Question

首先，请不要锁定这个帖子。我已经阅读了所有问题，但仍然无法解决我的问题我正在研究如何在没有配置xml文件的情况下在spring上使用注释我一直坚持这个错误：

找不到带有URI [/WEB-INF/index.jsp]的HTTP请求的映射 DispatcherServlet，名称为＆＃39; dispatcherServlet＆＃39;

这是项目结构
enter image description here

这是我的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>

    <groupId>com.mycompany</groupId>
    <artifactId>spring-sample</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>

    <name>spring-sample</name>

    <properties>
        <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.2.0.M2</version>
    </parent>

    <dependencies>
        <dependency>
            <groupId>javax</groupId>
            <artifactId>javaee-web-api</artifactId>
            <version>7.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>http://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <url>http://repo.spring.io/snapshot</url>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <url>http://repo.spring.io/milestone</url>
        </pluginRepository>
    </pluginRepositories>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.7</source>
                    <target>1.7</target>
                    <compilerArguments>
                        <endorseddirs>${endorsed.dir}</endorseddirs>
                    </compilerArguments>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <version>2.6</version>
                <executions>
                    <execution>
                        <phase>validate</phase>
                        <goals>
                            <goal>copy</goal>
                        </goals>
                        <configuration>
                            <outputDirectory>${endorsed.dir}</outputDirectory>
                            <silent>true</silent>
                            <artifactItems>
                                <artifactItem>
                                    <groupId>javax</groupId>
                                    <artifactId>javaee-endorsed-api</artifactId>
                                    <version>7.0</version>
                                    <type>jar</type>
                                </artifactItem>
                            </artifactItems>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

这是配置类：

@ComponentScan(basePackages = "com.sample.spring")
@EnableAutoConfiguration
@EnableWebMvc
@org.springframework.context.annotation.Configuration
public class MainApp extends WebMvcConfigurerAdapter implements WebApplicationInitializer {

    @Override
    public void onStartup(ServletContext sc) throws ServletException {

        // Create the 'root' Spring application context
        AnnotationConfigWebApplicationContext rootContext
                = new AnnotationConfigWebApplicationContext();
        rootContext.register(MainApp.class);

        // Manage the lifecycle of the root application context
        sc.addListener(new ContextLoaderListener(rootContext));

        ServletRegistration.Dynamic registration = sc.addServlet("dispatcher", new DispatcherServlet());
        registration.setLoadOnStartup(1);
        registration.addMapping("/");
    }

    @Bean
    public ViewResolver configureViewResolver() {
        InternalResourceViewResolver viewResolve = new InternalResourceViewResolver();
        viewResolve.setPrefix("/WEB-INF/");
        viewResolve.setSuffix(".jsp");

        return viewResolve;
    }

    @Bean
    public RequestMappingHandlerMapping requestMappingHandlerMapping() {
        return new RequestMappingHandlerMapping();
    }

    @Bean
    public RequestMappingHandlerAdapter requestMappingHandlerAdapter() {
        return new RequestMappingHandlerAdapter();
    }

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

这是控制器：

@org.springframework.stereotype.Controller
public class Controller {

    @RequestMapping(value="/", method = RequestMethod.GET)
    public String index(){
        return "index";
    }

}

index.jsp在WEB-INF文件夹中，web.xml文件中没有任何内容。
我认为到目前为止配置是正确的，因为它可以重定向到/WEB-INF/index.jsp。但是，我认为我缺少一些配置来让应用程序理解路径。（/WEB-INF/index.jsp）

Answer 1

鉴于您使用的是Spring Boot，您的配置远比它需要的复杂得多。引导将自动为您配置DispatcherServlet，ViewResolver，RequestMappingHandlerMapping和RequestMappingHandlerAdapter。

请查看Spring Boot's JSP sample，了解您需要的配置。

除了删除几乎所有的手动配置之外，一个关键的区别是你的主应用程序类应该扩展SpringBootServletInitializer而不是直接实现Spring的WebApplicationInitializer。这是上述样本中的等价类：

package sample.jsp;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.context.web.SpringBootServletInitializer;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;

@Configuration
@EnableAutoConfiguration
@ComponentScan
public class SampleWebJspApplication extends SpringBootServletInitializer {

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

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

}

使用main启动war文件时使用java -jar方法，并在将war部署到单独的Servlet容器时使用configure方法。

另请注意sample's use of application.properties配置视图前缀和后缀。

找不到带URI的HTTP请求的映射（spring 4.1 annotation配置）

1 个答案: