考虑在您的配置中定义一个“com.jd.springdata.product.KlientJDBCTemplate”类型的 bean

如何解决考虑在您的配置中定义一个“com.jd.springdata.product.KlientJDBCTemplate”类型的 bean

我正在尝试运行连接到本地 MySQL 服务器的 spring 应用程序，但我遇到了无法解决的错误。

Description:

com.jd.springdata.product.StartApplication 中的字段 klientJDBCTemplate 需要一个无法找到的类型为“com.jd.springdata.product.KlientJDBCTemplate”的 bean。

注入点有以下注释： - @org.springframework.beans.factory.annotation.Autowired(required=true)

操作：

考虑在您的配置中定义一个“com.jd.springdata.product.KlientJDBCTemplate”类型的 bean。

客户端JDBC类代码

import java.util.List;
import javax.sql.DataSource;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
public class KlientJDBCTemplate implements KlientDAO { 
    private DataSource dataSource;
    private JdbcTemplate jdbcTemplateObject;
    public void setDataSource(DataSource dataSource) { 
        this.dataSource = dataSource;
        this.jdbcTemplateObject = new JdbcTemplate(dataSource);
    }   
    public void insert(String name,Integer age) {
        String SQL = "insert into Klient (name,age) values (?,?)";
        jdbcTemplateObject.update( SQL,name,age);
        System.out.println("Created Record Name = " + name + " Age = " + age);
        return;
    }
    public Klient findByid(Integer id) {
        String SQL = "select * from Klient where id = ?";
        Klient klient = jdbcTemplateObject.queryForObject(SQL,new KlientRowMapper(),id);
        return klient; 
    }
    public List<Klient> listaKlientow() {
        String SQL = "select * from Klient";
        List <Klient> klienci = jdbcTemplateObject.query(SQL,new KlientRowMapper());
        return klienci;
    }
    public void delete(Integer id) {
        String SQL = "delete from Klient where id = ?"; 
        jdbcTemplateObject.update(SQL,id); 
        System.out.println("Deleted Record with ID = " + id ); 
        return;
    }   
    public void update(Integer id,Integer age) {
        String SQL = "update Klient set age = ? where id = ?"; 
        jdbcTemplateObject.update(SQL,age,id); 
        System.out.println("Updated Record with ID = " + id ); 
        return;
    }
}

主类

import java.util.List;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.jdbc.core.JdbcTemplate;
@SpringBootApplication
public class StartApplication implements CommandLineRunner { 
    private static final Logger log = LoggerFactory.getLogger(StartApplication.class);
    @Autowired 
    JdbcTemplate jdbcTemplate;
    @Autowired
    KlientJDBCTemplate klientJDBCTemplate ;
    public static void main(String[] args) {
        SpringApplication.run(StartApplication.class,args);
    }
    @Override
    public void run(String... args) {
        System.out.println("StartApplication..."); 
        log.info("StartApplication...");
        startCustomerApp();
    }
    void startCustomerApp() {
        System.out.println("------Wstawianie rekordów z danymi--------" );
        log.info("------Wstawianie rekordów z danymi--------"); 
        klientJDBCTemplate.insert("Adam",11); 
        klientJDBCTemplate.insert("Jan",2); 
        klientJDBCTemplate.insert("Robert",15);
        System.out.println("------Lista wielu rekordow--------" ); 
        log.info("------Lista wielu rekordow--------"); 
        List<Klient> klienci = klientJDBCTemplate.listaKlientow();
        for (Klient record : klienci) {
            System.out.print("ID : " + record.getId() ); 
            System.out.print(",Name : " + record.getName() ); 
            System.out.println(",Age : " + record.getAge() );
        }
        System.out.println("---- Modyfikacja wiersza z ID = 2 -----" );
        log.info("------ Modyfikacja wiersza z ID = 2 --------"); 
        klientJDBCTemplate.update(2,20);
        System.out.println("----Wylistowanie wiersza z ID = 2 -----" );
        log.info("------ Wylistowanie wiersza z ID = 2 --------"); 
        Klient klient = klientJDBCTemplate.findByid(2); System.out.print("ID : " + klient.getId() ); 
        System.out.print(",Name : " + klient.getName() ); System.out.println(",Age : " + klient.getAge());
            jdbcTemplate.execute("DROP TABLE klient IF EXISTS");
            jdbcTemplate.execute("CREATE TABLE klient(" + "id INTEGER,name VARCHAR(100),age INTEGER)");
    } 
}

application.properties

spring.datasource.url=jdbc:mysql://localhost:3306/Kontakty
spring.datasource.username=springuser
spring.datasource.password=ThePassword

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>2.5.1</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.jd.springdata.product</groupId>
    <artifactId>lekcja8</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>lekcja8</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>11</java.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</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.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>
</project>

有人可以帮助我吗？