Spring Boot中的JdbcTemplate与MySQL集成

  1. 创建一个简单的Spring Boot项目。

2. 配置项目的依赖，包括Spring Boot和MySQL连接驱动 

<?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>3.1.5</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.example</groupId>
	<artifactId>demo1114</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>demo0310164</name>
	<description>demo0310164</description>
	<properties>
		<java.version>17</java.version>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
			<scope>runtime</scope>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</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-devtools</artifactId>
			<scope>runtime</scope>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<optional>true</optional>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>


		<dependency>
			<groupId>com.mysql</groupId>
			<artifactId>mysql-connector-j</artifactId>
			<version>8.0.33</version>
		</dependency>

		<dependency>
			<groupId>com.baomidou</groupId>
			<artifactId>mybatis-plus-boot-starter</artifactId>
			<version>3.5.3.1</version>
		</dependency>
		<!--<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>3.1.2</version>
        </dependency>-->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-thymeleaf</artifactId>
		</dependency>
		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>bootstrap</artifactId>
			<version>5.3.0</version>
		</dependency>
		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>jquery</artifactId>
			<version>3.6.4</version>
		</dependency>
		<dependency>
			<groupId>org.webjars</groupId>
			<artifactId>webjars-locator-core</artifactId>
		</dependency>


		<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>3.0.2</version>
		</dependency>

		<dependency>
			<groupId>com.mysql</groupId>
			<artifactId>mysql-connector-j</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.tomcat.embed</groupId>
			<artifactId>tomcat-embed-core</artifactId>
			<version>10.1.13</version>
		</dependency>











	</dependencies>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<excludes>
						<exclude>
							<groupId>org.projectlombok</groupId>
							<artifactId>lombok</artifactId>
						</exclude>
					</excludes>
				</configuration>
			</plugin>
		</plugins>
	</build>

</project>

3. 使用JdbcTemplate创建一个MySQL数据库，并设计一个适当的数据表。

4. 编写Spring Boot的配置文件，配置JdbcTemplate与MySQL的连接信息。 

5. 在项目中创建一个DAO类，使用JdbcTemplate完成对数据库的增删改查操作。 

 使用JdbcTemplate完成对数据库的增删改查操作。

@Service
public class UserDao {
    JdbcTemplate template;

    @Autowired
    public UserDao(JdbcTemplate template) {
        this.template = template;
    }

    public List<User> getAll() {
        String sql = "select * from user";
        return template.query(sql, (rs, rowNum) -> {
            User entity = new User();
            entity.setId(rs.getInt("id"));
            entity.setName(rs.getString("name"));
            return entity;
        });
    }

    //根据id获取用户信息
    public User getById(Integer id) {
        String sql = "select * from user where id=?";
        return template.queryForObject(sql, new Object[]{id},
                new BeanPropertyRowMapper<>(User.class));
    }

    //增加数据
    public int add(User entity) {
        String sql = "insert into user(name) values(?)";
        return template.update(sql, entity.getName());
    }

    //修改数据
    public int update(User entity) {
        String sql = "update user set name=? where id=?";
        return template.update(sql, entity.getName(), entity.getId());
    }

    //删除数据
    public int delete(Integer id) {
        String sql = "delete from user where id=?";
        return template.update(sql, id);
    }
}
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版权声明：本文为CSDN博主「塔塔开786」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https:///2202_75349739/article/details/133444311

6. 在项目中创建一个Controller类，提供相应的接口访问数据库操作

7. 实现以下功能：

   - 插入一条数据到数据库。

   - 查询数据库中的所有数据。

   - 根据条件查询数据库中的数据。

   - 更新数据库中的数据。

   - 删除数据库中的数据。