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POSpring-MVC forms on GAE
 

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    <p>I am trying to create a form using the Spring Framework, but according to this (http://groups.google.com/group/google-appengine-java/ browse_thread/thread/d93fd7385bf85bf7), I need to override initBinder. Well, I think I did that and it still doesn't work. </p> <p>My jsp (priceincreasejsp):</p> <pre><code>&lt;%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" session="false" %&gt; &lt;%@ taglib prefix="form" uri="http://www.springframework.org/tags/ form" %&gt; &lt;form:form method="post" commandName="priceIncrease"&gt; Increase (%): &lt;form:input path="percentage"/&gt; &lt;input type="submit" value="Execute"&gt; &lt;/form:form&gt; </code></pre> <p>myapp-servlet.xml has the following:</p> <pre><code>&lt;bean name="/priceincrease.htm" class="myapp.web.PriceIncreaseFormController"&gt; &lt;property name="sessionForm" value="true"/&gt; &lt;property name="commandName" value="priceIncrease"/&gt; &lt;property name="commandClass" value="myapp.service.PriceIncrease"/ &gt; &lt;property name="validator"&gt; &lt;bean class="myapp.service.PriceIncreaseValidator"/&gt; &lt;/property&gt; &lt;property name="formView" value="priceincrease"/&gt; &lt;property name="successView" value="success.htm"/&gt; &lt;property name="productManager" ref="productManager" /&gt; &lt;/bean&gt; </code></pre> <p>PriceIncrease.java:</p> <pre><code>public class PriceIncrease implements Serializable { private Integer percentage; public void setPercentage(Integer i) { percentage = i; } public Integer getPercentage() { return percentage; } } </code></pre> <p>PriceIncreaseFormController.java:</p> <pre><code>public class PriceIncreaseFormController extends SimpleFormController { private ProductManager productManager; public ModelAndView onSubmit(Object command) throws ServletException { PriceIncrease priceIncrease = (PriceIncrease) command; Integer increase = priceIncrease.getPercentage(); productManager.increasePrice(increase); return new ModelAndView(new RedirectView(getSuccessView())); } public void initBinder(WebDataBinder binder, WebRequest request) { binder.registerCustomEditor(PriceIncrease.class, new PriceIncreaseEditor()); binder.registerCustomEditor(Integer.class, new CustomNumberEditor(Integer.class, true)); // use this instead? } public void setProductManager() {...} public ProductManager getProductManager {...} } </code></pre> <p>Finally, PriceIncreaseEditor.java: (this is probably wrong..)</p> <pre><code>public class PriceIncreaseEditor extends PropertyEditorSupport{ @Override public void setAsText(String text) throws IllegalArgumentException { Integer increase = new Integer(text); super.setValue(increase); } } </code></pre> <p>Stack trace:</p> <pre><code>org.springframework.web.servlet.tags.RequestContextAwareTag doStartTag: access denied (java.lang.RuntimePermission getClassLoader) java.security.AccessControlException: access denied (java.lang.RuntimePermission getClassLoader) at java.security.AccessControlContext.checkPermission(AccessControlContext.java: 355) at java.security.AccessController.checkPermission(AccessController.java: 567) at java.lang.SecurityManager.checkPermission(SecurityManager.java: 549) at com.google.apphosting.runtime.security.CustomSecurityManager.checkPermission(CustomSecurityManager.java: 45) at java.lang.ClassLoader.getSystemClassLoader(ClassLoader.java:1311) at org.springframework.beans.BeanUtils.findEditorByConvention(BeanUtils.java: 368) at org.springframework.validation.AbstractPropertyBindingResult.getCustomEditor(AbstractPropertyBindingResult.java: 110) at org.springframework.validation.AbstractPropertyBindingResult.formatFieldValue(AbstractPropertyBindingResult.java: 87) at org.springframework.validation.AbstractBindingResult.getFieldValue(AbstractBindingResult.java: 230) at org.springframework.web.servlet.support.BindStatus.&lt;init&gt;(BindStatus.java: 120) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java: 172) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java: 192) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java: 158) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.autogenerateId(AbstractDataBoundFormElementTag.java: 145) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java: 136) at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java: 120) at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java: 379) at org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java: 139) at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java: 90) at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java: 77) at org.apache.jsp.WEB_002dINF.jsp.priceincrease_jsp._jspx_meth_form_005finput_005f0(priceincrease_jsp.java: 149) at org.apache.jsp.WEB_002dINF.jsp.priceincrease_jsp._jspService(priceincrease_jsp.java: 82) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 511) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 390) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 418) at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:327) at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126) at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java: 240) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java: 258) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java: 1174) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java: 901) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java: 809) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java: 571) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java: 501) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java: 511) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1166) at com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java: 97) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java: 35) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java: 43) at org.mortbay.jetty.servlet.ServletHandler $CachedChain.doFilter(ServletHandler.java:1157) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java: 388) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java: 216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java: 182) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java: 765) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java: 418) at com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java: 238) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java: 152) at org.mortbay.jetty.Server.handle(Server.java:326) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java: 542) at org.mortbay.jetty.HttpConnection $RequestHandler.headerComplete(HttpConnection.java:923) at com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java: 76) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java: 135) at com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java: 261) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $6.handleBlockingRequest(RuntimePb.java:8495) at com.google.apphosting.base.RuntimePb$EvaluationRuntime $6.handleBlockingRequest(RuntimePb.java:8493) at com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java: 24) at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java: 435) at com.google.net.rpc.impl.Server$RpcTask.runInContext(Server.java: 572) at com.google.tracing.TraceContext$TraceContextRunnable $1.run(TraceContext.java:448) at com.google.tracing.TraceContext.runInContext(TraceContext.java: 688) at com.google.tracing.TraceContext $AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java: 326) at com.google.tracing.TraceContext $AbstractTraceContextCallback.runInInheritedContext(TraceContext.java: 318) at com.google.tracing.TraceContext $TraceContextRunnable.run(TraceContext.java:446) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java: 1110) at java.util.concurrent.ThreadPoolExecutor $Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) </code></pre> <p>I've been pretty stuck for a while now... Any ideas?</p>
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