Servlet 示例 类定义 编写接收 HTTP 请求并进行 HTTP 响应的 Servlet 需要继承 javax.servlet.http.HttpServlet。 1 public class LoginAction extends HttpServlet { 2 // Code goes on. 3 } 大纲 Web 基础 Servlet 概述 Servlet 编程 Servlet 生命周期 生命周期 Servlet 配置 Servlet 部署 Servlet 示例 重写 doGet 方法 父类 HttpServlet 的 doGet 方法是空的，没有实现任何代码，子 类需要重写此方法。 2 public void doGet(HttpServletRequest request, HttpServletResponse response) 3 throws ServletException doGet() doPost() Get Request Post Request Response Response Web Server HttpServlet subclass 注意： 方法由 HttpServlet 的子类实现 大纲 Web 基础 Servlet 概述 Servlet 编程 Servlet 生命周期 Servlet 配置 Servlet 部署 Servlet

names from a properties file * DispatcherServlet does not override "doHead" anymore, leveraging HttpServlet's default "HEAD" handling via "doGet" * factored out protected "resolveViewName" method from DispatcherServlet's exposing them as ServletContext attributes * added ServletContextPropertyPlaceholderConfigurer, a subclass that falls back to web.xml context-param entries * changed HttpServletBean and GenericFilterBean falling back to root WebApplicationContext and JSTL/request locale * added JspAwareRequestContext as subclass of RequestContext, populated from JSP PageContext (and aware of page scope) * Spring JSP tags work

or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor erceptor into subclasses of AbstractTraceInterceptor * reworked DebugInterceptor into a subclass of SimpleTraceInterceptor * added CustomizableTraceInterceptor, supporting pattern-based enter and exit uses it Package org.springframework.dao * reworked IncorrectResultSizeDataAccessException into subclass of DataRetrievalFailureException Package org.springframework.jca * removed overloaded "getConnection"

or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor erceptor into subclasses of AbstractTraceInterceptor * reworked DebugInterceptor into a subclass of SimpleTraceInterceptor * added CustomizableTraceInterceptor, supporting pattern-based enter and exit uses it Package org.springframework.dao * reworked IncorrectResultSizeDataAccessException into subclass of DataRetrievalFailureException Package org.springframework.jca * removed overloaded "getConnection"

or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor erceptor into subclasses of AbstractTraceInterceptor * reworked DebugInterceptor into a subclass of SimpleTraceInterceptor * added CustomizableTraceInterceptor, supporting pattern-based enter and exit uses it Package org.springframework.dao * reworked IncorrectResultSizeDataAccessException into subclass of DataRetrievalFailureException Package org.springframework.jca * removed overloaded "getConnection"

springframework.jms * factored out JmsDestinationAccessor from JmsTemplate, as a more specialized subclass of JmsAccessor * merged all of JmsTemplate/JmsTemplate102's "createConsumer" template methods into or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor erceptor into subclasses of AbstractTraceInterceptor * reworked DebugInterceptor into a subclass of SimpleTraceInterceptor * added CustomizableTraceInterceptor, supporting pattern-based enter and exit

or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor erceptor into subclasses of AbstractTraceInterceptor * reworked DebugInterceptor into a subclass of SimpleTraceInterceptor * added CustomizableTraceInterceptor, supporting pattern-based enter and exit uses it Package org.springframework.dao * reworked IncorrectResultSizeDataAccessException into subclass of DataRetrievalFailureException Package org.springframework.jca * removed overloaded "getConnection"

or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor erceptor into subclasses of AbstractTraceInterceptor * reworked DebugInterceptor into a subclass of SimpleTraceInterceptor * added CustomizableTraceInterceptor, supporting pattern-based enter and exit uses it Package org.springframework.dao * reworked IncorrectResultSizeDataAccessException into subclass of DataRetrievalFailureException Package org.springframework.jca * removed overloaded "getConnection"

NestedServletException with original root cause * added VelocityLayoutViewResolver, a convenience subclass of VelocityViewResolver with support for VelocityLayoutView * added "useSingleModelNameAsRoot" transformer output properties * added JasperReportsViewResolver as convenient UrlBasedViewResolver subclass, analogous to InternalResourceViewResolver Changes in version 1.2.5 (23.9.2005) ------------- springframework.jms * factored out JmsDestinationAccessor from JmsTemplate, as a more specialized subclass of JmsAccessor * merged all of JmsTemplate/JmsTemplate102's "createConsumer" template methods into

transformer output properties * added JasperReportsViewResolver as convenient UrlBasedViewResolver subclass, analogous to InternalResourceViewResolver Changes in version 1.2.5 (23.9.2005) ------------- springframework.jms * factored out JmsDestinationAccessor from JmsTemplate, as a more specialized subclass of JmsAccessor * merged all of JmsTemplate/JmsTemplate102's "createConsumer" template methods into or a dynamic logger * deprecated TraceInterceptor in favor of SimpleTraceInterceptor, which is a subclass of AbstractTraceInterceptor * reworked PerformanceMonitorInterceptor/JamonPerformanceMonitorInterceptor