Step 4: Establish your own servlet: 1. Creating a servlet program with your most familiar editor (recommended using syntax-check Java IDE), the file name is Test.java, the file content is as follows: package test; import Java. io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; public class Test extends HttpServlet {protected void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {PrintWriter out = response.getWriter (); out.println ( "

This is a servlet test <. / body> "); out.flush ();}} 2. Compile Test.java Under C: / Test, compile: C: / Test> Javac Test.java then in C : / Test will generate a compiled servlet file: Test.class 3. Cut the structure test / test.class to% catalina_home% / WebApps / myapp / web-inf / class, that is, cut the Test directory In the CLASSES directory, if the classes directory does not exist, create a new one.

Now WebApps / MyApp / Web-INF / CLASSES has the file directory structure 4. Modify WebApps / MyApp / Web-INF / Web.xml, add servlet and servlet-mapping, Web.xml as follows Sign, red is added: My Web Application a application for test. test test a test servlet test.test < / servlet-class> test / test The servlet in this paragraph declares the servlet you want to call, and servlet-mapping is the declared servlet "mapping" to address / TEST 5. Ok, restart Tomcat, start your browser, enter http : // localhost: 8080 / myapp / test If you see the output this is a servlet test. The written servlet is successful.

Note: Web.xml and new Class, you must restart Tomcat Step 4: Establish your own bean: 1. Create a new Java program with the editor you are most familiar with (recommended using syntax-check Java IDE). file name TestBean.java, file contents as follows: package test; public class TestBean {private String name = null; public TestBean (String strName_p) {this.name = strName_p;} public void setName (String strName_p) {this.name = Strname_p;} public string getName () {return this.name;}} 2. Compile TestBean.java Under C: / Test, use the following command to compile: C: / test> javac testBean.java then in C: / Test will generate a compiled bean file: TestBean.class 3. Cut the TestBean.class file to% catalina_home% / WebApps / myapp / web-inf / class, 4. New TestBean.jsp file, The content of the file is: <% @ page import = "test.testbean"%>

<% testbean testbean = new testbean ("this is a test java bean.");%> Java bean name IS: <% = TestBean.getName ()%> 5. Ok, restart Tomcat, start the browser, enter http: // localhost: 8080 / myapp / testbean.jsp If you see the output java bean name is: this is a test java bean. The written bean is successful. This completes the configuration of JSP, Servlet, and JavaBean under Tomcat. The next thing you need is to read more books, read more people's good code, yourself to write your code to enhance your ability to develop in this regard. JVM should be filled in c: / j2sdk / bin gives you a simple configuration ::: JSP environment configuration The first thing is to say, using JDK Tomcat to configure our JSP server, no longer need any stuff, There are many articles to introduce apache, in fact, it is not necessary, and the general learning debug Tomcat can be eligible. After installing JDK, Tomcat will automatically find the JDK installation path before installing, and click "Next". After a period of file copying, final "close", complete the COMCAT installation.

You'd better download a higher version of Tomcat, such as more than 4.1, because it does not need to set too much system variable, right click "My Computer", select "Properties" -> "->" environment variable "->" System Variable ", new Tomcat_Home, value set to your Tomcat where the path is located, such as: D: / Program Files / Apache Group / Tomcat 4.1, the configuration is completed. From the start menu, find the Tomcat option, the order is: Start-> Program -> Apache Tomcat 4.1, select "Start Tomcat", let the JSP server start running, this time open a similar DOS window, will display some related information. If you use the agent to go online, you must first remove the agent, or your JSP program will never be executed. If it is not an agent, this step is skipping. Open the browser and enter: http:// localhost: 8080, if you see a tiger (I don't know whether it is a tiger or cat), congratulations, you have succeeded half. Let's enjoy the joy of success, please enter the following code: