[FIXED] This application has no explicit mapping for /error, so you are seeing this as a fallback. - Spring boot- jsp

Issue

I am new to spring boot trying to build a web application using JSP with spring boot, getting the fallback error I have given the path exactly.

please refer the below link. where I created the WEb_INF and path href="https://drive.google.com/file/d/1-qkoy49zIZe-Y6-zPeAn9g2aRGaDHt01/view?usp=sharing" rel="nofollow noreferrer">https://drive.google.com/file/d/1-qkoy49zIZe-Y6-zPeAn9g2aRGaDHt01/view?usp=sharing

CustomerContoller.java

package com.javabrains.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/customer")
public class CustomerController {

    public String hello(ModelMap Model) {
        return "list";
    }
}

application.properties

spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp

porn.xml

<?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>2.1.8.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.javabrains</groupId>
    <artifactId>javabrains</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>WebDemo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <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>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web-services</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</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>

Stack trace

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.1.8.RELEASE)

2019-09-08 11:32:00.571  INFO 6484 --- [  restartedMain] com.javabrains.WebDemoApplication        : Starting WebDemoApplication on NagaTeja with PID 6484 (C:\Users\nagat\workspace1\WebDemo\target\classes started by nagat in C:\Users\nagat\workspace1\WebDemo)
2019-09-08 11:32:00.575  INFO 6484 --- [  restartedMain] com.javabrains.WebDemoApplication        : No active profile set, falling back to default profiles: default
2019-09-08 11:32:00.626  INFO 6484 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : Devtools property defaults active! Set 'spring.devtools.add-properties' to 'false' to disable
2019-09-08 11:32:00.626  INFO 6484 --- [  restartedMain] .e.DevToolsPropertyDefaultsPostProcessor : For additional web related logging consider setting the 'logging.level.web' property to 'DEBUG'
2019-09-08 11:32:01.644  INFO 6484 --- [  restartedMain] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.ws.config.annotation.DelegatingWsConfiguration' of type [org.springframework.ws.config.annotation.DelegatingWsConfiguration$$EnhancerBySpringCGLIB$$b5bc3870] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2019-09-08 11:32:01.699  INFO 6484 --- [  restartedMain] .w.s.a.s.AnnotationActionEndpointMapping : Supporting [WS-Addressing August 2004, WS-Addressing 1.0]
2019-09-08 11:32:02.286  INFO 6484 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
2019-09-08 11:32:02.321  INFO 6484 --- [  restartedMain] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2019-09-08 11:32:02.322  INFO 6484 --- [  restartedMain] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.24]
2019-09-08 11:32:02.605  INFO 6484 --- [  restartedMain] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
2019-09-08 11:32:02.612  INFO 6484 --- [  restartedMain] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2019-09-08 11:32:02.613  INFO 6484 --- [  restartedMain] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 1987 ms
2019-09-08 11:32:02.904  INFO 6484 --- [  restartedMain] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
2019-09-08 11:32:03.235  INFO 6484 --- [  restartedMain] o.s.b.d.a.OptionalLiveReloadServer       : LiveReload server is running on port 35729
2019-09-08 11:32:03.310  INFO 6484 --- [  restartedMain] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
2019-09-08 11:32:03.313  INFO 6484 --- [  restartedMain] com.javabrains.WebDemoApplication        : Started WebDemoApplication in 3.191 seconds (JVM running for 3.903)
2019-09-08 11:32:16.663  INFO 6484 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2019-09-08 11:32:16.663  INFO 6484 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2019-09-08 11:32:16.671  INFO 6484 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 8 ms

I expect the list.jsp should run successfully without any problems. please help me to resolve this problem.

Solution

Nothing happening because you haven't put any map on your method inside your controller. So put a map on method like

@GetMapping(value="")
public String hello(ModelMap Model) {
    return "list";
}

After running project open your browser and hit localhost:8080/customer

Hope this will work. Give response whether it works or not.

Answered By - Avijit Barua
Answer Checked By - Pedro (JavaFixing Volunteer)