本文介紹 SpringBoot 連接示例。
環(huán)境配置
JDK1.8 和 OceanBase 3.x(MySQL 模式)
示例代碼
Pom.xml 文件
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.alipay.test</groupId>
<artifactId>SpringBootMySQLJPA</artifactId>
<version>1.0-SNAPSHOT</version>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<artifactId>spring-boot-starter-json</artifactId>
<groupId>org.springframework.boot</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.25</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.8.5</version>
</dependency>
</dependencies>
</project>
application.yml 文件
server:
port: 8081
spring:
jpa:
database: mysql
show-sql: true
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://xxx.xxx.xxx.xxx:3306/test?characterEncoding=UTF-8
username: a****
password: ******
#spring.jpa.hibernate.ddl-auto=update
jackson:
serialization:
indent_output: true
測試類
相關(guān)代碼如下:
package com.alipay;
import javax.persistence.*;
import java.io.Serializable;
import java.sql.Date;
/** CREATE TABLE A(id integer, flightNo varchar2(50))**/
@Entity
@Table( name = "A" )
public class A implements Serializable {
public Integer getFlightId() {
return flightId;
}
public void setFlightId(Integer flightId) {
this.flightId = flightId;
}
public String getFlightNo() {
return flightNo;
}
public void setFlightNo(String flightNo) {
this.flightNo = flightNo;
}
@Id
// @GeneratedValue
@Column(name = "id")
private Integer flightId;
@Column( name = "flightNo" )
private String flightNo;
}
package com.alipay;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface AMapper extends JpaRepository<A, Integer> {
}
package com.alipay;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.Optional;
@RestController
@RequestMapping("/")
public class Test {
@Autowired
private AMapper a;
@GetMapping("/{id}")
public String getOne(@PathVariable int id) {
Optional<A> obj = a.findById(id);
String result = "A.id is:" + obj.get().getFlightId() + ", no is :" + obj.get().getFlightNo();
System.out.println(result);
return result;
}
}
package com.alipay;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class App
{
public static void main( String[] args )
{
SpringApplication.run(App.class, args);
}
}
運(yùn)行上面的代碼,返回如下日志則表示啟動成功。
然后通過 http://localhost:8081/xxxxx
就可以訪問數(shù)據(jù)庫,xxxxx
就是對應(yīng)的數(shù)據(jù)庫 id
字段,如果數(shù)據(jù)庫存在就可以查詢到結(jié)果。
- 本页导读 (0)
- 環(huán)境配置
- 示例代碼
- Pom.xml 文件
- application.yml 文件
- 測試類
文档内容是否对您有帮助?