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My Controller
@Controller
//@RequestMapping("/")
//@ComponentScan("com.spring")
//@EnableAutoConfiguration
public class HomeController {
@Value("${framework.welcomeMessage}")
private String message;
@RequestMapping("/hello")
String home(ModelMap model) {
System.out.println("hittin the controller...");
model.addAttribute("welcomeMessage", "vsdfgfgd");
return "Hello World!";
}
@RequestMapping(value = "/indexPage", method = RequestMethod.GET)
String index(ModelMap model) {
System.out.println("hittin the index controller...");
model.addAttribute("welcomeMessage", message);
return "welcome";
}
@RequestMapping(value = "/indexPageWithModel", method = RequestMethod.GET)
ModelAndView indexModel(ModelMap model) {
System.out.println("hittin the indexPageWithModel controller...");
model.addAttribute("welcomeMessage", message);
return new ModelAndView("welcome", model);
}
}
My JSP (welcome.jsp) inside /WEB-INF/jsp (parent folder is WebContent)
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Welcome to Spring Boot</title>
</head>
<body>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
Message: ${message}
</body>
</html>
My pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>SpringBootPlay</groupId>
<artifactId>SpringBootPlay</artifactId>
<version>0.0.1-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.0.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>com.jcabi</groupId>
<artifactId>jcabi-log</artifactId>
<version>0.17</version>
</dependency>
</dependencies>
<properties>
<java.version>1.8</java.version>
<start-class>com.spring.play.BootLoader</start-class>
<main.basedir>${basedir}/../..</main.basedir>
<m2eclipse.wtp.contextRoot>/</m2eclipse.wtp.contextRoot>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<useSystemClassLoader>false</useSystemClassLoader>
</configuration>
</plugin>
</plugins>
</build>
</project>
My App Initializer
@EnableAutoConfiguration
@SpringBootApplication
@ComponentScan({ "com.spring.controller" })
@PropertySources(value = { @PropertySource("classpath:/application.properties") })
public class BootLoader extends SpringBootServletInitializer {
final static Logger logger = Logger.getLogger(BootLoader.class);
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(BootLoader.class);
}
public static void main(String[] args) {
SpringApplication.run(BootLoader.class, args);
}
}
I even added thymeleaf dependency to my pom. It still didn't work. When ever I hit localhost:8080/hello or /indexPage or /indexPageWithModel it always says
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Sep 21 21:34:18 EDT 2016 There was an unexpected error (type=Not Found, status=404). ]/WEB-INF/jsp/welcome.jsp
My application.properties
spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp
framework.welcomeMessage=Welcome to Dashboard
Please help me. Thanks!
245
This is one of most common error that almost all the spring boot beginners face.
Solution to this is very simple, - your Bootstrap class should know the package or the class path where it should refer in order access the component/controller. Hence you need to specify like :- @ComponentScan(basePackages= {"org.test.controller"})
P.S.- here "org.test.controller" is a qualified name of the package where I have kept my controller.
147
Figured it out myself.
When I converted my dynamic webproject into maven project it did not create the folder structure this way
src/main/java
and
src/main/resources
and
src/main/webapp
I manually created myself and moved the jsp files from WebContent/WEB-INF/jsp to src/main/webapp/WEB-INF/jsp and modified the Java build path in the project properties.
Then I restarted the embedded tomcat and tried it again. It worked.
42
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