Spring boot not able to recognize JSP - spring

Question

I have configured Spring Boot using annotations.
I have the following files
1)AppStarter class for configuring spring boot
#Configuration
#EnableAutoConfiguration
#PropertySource(value = "classpath:app.properties", ignoreResourceNotFound = true)
#ComponentScan(basePackages = "com.sample.config")
public class AppStarter extends SpringBootServletInitializer{
#Value("${server.contextPath}")
private String contextPath;
#Value("${server.port:8080}")
private String port;
#Bean
public static PropertySourcesPlaceholderConfigurer propertyPlaceholderConfigurer() {
return new PropertySourcesPlaceholderConfigurer();
}
#Bean
public EmbeddedServletContainerFactory servletContainer() {
TomcatEmbeddedServletContainerFactory factory = new TomcatEmbeddedServletContainerFactory();
factory.setPort(Integer.valueOf(port));
factory.setContextPath(contextPath);
factory.addErrorPages(new ErrorPage(HttpStatus.NOT_FOUND, "/notfound.html"));
return factory;
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(AppStarter.class);
}
public static void main(String[] args) {
SpringApplication.run(AppStarter.class, args);
}
}
2)WebConfig class
#Configuration
#ComponentScan(basePackages = {"com.sample.rest"})
#EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter
{
#Bean
public static PropertySourcesPlaceholderConfigurer properties()
{
PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
Resource[] resources = new ClassPathResource[]{new ClassPathResource("app.properties")};
configurer.setLocations(resources);
configurer.setIgnoreUnresolvablePlaceholders(true);
return configurer;
}
#Bean
public InternalResourceViewResolver viewResolver()
{
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setPrefix("/WEB-INF/pages/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
}
3)app.properties
core_pool_size = 100
max_pool_size = 600
queue_capacity = 160
server.port=8080
spring.view.prefix: /WEB-INF/pages/
spring.view.suffix: .jsp
4)UserController class
#Controller
public class UserController extends AbstractController {
#RequestMapping(value = "/user/add")
public String user()
{
return "adduser";
}
}
5)pom.xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>1.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>1.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>4.1.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.hateoas</groupId>
<artifactId>spring-hateoas</artifactId>
<version>0.16.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-websocket</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-messaging</artifactId>
</dependency>
<dependency>
<groupId>net.sf.dozer</groupId>
<artifactId>dozer</artifactId>
<version>5.5.1</version>
<exclusions>
<exclusion>
<artifactId>commons-logging</artifactId>
<groupId>commons-logging</groupId>
</exclusion>
<exclusion>
<artifactId>org.slf4j</artifactId>
<groupId>slf4j-log4j12</groupId>
</exclusion>
<exclusion>
<artifactId>log4j</artifactId>
<groupId>log4j</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<scope>provided</scope>
</dependency>
<!--Spring boot test-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>1.2.0.RELEASE</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-jpamodelgen</artifactId>
<version>4.3.7.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql-connector-java.version}</version>
<scope>runtime</scope>
</dependency>
</dependencies>
6)adduser.jsp which is in webapp/WEB_INF/pages folder
When I try to access my jsp through localhost:8080/sample/user/add i get :
org.springframework.web.servlet.PageNotFound | No mapping found for HTTP request with URI [/sample/WEB-INF/pages/adduser.jsp] in DispatcherServlet with name 'dispatcherServlet'
Can anyone could provide any help on this issue?

Answer 1

You configured: spring.view.prefix: /WEB-INF/jsp/
But your folder is: webapp/WEB_INF/pages
/jsp vs, /pages
You need to change one of them, so that they match!
Second: you need to request the url (That is written at your controller but not the path of the jsp!
So use:
localhost:8080/<yourAppName>/user/add instead of /sample/WEB-INF/pages/adduser.jsp

Answer 2

to use localhost:8080/samples/user/add, you would need to change the controller code to this,
#Controller
#RequestMapping("/samples")
public class UserController extends AbstractController {
#RequestMapping(value = "/user/add")
public String user()
{
return "adduser";
}
}

Answer 3

It looks like you have an embedded Tomcat container configured. JSP pages are not supported when Tomcat is embedded. http://docs.spring.io/spring-boot/docs/1.2.1.RELEASE/reference/htmlsingle/#boot-features-jsp-limitations

Answer 4

Try this:
#Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}