Issue

This Content is from Stack Overflow. Question asked by Alex

I know that this question duplicates these questions.

https://techhelpnotes.com/java-how-to-use-both-thymeleaf-and-jsp-in-same-spring-boot-project/

how to use both thymeleaf and jsp in same spring boot project

But none of these sources helped me.

Following one of the previous guides, I added a configuration class. After that, the controller began to see the files, but about calling a file with the extension from the browser .jsp error appears.

here is the project code:

@EnableWebMvc
public class ViewConfiguration implements WebMvcConfigurer {
 @Autowired
 WebApplicationContext webApplicationContext;

 @Bean
 public SpringResourceTemplateResolver thymeleafTemplateResolver(){
     SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
     templateResolver.setApplicationContext(webApplicationContext);
     templateResolver.setOrder(9);
     templateResolver.setPrefix("/WEB-INF/views/");
     templateResolver.setSuffix("");
     return templateResolver;
 }

 @Bean
 public SpringTemplateEngine templateEngine() {
     SpringTemplateEngine springTemplateEngine= new SpringTemplateEngine();
     springTemplateEngine.setTemplateResolver(thymeleafTemplateResolver());
     springTemplateEngine.setEnableSpringELCompiler(true);
     return springTemplateEngine;
 }

 @Bean
 public ThymeleafViewResolver thymeleafViewResolver(){
     final ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
     viewResolver.setViewNames(new String[] {"*.html"});
     viewResolver.setExcludedViewNames(new String[] {"*.jsp"});
     viewResolver.setTemplateEngine(templateEngine());
     viewResolver.setCharacterEncoding("UTF-8");
     return viewResolver;
 }

 @Bean
 public InternalResourceViewResolver jspViewResolver(){
     final InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
     viewResolver.setOrder(10);
     viewResolver.setViewClass(JstlView.class);
     viewResolver.setPrefix("/WEB-INF/views/");
     viewResolver.setSuffix("");
     viewResolver.setViewNames("*.jsp");
     return viewResolver;
 }
}

MyController.java

@Controller
public class MyController {
 

    @GetMapping("/1")
    public String jsp() {
        return "jj.jsp";
    }

    @GetMapping("/2")
    public String html() {
        return "hh.html";
    }
}

JspAndThymeleafApplication.java

@SpringBootApplication
public class JspAndThymeleafApplication {

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

}

ServletInitializer.java

public class ServletInitializer extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(JspAndThymeleafApplication.class);
    }

}

<?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>2.7.3</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>jspAndThymeleaf</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>
    <name>jspAndThymeleaf</name>
    <description>jspAndThymeleaf</description>
    <properties>
        <java.version>11</java.version>
    </properties>


    <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>


        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>jakarta.servlet.jsp.jstl</artifactId>
            <version>2.0.0</version>
        </dependency>
        <!-- thymeleaf -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </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>
        </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-security</artifactId>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

project structure:

При вызове http://localhost:8090/1

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Sun Sep 18 15:05:38 MSK 2022
There was an unexpected error (type=Internal Server Error, status=500).
javax/servlet/jsp/jstl/core/Config
java.lang.NoClassDefFoundError: javax/servlet/jsp/jstl/core/Config
    at org.springframework.web.servlet.support.JstlUtils.exposeLocalizationContext(JstlUtils.java:103)
    at org.springframework.web.servlet.view.JstlView.exposeHelpers(JstlView.java:137)
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:145)
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:316)
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1404)
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1148)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1087)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360)
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789)
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)
    at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    at java.base/java.lang.Thread.run(Thread.java:829)
Caused by: java.lang.ClassNotFoundException: javax.servlet.jsp.jstl.core.Config
    at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
    at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
    ... 38 more

In the files.jj.jsp and hh.html simple hello world projects

Solution

Put below code in @configuration class. I can able to access both jsp and html files now.

@Autowired
WebApplicationContext webApplicationContext;

@Bean
public SpringResourceTemplateResolver thymeleafTemplateResolver(){
    SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
    templateResolver.setApplicationContext(webApplicationContext);
    templateResolver.setOrder(9);
    templateResolver.setPrefix("/WEB-INF/views/");
    templateResolver.setSuffix("");
    return templateResolver;
}

@Bean
public SpringTemplateEngine templateEngine() {
    SpringTemplateEngine springTemplateEngine= new SpringTemplateEngine();
    springTemplateEngine.setTemplateResolver(thymeleafTemplateResolver());
    springTemplateEngine.setEnableSpringELCompiler(true);
    return springTemplateEngine;
}

@Bean
public ThymeleafViewResolver thymeleafViewResolver(){
    final ThymeleafViewResolver viewResolver = new ThymeleafViewResolver();
    viewResolver.setViewNames(new String[] {"*.html"});
    viewResolver.setExcludedViewNames(new String[] {"*.jsp"});
    viewResolver.setTemplateEngine(templateEngine());
    viewResolver.setCharacterEncoding("UTF-8");
    return viewResolver;
}

@Bean
public InternalResourceViewResolver jspViewResolver(){
    final InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
    viewResolver.setOrder(10);
    viewResolver.setViewClass(JstlView.class);
    viewResolver.setPrefix("/WEB-INF/views/");
    viewResolver.setSuffix("");
    viewResolver.setViewNames("*.jsp");
    return viewResolver;
}

This Question was asked in StackOverflow by Prabagaran Sellamuthu and Answered by Prabagaran Sellamuthu It is licensed under the terms of CC BY-SA 2.5. - CC BY-SA 3.0. - CC BY-SA 4.0.