Spring工具套件-控制台错误-whitelabel错误页面-拒绝访问

如何解决Spring工具套件-控制台错误-whitelabel错误页面-拒绝访问

带有MysqL后端的Spring Boot示例程序。非常简单的代码。我检查了申请。属性，对数据库的访问等。不知道为什么我收到此错误。

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>2.2.0.RELEASE</version>
         <relativePath/> <!-- lookup parent from repository -->
    </parent>
 <groupId>com.skb.course.apis</groupId>
<artifactId>library-apis</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>library-apis</name>
<description>Project for developing Library APIs</description>

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

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

    <!-- JPA Data (We are going to use Repositories,Entiries,Hibernate,etc...) -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>

    <!-- For MysqL connector-j -->
    <dependency>
        <groupId>MysqL</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>

    <!-- For implementing API Security -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-security</artifactId>
    </dependency>

    <!-- For handling JWT related functionality-->
    <dependency>
        <groupId>com.auth0</groupId>
        <artifactId>java-jwt</artifactId>
        <version>3.8.0</version>
    </dependency>

    <!-- Test related dependencies -->
    <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>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.12</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.h2database</groupId>
        <artifactId>h2</artifactId>
        <scope>test</scope>
    </dependency>

    <!-- Used for Integration Tests. Spring's TestRestTemplate throws an error while sending PUT requests with
     authorization error: java.net.HttpRetryException: cannot retry due to server authentication,in streaming mode
     Therefore we need to use Apaches's HTTP client. Please refer:
     https://stackoverflow.com/questions/16748969/java-net-httpretryexception-cannot-retry-due-to-server-authentication-in-stream
        -->
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
    </dependency>
</dependencies>

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

控制台没有错误，tomcat已配置为在3000端口上运行

application.properties文件

MysqL db显示数据库列表

Theere是PUBLISHER TABLE中的可用数据。但是会抛出拒绝访问错误

其他控制器代码

package com.skb.course.apis.libraryapis.publisher;

 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.*;

 import javax.validation.Valid;
 import java.util.UUID;

 @RestController
 @RequestMapping(path = "/v1/publishers")
 public class PublisherController {

 private static Logger logger = 
 LoggerFactory.getLogger(PublisherController.class);

 private PublisherService publisherService;

   public PublisherController(PublisherService publisherService) {
    this.publisherService = publisherService;
   }

   @GetMapping(path = "/{publisherId}")
   public ResponseEntity<?> getPublisher(@PathVariable Integer publisherId,@RequestHeader(value = "Trace-Id",defaultValue = "") String traceId)
        throws LibraryResourceNotFoundException {

    if (!LibraryApiUtils.doesstringValueExist(traceId)) {
        traceId = UUID.randomUUID().toString();
    }

    return new ResponseEntity<>(publisherService.getPublisher(publisherId,traceId),HttpStatus.OK);
}

}