First, development environment configuration
Step 1: Download J2SDK and Tomcat: to Sun Official Site (http://java.sun.com/j2se/1.4.2/download.html) Download J2SDK, note the download version of the SDK for Windows Offline Installation, and best Download J2SE 1.4.2 Documentation, then download Tomcat (download the latest 4.1.x version of Tomcat) to Tomcat Official Site (http://www.apache.org/dist/jakarta/tomcat-4/);
Step 2: Install and configure your J2SDK and Tomcat: Perform the J2SDK and Tomcat installer, then press the default settings. 1. After installing J2SDK, you need to configure the environment variable, add the following environment variables in my computer -> Properties -> Advanced -> Environment Variables -> System Variables (assuming your J2SDK installed in C: /J2SDK1.4.2): Java_Home = C: /J2SDK1.4.2classpath =.;% Java_home% / lib / dt.jar;% java_home% / lib / Tools.jar; (.; must not be less, because it represents the current path) Path =% java_home / bin then writes a simple Java program to test if J2SDK has been installed successfully: public class test {public static void main (string args []) {system.out.println ("this is a test program.");} } Save the above program as file named Test.java. Then open the command prompt window, CD to your directory in your test.java, and type the following command javac test.javajava test At this time, if you see this is a test program. If you have successful, if you don't print out This sentence, you need to check your configuration carefully.
2. After installing Tomcat, add the following environment variables in my computer -> Properties -> Advanced -> Environment Variables -> System Variables (assuming your Tomcat is installed in C: / Tomcat): Catalina_Home = C: / Tomcat; Catalina_Base = C: / tomcat; then modify the classpath in the environment variable, add servlet.jar under the Tomat installation directory to the ClassPath, the modified ClassPath is as follows: classpath =.;% java_home / lib / Dt.jar;% java_home% / lib / Tools.jar;% catalina_home% / common / lib / servlet.jar; modified PATH as follows: Path =.;% java_home% / bin; then start Tomcat, in IE Access http: // localhost: 8080, if you see Tomcat's Welcome page, the installation is successful.
Step 3: Establish your own JSP App Content 1. WebApps directory for Tomcat installation directory, you can see the directory of Tomcat, which root, example, tomcat-docs, and Tomcat; 2. New directory in the WebApps directory, Name called myapp; 3. MYApp New Directory Web-INF, note that the directory name is case sensitive; 4.Web-infers new file web.xml, the content is as follows:
Step 4: Establish your own servlet: 1. Use your most familiar editor (recommended using a syntax-check Java IDE) to create a new servlet.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 ( "
