Java Web开发的关键组成部分，提供了处理HTTP请求、管理应用上下文、实现过滤和会话管理等功能。理解并熟练使用Servlet API是成为一名合格的Java Web开发者的基础。在实际开发中，还需要结合MVC框架如Spring MVC，以及现代的Java Web库来提升效率和代码质量。

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servlet API （104个子文件）

stylesheet.css 1KB

Thumbs.db 3KB

inherit.gif 57B

index-all.html 170KB

HttpServletResponse.html 71KB

HttpServletRequestWrapper.html 52KB

ServletRequestWrapper.html 48KB

HttpServletRequest.html 47KB

HttpServletResponseWrapper.html 45KB

ServletContext.html 45KB

HttpServlet.html 44KB

ServletRequest.html 43KB

ServletResponse.html 35KB

ServletResponseWrapper.html 34KB

HttpSession.html 30KB

GenericServlet.html 29KB

Cookie.html 29KB

ServletOutputStream.html 24KB

ServletException.html 24KB

constant-values.html 24KB

ServletRequest.html 21KB

UnavailableException.html 20KB

ServletResponse.html 19KB

HttpSessionBindingEvent.html 18KB

Servlet.html 18KB

HttpServletRequest.html 17KB

deprecated-list.html 16KB

HttpServletResponse.html 16KB

package-use.html 16KB

ServletContext.html 15KB

ServletRequestAttributeEvent.html 15KB

HttpUtils.html 15KB

RequestDispatcher.html 15KB

package-summary.html 15KB

ServletException.html 14KB

ServletContextAttributeEvent.html 14KB

Filter.html 14KB

ServletRequestEvent.html 14KB

HttpSession.html 13KB

serialized-form.html 13KB

overview-tree.html 13KB

Servlet.html 13KB

ServletContextEvent.html 12KB

ServletConfig.html 12KB

ServletInputStream.html 12KB

ServletConfig.html 12KB

package-summary.html 12KB

HttpSessionEvent.html 12KB

FilterConfig.html 12KB

ServletRequestAttributeListener.html 12KB

ServletContextAttributeListener.html 12KB

HttpSessionBindingListener.html 11KB

HttpSessionAttributeListener.html 11KB

HttpSessionEvent.html 11KB

HttpSessionBindingEvent.html 11KB

HttpSessionContext.html 10KB

ServletContextListener.html 10KB

package-tree.html 10KB

ServletInputStream.html 10KB

HttpSessionActivationListener.html 10KB

package-tree.html 10KB

ServletRequestListener.html 10KB

HttpSessionListener.html 10KB

FilterChain.html 10KB

RequestDispatcher.html 10KB

Cookie.html 10KB

package-use.html 10KB

ServletContextEvent.html 9KB

ServletRequestEvent.html 9KB

ServletContextAttributeEvent.html 9KB

ServletRequestAttributeEvent.html 9KB

help-doc.html 9KB

ServletOutputStream.html 8KB

FilterChain.html 8KB

SingleThreadModel.html 8KB

HttpSessionContext.html 8KB

ServletResponseWrapper.html 8KB

ServletRequestWrapper.html 8KB

FilterConfig.html 8KB

GenericServlet.html 8KB

overview-summary.html 6KB

allclasses-frame.html 6KB

HttpSessionActivationListener.html 6KB

HttpSessionAttributeListener.html 6KB

HttpSessionBindingListener.html 6KB

HttpServletResponseWrapper.html 6KB

HttpServletRequestWrapper.html 6KB

ServletRequestAttributeListener.html 6KB

ServletContextAttributeListener.html 6KB

HttpSessionListener.html 6KB

ServletRequestListener.html 6KB

ServletContextListener.html 6KB

HttpServlet.html 6KB

HttpUtils.html 6KB

UnavailableException.html 6KB

SingleThreadModel.html 6KB

Filter.html 6KB

allclasses-noframe.html 5KB

package-frame.html 4KB

package-frame.html 3KB

共 104 条

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <HTML> <HEAD>  <TITLE> Index (Servlet API Documentation) </TITLE> <LINK REL ="stylesheet" TYPE="text/css" HREF="stylesheet.css" TITLE="Style"> <SCRIPT type="text/javascript"> function windowTitle() { parent.document.title="Index (Servlet API Documentation)"; } </SCRIPT> </HEAD> <BODY BGCOLOR="white" onload="windowTitle();">  <A NAME="navbar_top"></A> <A HREF="#skip-navbar_top" title="Skip navigation links"></A> <TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""> <TR> <TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A NAME="navbar_top_firstrow"></A> <TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="overview-summary.html">Overview</A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> Package </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> Class </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> Use </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="overview-tree.html">Tree</A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="deprecated-list.html">Deprecated</A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev">  Index </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="help-doc.html">Help</A> </TD> </TR> </TABLE> </TD> <TD ALIGN="right" VALIGN="top" ROWSPAN=3> </TD> </TR> <TR> <TD BGCOLOR="white" CLASS="NavBarCell2">  PREV   NEXT</TD> <TD BGCOLOR="white" CLASS="NavBarCell2"> <A HREF="index.html" target="_top">FRAMES</A>    <A HREF="index-all.html" target="_top">NO FRAMES</A>    <SCRIPT type="text/javascript">  </SCRIPT> <NOSCRIPT> <A HREF="allclasses-noframe.html">All Classes</A> </NOSCRIPT> </TD> </TR> </TABLE> <A NAME="skip-navbar_top"></A>  <A HREF="#_A_">A</A> <A HREF="#_B_">B</A> <A HREF="#_C_">C</A> <A HREF="#_D_">D</A> <A HREF="#_E_">E</A> <A HREF="#_F_">F</A> <A HREF="#_G_">G</A> <A