Java Spring 与 swagger2 未启动服务器

Question

嗨，

我正在尝试为大学类(class)创建一个 Java Spring Web 应用程序。我创建了连接到两个服务类的 Rest Controller 类。服务类通过JPA 连接到数据库。当我摆脱与构建问题相关的错误时，我决定检查一切是否在 swagger 中正确可见。这里出现了问题，因为尽管创建了配置文件，但服务器无法启动。应用程序编译正确，但 Tomcat 服务器未出现，并且无法通过 localhost:8080 连接到服务器。如果有任何错误，我会处理，但在控制台中一切看起来都很好，或者我只是这么认为。

休息 Controller 类:

@RestController
public class JDBCController {
    @Autowired
    private IDelegationService delegationService;
    @Autowired
    private IUserService userService;

    @RequestMapping(value = "/registerUser", method = RequestMethod.POST)
    @ResponseBody
    public void registerUser(@ModelAttribute User user) {

        userService.save(user);

    }

    @RequestMapping(value = "/getAllUsers", method = RequestMethod.GET)
    @ResponseBody
    public List<User> getAllUsers() {
        return userService.findAll();
    }

    @RequestMapping(value = "/changePassword", method = RequestMethod.PUT)
    @ResponseBody
    public void changePassword(@RequestParam("userId") long userId, @RequestParam("newPassword") String newPassword) {
        userService.updatePassword(userId, newPassword);
    }

    @RequestMapping(value = "/deleteUserById", method = RequestMethod.DELETE)
    @ResponseBody
    public boolean deleteUserById(@RequestParam("userId") long userId) {

        return userService.deleteById(userId);

    }

    @RequestMapping(value = "/getAllUsersByRoleName", method = RequestMethod.GET)
    @ResponseBody
    public List<User> getAllUsersByRoleName(@RequestParam("roleName") String roleName) {
        return userService.getAllUsersByRoleName(roleName);
    }

    @RequestMapping(value = "/addDelegation", method = RequestMethod.POST)
    @ResponseBody
    public void addDelegation(@RequestParam("userId") long userId, @ModelAttribute Delegation delegation) {

        delegationService.save(userId, delegation);

    }

    @RequestMapping(value = "/removeDelegation", method = RequestMethod.DELETE)
    @ResponseBody
    public boolean removeDelegation(@RequestParam("userId") long userId,
            @RequestParam("delegationId") long delegationId) {
        if (delegationId != 0L) {
            return delegationService.deleteById(delegationId);
        } else if (userId != 0L) {
            return delegationService.deleteByUser(userId);
        }
        return false;

    }

    @RequestMapping(value = "/changeDelegation", method = RequestMethod.PUT)
    @ResponseBody
    public void changeDelegation(@RequestParam("delegationId") long delegationId,
            @ModelAttribute Delegation delegation) {
        delegationService.updateDelegation(delegationId, delegation);
    }

    @RequestMapping(value = "/getAllDelegations", method = RequestMethod.GET)
    @ResponseBody
    public List<Delegation> getAllDelegations(){
        return delegationService.findAll();

    }

    @RequestMapping(value = "/getAllDelegationsOrderByDateStartDesc", method = RequestMethod.GET)
    @ResponseBody
    public List<Delegation> getAllDelegationsOrderByDateStartDesc(){
        return delegationService.findAllOrderByDateStartDesc();

    }

    @RequestMapping(value = "/getAllDelegationsByUserOrderByDateStartDesc", method = RequestMethod.GET)
    @ResponseBody
    public List<Delegation> getAllDelegationsByUserOrderByDateStartDesc(@RequestParam("userId") Long userId){
        return delegationService.findByUserOrderByDateStartDesc(userId);

    }

}

Swagger 配置类:

@Configuration
@EnableSwagger2
public class SpringFoxConfig {

     @Bean
      public Docket mainConfig() {
        return new Docket(DocumentationType.SWAGGER_2)
            .select().apis(RequestHandlerSelectors.any())
            .paths(PathSelectors.any())
            .build()
            .pathMapping("/swagger")
            .directModelSubstitute(LocalDate.class, String.class)
            .genericModelSubstitutes(ResponseEntity.class);
      }
}

pom 文件:

