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 test / test This paragraph in this paragraph declares that the servlet you want to call, and servlet-mapping is a servlet that will declare. " Mapping "to address / TEST 5. Ok, start Tomcat, start the browser, enter http: // localhost: 8080 / myapp / test If you see the output this is a servlet test. The written servlet is successful. Note: Modify Web.xml and new Class, you must restart Tomcat

Step 4: Establish your own bean: 1. Use the editor you are most familiar with (recommended using the Java IDE with syntax check), the file name is TestBean.java, the file content is 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, compile: C: / test> Javac testBean.java then generate a compiled bean file under C: / Test: TestBean.class 3. TestBean.class file cut to% catalina_home% / WebApps / myapp / web-inf / class / test, 4. New TestBean.jsp file, file content is: <% @ page import = "test.testbean"%>

<% testbean testbean = new testbean ("this is a test java bean);%> java bean name is: <% = testbean.getname ()%> < / body> 5. Ok, restart Tomcat, start your browser, enter http: // localhost: 8080 / myapp / testbean.jsp If you see the output Java Bean name is: this is a test java bean. The bean written 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. (Finally, add solution: If your Tomcat4.1 is installed in C: /, your JDK is installed in C: /, then copy the servlet.jar under the C: / Tomcat 4.1 / Common / Lib directory to C: / J2SDK1.4 / JRE / lib / ext, it is solved

If you use jcreator to compile, you have to point out the path of this package, method is: jcreator -> configure -> Options -> JDK Profiles -> Select J2SDK1.4 -> Click "Edit" button -> Click "Add" -> Click "Add Package" - and add the servlet.jar package. )