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POException : "No adapter for handler. Does your handler implement a supported interface like controller?"
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  1. POException : "No adapter for handler. Does your handler implement a supported interface like controller?"
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    copied!<p>I'm trying to validate a simple form in JSP with Spring and Hibernate using <a href="http://sourceforge.net/projects/hibernate/files/hibernate-validator/4.0.2.GA/hibernate-validator-4.0.2.GA-dist.zip/download?use_mirror=nchc" rel="nofollow">HibernateValidator</a>. The JSP page Temp.jsp is as follows (the url pttern in web.xml is <code>*.htm</code>).</p> <pre><code>&lt;%@page contentType="text/html" pageEncoding="UTF-8" %&gt; &lt;%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %&gt; &lt;%@taglib uri="http://www.springframework.org/tags/form" prefix="form" %&gt; &lt;form:form method="post" action="Temp.htm" commandName="validationForm"&gt; &lt;!--validationForm is a model class--&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt;User Name:&lt;font color="red"&gt;&lt;form:errors path="userName" /&gt;&lt;/font&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;form:input path="userName" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Age:&lt;font color="red"&gt;&lt;form:errors path="age" /&gt;&lt;/font&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;form:input path="age" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Password:&lt;font color="red"&gt;&lt;form:errors path="password" /&gt;&lt;/font&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;form:password path="password" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;input type="submit" value="Submit" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form:form&gt; </code></pre> <p>The class <code>validationForm</code> is as follows.</p> <pre><code>package validators; import javax.validation.constraints.Max; import javax.validation.constraints.Min; import javax.validation.constraints.NotNull; import javax.validation.constraints.Size; import org.hibernate.validator.constraints.NotEmpty; import org.springframework.format.annotation.NumberFormat; import org.springframework.format.annotation.NumberFormat.Style; final public class ValidationForm { @NotEmpty @Size(min = 1, max = 20) private String userName; @NotNull @NumberFormat(style = Style.NUMBER) @Min(1) @Max(110) private Integer age; @NotEmpty(message = "Password must not be blank.") @Size(min = 1, max = 10, message = "Password must between 1 to 10 Characters.") private String password; public void setUserName(String userName) { this.userName = userName; } public String getUserName() { return userName; } public void setAge(Integer age) { this.age = age; } public Integer getAge() { return age; } public void setPassword(String password) { this.password = password; } public String getPassword() { return password; } } </code></pre> <p>and the <code>Controller</code> class where the validation should be processed is as follows (I'm using <code>SimpleFormController</code>).</p> <pre><code>package controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.validation.BindException; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.SimpleFormController; import usebeans.TempService; import validators.ValidationForm; @SuppressWarnings("deprecation") final public class Temp extends SimpleFormController { private TempService tempService=null; public Temp() { //setCommandClass(Temp.class); //setSuccessView("Temp"); //setFormView("Temp"); setCommandClass(ValidationForm.class); //Still not working. setCommandName("validationForm"); } public void setTempService(TempService tempService) { this.tempService = tempService; } @Override protected ModelAndView onSubmit(HttpServletRequest request, HttpServletResponse response, Object command, BindException errors) throws Exception { ModelAndView mv=new ModelAndView(); ValidationForm validationForm=(ValidationForm) command; tempService.add(validationForm); return mv; } @Override protected ModelAndView showForm(HttpServletRequest request, HttpServletResponse response, BindException errors) throws Exception { ModelAndView mv=new ModelAndView(); return mv; } } </code></pre> <p>In <code>dispatcher-servlet</code>, I have added the following.</p> <pre><code>&lt;bean id="tempService" class="usebeans.TempServiceImpl" /&gt; &lt;bean name="/Temp.htm" class="controller.Temp" p:tempService-ref="tempService" p:formView="Temp" p:successView="Temp" /&gt; </code></pre> <p>Also tried adding the following bean still there is no luck.</p> <pre><code>&lt;bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/&gt; </code></pre> <p>Where the <code>TempService</code> interface is as follows.</p> <pre><code>package usebeans; import validators.ValidationForm; public interface TempService { public void add(ValidationForm validationForm); } </code></pre> <p>and following is the <code>TempServiceImpl</code> class.</p> <pre><code>package usebeans; import validators.ValidationForm; final public class TempServiceImpl implements TempService { public void add(ValidationForm validationForm) { System.out.println("Message"); } } </code></pre> <p>Although the class <code>TempServiceImpl</code> implements the <code>TempService</code> interface, I'm getting the following exception.</p> <pre><code>javax.servlet.ServletException: No adapter for handler [usebeans.TempServiceImpl@ab3cba]: Does your handler implement a supported interface like Controller? at org.springframework.web.servlet.DispatcherServlet.getHandlerAdapter(DispatcherServlet.java:982) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:770) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:716) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549) at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:859) at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:579) at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1555) at java.lang.Thread.run(Thread.java:619) </code></pre> <hr> <p><strong>Edit :</strong></p> <p>Although I'm following what is explained <a href="http://www.vaannila.com/spring/spring-simple-form-controller-1.html" rel="nofollow">here</a>, the problem remains and I'm getting the same exception as mentioned above. What configuration settings am I missing here. It may be in the <code>dispatcher-servlet.xml</code> file. The entire <code>dispatcher-servlet.xml</code> file is as follows.</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"&gt; &lt;bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/&gt; &lt;bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" /&gt; &lt;bean id="tempService" class="usebeans.TempServiceImpl" /&gt; &lt;bean name="/Temp.htm" class="controller.Temp" p:tempService-ref="tempService" p:formView="Temp" p:successView="Temp" /&gt; &lt;bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping"&gt; &lt;property name="mappings"&gt; &lt;props&gt; &lt;prop key="index.htm"&gt;indexController&lt;/prop&gt; &lt;prop key="Temp.htm"&gt;tempService&lt;/prop&gt; &lt;/props&gt; &lt;/property&gt; &lt;/bean&gt; &lt;bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver" p:prefix="/WEB-INF/jsp/" p:suffix=".jsp" /&gt; //The index controller. &lt;bean name="indexController" class="org.springframework.web.servlet.mvc.ParameterizableViewController" p:viewName="index" /&gt; &lt;/beans&gt; </code></pre> <p>I don't have any precise idea about that exception being thrown. Can you figure it out why is that exception being thrown? What configuration settings or something else am I missing here?</p>
 

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