春季启动：不会打开jsp文件

Question

I'm developing simple Spring Boot MVC application. Althought I have read many answers on SO I still can't fix Spring Boot not finding my .jsp files - it displays whitelabel error page.

Project Structure:

1. 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/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.learnbook</groupId> <artifactId>learnbook</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>LearnBook</name> <description>We want to make the best courses in the market </description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.3.RELEASE</version> </parent> <dependencies> <!-- https://mvnrepository.com/artifact/javax.servlet/jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>org.hibernate.common</groupId> <artifactId>hibernate-commons-annotations</artifactId> <version>4.0.4.Final</version> </dependency> <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>4.3.10.Final</version> </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-security</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>4.3.11.Final</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </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.springframework.security</groupId> <artifactId>spring-security-taglibs</artifactId> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <!-- Apache Commons Upload --> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>com.cloudinary</groupId> <artifactId>cloudinary-http44</artifactId> <version>1.4.6</version> </dependency> <dependency> <groupId>com.cloudinary</groupId> <artifactId>cloudinary-taglib</artifactId> <version>1.4.6</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <properties> <maven.compiler.target>1.8</maven.compiler.target> <maven.compiler.source>1.8</maven.compiler.source> <java.version>1.8</java.version> </properties> </project> 

2.LearnBookApplication.java

    @EnableJpaRepositories(basePackages = "net.learnbook.repository")
    @SpringBootApplication
    public class LearnBookApplication {

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

        @Bean
        @ConfigurationProperties(prefix = "datasource.main")
        public DataSource siteDataSourceBean() {
            return DataSourceBuilder.create().build();
        }

        @Bean
        public LocalContainerEntityManagerFactoryBean siteEntityManagerFactoryBean(EntityManagerFactoryBuilder builder) {
            return builder.dataSource(siteDataSourceBean()).packages("net.learnbook.model").persistenceUnit("learnbookPU")
                    .build();
        }

    }

3.ServletInitializer.java

    public class ServletInitializer extends SpringBootServletInitializer {

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

4. web.xml

    <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1"> <display-name>learnbook</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> </web-app> 

5. application.properties

    spring.mvc.view.prefix=/WEB-INF/views/ spring.mvc.view.suffix=.jsp security.basic.enabled=false datasource.main.url: jdbc:mysql://localhost/learnbook?autoReconnect=true&useSSL=false datasource.main.username:root datasource.main.password:root datasource.main.driverClassName:com.mysql.jdbc.Driver spring.jpa.generate-ddl=true spring.jpa.hibernate.ddl-auto:create-drop spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect spring.jpa.show-sql=true 

6. Controller

    @Controller public class ViewController { @RequestMapping(value = "/", method = { RequestMethod.GET,RequestMethod.POST}, name = "home_index") public String index() { return "index"; } }' 

Answer 1

FYI

From Spring boot Documentation:

JSPs should be avoided if possible, there are several known limitations when using them with embedded servlet containers. You can take further reading here:

http://docs.spring.io/spring-boot/docs/1.5.3.RELEASE/reference/htmlsingle/#boot-features-spring-mvc-template-engines

I believe that this means if you still want to use JSP pages, then you'll have to get rid of the embedded tomcat.