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[Openutils-svn] SF.net SVN: openutils: [340] trunk/openutils-spring
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From: <mol...@us...> - 2007-06-15 15:50:13
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Revision: 340
http://svn.sourceforge.net/openutils/?rev=340&view=rev
Author: molaschi
Date: 2007-06-15 08:50:14 -0700 (Fri, 15 Jun 2007)
Log Message:
-----------
spring exporter for enabling bean to be called by http request and to return results in JSON protocol
Modified Paths:
--------------
trunk/openutils-spring/pom.xml
Added Paths:
-----------
trunk/openutils-spring/src/main/java/it/openutils/spring/remoting/
trunk/openutils-spring/src/main/java/it/openutils/spring/remoting/exporters/
trunk/openutils-spring/src/main/java/it/openutils/spring/remoting/exporters/JSONServiceExporter.java
Modified: trunk/openutils-spring/pom.xml
===================================================================
--- trunk/openutils-spring/pom.xml 2007-06-14 09:02:24 UTC (rev 339)
+++ trunk/openutils-spring/pom.xml 2007-06-15 15:50:14 UTC (rev 340)
@@ -1,4 +1,5 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>net.sourceforge.openutils</groupId>
@@ -44,6 +45,17 @@
</exclusions>
</dependency>
<dependency>
+ <groupId>org.springframework</groupId>
+ <artifactId>spring-remoting</artifactId>
+ <version>2.0.1</version>
+ </dependency>
+ <dependency>
+ <groupId>net.sf.json-lib</groupId>
+ <artifactId>json-lib</artifactId>
+ <version>1.1</version>
+ <classifier>jdk15</classifier>
+ </dependency>
+ <dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.3</version>
Added: trunk/openutils-spring/src/main/java/it/openutils/spring/remoting/exporters/JSONServiceExporter.java
===================================================================
--- trunk/openutils-spring/src/main/java/it/openutils/spring/remoting/exporters/JSONServiceExporter.java (rev 0)
+++ trunk/openutils-spring/src/main/java/it/openutils/spring/remoting/exporters/JSONServiceExporter.java 2007-06-15 15:50:14 UTC (rev 340)
@@ -0,0 +1,112 @@
+package it.openutils.spring.remoting.exporters;
+
+import java.lang.reflect.Method;
+import java.lang.reflect.TypeVariable;
+import java.util.Enumeration;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import net.sf.json.JSONObject;
+
+import org.apache.commons.beanutils.ConvertUtils;
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang.math.NumberUtils;
+import org.springframework.beans.factory.InitializingBean;
+import org.springframework.remoting.support.RemoteInvocation;
+import org.springframework.remoting.support.RemoteInvocationBasedExporter;
+import org.springframework.remoting.support.RemoteInvocationResult;
+import org.springframework.web.servlet.ModelAndView;
+import org.springframework.web.servlet.mvc.Controller;
+
+
+/**
+ * @author mmolaschi
+ * @version $Id: $
+ */
+public class JSONServiceExporter extends RemoteInvocationBasedExporter implements Controller
+{
+ private static final String METHOD = "__method__";
+
+ private static final String PARAM_PREFIX = "param";
+
+ private static final String CONTENT_TYPE = "text/x-json";
+
+ /**
+ * {@inheritDoc}
+ */
+ public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception
+ {
+ if (request.getParameter(METHOD) != null)
+ {
+ String methodRequest = request.getParameter(METHOD);
+ Method[] methods = this.getServiceInterface().getMethods();
+ for (Method method : methods)
+ {
+ if (method.getName().equals(methodRequest))
+ {
+ Class[] types = method.getParameterTypes();
+ Object[] values = new Object[types.length];
+ if (values.length > 0)
+ {
+ int i = 0;
+ Enumeration<String> names = request.getParameterNames();
+ while (names.hasMoreElements())
+ {
+ String name = names.nextElement();
+ if (name != null && name.startsWith(PARAM_PREFIX))
+ {
+ String posStr = StringUtils.substringAfter(name, PARAM_PREFIX);
+ int pos = NumberUtils.toInt(posStr);
+
+ String[] reqValues = request.getParameterValues(name);
+ if (reqValues != null && reqValues.length > 0)
+ {
+ if (types[pos].isArray())
+ {
+ values[pos] = ConvertUtils.convert(reqValues, types[pos]);
+ }
+ else
+ {
+ values[pos] = ConvertUtils.convert(reqValues[0], types[pos]);
+ }
+ }
+ else
+ {
+ values[pos] = null;
+ }
+
+ }
+ }
+ }
+
+ RemoteInvocation invocation = new RemoteInvocation();
+ invocation.setArguments(values);
+ invocation.setParameterTypes(types);
+ invocation.setMethodName(methodRequest);
+
+ RemoteInvocationResult result = invokeAndCreateResult(invocation, this.getProxyForService());
+
+ JSONObject obj = null;
+ if (result.hasException())
+ {
+ obj = JSONObject.fromBean(result.getException());
+ obj.put("exception", true);
+ }
+ else
+ {
+ obj = JSONObject.fromBean(result.getValue());
+ obj.put("exception", false);
+ }
+
+ response.setContentType(CONTENT_TYPE);
+ obj.write(response.getWriter());
+
+ break;
+ }
+ }
+
+ }
+ return null;
+ }
+}
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