springboot + mybatis +druid

Posted 2020-10-19 uptothesky

Druid Spring Boot Starter

mybatis-spring-boot-autoconfigure

mybatis-spring-boot-samples

新建spring boot工程，添加pom依赖

<dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.1</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.6</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

View Code

新增User类

public class User {
    private Integer id;
    private String name;
    private Integer sex;
    private Integer age;

    public User(String name, Integer sex, Integer age) {
        this.name = name;
        this.sex = sex;
        this.age = age;
    }

    public User(Integer id, String name, Integer sex, Integer age) {
        this.id = id;
        this.name = name;
        this.sex = sex;
        this.age = age;
    }

    public User() {
    }

    public Integer getId() {

        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getSex() {
        return sex;
    }

    public void setSex(Integer sex) {
        this.sex = sex;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }
}

View Code

新增UserMapper接口

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

@Mapper
public interface UserMapper {
    @Select("select * from person where id=#{id}")
    User findById(@Param("id") Integer id);
}

View Code

新增UserController

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {
    @Autowired
    UserMapper userMapper;

    @RequestMapping(value = "/hello",method = RequestMethod.GET)
    public String index() {
        User user=userMapper.findById(1);
        return user.getName();
    }
}

View Code

配置文件

spring.datasource.url= jdbc:mysql://192.168.31.146:3306/mydb
spring.datasource.username= root
spring.datasource.password= pass

spring.datasource.druid.url= jdbc:mysql://192.168.31.146:3306/mydb
spring.datasource.druid.username= root
spring.datasource.druid.password= pass

spring.datasource.druid.initial-size=5
spring.datasource.druid.max-active=20
spring.datasource.druid.min-idle=5
spring.datasource.druid.max-wait=60000
spring.datasource.druid.pool-prepared-statements=true
spring.datasource.druid.max-pool-prepared-statement-per-connection-size=20
#spring.datasource.druid.max-open-prepared-statements=
spring.datasource.druid.validation-query=select 1 from dual
#spring.datasource.druid.validation-query-timeout=
spring.datasource.druid.test-on-borrow=false
spring.datasource.druid.test-on-return=false
spring.datasource.druid.test-while-idle=true
spring.datasource.druid.time-between-eviction-runs-millis=60000
spring.datasource.druid.min-evictable-idle-time-millis=300000
#spring.datasource.druid.max-evictable-idle-time-millis=
#配置多个英文逗号分隔
spring.datasource.druid.filters=stat,wall,log4j

View Code

 

启动应用后打开浏览器：http://localhost:8080/druid/index.html

 

再打开：http://localhost:8080/hello

在druid界面查看sql