For a learning purpose, i have started with a simple spring boot application in eclipse. I was able to run it successfully at http://localhost:8080. Next I added a controller. But i saw that the controller never gets triggered. Any help will be appreciated. The URL I use to access my controller is : http://localhost:8080/conference/greeting
My project structure:
pom.xml dependencies:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
Source Code:
#SpringBootApplication
public class ConferenceApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(ConferenceApplication.class, args);
}
}
#Controller
public class GreetingController {
#GetMapping("greeting")
public String greeting (Map<String, Object> model) {
model.put("message", "Hello Lok");
return "greeting";
}
}
application.properties
spring.mvc.view.prefix=/WEB-INF/jsp/
spring.mvc.view.suffix=.jsp
greeting.jsp:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Greeting</title>
</head>
<body>
<h1>${message}</h1>
</body>
</html>
Set server.servlet.context-path=/conference in application.properties or put the controller class annotation #RequestMapping("conference")
Related
I made an application and ran it via inteliji. All was well until I wated to move the application onto a server. I am getting a 404 error at the head of it, and my logs are empty.
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>
<artifactId>spring-boot-hello</artifactId>
<packaging>war</packaging>
<name>Spring Boot Hello World Example</name>
<version>1.0</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.5</version>
</parent>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<version>8.0.31</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>jquery</artifactId>
<version>3.6.1</version>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>webjars-locator-core</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-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web-services</artifactId>
</dependency>
<dependency>
<groupId>org.webjars</groupId>
<artifactId>bootstrap</artifactId>
<version>5.2.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<finalName>nameofwar</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
demoapplication.java
package com.example;
import com.example.demo.user.User;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
#SpringBootApplication
public class DemoApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
#Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(DemoApplication.class);
}
}
appcontroller
#RestController
public class AppController {
#Autowired
private final UserRepository userRepo;
private final AssignmentRepository assignmentRepo;
private final AssignmentService assignmentService;
private final ConfigService configService;
private final UserService userService;
#Autowired
public AppController(UserRepository userRepo, AssignmentService assignmentService,
AssignmentRepository assignmentRepo, ConfigService configService, UserService userService) {
this.userRepo = userRepo;
this.assignmentService = assignmentService;
this.assignmentRepo = assignmentRepo;
this.configService = configService;
this.userService = userService;
}
#GetMapping("")
public String viewHomePage() {
return "index";
}
}
application.properties
spring.datasource.url=jdbc:mysql://localhost:3306/<mydb>
spring.datasource.username=
spring.datasource.password=
spring.sql.init.mode=always
spring.sql.init.platform=mysql
spring.jpa.hibernate.ddl-auto=update
server.error.include-message=always
logging.level.=DEBUG
spring.servlet.multipart.max-file-size=128MB
spring.servlet.multipart.max-request-size=128MB
spring.http.multipart.enabled=true
server.error.include-exception=true
server.error.include-stacktrace=always
index.html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="ISO-8859-1">
<title>warname</title>
<link rel="stylesheet" type="text/css" href="/webjars/bootstrap/css/bootstrap.min.css" />
<script type="text/javascript" src="/webjars/jquery/jquery.min.js"></script>
<script type="text/javascript" src="/webjars/bootstrap/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container text-center">
<h2>Welcome</h2>
<!--<h3>Login</h3> -->
<div>
<h3><a th:href="#{/register}">Register</a> </h3>
<h3><a th:href="#{/login}"</a>Login</h3>
</div>
</div>
</body>
</html>
where I'm trying to go :
/nameofwar
I've looked through a hundred posts trying to find out what's going wrong and haven't found it yet. I'm using tomcat 9, java 11, java 11 on the server as well. Thanks for your help
Annotate your AppController with #org.springframework.stereotype.Controller instead of a RestController and try to use org.springframework.web.servlet.ModelAndView instead of a string
#GetMapping("")
public ModelAndView viewHomePage() {
return new ModelAndView("index");
}
I did not have my application.properties file filled out correctly to connect with my database and I needed to use Controller and not RestController everywhere
spring.jpa.database-platform=org.hibernate.dialect.MySQL5InnoDBDialect
spring.jpa.hibernate.ddl-auto=create
spring.datasource.driverClassName=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/<application_name>
spring.datasource.username=<username>
spring.datasource.password=<password>
here, whenever I trying to access or call the DAO method (which is written in #Repository class) in the JSP page in My spring MVC Project using Hibernate, it showing NullPointerException.
it works fine when I accessing this method in Controller class, it just throwing an exception in the JSP page.
