SpringBoot利用jdbcTemplate连接数据库
1.导入依赖包
xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<scope>runtime</scope>
</dependency>
2.配置数据库连接
yml
spring:
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql:///user
username: root
password: root
3.在类中注入JdbcTemplate
java
@Autowired
private JdbcTemplate jdbcTemplate;
利用JdbcTemplate实现创建表:
java
// 使用jdbcTemplate创建表
@GetMapping("createTable")
public String createTable() {
String sql=
"CREATE TABLE `student`(\n"+
"`id` INT(11) NOT NULL,\n"+
"`student_name` VARCHAR(20) NOT NULL,\n"+
"`student_age` INT(11) NOT NULL,\n"+
"PRIMARY KEY (`id`)\n"+
") ENGINE=InnoDB;";
jdbcTemplate.execute(sql);
return "success";
}
插入数据:
java
//使用jdbcTemplate保存数据
@GetMapping("saveStudent")
public String saveStudent() {
String sql=
"insert into student(id,student_name,student_age) values(2,'xiaoh',25)";
jdbcTemplate.update(sql);
return "success";
}
更新数据:
java
//使用jdbcTemplate修改数据
@GetMapping("updateStudent")
public String updateStudent(int id,String student_name) {
String sql=
"update student set student_name=? where id=?";
jdbcTemplate.update(sql,student_name,id);
return "success";
}
删除数据:
java
//使用jdbcTemplate删除数据
@GetMapping("deleteStudent")
public String deleteStudent(int id) {
String sql=
"delete from student where id=?";
jdbcTemplate.update(sql,id);
return "success";
}