I have a basic SpringBoot app. using Spring Initializer, embedded Tomcat, Thymeleaf template engine, and package as an executable JAR file
I have this domain objects:
@Entity
@Table(name="t_user")
public class User implements Serializable, UserDetails {
@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.LAZY)
private Company company;
public Company getCompany() {
return company;
}
public void setCompany(Company company) {
this.company = company;
}
..
}
and
@Entity
@Table(name="t_company")
public class Company implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
public Company() {
}
/**
* @param companyName
*/
public Company(String companyName) {
super();
this.name = companyName;
}
@NotEmpty
@Length(max = 100)
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
@Override
public String toString() {
return "Company [id=" + id + ", name=" + name + ", timeLapses=" + timeLapses + ", applications=" + applications
+ "]";
}
..
}
But when I retrieve the value of the company name in the Thymeleaf template:
<td class="col_company" th:text="${user.company.name}"></td><!-- COMPANY NAME -->
I got this error:
rg.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "user.company.name" (/nicinc/user/userList:87)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:982)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
Root Cause
But if I put in the template <td class="col_company" th:text="${user.company}"></td>
That's the result:
Company [id=1, name=No En Tenim Ni Cinc SL, timeLapses=[], applications=[]]
under root cause:
org.thymeleaf.exceptions.TemplateProcessingException: Exception evaluating SpringEL expression: "user.company.name" (/nicinc/user/userList:82)
org.thymeleaf.spring4.expression.SpelVariableExpressionEvaluator.evaluate(SpelVariableExpressionEvaluator.java:161)
org.thymeleaf.standard.expression.VariableExpression.executeVariable(VariableExpression.java:154)
org.thymeleaf.standard.expression.SimpleExpression.executeSimple(SimpleExpression.java:59)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:103)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:133)
org.thymeleaf.standard.expression.Expression.execute(Expression.java:120)
org.thymeleaf.standard.processor.attr.AbstractStandardTextChildModifierAttrProcessor.getText(AbstractStandardTextChildModifierAttrProcessor.java:68)
org.thymeleaf.processor.attr.AbstractTextChildModifierAttrProcessor.getModifiedChildren(AbstractTextChildModifierAttrProcessor.java:59)
org.thymeleaf.processor.attr.AbstractChildrenModifierAttrProcessor.processAttribute(AbstractChildrenModifierAttrProcessor.java:59)
org.thymeleaf.processor.attr.AbstractAttrProcessor.doProcess(AbstractAttrProcessor.java:87)
org.thymeleaf.processor.AbstractProcessor.process(AbstractProcessor.java:212)
org.thymeleaf.dom.Node.applyNextProcessor(Node.java:1017)
org.thymeleaf.dom.Node.processNode(Node.java:972)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.NestableNode.computeNextChild(NestableNode.java:695)
org.thymeleaf.dom.NestableNode.doAdditionalProcess(NestableNode.java:668)
org.thymeleaf.dom.Node.processNode(Node.java:990)
org.thymeleaf.dom.Document.process(Document.java:93)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1155)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1060)
org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1011)
org.thymeleaf.spring4.view.ThymeleafView.renderFragment(ThymeleafView.java:335)
org.thymeleaf.spring4.view.ThymeleafView.render(ThymeleafView.java:190)
org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1282)
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1037)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:980)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:317)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:331)
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:214)
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:177)
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262)
org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
Root Cause
Changing to
@OneToOne(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
private Company company;
solved my problem