and here expection i am getting,
SEVERE: Servlet.service() for servlet [jsp] threw exception
java.lang.NullPointerException
at com.lms.service.BookDetailsServiceImpl.getBookStatusForLibrarianById(BookDetailsServiceImpl.java:62)
here is my code,
in 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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.libmansystem</groupId>
<artifactId>LibraryManagementSystems</artifactId>
<packaging>war</packaging>
<version>1.0</version>
<name>LibraryManagementSystems Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<springframework.version>5.0.2.RELEASE</springframework.version>
<springsecurity.version>5.0.0.RELEASE</springsecurity.version>
<hibernate.version>5.4.14.Final</hibernate.version>
<mysql.connector.version>8.0.20</mysql.connector.version>
<c3po.version>0.9.5.5</c3po.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<!-- Spring MVC support -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- Spring Transactions -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- Spring ORM -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${springframework.version}</version>
</dependency>
<!-- Hibernate Core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<!-- Add MySQL and C3P0 support -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>${c3po.version}</version>
</dependency>
<!-- Servlet, JSP and JSTL support -->
<dependency>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jstl-impl</artifactId>
<version>1.2</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
</exclusion>
<exclusion>
<groupId>javax.servlet.jsp.jstl</groupId>
<artifactId>jstl-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<finalName>LibraryManagementSystems</finalName>
<pluginManagement>
<plugins>
<plugin>
<!-- Add maven co-ordinates for : maven-war-plugin -->
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.2.3</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
entity class,
#Entity
#Table(name = "book_status_forlibrarian")
public class BookStatusForLibrarian {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "s_id")
private Integer id;
#Column(name = "status")
private String status;
public BookStatusForLibrarian() {
}
public BookStatusForLibrarian(Integer id, String status) {
this.id = id;
this.status = status;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
#Override
public String toString() {
return "BookStatusForLibrarian [id=" + id + ", status=" + status + "]";
}
}
Dao interface and class,
public interface BookDetailsDAO {
public BookStatusForLibrarian getBookStatusForLibrarianById(int statusId);
}
#Repository
public class BookDetailsDAOImpl implements BookDetailsDAO{
private SessionFactory sessionFactory;
#Autowired
public BookDetailsDAOImpl(SessionFactory sessionFactory)
{
this.sessionFactory = sessionFactory;
}
public BookDetailsDAOImpl()
{
}
#Override
public BookStatusForLibrarian getBookStatusForLibrarianById(int statusId) {
Session theSession = sessionFactory.getCurrentSession();
BookStatusForLibrarian theBookStatusForLibrarian = theSession.get(BookStatusForLibrarian.class, statusId);
return theBookStatusForLibrarian;
}
}
my service interface and class,
public interface BookDetailsService {
public BookStatusForLibrarian getBookStatusForLibrarianById(int statusId);
}
#Service
public class BookDetailsServiceImpl implements BookDetailsService {
#Autowired
BookDetailsDAO theBookDetailsDAO;
#Override
#Transactional
public BookStatusForLibrarian getBookStatusForLibrarianById(int statusId) {
System.out.println("inside service ");
return theBookDetailsDAO.getBookStatusForLibrarianById(statusId);
}
}
my controller,
#Controller
public class HomePageController {
#GetMapping("/homepage")
public String getHomePage()
{
return "homepage";
}
}
in my JSP page I am getting exception,
/WEB-INF/view/homepage.jsp,
<%#page import="com.lms.service.NonServiceMethod"%>
<%#page import="com.lms.dao.BookDetailsDAOImpl"%>
<%#page import="com.lms.service.BookDetailsServiceImpl"%>
<%#page import="com.lms.service.BookDetailsService"%>
<%#page import="com.lms.entity.BookStatusForLibrarian"%>
<%# page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%# taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%# taglib prefix="form" uri="http://www.springframework.org/tags/form" %>
<%# page isELIgnored="false"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Show All Book</title>
</head>
<body>
<%
System.out.println("getting exception while calling Spring DAO method (which is written in #Repository class) in JSP page");
BookDetailsServiceImpl theBookDetailsService = new BookDetailsServiceImpl();
BookStatusForLibrarian getBookStatus= theBookDetailsService.getBookStatusForLibrarianById(3);
%>
</body>
</html>
and here expection i am getting,
SEVERE: Servlet.service() for servlet [jsp] threw exception
java.lang.NullPointerException
at com.lms.service.BookDetailsServiceImpl.getBookStatusForLibrarianById(BookDetailsServiceImpl.java:62)
please help me.
