18 | | = 2. 實做 = |
| 21 | 3. [http://secuse.nchc.org.tw/jspservlet/eclipse-SDK-3.5.2-linux-gtk.tar.gz 下載 eclipse 3.5 linux版] |
| 22 | |
| 23 | = 二. 實做簡單的 servlet 範例 = |
| 24 | |
| 25 | * 已將tomcat 安裝於 /opt/tomcat/ 目錄下 |
| 26 | == 2.1 == |
| 27 | |
| 28 | {{{ |
| 29 | cd /opt/tomcat/webapps/ |
| 30 | mkdir -p /opt/tomcat/webapps/FirstServlet/WEB-INF/classes |
| 31 | mkdir /opt/tomcat/webapps/FirstServlet/WEB-INF/lib |
| 32 | cd /opt/tomcat/webapps/FirstServlet/WEB-INF/classes |
| 33 | gedit HelloServlet.java |
| 34 | }}} |
| 35 | |
| 36 | |
| 37 | {{{ |
| 38 | #!java |
| 39 | import java.io.IOException; |
| 40 | import java.io.PrintWriter; |
| 41 | import javax.servlet.ServletException; |
| 42 | import javax.servlet.http.HttpServlet; |
| 43 | import javax.servlet.http.HttpServletRequest; |
| 44 | import javax.servlet.http.HttpServletResponse; |
| 45 | |
| 46 | public class HelloServlet extends HttpServlet { |
| 47 | protected void doGet(HttpServletRequest request, |
| 48 | HttpServletResponse response) |
| 49 | throws ServletException, IOException { |
| 50 | response.setContentType("text/html;charset=UTF-8"); |
| 51 | PrintWriter out = response.getWriter(); |
| 52 | String name = request.getParameter("name"); |
| 53 | out.println("<html>"); |
| 54 | out.println("<head>"); |
| 55 | out.println("<title>Hello Servlet</title>"); |
| 56 | out.println("</head>"); |
| 57 | out.println("<body>"); |
| 58 | out.println("<h1> Hello! " + name + " !</h1>"); |
| 59 | out.println("</body>"); |
| 60 | out.println("</html>"); |
| 61 | out.close(); |
| 62 | } |
| 63 | } |
| 64 | |
| 65 | }}} |
| 66 | |
| 67 | |
| 68 | {{{ |
| 69 | cd /opt/tomcat/webapps/FirstServlet/WEB-INF/classes |
| 70 | javac -classpath /opt/tomcat/lib/servlet-api.jar ./HelloServlet.java |
| 71 | }}} |
| 72 | |
| 73 | |
| 74 | {{{ |
| 75 | #!xml |
| 76 | <?xml version="1.0" encoding="UTF-8"?> |
| 77 | <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" |
| 78 | xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" |
| 79 | xsi:schemaLocation="http://java.sun.com/xml/ns/javaee |
| 80 | http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> |
| 81 | <servlet> |
| 82 | <servlet-name>HelloServlet</servlet-name> |
| 83 | <servlet-class>HelloServlet</servlet-class> |
| 84 | </servlet> |
| 85 | <servlet-mapping> |
| 86 | <servlet-name>HelloServlet</servlet-name> |
| 87 | <url-pattern>/hello.do</url-pattern> |
| 88 | </servlet-mapping> |
| 89 | </web-app> |
| 90 | |
| 91 | }}} |
| 92 | |
| 93 | |
| 94 | {{{ |
| 95 | cd /opt/tomcat |
| 96 | bin/startup.sh |
| 97 | }}} |
| 98 | |
| 99 | |
| 100 | [http://localhost:8080/FirstServlet/hello.do?name=caterpillar] |
| 101 | |
| 102 | == 2.1 == |
| 103 | |
| 104 | == 2.1 == |
| 105 | |
| 106 | == 2.1 == |
| 107 | |
| 108 | |
| 109 | |