问题
first of all, please don't lock this thread, please. I've read all the questions, and they still cannot solve my problem.
I'm studying how to use annotation on spring without configuring xml files.
I'm stucking with the error:
No mapping found for HTTP request with URI [/WEB-INF/index.jsp] in DispatcherServlet with name 'dispatcherServlet'
This is the project structure
This my 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>
This is configuration class:
@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);
}
}
This is Controller:
@org.springframework.stereotype.Controller
public class Controller {
@RequestMapping(value="/", method = RequestMethod.GET)
public String index(){
return "index";
}
}
index.jsp is inside WEB-INF folders, and there is nothing inside web.xml file.
I think so far the configuration is correct because it can redirect to /WEB-INF/index.jsp.
However, I think that I'm missing some configuration to make the application to understand the path. (/WEB-INF/index.jsp)
回答1:
Given that you're using Spring Boot, your configuration is far more complicated than it needs to be. Boot will automatically configure the DispatcherServlet, ViewResolver, RequestMappingHandlerMapping, and RequestMappingHandlerAdapter for you.
Take a look at Spring Boot's JSP sample to see how little configuration you need.
In addition to removing pretty much all of the manual configuration, one key difference is that your main application class should extend SpringBootServletInitializer rather than implementing Spring's WebApplicationInitializer directly. Here's the equivalent class in the aforementioned sample:
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);
}
}
The main method is used when launched the war file using java -jar and the configure method is used when the war is deployed to a separate Servlet container.
Also note the sample's use of application.properties to configure the view prefix and suffix.
来源：https://stackoverflow.com/questions/26366806/no-mapping-found-for-http-request-with-uri-spring-4-1-annotation-configuration