The other solutions didn't help me. If the spring project is imported into Eclipse, the other solutions don't work. When I click on the enter key, after entering the data, the url to the page that should return the result is: http://localhost:8080/getParlamentare4?circoscrizione=Calabria
ParlamentareController.java
//@GetMapping("/cerca_parlamentare_dalla_circoscrizione")
@RequestMapping("/cerca_parlamentare_dalla_circoscrizione")
public ModelAndView getParlamentare4(@RequestParam String circoscrizione)
{
ModelAndView mv = new ModelAndView();
List<Parlamentare> parlamentari =
parlamRepo.findByCircoscrizione(circoscrizione);
System.out.println(parlamRepo.findByCircoscrizione(circoscrizione));
mv.addObject(parlamentari);
mv.setViewName("lista_parlamentari_circoscrizione.jsp");
return mv;
}
If I put the Timeleaf dependency, it doesn't even open the initial index page for me. @RestController e @ResponseBody didn't work, also because @ResponseBody is not for me.
web.xml
<servlet>
<description></description>
<display-name>Cerca_parlamentare_dalla_circoscrizione</display-name>
<servlet-name>Cerca_parlamentare_dalla_circoscrizione</servlet-name>
<servlet-
class>com.giuggiola.controller.Cerca_parlamentare_dalla_circoscrizione</servlet-
class>
</servlet>
<servlet-mapping>
<servlet-name>Cerca_parlamentare_dalla_circoscrizione</servlet-name>
<url-pattern>/cerca_parlamentare_dalla_circoscrizione</url-pattern>
</servlet-mapping>
cerca_parlamentare_dalla_circoscrizione.jsp
<body>
<h2>Ricerca parlamentare in base alla circoscrizione:</h2>
<form action="getParlamentare4"> <!-- action="show_parlamentare3.jsp"getParlamentare4
-->
<table>
<tr>
<td>Circoscrizione:</td>
<td> <input type="text" name="circoscrizione"><br></td>
</tr>
<tr>
<td><input type="submit" value="invio"><br></td>
</tr>
</table>
</form>
</body>
</html>
lista_parlamentari_circoscrizione.jsp
<title>Lista parlamentari di quella circoscrizione</title>
</head>
<body>
<!-- <form action="getParlamentare4"> -->
<c:forEach items="${parlamentari}" var="parlamentare">
<td>Nome:</td>
<td><c:out value="${parlamentare.getPk().getNome()}"/></td>
<br>
</tr>
<tr>
<td>Partito:</td>
<td><c:out value="${pk.partito}"/></td><br>
</tr>
<tr>
<td>Circoscrizione:</td>
<c:forEach items="${pk.getCircoscrizione()}" var="CIRCOSCRIZIONE">
<td><c:out value="${CIRCOSCRIZIONE}"/></td> <br>
</c:forEach>
</tr>
<br>
<tr>
<td>Data di nascita:</td>
<td><c:out value="${parlamentare.data_nascita}"/><br></td>
</tr>
<tr>
<td>Luogo:</td>
<td><c:out value="${parlamentare.luogo}"/><br></td>
</tr>
<tr>
<td>Titolo di studi:</td>
<td><c:out value="${parlamentare.titolo_studi}"/><br></td>
</tr>
<tr>
<td>Mandati:</td><br>
<c:forEach items="${parlamentare.mandati}" var="mandato">
<table>
<tr>
<td>Mandato:</td>
<td><c:out value="${mandato}"/></td><br>
</tr>
</table>
</c:forEach>
</tr>
<tr>
<td>Commissioni:</td>
<c:forEach items="${parlamentare.commissioni}" var="commissione">
<table>
<tr>
<td>Commissione:</td>
<td><c:out value="${commissione}"/></td><br>
</tr>
</table>
</c:forEach>
</c:forEach>
<!-- ${parlamentari} -->
</body>
</html>
STACKTRACE:
2022-10-10 16:21:42.171 DEBUG 5128 --- [nio-8080-exec-6]
o.s.web.servlet.DispatcherServlet : "ERROR" dispatch for GET "/error?
circoscrizione=Calabria", parameters={masked}
2022-10-10 16:21:42.172 DEBUG 5128 --- [nio-8080-exec-6]
s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped to
org.springframework.boot.autoconfigure.web.servlet.error.
BasicErrorController#errorHtml(HttpServletRequest, HttpServletResponse)
2022-10-10 16:21:42.205 DEBUG 5128 --- [nio-8080-exec-6]
o.s.w.s.v.ContentNegotiatingViewResolver : Selected 'text/html' given [text/html,
text/html;q=0.8]
2022-10-10 16:21:42.205 DEBUG 5128 --- [nio-8080-exec-6]
o.s.web.servlet.view.JstlView : View name 'error', model {timestamp=Mon
Oct 10 16:21:42 CEST 2022, status=404, error=Not Found, message=No message available,
path=/getParlamentare4}
2022-10-10 16:21:42.222 DEBUG 5128 --- [nio-8080-exec-6]
o.s.web.servlet.DispatcherServlet : Error rendering view
[org.springframework.web.servlet.view.JstlView: name 'error'; URL [error]]
javax.servlet.ServletException: Circular view path [error]: would dispatch back to
the current handler URL [/error] again. Check your ViewResolver setup! (Hint: This
may be the result of an unspecified view, due to default view name generation.)
at
org.springframework.web.servlet.view.InternalResourceView.
prepareForRendering(InternalResourceView.java:210) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.view.InternalResourceView.
renderMergedOutputModel(InternalResourceView.java:148) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.view.AbstractView.render
(AbstractView.java:316) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.DispatcherServlet.render
(DispatcherServlet.java:1405) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.DispatcherServlet.processDispatchResult
(DispatcherServlet.java:1149) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.DispatcherServlet.doDispatch
(DispatcherServlet.java:1088) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.DispatcherServlet.doService
(DispatcherServlet.java:964) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.FrameworkServlet.processRequest
(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.23.jar:5.3.23]
at org.springframework.web.servlet.FrameworkServlet.doGet
(FrameworkServlet.java:898) ~[spring-webmvc-5.3.23.jar:5.3.23]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.65.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service
(FrameworkServlet.java:883) ~[spring-webmvc-5.3.23.jar:5.3.23]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
~[tomcat-embed-core-9.0.65.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal
(RequestContextFilter.java:100) ~[spring-web-5.3.23.jar:5.3.23]
at org.springframework.web.filter.OncePerRequestFilter.doFilter
(OncePerRequestFilter.java:117) ~[spring-web-5.3.23.jar:5.3.23]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.web.filter.OncePerRequestFilter.doFilter
(OncePerRequestFilter.java:102) ~[spring-web-5.3.23.jar:5.3.23]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.web.filter.OncePerRequestFilter.doFilter
(OncePerRequestFilter.java:102) ~[spring-web-5.3.23.jar:5.3.23]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter
(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationDispatcher.invoke
(ApplicationDispatcher.java:711) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationDispatcher.processRequest
(ApplicationDispatcher.java:461) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationDispatcher.doForward
(ApplicationDispatcher.java:385) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationDispatcher.forward
(ApplicationDispatcher.java:313) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardHostValve.custom
(StandardHostValve.java:403) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardHostValve.status
(StandardHostValve.java:249) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardHostValve.invoke
(StandardHostValve.java:171) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.valves.ErrorReportValve.invoke
(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardEngineValve.invoke
(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.connector.CoyoteAdapter.service
(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.http11.Http11Processor.service
(Http11Processor.java:399) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.AbstractProcessorLight.process
(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process
(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun
(NioEndpoint.java:1789) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.SocketProcessorBase.run
(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker
(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run
(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run
(TaskThread.java:61) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
ParlamentareRepository.java
@Query(value="select nome from Parlamentari where
circoscrizione=?1 order by nome",nativeQuery = true)
public List<Parlamentare> findByCircoscrizione(String
circoscrizione);
Thanks to who helps me.
I added the file:
WebConfig.java
@EnableWebMvc
@Configuration
@ComponentScan("com.giuggiola.controller")
public class WebConfig implements WebMvcConfigurer {
// All web configuration will go here
@Bean
public ViewResolver internalResourceViewResolver() {
InternalResourceViewResolver bean = new
InternalResourceViewResolver();
bean.setViewClass(JstlView.class);
bean.setPrefix("/webapp/");
bean.setSuffix(".jsp");
return bean;
}
@Bean
public BeanNameViewResolver beanNameViewResolver(){
return new BeanNameViewResolver();
}
@Bean
public View lista_parlamentari_circoscrizione() { //JstlView
return new
JstlView("/webapp/lista_parlamentari_circoscrizione.jsp");
}
I edited web.xml with
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
on the page cerca_parlamentare_dalla_circoscrizione.jsp
<form action="/Parlamento/lista_parlamentari_circoscrizione">
because it is the secondary page where you see the result inserted in the page cerca_parlamentare_dalla_circoscrizione.jsp
ParlamentareController.java
@GetMapping("cerca_parlamentare_dalla_circoscrizione")
//@GetMapping("/lista_parlamentari_circoscrizione")
//@RequestMapping("/cerca_parlamentare_dalla_circoscrizione")
public String
getParlamentare4(@RequestParam(value="circoscrizione[]")
String[] circoscrizione)
{//public String
controllerMethod(@RequestParam(value="myParam[]") String[]
myParams){
ModelAndView mv = new ModelAndView();
List<Parlamentare> parlamentari =
parlamRepo.findByCircoscrizione(circoscrizione);
System.out.println(parlamRepo.findByCircoscrizione
(circoscrizione));
mv.addObject(parlamentari);
mv.setViewName("lista_parlamentari_circoscrizione.jsp");
return "lista_parlamentari_circoscrizione";
//mv;
}
I have tried all the combinations in the getMapping
/Parlamento/lista_parlamentari_circoscrizione
/lista_parlamentari_circoscrizione
/Parlamento/cerca_parlamentare_dalla_circoscrizione
/cerca_parlamentare_dalla_circoscrizione
STACKTRACE:
2022-10-12 11:31:41.074 DEBUG 1696 --- [nio-8080-exec-1]
o.s.web.servlet.DispatcherServlet : Error rendering
view [org.springframework.web.servlet.view.JstlView: name
'error'; URL [error]]
javax.servlet.ServletException: Circular view path [error]:
would dispatch back to the current handler URL
[/Parlamento/error] again. Check your ViewResolver setup!
(Hint: This may be the result of an unspecified view, due to
default view name generation.)
