java - Spring Boot |本地主机 : 8080 404 error page displayed

Question

我创建了一个 Spring Boot Maven 项目，但是我的 RequestMapping 以及 localhost:8080 返回了 404 错误页面。我认为问题在于我的包是如何设置的，但我已经尝试了多个问题的解决方案，但我仍然无法绕过错误页面。你们能指出我如何解决这个问题的正确方向吗？也许我需要在主类上方添加 Component 注释？但是我试过这个解决方案，错误仍然存​​在。

这是我的包结构:

 /src/main/java
      ControllerLayer
           UsersController.java
      DataAccessLayer
           UsersDAL.java
      ServiceLayer
           UsersService.java
      Main
           Main.java

主要.java:

  @SpringBootApplication(scanBasePackages = { 
  "/src/main/java/ControllerLayer", "/src/main/java/DataAccessLayer", 
  "/src/main/java/ServiceLayer" })
  public class Main {

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

用户 Controller .java:

 import Entities.Users;
 import ServiceLayer.UsersService;

 @RestController
 @RequestMapping("/users")
 public class UsersController {

      @Autowired
      private UsersService usersService;

      @RequestMapping(value = 
      "/create/{userId}/{userPassword}/{userAge}/{userEmail}"
      + "/{userFirstName}/{userlastName}", method = 
      RequestMethod.POST)

      public void createUser(@PathVariable("userId")String userId, 
      @PathVariable("userPassword")String userPassword, 
      @PathVariable("userAge")int userAge, 
      @PathVariable("userEmail")String userEmail,
      @PathVariable("userFirstName")String userFirstName, 
      @PathVariable("userLastName")String userLastName) {

           usersService.createUser(new Users(userId, userPassword, 
           userAge, userEmail, userFirstName, userLastName));
      }
   }

用户服务.java

 import DataAccessLayer.UsersDAL;
 import Entities.Users;

 @Service
 public class UsersService {

    @Autowired
    private UsersDAL usersDAL;

    public void createUser(Users user) {
         usersDAL.createUser(user);
    }
 }

pom.xml:

 <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>xProjectAlpha</groupId>
      <artifactId>org.htech.xProjectAlpha</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>jar</packaging>

      <parent>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-parent</artifactId>
           <version>1.5.2.RELEASE</version>
      </parent>

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

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

           <dependency>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-core</artifactId>
                <version>5.2.9.Final</version><!--$NO-MVN-MAN-VER$-->
           </dependency>
      </dependencies>

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

 </project>

Answer 1

发送请求后，应返回响应。在您的情况下，您没有随响应发送任何内容，这就是您收到 404 错误(未找到页面)的原因。