java - Spring 启动: No matching bean found exception

Question

我的第一个 SpringBoot 应用程序中的登录页面:

主类

@SpringBootApplication

public class MainGate extends SpringBootServletInitializer {

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

    public static void main(String... args) {
        System.out.println("Booting .. ");
        SpringApplication.run(MainGate.class, args) ;
    }

}

我的 Gradle 文件

buildscript {
    ext {
        springBootVersion = '1.5.4.RELEASE'
    }
    repositories {
        maven {
            url "http://masked_domain/repository/external-proxy-group/"
        }
        maven {
            url "https://plugins.gradle.org/m2/"
        }
}
    dependencies {
        classpath("org.springframework.boot:spring-boot-gradle-plugin:${springBootVersion}")
    }
}

apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'org.springframework.boot'

group = 'com.arun'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = 1.8

task fatJar(type: Jar) {
    manifest {
        attributes(
            'Implementation-Title': 'Arun Spring Boot Application',
            'Implementation-Version': version,
            'Built-By': System.getProperty('user.name'),
            'Built-Date': new Date(),
            'Main-Class':  'com.arun.MainGate',
            'Built-JDK': System.getProperty('java.version')
        )
    }
    baseName = project.name + '-all'
    from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
    with jar
}

repositories {
        maven {
            url "http://masked_domain/repository/external-proxy-group/"
        }
        maven {
            url "https://plugins.gradle.org/m2/"
        }
}


dependencies {
    compile('org.springframework.boot:spring-boot-starter-web')
    testCompile('org.springframework.boot:spring-boot-starter-test')
    testImplementation 'junit:junit:4.12'
}

应用程序属性文件

spring.mvc.view.prefix: jsp/
spring.mvc.view.suffix: .jsp

logging.level.org.springframework=debug

资源文件夹

Controller 类

@Controller
public class CommonController {

    @RequestMapping("/")
    public String home(Map<String, Object> model) {
        System.out.println("Reached the homeContoller");
        return "sso_arch" ;
    }

}

异常

 017-10-20 17:01:28.568 TRACE 6704 --- [nio-8080-exec-1] .w.s.m.m.a.ServletInvocableHandlerMethod : Invoking 'com.arun.controller.CommonController.home' with arguments [{}]
Reached the homeContoller
2017-10-20 17:01:28.568 TRACE 6704 --- [nio-8080-exec-1] .w.s.m.m.a.ServletInvocableHandlerMethod : Method [com.arun.controller.CommonController.home] returned [sso_arch]
2017-10-20 17:01:28.574 DEBUG 6704 --- [nio-8080-exec-1] o.s.w.s.v.ContentNegotiatingViewResolver : Requested media types are [text/html, application/xhtml+xml, image/webp, image/apng, application/xml;q=0.9, */*;q=0.8] based on Accept header types and producible media types [*/*])
2017-10-20 17:01:28.574 DEBUG 6704 --- [nio-8080-exec-1] o.s.w.servlet.view.BeanNameViewResolver  : No matching bean found for view name 'sso_arch'
2017-10-20 17:01:28.577 DEBUG 6704 --- [nio-8080-exec-1] o.s.b.f.s.DefaultListableBeanFactory     : Invoking afterPropertiesSet() on bean with name 'sso_arch'

How to configure spring boot mvc app for JSP?中提到的解决方案不管用。

Answer 1

您找到了正确的问题，但您似乎没有在答案中添加解决方案，您需要 Add an InternalResourceViewResolver

This ViewResolver allows us to set properties such as prefix or suffix to the view name to generate the final view page URL:

@Bean
public ViewResolver getViewResolver(){
    InternalResourceViewResolver resolver = new InternalResourceViewResolver();
    resolver.setPrefix("/WEB-INF/jsp/");
    resolver.setSuffix(".jsp");
    resolver.setViewClass(JstlView.class);
    return resolver;
}

并确保你有依赖项:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-tomcat</artifactId>
</dependency>
<dependency>
    <groupId>org.apache.tomcat.embed</groupId>
    <artifactId>tomcat-embed-jasper</artifactId>
</dependency>
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
</dependency>