Changes between Version 1 and Version 2 of UTGBCore/RequestDispatcher

Timestamp:

10/04/07 15:07:13 (18 years ago)

Author:

leo

Comment:

UTGBCore/RequestDispatcher

@@ -5 +5 @@
 
 == web.xml setting ==
-Add the following description into you web.xml.
+Add the following description into your web.xml.
   * The lines param-name=base-package, param-value=(application base) specifies the location (base package name) where the RequestDispatcher searches recursively for RequestHandler implementations.
   * With the following setting, an HTTP request, e.g.,  http://localhost:8989/hello.action, is mapped to the request handler org.utgenome.gwt.utgb.server.app.Hello class. The upper letters are converted into the lower letters when mapping the request, e.g., Hello action can be accecced via hello.action URL.
@@ -27 +27 @@
 
 
+=== Automatic Data Binding to Request Handler == 
+
+Hello.java class has serveral parameter values name and year:
+{{{
+
+public class Hello implements RequestHandler
+{
+  private String name = "";
+  private int year = 2000;
+
+  public void handle(HttpServletRequest request, HttpServletResponse response)
+  {
+      PrintWriter out = response.getWriter().println("Hello " + name + "(" + year + ")");
+  }
+
+  public void setName(String name) { this.name = name; }
+  public void setYear(int year) { this.year = year; }
+}
+
+
+}}}
+
+Our RequestDispatcher automatically set these parameter values from a given HTTP request. For example, an HTTP request  http://localhost:8989/hello.action?name=leo&year=2007 will invoke setName("leo") and setYear(2007). 
+
+Note that, although the query string in the HTTP request consists of string values, our BeanUtil library 
+detects the data type to which the string should be translated by reading the class definition (in this example, Hello class).
+ 
+
+