Olá pessoal! Não consigo corrigir um problema que ocorre ao tentar salvar uma informação. Tenho outro projeto que funciona e mesmo tentando comparar um com o outro, não descobri qual é o problema.
A mensagem de erro que aparece é a seguinte:
Failed to convert from type [java.lang.String] to type [java.lang.Long] for value 'Cris'; nested exception is java.lang.NumberFormatException: For input string: "Cris"
O código completo está no github: (GitHub - IvoLeonardo/Agenda: Projeto que continha erro, mas que foi corrigido.)
Grato.
Abaixo segue um pouco dos códigos.
package br.com.ilsc.agenda.modelo;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "contatos")
public class Contato {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String contato;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getContato() {
return contato;
}
public void setContato(String contato) {
this.contato = contato;
}
}
package br.com.ilsc.agenda.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.servlet.ModelAndView;
import br.com.ilsc.agenda.modelo.Contato;
import br.com.ilsc.agenda.repository.ContatoRepository;
@Controller
public class IndexController {
@Autowired
private ContatoRepository contatoRepository;
@GetMapping("/")
public ModelAndView inicio() {
ModelAndView mv = new ModelAndView("index");
mv.addObject("contatoObj", new Contato());
mv.addObject("contatos", contatoRepository.findAll());
return mv;
}
@PostMapping("salvarContato")
public ModelAndView salvar(Contato contato) {
contatoRepository.save(contato);
ModelAndView mv = new ModelAndView("index");
mv.addObject("contatoObj", new Contato());
mv.addObject("contatos", contatoRepository.findAll());
return mv;
}
}
<!DOCTYPE html>
<html lang="pt-br">
<head>
<meta charset="utf-8">
<title>Index</title>
</head>
<body>
<form action="salvarContato" method="post" th:object="${contatoObj}">
<input type="hidden" name="id" th:field="*{id}">
<label>Nome</label>
<input type="text" name="contato" th:field="*{contato}">
<input type="submit" value="salvar">
</form>
<table>
<tr>
<th>Código</th><th>Nome do contato</th>
</tr>
<tr th:each="c : ${contatos}">
<td th:text="${c.id}"></td>
<td th:text="${c.contato}"></td>
</tr>
</table>
</body>
</html>
package br.com.ilsc.agenda.repository;
import org.springframework.data.jpa.repository.JpaRepository;
import br.com.ilsc.agenda.modelo.Contato;
public interface ContatoRepository extends JpaRepository<Contato, Long> {
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.4.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>br.com.ilsc</groupId>
<artifactId>agenda</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>agenda</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Posta o StackTrace completo
Olá, staroski.
Grato pelo contato.
Segue o erro completo:
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Fri Jun 11 15:11:20 AMT 2021
There was an unexpected error (type=Bad Request, status=400).
Failed to convert value of type 'java.lang.String' to required type 'br.com.ilsc.agenda.modelo.Contato'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.lang.Long] for value 'Cris'; nested exception is java.lang.NumberFormatException: For input string: "Cris"
org.springframework.beans.TypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'br.com.ilsc.agenda.modelo.Contato'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.lang.Long] for value 'Cris'; nested exception is java.lang.NumberFormatException: For input string: "Cris"
at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:79)
at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:53)
at org.springframework.validation.DataBinder.convertIfNecessary(DataBinder.java:696)
at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttributeFromRequestValue(ServletModelAttributeMethodProcessor.java:142)
at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:78)
at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:142)
at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)
at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:170)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1060)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:962)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:832)
Caused by: org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.lang.Long] for value 'Cris'; nested exception is java.lang.NumberFormatException: For input string: "Cris"
at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:47)
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:192)
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:175)
at org.springframework.data.repository.support.DomainClassConverter$ToEntityConverter.convert(DomainClassConverter.java:177)
at org.springframework.data.repository.support.DomainClassConverter.lambda$convert$0(DomainClassConverter.java:85)
at java.base/java.util.Optional.map(Optional.java:258)
at org.springframework.data.repository.support.DomainClassConverter.convert(DomainClassConverter.java:85)
at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:41)
at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:192)
at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:129)
at org.springframework.beans.TypeConverterSupport.convertIfNecessary(TypeConverterSupport.java:73)
... 52 more
Caused by: java.lang.NumberFormatException: For input string: "Cris"
at java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:68)
at java.base/java.lang.Long.parseLong(Long.java:707)
at java.base/java.lang.Long.valueOf(Long.java:1159)
at org.springframework.util.NumberUtils.parseNumber(NumberUtils.java:214)
at org.springframework.core.convert.support.StringToNumberConverterFactory$StringToNumber.convert(StringToNumberConverterFactory.java:64)
at org.springframework.core.convert.support.StringToNumberConverterFactory$StringToNumber.convert(StringToNumberConverterFactory.java:50)
at org.springframework.core.convert.support.GenericConversionService$ConverterFactoryAdapter.convert(GenericConversionService.java:437)
at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:41)
... 62 more
Tente colocar a anotação @ModelAttribute no parâmetro do método salvar:
public ModelAndView salvar(@ModelAttribute Contato contato) {
Olá, @Lucas_Camara!
Grato por contribuir.
eu acrescentei a anotação
@ModelAttribute, porém não funcionou. O mesmo erro continua.
Olá, @Lucas_Camara! Agradeço por contribuir com o link. Vou pesquisar com calma.
Como eu disse no início, eu tenho um outro projeto que funciona. Comparei os códigos dos dois e não encontrei o erro.
Eu ainda estou nas fases iniciais de aprendizado com Spring.
Inseri os arquivos com códigos do projeto que funciona ao projeto que apresenta erro, e advinha: agora no mesmo projeto a parte antiga não funciona e o que acrescentei funciona e ainda não sei onde está a falha. Parece que fiz tudo certo, mas eu sei que não.
O @staroski pediu que eu postasse o erro completo e já está postado acima.
No navegador apresenta o erro 400:
There was an unexpected error (type=Bad Request, status=400).
E as excessões:
org.springframework.beans.TypeMismatchException,
Caused by: org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.lang.Long] for value ‘Cris’; nested exception is java.lang.NumberFormatException: For input string: “Cris”,
Caused by: java.lang.NumberFormatException: For input string: “Cris”
Estou fazendo pesquisas para resolver isso.
Se alguém puder me ajudar eu agradeço.
Olá @Lucas_Camara e @staroski resolvi o problema. Ufa!
Na classe Contato havia um atributo de classe do tipo String e com o mesmo nome da classe: contato. Alterei o nome do atributo para nomeContato e funcionou.
Agradeço pela colaboração de vocês.
1 curtida