'Controller return string "login" instead of redirecting to "login.jsp" in springboot application

hello i am trying to build a web services for login page in springboot. When I run the project application all looks fine but problem is that instead of redirecting to "login.jsp" page controller return the string value "login". Any idea where i did wrong?

pom.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>2.6.6</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.micro</groupId>
<artifactId>login-mvc</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>login-mvc</name>
<description>a micro service for login</description>
<properties>
    <java.version>11</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-web</artifactId>
    </dependency>

    <!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>3.0-alpha-1</version>
        <scope>provided</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-catalina -->
    <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-catalina</artifactId>
        <version>10.0.10</version>
    </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>
        <scope>runtime</scope>
    </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>

application properties

##port
server.port=9001

##DB Connection
spring.datasource.url= jdbc:mysql://localhost:3306/newdb?useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=create
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

##MVC view
spring.mvc.view.prefix=/WEB-INF/
spring.mvc.view.suffix= .jsp
spring.mvc.static-path-pattern=/resources/**

Controller

package com.micro.services;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class LoginController {
     @RequestMapping("/login-page")
     public String checkMVC() {
        return "login";
     }
}

SpringBootApplication :

package com.micro.services;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class LoginMvcApplication {
    public static void main(String[] args) {
        SpringApplication.run(LoginMvcApplication.class, args);
    }
}

login.jsp

<!doctype html>
<html lang="en">
<head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- Bootstrap CSS -->
    <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" 
    rel="stylesheet" integrity="sha384- 
    1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">

    <title>Login Page</title>
 </head>
<body>
    <h1>Hello Friends I am learning WebServices!!!</h1>
    <div>
        <form action="/login" method="post">
            <div><input type="text" name="userName" value=""></div>
            <div><input type="text" name="password" value=""></div>
            <div><input type="submit" name="login" value=""></div>
            <div><input type="button" name="Register" value=""></div>
        </form>
    </div>
    <!-- Optional JavaScript; choose one of the two! -->

    <!-- Option 1: Bootstrap Bundle with Popper -->
    <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" 
    integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" 
    crossorigin="anonymous"></script>

    <!-- Option 2: Separate Popper and Bootstrap JS -->
   <!--
   <script src="https://cdn.jsdelivr.net/npm/@popperjs/[email protected]/dist/umd/popper.min.js" 
   integrity="sha384-7+zCNj/IqJ95wo16oMtfsKbZ9ccEh31eOz1HGyDuCQ6wgnyJNSYdrPa03rtR1zdB" 
   crossorigin="anonymous"></script>
   <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.min.js" 
   integrity="sha384-QJHtvGhmr9XOIpI6YVutG+2QOK9T+ZnN4kzFN1RtK3zEFEIsxhlmWl5/YESvpZ13" 
   crossorigin="anonymous"></script>
   -->
</body>
</html>

Project: file structure

Browser: Output

javaspring-bootrestweb-services


Solution 1:[1]

@RestController   <---------------
public class LoginController {
     @RequestMapping("/login-page")
     public String checkMVC() {
        return "login";
     }

The problem as I have marked in your code is that you have used @RestController, meaning it would parse the request and give back a response as the actual message body when you do return "login". So in the body of response it is just written the String "login".

What you need instead is @Controller which will work in context of Spring MVC, and when you do return "login", it will by default search for a page with the name login to return, so it would translate your login.jsp into some html code and would return this page to the client as a response.

Edit: There is another problem with your project as well. As indicated by the Spring boot doc, when you package your application as jar, there are problems with rendering jsp views.

Check this answer to see how you can configure it to work.

Sources

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Source: Stack Overflow

Solution Source
Solution 1

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