If you create the service in the JSP, it is not a Spring bean. There is no dependency injection done by Spring, you DAO is not injected in your service (NullPointerException). The correct way to pass the model (BookStatusForLibrarian) into the view (JSP) is to use the Controller.
#Controller
public class HomePageController {
#Autowired
BookDetailsService bookDetailsService;
#GetMapping("/homepage")
public String getHomePage(Model model) {
BookStatusForLibrarian bookStatus = bookDetailsService.getBookStatusForLibrarianById(3);
model.addAttribute("bookStatus", bookStatus);
return "homepage";
}
}
Then you can use bookStatus directly in the JSP without <% %> just like this: ${bookStatus.id}
I added Spring Security Starter dependency (I use Maven) to secure my app (following a tutorial); the problem is that once I add it, whenever I go to localhost to check my progress, I'm always redirected to a path that's coded in another project (I can't even find the view right now).
I currently follow the tutorial on TutorialsPoint, but I use Spring Tools Suite 4 for adding dependencies, coding and running my Spring application instead of CLI on localhost:8080.
I tried finding the view in question, tinkering with another project's web.xml, but I can't find the source of the problem, all I know is that Spring Security Starter is somehow mucking it up.
Thymeleaf template
<!DOCTYPE html>
<html>
<head>
<meta charset = "ISO-8859-1" />
<link href = "css/styles.css" rel = "stylesheet"/>
<title>Spring Boot Application</title>
</head>
<body>
<h4>Welcome to Thymeleaf Spring Boot web application</h4>
</body>
</html>
Web controller
package com.example.vj7.Controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
#Controller
public class WebController {
#RequestMapping(value = "/index")
public String index() {
return "index";
}
}
Application class
package com.example.vj7;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class Vj7Application {
public static void main(String[] args) {
SpringApplication.run(Vj7Application.class, args);
}
}
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 http://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>2.1.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>vj7</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>Vj7</name>
<description>Vježba 7</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</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.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
The expected result from "localhost:8080" is just a header "Demo" (like in index.html and set in web controller), but instead a form I worked on before on another Spring project shows up with path "/login".
You need to override some of web security's default configurations if you want index.html to be accessed without authorization. taken from https://docs.spring.io/spring-security/site/docs/4.2.5.RELEASE/apidocs/org/springframework/security/config/annotation/web/configuration/EnableWebSecurity.html
#Configuration
#EnableWebSecurity
public class MyWebSecurityConfiguration extends WebSecurityConfigurerAdapter {
#Override
protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().antMatchers("/", "/index").permitAll().anyRequest()
.permitAll();
}
}
I tried to implement an own error page handling.But my page doesnt show up.
Controller:
#Controller
public class MyCustomErrorController implements ErrorController {
#RequestMapping(value = "/error", method = RequestMethod.GET)
public String handleError() {
return "error";
}
#Override
public String getErrorPath() {
return "/error";
}}
I did my own error.html file in src/main/resources/static/html.
The html folder is created by myself. Where is the problem?
<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>
<!-- <scope>provided</scope> -->
</dependency>
</dependencies>
You can open your html file from static content like
localhost:8080/yourpagename
By default, Spring boot serves index.html as the root resource when accessing the root URL of a web application.
(yourhtml).html should exist under any of these paths:
src/main/resources/META-INF/resources/home.html
src/main/resources/resources/home.html
src/main/resources/static/home.html
src/main/resources/public/home.html
In order to view your error.html static page you need to return “error.html” in controller
In order to define your own static resource locations
you could use this property in application.properties or application.yml file :
spring.resources.static-locations=your own locations
was using the spring-boot-starter-web-mvc for initial development.When I deploy the war file on the server it is not loading css and js files, but when I run the same code using spring boot, it is working fine. Below is the directory structure and configuration loading the js and css file. Can anyone please let me know how to what is the problem ? Using only java based configuration for project. I have referred 8.1.1 in the doc before deploying the project and used the same pom file configuration as below.
Configuration file -
public class ViewWebAppConfig extends WebMvcConfigurerAdapter {
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
// configuration for assets/ static files
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
#Bean
public InternalResourceViewResolver viewResolver() {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/jsp/");
viewResolver.setSuffix(".jsp");
return viewResolver;
}
#Bean
public ResourceBundleMessageSource messageSource() {
ResourceBundleMessageSource rb = new ResourceBundleMessageSource();
rb.setBasenames(new String[] { "validation" });
return rb;
}
}
pom.xml file
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<log4j.version>2.7</log4j.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- Dependency for rendering jsp pages -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>tomcat</groupId>
<artifactId>jasper-compiler</artifactId>
<version>5.5.23</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>tomcat</groupId>
<artifactId>jasper-runtime</artifactId>
<version>5.5.23</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>tomcat</groupId>
<artifactId>jasper-compiler-jdt</artifactId>
<version>5.5.23</version>
<scope>provided</scope>
</dependency>
<!-- Dependency for rendering jsp pages -->
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-api</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>${log4j.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
</dependency>
</dependencies>
Loading the js and css using spring-tags as below -
<%#taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<spring:url value="/resources/assets/js/custom.min.js" var="customJS" />
<script src="${customJS}"></script>
<link href="${customFieldAgent}" rel="stylesheet"/>
<spring:url value="/resources/assets/css/customfieldAgent.css" var="customFieldAgent" />
Below is the server log -
17:03:10.014 [http-nio-8080-exec-7] DEBUG
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping
- Did not find handler method for [/${starrrJS}] 17:03:10.014 [http-nio-8080-exec-7] WARN
org.springframework.web.servlet.PageNotFound - No mapping found for
HTTP request with URI [/ui/$%7BstarrrJS%7D] in DispatcherServlet with
name 'dispatcher' 17:03:10.014 [http-nio-8080-exec-7] DEBUG
org.springframework.web.servlet.DispatcherServlet - Successfully
completed request 17:03:10.018 [http-nio-8080-exec-4] DEBUG
org.springframework.web.servlet.DispatcherServlet - DispatcherServlet
with name 'dispatcher' processing GET request for
[/ui/$%7BcustomJS%7D] 17:03:10.018 [http-nio-8080-exec-4] DEBUG
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping
- Looking up handler method for path /${customJS} 17:03:10.019 [http-nio-8080-exec-4] DEBUG
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping
- Did not find handler method for [/${customJS}] 17:03:10.019 [http-nio-8080-exec-4] WARN
org.springframework.web.servlet.PageNotFound - No mapping found for
HTTP request with URI [/ui/$%7BcustomJS%7D] in DispatcherServlet with
name 'dispatcher' 17:03:10.019 [http-nio-8080-exec-4] DEBUG
org.springframework.web.servlet.DispatcherServlet - Successfully
completed request
Try this way it is working for me.
Project Structure:
src/main/webapp/static/[css,js,images]
src/main/webapp/WEB-INF/views/[for all .jsp pages]
Configuration
#Configuration
#ComponentScan(basePackages = "parent package name where all packages reside")
public class ApplicationConfiguration extends WebMvcConfigurerAdapter {
#Override
public void configureViewResolvers(ViewResolverRegistry registry) {
InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
viewResolver.setViewClass(JstlView.class);
viewResolver.setPrefix("/WEB-INF/views/");
viewResolver.setSuffix(".jsp");
registry.viewResolver(viewResolver);
}
#Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
// when static resources are inside resources folder under WEB-INF
// registry.addResourceHandler("/resources/**").addResourceLocations("/WEB-INF/resources/");
// when static resources are inside static folder under webapp
registry.addResourceHandler("/static/**").addResourceLocations("/static/");
}
}
Let DispatcherServlet know how to pack things up...
import javax.servlet.Filter;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
public class ApplicationInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
#Override
protected Class<?>[] getRootConfigClasses() {
return new Class[] { ApplicationConfiguration.class };
}
#Override
protected Class<?>[] getServletConfigClasses() {
return null;
}
#Override
protected String[] getServletMappings() {
return new String[] { "/" };
}
}
Now call these on view like...
<%# page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
<%# taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!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=ISO-8859-1">
<link href="<c:url value='/static/css/application.css' />" rel="stylesheet"></link>
</head>
Add this in your pom.xml
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
Hope this will help you.
In my Spring Boot project,i tried to deploy as WAR file into TOMCAT,but it does not recognize the resource path,it throws 404 File not found error,But when i run as SpringBootApplication,it works properly,issue only when deploy as a WAR file into TOMCAT. so finally i revealed the issue now it works perfectly on my project structure
adding those lines into application.properties file
spring.resources.add-mappings=true
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/
i got from https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html
it works perfectly...
for this js,images,css or from outside of the war file images or any file can be shown and also get access by using
this below line is common to two scenarios
spring.resources.add-mappings=true
For in the spring boot war file or any file of spring to get accessed or shown this u have to put in application.properties file or any property file
spring.resources.static-locations=classpath:/META-INF/resources/,classpath:/resources/,classpath:/static/
For external access file or showing external files of images u may put as
spring.resources.static-locations=file:///C:/xxxxxxxxx/xxxxxxxxx
AS said vignesh R it was working great try it