java - 如何解决: "There was an unexpected error (type=Not Found, status=404)"

Question

我正在使用此 Controller 启动 Spring Boot 应用程序

@RestController
@RequestMapping({"/api"})
public class ProduitImmobilierController {

    Logger logger = LoggerFactory.getLogger(ProduitImmobilierController.class);

    @Autowired
    private ProduitImmobilierService produitImmobilierService;

    @RequestMapping(value = "/produitimmobilier/all/{pageSize}/{page}",
    method = RequestMethod.GET,
    produces = {"text/plain;charset=UTF-8", MediaType.APPLICATION_JSON_VALUE},
    consumes = {"text/plain;charset=UTF-8", MediaType.APPLICATION_JSON_VALUE})
    public @ResponseBody List<ProduitImmobilierDTO> findAll(@PathVariable("pageSize") int pageSize, @PathVariable("page") int page){
        logger.info("CONTROLLER PRODUITIMMOBILIERSERVICE CA PASSE");
        return produitImmobilierService.findAll(pageSize, page);
    }

我检查应用程序是否正在监听端口 8080我尝试在 Firefox 上使用此 URL 访问此 Controller

http://localhost:8080/api/produitimmobilier/all/5/1

我收到此错误

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Nov 13 20:48:53 CET 2019
There was an unexpected error (type=Not Found, status=404).
No message available

这是项目树

如何解决？

我添加了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 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>2.1.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demoImmobilierBack</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demoImmobilierBack</name>
    <description>Demo project for Spring Boot</description>

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

    <dependencies>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.17</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate.hql</groupId>
            <artifactId>hibernate-hql-parser</artifactId>
            <version>1.5.0.Final</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <!-- https://mvnrepository.com/artifact/javax.persistence/javax.persistence-api -->
        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
            <version>2.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>   
        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>test</scope>
<!--            <version>1.4.194</version> -->
        </dependency>   
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.10</version>
            <scope>provided</scope>
        </dependency>       
    </dependencies>

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

    <repositories>
        <repository>
            <id>spring-releases</id>
            <name>Spring Releases</name>
            <url>https://repo.spring.io/libs-release</url>
        </repository>
        <repository>
            <id>org.jboss.repository.releases</id>
            <name>JBoss Maven Release Repository</name>
            <url>https://repository.jboss.org/nexus/content/repositories/releases</url>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>spring-releases</id>
            <name>Spring Releases</name>
            <url>https://repo.spring.io/libs-release</url>
        </pluginRepository>
    </pluginRepositories>

</project>

当我使用以下网址点击应用程序时:http://localhost:8080/api/produitimmobilier/all/5/1

2019-11-14 12:20:58.770  INFO 2998 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring DispatcherServlet 'dispatcherServlet'
2019-11-14 12:20:58.770  INFO 2998 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Initializing Servlet 'dispatcherServlet'
2019-11-14 12:20:58.787  INFO 2998 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : Completed initialization in 17 ms

Answer 1

尝试:

@RestController
@RequestMapping("/api")
    public class ProduitImmobilierController {
        ...
        ...
        ... 
    }