[Architecture] Spring Boot JdbcTemplate use

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This link: https://blog.csdn.net/sinat_27933301/article/details/102315387

Spring operation of the database in Jdbc did a deeper package, and convenient tool for database operations JdbcTemplate Spring is provided. We can help JdbcTemplate to perform all database operations, such as insert, update, delete, and retrieve data from the database, and effectively avoid direct use of tedious coding Jdbc brings.

JdbcTemplate provides the following five types of methods:

method	DEFINITIONS
execute	It can be used to execute any SQL statement, typically used to execute DDL statements
update	For performing add, modify and delete statements
batchUpdate	For executing batch related statements
query and queryForXXX	Statement for executing queries related
call	To execute database stored procedures and functions related statements

1, rely on the introduction of JDBC

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-jdbc</artifactId>
    <version>2.0.6</version>
</dependency>

2、Java Bean

Lombok is used, it is by way of annotation, the compiler automatically generates attribute constructors, getter / setter, equals, hashcode, toString method.

@Data
public class Blog {
    private Integer blog;
    private Integer fans;
    private Integer likes;
    private Integer comments;
    private Integer pageview;
    private Integer integral;
    private Integer ranking;
    private Date createTime;
}

3, BlogController

@RestController
public class JdbcTest {

    @Resource
    private JdbcTemplate jdbcTemplate;

    @GetMapping("insertBlog")
    public int insertBlog(Blog blog){
        String sql = "insert into blog(blog,fans,likes,comments,pageview,integral,ranking,create_time) values(?,?,?,?,?,?,?,?)";
        return jdbcTemplate.update(sql, blog.getBlog(), blog.getFans(), blog.getLikes(), blog.getComments(), blog.getPageview(), blog.getIntegral(), blog.getRanking(),blog.getCreateTime());
    }
}

4, application.yml

#配置数据源
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/testdb?characterEncoding=utf8
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver

5, start the application, browser access

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6, view the results database

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