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.5.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.project</groupId>
    <artifactId>Laboratorium1</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>Laboratorium1</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>

        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
    </dependencies>

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

</project>

控制台:

[INFO] Scanning for projects...
[INFO] 
[INFO] ---------------------< com.project:Laboratorium1 >----------------------
[INFO] Building Laboratorium1 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] 
[INFO] >>> spring-boot-maven-plugin:2.2.5.RELEASE:run (default-cli) > test-compile @ Laboratorium1 >>>
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) @ Laboratorium1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ Laboratorium1 ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] --- maven-resources-plugin:3.1.0:testResources (default-testResources) @ Laboratorium1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory C:\Users\Admin\eclipse-workspace\PSS_Kulesza_Durol\src\test\resources
[INFO] 
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) @ Laboratorium1 ---
[INFO] Nothing to compile - all classes are up to date
[INFO] 
[INFO] <<< spring-boot-maven-plugin:2.2.5.RELEASE:run (default-cli) < test-compile @ Laboratorium1 <<<
[INFO] 
[INFO] 
[INFO] --- spring-boot-maven-plugin:2.2.5.RELEASE:run (default-cli) @ Laboratorium1 ---
[INFO] Attaching agents: []

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v2.2.5.RELEASE)

2020-03-16 20:18:07.785  INFO 4176 --- [           main] c.p.L.Laboratorium1Application           : Starting Laboratorium1Application on DESKTOP-7SPKPTP with PID 4176 (C:\Users\Admin\eclipse-workspace\PSS_Kulesza_Durol\target\classes started by Admin in C:\Users\Admin\eclipse-workspace\PSS_Kulesza_Durol)
2020-03-16 20:18:07.788  INFO 4176 --- [           main] c.p.L.Laboratorium1Application           : No active profile set, falling back to default profiles: default
2020-03-16 20:18:08.357  INFO 4176 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-03-16 20:18:08.456  INFO 4176 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 90ms. Found 3 JPA repository interfaces.
2020-03-16 20:18:08.898  INFO 4176 --- [           main] o.hibernate.jpa.internal.util.LogHelper  : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-03-16 20:18:09.040  INFO 4176 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate ORM core version 5.4.12.Final
2020-03-16 20:18:09.187  INFO 4176 --- [           main] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-03-16 20:18:09.521  INFO 4176 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2020-03-16 20:18:10.116  INFO 4176 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2020-03-16 20:18:10.137  INFO 4176 --- [           main] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2020-03-16 20:18:11.044  INFO 4176 --- [           main] o.h.e.t.j.p.i.JtaPlatformInitiator       : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2020-03-16 20:18:11.051  INFO 4176 --- [           main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2020-03-16 20:18:11.720  INFO 4176 --- [           main] c.p.L.Laboratorium1Application           : Started Laboratorium1Application in 4.355 seconds (JVM running for 4.983)
2020-03-16 20:18:11.726  INFO 4176 --- [extShutdownHook] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2020-03-16 20:18:11.729  INFO 4176 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2020-03-16 20:18:11.734  INFO 4176 --- [extShutdownHook] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  8.320 s
[INFO] Finished at: 2020-03-16T20:18:11+01:00
[INFO] ------------------------------------------------------------------------

提前感谢您的帮助。\

编辑1

这就是我的主要方法和类的样子:

@SpringBootApplication
public class Laboratorium1Application {

    public static void main(String[] args) {
        SpringApplication.run(Laboratorium1Application.class, args);
    }

}

现在，好像应该在此处添加一些内容，以便可以看到配置文件。

我的项目文件夹:

现在我才注意到没有html文件。看看这些例子，我认为它会自行生成，但显然我错了。有人知道我可以从哪里下载它。

Answer 1

您需要在 pom.xml 文件中一个额外的依赖项来启动 Spring Boot(嵌入式 Tomcat)服务器:spring-boot-starter-web 添加该依赖项即可一切顺利。

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