HREF="#_H_">H</A> <A HREF="#_I_">I</A> <A HREF="#_J_">J</A> <A HREF="#_L_">L</A> <A HREF="#_P_">P</A> <A HREF="#_R_">R</A> <A HREF="#_S_">S</A> <A HREF="#_U_">U</A> <A HREF="#_V_">V</A> <HR> <A NAME="_A_"></A><H2> A</H2> <DL> <DT><A HREF="javax/servlet/http/HttpServletResponse.html#addCookie(javax.servlet.http.Cookie)">addCookie(Cookie)</A> - Method in interface javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponse.html" title="interface in javax.servlet.http">HttpServletResponse</A> <DD>Adds the specified cookie to the response. <DT><A HREF="javax/servlet/http/HttpServletResponseWrapper.html#addCookie(javax.servlet.http.Cookie)">addCookie(Cookie)</A> - Method in class javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponseWrapper.html" title="class in javax.servlet.http">HttpServletResponseWrapper</A> <DD>The default behavior of this method is to call addCookie(Cookie cookie) on the wrapped response object. <DT><A HREF="javax/servlet/http/HttpServletResponse.html#addDateHeader(java.lang.String, long)">addDateHeader(String, long)</A> - Method in interface javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponse.html" title="interface in javax.servlet.http">HttpServletResponse</A> <DD>Adds a response header with the given name and date-value. <DT><A HREF="javax/servlet/http/HttpServletResponseWrapper.html#addDateHeader(java.lang.String, long)">addDateHeader(String, long)</A> - Method in class javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponseWrapper.html" title="class in javax.servlet.http">HttpServletResponseWrapper</A> <DD>The default behavior of this method is to call addDateHeader(String name, long date) on the wrapped response object. <DT><A HREF="javax/servlet/http/HttpServletResponse.html#addHeader(java.lang.String, java.lang.String)">addHeader(String, String)</A> - Method in interface javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponse.html" title="interface in javax.servlet.http">HttpServletResponse</A> <DD>Adds a response header with the given name and value. <DT><A HREF="javax/servlet/http/HttpServletResponseWrapper.html#addHeader(java.lang.String, java.lang.String)">addHeader(String, String)</A> - Method in class javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponseWrapper.html" title="class in javax.servlet.http">HttpServletResponseWrapper</A> <DD>The default behavior of this method is to return addHeader(String name, String value) on the wrapped response object. <DT><A HREF="javax/servlet/http/HttpServletResponse.html#addIntHeader(java.lang.String, int)">addIntHeader(String, int)</A> - Method in interface javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponse.html" title="interface in javax.servlet.http">HttpServletResponse</A> <DD>Adds a response header with the given name and integer value. <DT><A HREF="javax/servlet/http/HttpServletResponseWrapper.html#addIntHeader(java.lang.String, int)">addIntHeader(String, int)</A> - Method in class javax.servlet.http.<A HREF="javax/servlet/http/HttpServletResponseWrapper.html" title="class in javax.servlet.http">HttpServletResponseWrapper</A> <DD>The default behavior of this method is to call addIntHeader(String name, int value) on the wrapped response object. <DT><A HREF="javax/servlet/ServletContextAttributeListener.html#attributeAdded(javax.servlet.ServletContextAttributeEvent)">attributeAdded(ServletContextAttributeEvent)</A> - Method in interface javax.servlet.<A HREF="javax/servlet/ServletContextAttributeListener.html" title="interface in javax.servlet">ServletContextAttributeListener</A> <DD>Notification that a new attribute was added to the servlet context. <DT><A HREF="javax/servlet/ServletRequestAttributeListener.html#attributeAdded(javax.servlet.ServletRequestAttributeEvent)">attributeAdded(ServletRequestAttributeEvent)</A> - Method in interface javax.servlet.<A HREF="javax/servlet/ServletRequestAttributeListener.html" title="interface in javax.servlet">ServletRequestAttributeListener</A> <DD>Notification that a new attribute was added to the servlet request. <DT><A HREF="javax/servlet/http/HttpSessionAttributeListener.html#attributeAdded(javax.servlet.http.HttpSessionBindingEvent)">attributeAdded(HttpSessionBindingEvent)</A> - Method in interface javax.servlet.http.<A HREF="javax/servlet/http/HttpSessionAttributeListener.html" title="interface in javax.servlet.http">HttpSessionAttributeListener</A> <DD>Notification that an attribute has been added to a session. <DT><A HREF="javax/servlet/ServletContextAttributeListener.html#attributeRemoved(javax.servlet.ServletContextAttributeEvent)">attributeRemoved(ServletContextAttributeEvent)</A> - Method in interface javax.servlet.<A HREF="javax/servlet/ServletContextAttributeListener.html" title="interface in javax.servlet">ServletContextAttributeListener</A> <DD>Notification that an existing attribute has been removed from the servlet context. <DT><A HREF="javax/servlet/ServletRequ