java. Lang. IllegalStateException: neither bindingresult nor the common target object of bean name ‘category’ can be used as the request property
•
Java
I checked almost all the answers related to this question on the Internet, but I couldn't find the problem in my code
This is my JSP page
<form:form method="POST" commandName="category" modelattribute="category" action="search_category">
<form:input path="category_name" />
<input type="submit" value="Submit">
</form:form>
When I delete
<form:input path="category_name" />
It works normally I can communicate with my controller So the problem is related to this line
@Controller
public class SearchCategory {
@Autowired
private CategoryService categoryService;
@RequestMapping(value = "/search_category",method = RequestMethod.POST)
public @ResponseBody String searchCategoryFromDatabase(@modelattribute("category") Category category,BindingResult result){
return "something";
}
}
This is my web xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- The deFinition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>
<filter>
<filter-name>hibernateFilter</filter-name>
<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>hibernateFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
This is my servlet context xml
<!-- Set the default page as index.jsp -->
<mvc:view-controller path="/" view-name="index"/>
<!-- Map resources -->
<mvc:resources mapping="/resources/**" location="/,classpath:/Meta-INF/web-resources/" />
<!-- Map simple view name such as "test" into /WEB-INF/views/test.jsp -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/" />
<property name="suffix" value=".jsp" />
</bean>
And my ApplicationContext xml
<!-- Enable @Controller annotation support -->
<mvc:annotation-driven />
<context:annotation-config/>
<!-- Set the default page as index.jsp -->
<mvc:view-controller path="/" view-name="index"/>
<!-- Map resources -->
<mvc:resources mapping="/resources/**" location="/,classpath:/Meta-INF/web-resources/" />
<!-- Map simple view name such as "test" into /WEB-INF/views/test.jsp -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/" />
<property name="suffix" value=".jsp" />
</bean>
<!-- Scan classpath for annotations (eg: @Service,@Repository etc) -->
<context:component-scan base-package="com.XXXX"/>
<!-- JDBC Data Source. It is assumed you have MysqL running on localhost port 3306 with
username root and blank password. Change below if it's not the case -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="com.MysqL.jdbc.Driver"/>
<property name="url" value="jdbc:MysqL://localhost:3306/XXXX"/>
<property name="username" value="XXXX"/>
<property name="password" value="XXXX"/>
<property name="validationQuery" value="SELECT 1"/>
</bean>
<!-- Hibernate Session Factory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionfactorybean">
<property name="dataSource" ref="dataSource"/>
<property name="configLocation">
<value>classpath:hibernate.cfg.xml</value>
</property>
<property name="packagesToScan">
<array>
<value>com.XXXX</value>
</array>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MysqLDialect
</value>
</property>
</bean>
<!-- Hibernate Transaction Manager -->
<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- Activates annotation based transaction management -->
<tx:annotation-driven transaction-manager="transactionManager"/>
I may have made a mistake in my XML file I am a novice this spring - hibernate employees are waiting for your help thank you..
This is the exception thrown
Stacktrace:] with root cause
java.lang.IllegalStateException: Neither BindingResult nor plain target object for bean name 'category' available as request attribute
at org.springframework.web.servlet.support.BindStatus.<init>(BindStatus.java:141)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getBindStatus(AbstractDataBoundFormElementTag.java:168)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getPropertyPath(AbstractDataBoundFormElementTag.java:188)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.getName(AbstractDataBoundFormElementTag.java:154)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.autogenerateId(AbstractDataBoundFormElementTag.java:141)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.resolveId(AbstractDataBoundFormElementTag.java:132)
at org.springframework.web.servlet.tags.form.AbstractDataBoundFormElementTag.writeDefaultAttributes(AbstractDataBoundFormElementTag.java:116)
at org.springframework.web.servlet.tags.form.AbstractHtmlElementTag.writeDefaultAttributes(AbstractHtmlElementTag.java:422)
at org.springframework.web.servlet.tags.form.InputTag.writeTagContent(InputTag.java:142)
at org.springframework.web.servlet.tags.form.AbstractFormTag.doStartTagInternal(AbstractFormTag.java:84)
at org.springframework.web.servlet.tags.RequestContextAwareTag.doStartTag(RequestContextAwareTag.java:80)
at org.apache.jsp.index_jsp._jspx_meth_form_005finput_005f0(index_jsp.java:208)
at org.apache.jsp.index_jsp._jspx_meth_form_005fform_005f0(index_jsp.java:168)
at org.apache.jsp.index_jsp._jspService(index_jsp.java:100)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.springframework.orm.hibernate4.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:149)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:722)
Solution
If you enter index.com through something like http: / / localhost: 8080 / yourap JSP, I'll assume you have a < welcome File > for it
This means index JSP generates HTML without spring preprocessing You're trying to render this
<form:form method="POST" commandName="category" modelattribute="category" action="search_category">
<form:input path="category_name" />
<input type="submit" value="Submit">
</form:form>
Where < form: Form > comes from the tag library of spring First, notice that you use both commandname and modelattribute This is superfluous Use one instead of two Second, when you specify either one, the tag implementation looks for the HttpServletRequest property with the specified name In your case, no such attribute is added to the HttpServletRequest attribute This is because the servlet container forwards directly to index jsp.
Instead of doing so, create a new @ controller handler method that will add properties to the model and forward them to index JSP view
@RequestMapping(value = "/",method = RequestMethod.GET)
public String welcomePage(Model model) {
model.addAttribute("category",new Category()); // the Category object is used as a template to generate the form
return "index";
}
You can get rid of this
<!-- Set the default page as index.jsp --> <mvc:view-controller path="/" view-name="index"/>
In addition, remove any MVC configuration from ApplicationContext Move the XML file to servlet context XML file This is where it belongs Here’s why.
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