servlet的映射路径

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FirServlet.java

public class FirServlet extends HttpServlet {public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.getWriter().write("this is servlet01");}}

SecServlet.java

public class SecServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {response.getWriter().write("it is also servlet"); }}

web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"><display-name></display-name><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>servlet</servlet-name><servlet-class>servlet.FirServlet</servlet-class></servlet><servlet><description>This is the description of my J2EE component</description><display-name>This is the display name of my J2EE component</display-name><servlet-name>SecServlet</servlet-name><servlet-class>servlet.SecServlet</servlet-class></servlet><servlet-mapping><servlet-name>servlet</servlet-name><url-pattern>/servlet/firSer</url-pattern></servlet-mapping><servlet-mapping><servlet-name>SecServlet</servlet-name><url-pattern>/servlet/SecServlet</url-pattern></servlet-mapping><welcome-file-list><welcome-file>index.jsp</welcome-file></welcome-file-list></web-app>

运行：

<servlet>与<servlet-mapping>的<servlet-name>属性值需要一致，<servlet-class>写类的全路径，.隔开，<url-pattern>即url访问的后缀：http://127.0.0.1:8080/test_demo01/servlet/SecServlet

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