api - 考虑在您的配置中定义类型为 'javax.servlet.ServletContext' 的 bean

Question

我正在尝试将 API 与 postgres 数据库连接。为此，我使用 Spring Boot。 测试 api 时，我不断收到错误

Consider defining a bean of type 'javax.servlet.ServletContext' in your configuration.

我知道我需要一个用于ServletController的@Bean，但我不知道这个bean到底应该做什么。当我做了一个通用的，但后来控制台告诉我重新访问它。我不知道在这里做什么，stackoverflow 也没有帮助。

这是我的应用程序文件:

@SpringBootApplication
@SwaggerDefinition
@EnableSwagger2
@EnableConfigurationProperties(XXXXConfiguracaoApplication.class)
public class FonumS3ApiApplication  {

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

    @Bean
    public Docket api() { 
       return new Docket(DocumentationType.SWAGGER_2)  
         .select()                                  
         .apis(RequestHandlerSelectors.any())
         .paths(PathSelectors.any()) 
         .build()
         .apiInfo(apiInfo());                                           
    }

    private ApiInfo apiInfo() {
         return new ApiInfo(
             "API XXXX", 
             "API XXXX para integrações entre sistemas.", 
             "API V1", 
             "Terms of service", 
             new Contact("XXXX", "www.XXXX.com", "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="96cecececeb8cecececed6cecececeb8f5f9fb" rel="noreferrer noopener nofollow">[email protected]</a>"), 
             "License of XXX", "API license URL", Collections.emptyList());
        }
    }
} 

(注释在那里，但由于某种原因，stackoverflow 不接受它们)而我的 pom 是

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.4.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>6.0.13.Final</version>
</dependency>

    <dependency>
        <groupId>javax</groupId>
        <artifactId>javaee-api</artifactId>
        <version>7.0</version>
        <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-web</artifactId>

        <exclusions>
          <exclusion>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
          </exclusion>
        </exclusions>

    </dependency>

     <dependency>
        <groupId>org.postgresql</groupId>
        <artifactId>postgresql</artifactId>
    </dependency>   

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-configuration-processor</artifactId>
        <optional>true</optional>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>2.8.0</version>
    </dependency>

    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>2.8.0</version>
    </dependency>

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

Answer 1

由于您已从 Web 中排除 Tomcat 并添加了 Tomcat 提供的范围，因此我假设您正在尝试创建 war 并在外部 Tomcat 上部署，因此您必须扩展 SpringBootServletInitializer 并覆盖 configure 方法。

@SpringBootApplication
@SwaggerDefinition
@EnableSwagger2
@EnableConfigurationProperties(XXXXConfiguracaoApplication.class)
public class FonumS3ApiApplication extends SpringBootServletInitializer {

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

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

    @Bean
    public Docket api() { 
       return new Docket(DocumentationType.SWAGGER_2)  
         .select()                                  
         .apis(RequestHandlerSelectors.any())
         .paths(PathSelectors.any()) 
         .build()
         .apiInfo(apiInfo());                                           
    }

    private ApiInfo apiInfo() {
         return new ApiInfo(
             "API XXXX", 
             "API XXXX para integrações entre sistemas.", 
             "API V1", 
             "Terms of service", 
             new Contact("XXXX", "www.XXXX.com", "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="81d9d9d9d9afd9d9d9d9c1d9d9d9d9afe2eeec" rel="noreferrer noopener nofollow">[email protected]</a>"), 
             "License of XXX", "API license URL", Collections.emptyList());
        }
    }
} 

或者，如果您使用嵌入式 Tomcat 运行，则不要更改主类中的任何内容，并从 Web 中删除 exclusion 并删除 Tomcat jar:

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>

并删除下面的 Tomcat jar:

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-tomcat</artifactId>
        <scope>provided</scope>
    </dependency>