关于使用jdbcTemplate操作mysql数据库

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;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

@SpringBootApplication
public class RelationalDataAccessApplication implements CommandLineRunner {

  private static final Logger log = LoggerFactory.getLogger(RelationalDataAccessApplication.class);

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

  @Autowired
  JdbcTemplate jdbcTemplate;

  @SuppressWarnings("deprecation")
@Override
  public void run(String... strings) throws Exception {

    log.info("Creating tables");

    jdbcTemplate.execute("DROP TABLE IF EXISTS customers;");
    jdbcTemplate.execute("CREATE TABLE customers(" +
        "id SERIAL, first_name VARCHAR(255), last_name VARCHAR(255))");

    // Split up the array of whole names into an array of first/last names
    List<Object[]> splitUpNames = Arrays.asList("John Woo", "Jeff Dean", "Josh Bloch", "Josh Long").stream()
        .map(name -> name.split(" "))
        .collect(Collectors.toList());

    // Use a Java 8 stream to print out each tuple of the list
    splitUpNames.forEach(name -> log.info(String.format("Inserting customer record for %s %s", name[0], name[1])));

    // Uses JdbcTemplate's batchUpdate operation to bulk load data
    jdbcTemplate.batchUpdate("INSERT INTO customers(first_name, last_name) VALUES (?,?)", splitUpNames);

    log.info("Querying for customer records where first_name = 'Josh':");
    jdbcTemplate.query(
        "SELECT id, first_name, last_name FROM customers WHERE first_name = ?",
        new Object[] { "Josh" },
        (rs, rowNum) -> new Customer(rs.getLong("id"), rs.getString("first_name"), rs.getString("last_name"))
    ).forEach(customer -> log.info(customer.toString()));
  }
}

pom.xml -->依赖

<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>4.0.0modelVersion>
	<parent>
		<groupId>org.springframework.bootgroupId>
		<artifactId>spring-boot-starter-parentartifactId>
		<version>2.5.2version>
		<relativePath /> 
	parent>
	<groupId>com.examplegroupId>
	<artifactId>rest-service-completeartifactId>
	<version>0.0.1-SNAPSHOTversion>
	<name>rest-service-completename>
	<description>Demo project for Spring Bootdescription>
	<properties>
		<java.version>1.8java.version>
	properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.bootgroupId>
			<artifactId>spring-boot-starter-webartifactId>
		dependency>

		<dependency>
			<groupId>org.springframework.bootgroupId>
			<artifactId>spring-boot-starter-testartifactId>
			<scope>testscope>
		dependency>

		<dependency>
			<groupId>org.awaitilitygroupId>
			<artifactId>awaitilityartifactId>
			
			<scope>testscope>
		dependency>



		<dependency>
			<groupId>org.springframework.bootgroupId>
			<artifactId>spring-boot-starter-jdbcartifactId>
		dependency>

		<dependency>
			<groupId>com.h2databasegroupId>
			<artifactId>h2artifactId>
			<scope>runtimescope>
		dependency>
		
		<dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
		dependency>

	dependencies>

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

project>

配置文件(src/main/resources/application.yaml)：

spring:
  datasource:
    username: root
    password: 密码
    url: jdbc:mysql://127.0.0.1/数据库名称?characterEncoding=utf-8&serverTimezone=GMT%2b8
    driver-class-name: com.mysql.cj.jdbc.Driver

参考自：springboot教程