user-client.apt

关于 RFID 读写器的相关内容

              -------------------
              User Guide Client
              -------------------
              Jonas Haller
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              02.01.2008
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User Guide Reader RP Client


* Contents

  [[1]] {{{#Features}Features}}

  [[2]] {{{#Application}Field of Application}}

  [[3]] {{{#Installing}Installing the Fosstrak RP Client}}

  [[4]] {{{#First}First Steps}}

  [[5]] {{{#Display}Display Notification Messages}}

  [[6]] {{{#Configuration}Simple Reader Configuration}}


* {Features}

  The Fosstrak Reader RP Client is a Java Swing-based graphical user interface
  to execute commands and communicate with a RFID reader that implements the
  EPCglobal Reader Protocol Version 1.1. The Reader Client supports the
  following elements of the protocol:

  * Transport Binding: TCP and HTTP

  * Message Binding: XML and Text

  * Synchronous and Asynchronous Messaging (Notification Channels)

  * Triggers

  * Data Selectors
  
  []

  Additional to the Test Client, there are two versions of an event sink
  contained in the Reader RP Client module. The <<<EventSinkUI>>> displays a
  graphical user interface with a text field to show messages received. The
  <<<EventSink>>> uses the console to output messages received. Mentioning an
  event sink in this user guide will apply to both versions.

  The event sink is started separately and acts as an end point to a
  notification channel of the reader. Notifications received from the reader
  are displayed in the particular output field - text area or console
  respectively.


* Field of {Application}

  * Communicate with a reader via the EPCglobal Reader Protocol Version 1.1
    using a graphical front end to create and send commands.

  * Receive and display notification messages from a reader.

  []

[../images/ReaderClient_architecture.png]


* {Installing} the Fosstrak RP Client

  The following instructions show how to install the Fosstrak Reader RP Client:

  * Download the Reader RP Client binaries with the dependencies included from
    the {{{../download.html}download}} section of the website.

  * Unzip the downloaded file.

  * Make sure a JRE 1.5 or higher is installed and it is added to the path
    variable.


* {First} Steps

  * Start the Reader RP Client instance in one of the following ways:

    * Invoke the executable jar

    * In a console execute

---------------------------------------------------------------------------
java -jar <path-to>/reader-rp-client-<version>.jar
---------------------------------------------------------------------------

    * In a console execute

---------------------------------------------------------------------------
java -cp <path-to>/reader-rp-client-<version>.jar org.fosstrak.reader.rp.client.TestClient
---------------------------------------------------------------------------

    []

  * Enter the IP address and port of a RP compatible reader

  * Select the appropriate transport and message binding

  * Click the "Connect" Button

  * Select a sample command from the drop-down menus (e.g. ReaderDevice.GetName())

  * Generate the message by hitting the "Create Command" button

  * Transmit the command to the reader instance by clicking on the "Send" button

  []

[../images/ReaderTestClientScreenshot.png]


* {Display} Notification Messages

   * Start the class org.fosstrak.reader.rp.client.EventSinkUI in the jar file with the
     following command:

---------------------------------------------------------------------------
java -cp <path-to>/reader-rp-client-<version>.jar org.fosstrak.reader.rp.client.EventSinkUI [port]
---------------------------------------------------------------------------

   * As the port argument use the TCP port to which the reader will be sending
     the notification messages. This port has to be specified later when
     defining the notification channel for the reader. The default port 9999.

   []

[../images/EventSinkUIScreenshot.png]


* Simple Reader {Configuration}

  This section shows an example reader configuration procedure using the Reader
  RP Client.

  The setup consists of an EventSinkUI listening on port 9999 and an Fosstrak
  Reader using the graphical simulator. Both are runnning on the same computer
  as the Reader RP Client. The simulator has a source with the name 'Shelf1'.

  [[1]] Start the Reader, EventSinkUI and Reader RP Client. See the documentation
    of the {{{user-core.html}Reader}}, {{{#Display}EventSinkUI}} and
    {{{#First}Client}} for instructions on how to do this.

  [[2]] Connect to the reader on localhost port 8000 with transport binding HTTP
    and format XML.

  [[3]] Create a read trigger:

    * Select 'Trigger' in the Object drop-down list.

    * Select 'create' in the Command drop-down list.

    * Add a String parameter 'rt' (name), 'TIMER' (type) and 'ms=2000' (timer
      value) to the parameter list.

    * Hit the 'Create Command' button. The command in the Request text field
      should look like this:

+--------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:command xmlns:ns2="urn:epcglobal:rp:xsd:1">
    <id>2</id>
    <targetName></targetName>
    <trigger>
        <create>
            <name>rt</name>
            <triggerType>TIMER</triggerType>
            <triggerValue>ms=2000</triggerValue>
        </create>
    </trigger>
</ns2:command>
+--------------------------------------------------------------------------

    * Hit the 'Send' button. The reply in the Response text field should
      look like this:

+--------------------------------------------------------------------------
HTTP/1.1 200 OK
RP-Receiver-Signature: RPR1
RP-Spec-Version-OK: yes
RP-Request-Content-Type-OK: yes
RP-Response-Content-Type-OK: yes
RP-Response-ACKNAK-OK: yes
Content-Type: text/xml; charset=utf-8
Content-Length: 269

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:reply xmlns:ns2="urn:epcglobal:rp:xsd:1">
    <id>2</id>
    <resultCode>0</resultCode>
    <trigger>
        <create>
            <returnValue>rt</returnValue>
        </create>
    </trigger>
</ns2:reply>
+--------------------------------------------------------------------------

  [[4]] Create a notification trigger:

    * Select 'Trigger' in the Object drop-down list.

    * Select 'create' in the Command drop-down list.

    * Add a String parameter 'nt' (name), 'TIMER' (type) and 'ms=2000' (timer
      value) to the parameter list.

    * Hit the 'Create Command' button. The command in the Request text field
      should look like this:

+--------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:command xmlns:ns2="urn:epcglobal:rp:xsd:1">
    <id>4</id>
    <targetName></targetName>
    <trigger>
        <create>
            <name>nt</name>
            <triggerType>TIMER</triggerType>
            <triggerValue>ms=2000</triggerValue>
        </create>
    </trigger>
</ns2:command>
+--------------------------------------------------------------------------

    * Hit the 'Send' button. The reply in the Response text field without
      the HTTP header should look like this:

+--------------------------------------------------------------------------
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns2:reply xmlns:ns2="urn:epcglobal:rp:xsd:1">