Java Web Services Tutorial

Stephanie Bodoff In This Chapter What is a Servlet? The Example Servlets Servlet Life Cycle Sharing Information Initializing a Servlet Writing Service Methods Filtering Requests and Responses Invoking Other Web Resources Accessing the Web Context Maintaining...

A servlet is a Java programming language class used to extend the capabilities of servers that host applications accessed via a request-response programming model. Although...

This chapter uses the Duke's Bookstore application to illustrate the tasks involved in programming servlets. Table lists the servlets that handle each bookstore function. Each...

The life cycle of a servlet is controlled by the container in which the servlet has been deployed. When a request is mapped to a...

Web components, like most objects, usually work with other objects to accomplish their tasks. There are several ways they can do this. They can use...

After the Web container loads and instantiates the servlet class and before it delivers requests from clients, the Web container initializes the servlet. You can...

The service provided by a servlet is implemented in the service method of a GenericServlet, the doMethod methods (where Method can take the value Get, Delete,...

A filter is an object that can transform the header and/or content of a request or response. Filters differ from Web components in that they...

Web components can invoke other Web resources in two ways: indirect and direct. A Web component indirectly invokes another Web resource when it embeds a URL...

The context in which Web components execute is an object that implements the ServletContext interface. You retrieve the Web context with the getServletContext method. The...

Many applications require a series of requests from a client to be associated with one another. For example, the Duke's Bookstore application saves the state...

When a servlet container determines that a servlet should be removed from service (for example, when a container wants to reclaim memory resources, or when...