📄 index.xtp

📁 RESIN 3.2 最新源码
💻 XTP
字号:
<document>  <header>    <product>resin</product>    <title>Hessian Service</title>    <description>      <p>Writing a Hessian service as a plain-old Java object (POJO)eliminates protocol dependencies and simplifies service testing.</p>    </description>    <type>tutorial</type>    <tutorial-startpage>demo.jsp</tutorial-startpage>  </header>  <body>    <summary/><s1 title="Files in this tutorial"><deftable><tr><td><viewfile-link file="WEB-INF/classes/example/LogService.java"/>    </td><td>Interface for the logging service.</td></tr><tr><td><viewfile-link file="WEB-INF/classes/example/LogServiceImpl.java"/>    </td><td>The main service implementation.</td></tr><tr><td><viewfile-link file="WEB-INF/web.xml"/>    </td><td>Configures the environment</td></tr><tr><td><viewfile-link file="demo.jsp"/>    </td><td>Client JSP</td></tr></deftable></s1><s1 title="Service Implementation"><p>The HelloService implementation is just a Java class that implementsthe HelloService API.  This service responds by placing the results ofthe request on a JMS queue.</p><example title="LogService.java" language="java">package example;public interface LogService {  public void log(String message);  public String getLog();}</example><example title="LogServiceImpl.java" language="java">package example;public class LogServiceImpl implements LogService {  private int _sequenceNumber = 1;  private StringBuilder _log = new StringBuilder();  public void log(String message)  {    _log.append(_sequenceNumber + ": " + message + "\n");    _sequenceNumber++;  }  public String getLog()  {    return _log.toString();  }}</example><p>The configuration for this example is the following:</p><example title="web.xml" language="xml">&lt;web-app xmlns="http://caucho.com/ns/resin">  &lt;resource var="logService"            jndi-name="example/LogService"            type="example.LogServiceImpl" />  &lt;resource var="serviceQueue"             jndi-name="jms/ServiceQueue"            type="com.caucho.jms.memory.MemoryQueue" />    &lt;resource var="jmsFactory"            jndi-name="jms/ConnectionFactory"            type="com.caucho.jms.ConnectionFactoryImpl" />  &lt;resource type="com.caucho.hessian.server.HessianListener">    &lt;init>      &lt;connection-factory>${jmsFactory}&lt;/connection-factory>      &lt;destination>${serviceQueue}&lt;/destination>      &lt;service>${logService}&lt;/service>    &lt;/init>  &lt;/resource>&lt;/web-app></example><p>Finally, the service is called from a JSP page:</p><example title="demo.jsp">&lt;%@ page import="javax.naming.Context" %>&lt;%@ page import="javax.naming.InitialContext" %>&lt;%@ page import="com.caucho.hessian.client.HessianProxyFactory" %>&lt;%@ page import="example.LogService" %>&lt;%// Check the logContext context = (Context) new InitialContext().lookup("java:comp/env");LogService logService = (LogService) context.lookup("example/LogService");out.println("<a href=\"\">Refresh</a><br/>");out.println("Logged messages:&lt;br/>");out.println("&lt;pre>");out.println(logService.getLog());out.println("&lt;/pre>");// Make a requestHessianProxyFactory factory = new HessianProxyFactory();String url = "jms:jms/ServiceQueue";LogService log = (LogService) factory.create(LogService.class, url);log.log("Hello, World");%></example><p><a href="demo.jsp">Try the example</a></p></s1>  </body></document>
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -