Status 200, but JSP in Spring only displaying un-rendered code - spring

Question

Although my index.jsp opens in a browser with a Status 200 it only displays the JSP code.
I've read through what seem to be all related issues/solutions on this site, but none of the solutions have worked. e.g. adding jstl, jasper, etc. jars into my pom.xml and build path; mapping variations like "/", "/*", etc. No errors in the Spring log- just that JSPs aren't rendering or being "seen" as JSPs. My newest theories are that something is over-writing or conflicting, or that Spring needs something to "see" JSPs under the WEB-INF folder, but it's not easy to debug. Seems a stupid thing that a JSP doesn't render, so any insight would be helpful.
AppConfig
package mil.dfas.springmvc.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;
/**
* #author David Higgins
*/
#Configuration
#EnableWebMvc
#ComponentScan(basePackages = {"mil.dfas.springmvc.controller"})
public class AppConfig {
#Bean
public InternalResourceViewResolver resolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setViewClass(JstlView.class);
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
}
LMSInitializer
package mil.dfas.springmvc.config;
import java.util.EnumSet;
import javax.servlet.DispatcherType;
import javax.servlet.Filter;
import javax.servlet.FilterRegistration;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import mil.dfas.filters.LoginFilter;
import mil.dfas.filters.TimeoutFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
/**
* The Spring MVC DispatcherServlet needs to be declared and mapped for all request processing.
* In a Servlet 3.0+ environment, AbstractAnnotationConfigDispatcherServletInitializer class is used to register and initialize the DispatcherServlet programmatically.
*
* #author $Author: David Higgins $
* #version $Revision: 1.0 $ $Date: 2019/05/12 $
*/
public class LMSInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
private static final Logger LOGGER = LoggerFactory.getLogger(LMSInitializer.class);
#Override
public void onStartup(ServletContext servletContext) throws ServletException {
FilterRegistration timeoutFilter = servletContext.addFilter("timeoutFilter", new TimeoutFilter());
timeoutFilter.addMappingForUrlPatterns(EnumSet.allOf(DispatcherType.class), true, "*.do");
super.onStartup(servletContext);
}
#Override
protected Filter[] getServletFilters() {
LOGGER.info("LMSInitializer: Configuring Servlet Filters" );
LoginFilter loginFilter = new LoginFilter();
return new Filter[] {new LoginFilter()};
}
#Override
protected Class <?> [] getRootConfigClasses() {
return null;
}
#Override
protected Class <?> [] getServletConfigClasses() {
return new Class[] {AppConfig.class};
}
#Override
protected String[] getServletMappings() {
return new String[] {"/"};
}
}
LMSController
package mil.dfas.springmvc.controller;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* #author David Higgins
*/
#Controller
public class LMSSpringController {
#RequestMapping(value = "/index", method = RequestMethod.POST)
public ModelAndView forward(Model model) {
System.out.println("LMS Controller");
model.addAttribute("msg","Forward Handled");
return new ModelAndView("index");
}
}
WEB-INF/views/index.jsp
No error messages. JSPs just don't displays as JSPs.
The problem must be something with the pom.xml. It must be a conflict with dependencies. I've added jasper, jstl, and others, but no change. Status 200 and no log errors, but no jsp rendering.
<?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>2.1.7.RELEASE</version> <!-- 2.1.5.RELEASE ? -->
<relativePath />
</parent>
<groupId>mil.dfas.springmvc</groupId>
<artifactId>EmployeeDevelopment</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<properties>
<failOnMissingWebXml>false</failOnMissingWebXml>
<java.version>1.8</java.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-boot-starter -->
<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-data-jpa</artifactId>
</dependency>
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<!-- I think maybe including servlet dependencies is forcing servlet version
to 4.0 since no versions are included, so Spring Boot parent will provide
the defaults and maybe force latest version (?) A lot of this servlet stuff
should already be included in Tomcat bin (on build path) -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<!-- <scope>provided</scope> -->
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
</dependency>
<dependency>
<groupId>com.keypoint</groupId>
<artifactId>png-encoder</artifactId>
<version>1.5</version>
</dependency>
<dependency>
<groupId>org.apache.ant</groupId>
<artifactId>ant</artifactId>
<version>1.8.2</version>
</dependency>
<dependency>
<groupId>xerces</groupId>
<artifactId>xercesImpl</artifactId>
<version>2.12.0</version>
</dependency>
<dependency>
<groupId>org.jfree</groupId>
<artifactId>jfreechart</artifactId>
<version>1.0.14</version>
</dependency>
<dependency>
<groupId>jfree</groupId>
<artifactId>jcommon</artifactId>
<version>1.0.16</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>xalan</groupId>
<artifactId>xalan</artifactId>
<version>2.7.2</version>
</dependency>
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
</dependency>
<!-- As Oracle JDBC drivers are not in public Maven repositories (legal
reasons) downloading the jar was the best available option. -->
<dependency>
<groupId>com.oracle.jdbc</groupId>
<artifactId>ojdbc8</artifactId>
<version>12.2.0.1</version>
<scope>system</scope>
<systemPath>${basedir}/src/lib/ojdbc8.jar</systemPath>
</dependency>
<!-- Added 5/17/19 DJM, may want to get directly from Maven repo -->
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mailapi</artifactId>
<version>1.4.3</version>
</dependency>
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
</dependency>
</dependencies>
<build>
<sourceDirectory>src/main/java</sourceDirectory>
<plugins>
<plugin>
<!-- <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.8</source>
<target>1.8</target> </configuration> -->
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
<!-- Package as an executable jar/war -->
</plugins>
</build>
</project>