Implementation
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3.3 IMPLEMENTATION Servlet Environment and Role: A servlet is a java component that can be plugged into a javaenabled Web server to provide custom services. These services can include: New Features Runtime changes to content Runtime changes to presentation New standard protocols (such as FTP) New custom protocols Servlets are designed to work within a request/responseprocessing model. In a request/response model, a client sends request message to a server and the server responds by sending back a reply message. Requests can come in the form of an or a custom protocol. HTTP URL FTP URL INSTALLING SERVLETS: Servlets are not run in the same sense as applets and applications. Servlets provide functionality that extends a server. In order to test a servlet, two steps are required: 46 Dept of C.S.E., Narayana Engineering College.,Nellore.
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1. Install the servlet in a hosting server. 2. Request a servlet’s service via a client request. There are many web servers that support servlets. It is beyond the scope of this course to cover the different ways to install servlets in each server. This course examines the JSDK’s servlet runner utility and the JWS. USING SERVLETRUNNER: For the jdk1.1 and the Java 2 platform, installation of the Java Servlet Development Kit (JSDK) is need. To use servletrunner, your PATH environment variable points to its directory must be made sure. For the JSDK 2.0 installed with all default options, the location is c:\jsdk2.0\bin on a windows platform. USING JAVA WEB SERVER: Sun Java Web Server (JWS) is a full-featured product. Nice feature is its ability to detect when a servlet has been updates. It detects when new class files have been copied to the appropriate directory and it necessary, automatically reloads any running servlets. Servlets are installed by moving them to the c:\Java Web Server1 The coding step of software development is a process of transition of the detailed design into a programming language that is ultimately transformed into machine executable instructions. This coding depends on the proper selection of the language and coding style of the preliminary design level specified in the design phase. .1\servlets directory. 47 Dept of C.S.E., Narayana Engineering College.,Nellore.
3.3 IMPLEMENTATION Servlet Environment and Role: A servlet is a java component that can be plugged into a javaenabled Web server to provide custom services. These services can include: New Features Runtime changes to content Runtime changes to presentation New standard protocols (such as FTP) New custom protocols Servlets are designed to work within a request/responseprocessing model. In a request/response model, a client sends request message to a server and the server responds by sending back a reply message. Requests can come in the form of an or a custom protocol. HTTP URL FTP URL INSTALLING SERVLETS: Servlets are not run in the same sense as applets and applications. Servlets provide functionality that extends a server. In order to test a servlet, two steps are required: 46 Dept of C.S.E., Narayana Engineering College.,Nellore.
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1. Install the servlet in a hosting server. 2. Request a servlet’s service via a client request. There are many web servers that support servlets. It is beyond the scope of this course to cover the different ways to install servlets in each server. This course examines the JSDK’s servlet runner utility and the JWS. USING SERVLETRUNNER: For the jdk1.1 and the Java 2 platform, installation of the Java Servlet Development Kit (JSDK) is need. To use servletrunner, your PATH environment variable points to its directory must be made sure. For the JSDK 2.0 installed with all default options, the location is c:\jsdk2.0\bin on a windows platform. USING JAVA WEB SERVER: Sun Java Web Server (JWS) is a full-featured product. Nice feature is its ability to detect when a servlet has been updates. It detects when new class files have been copied to the appropriate directory and it necessary, automatically reloads any running servlets. Servlets are installed by moving them to the c:\Java Web Server1 The coding step of software development is a process of transition of the detailed design into a programming language that is ultimately transformed into machine executable instructions. This coding depends on the proper selection of the language and coding style of the preliminary design level specified in the design phase. .1\servlets directory. 47 Dept of C.S.E., Narayana Engineering College.,Nellore.
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