2、springboot整合mybatis

程序员文章站 2024-01-26 15:34:28

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springboot配置数据库连接池druid

新建springboot项目

配置application.yml


server:
  port: 80
  servlet:
    context-path: /

spring:
  datasource:
    #1.JDBC
    type: com.alibaba.druid.pool.DruidDataSource
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://localhost:3306/t226_layui?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC
    username: root
    password: 123
    druid:
      #2.连接池配置
      #初始化连接池的连接数量 大小，最小，最大
      initial-size: 5
      min-idle: 5
      max-active: 20
      #配置获取连接等待超时的时间
      max-wait: 60000
      #配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒
      time-between-eviction-runs-millis: 60000
      # 配置一个连接在池中最小生存的时间，单位是毫秒
      min-evictable-idle-time-millis: 30000
      validation-query: SELECT 1 FROM DUAL
      test-while-idle: true
      test-on-borrow: true
      test-on-return: false
      # 是否缓存preparedStatement，也就是PSCache  官方建议MySQL下建议关闭   个人建议如果想用SQL防火墙 建议打开
      pool-prepared-statements: true
      max-pool-prepared-statement-per-connection-size: 20
      # 配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙
      filter:
        stat:
          merge-sql: true
          slow-sql-millis: 5000
      #3.基础监控配置
      web-stat-filter:
        enabled: true
        url-pattern: /*
        #设置不统计哪些URL
        exclusions: "*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*"
        session-stat-enable: true
        session-stat-max-count: 100
      stat-view-servlet:
        enabled: true
        url-pattern: /druid/*
        reset-enable: true
        #设置监控页面的登录名和密码
        login-username: admin
        login-password: admin
        allow: 127.0.0.1
        #deny: 192.168.1.100


#pagehelper分页插件配置
pagehelper:
  helperDialect: mysql
  reasonable: true
  supportMethodsArguments: true
  params: count=countSql

#显示日志
logging:
  level:
    com.liuxia.springboot02.mapper: debug

HelloController

package com.liuxia.springboot02.controller;

import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 *
 */
@RestController
@RequestMapping("/demo")
public class HelloController {

    @RequestMapping("/say1")
    public String say1(){
        return "说活1";
    }

    @RequestMapping("/say2")
    public String say2(){
        try {
            Thread.sleep(2000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "说活2";
    }

    @RequestMapping("/say3")
    public String say3(){
        try {
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "说活3";
    }

}

springboot整合mybatis

springboot整合mybatis逆向生成插件

相关pom依赖

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${mysql.version}</version>
    <scope>runtime</scope>
</dependency>

<resources>
    <!--解决mybatis-generator-maven-plugin运行时没有将XxxMapper.xml文件放入target文件夹的问题-->
    <resource>
        <directory>src/main/java</directory>
        <includes>
            <include>**/*.xml</include>
        </includes>
    </resource>
    <!--解决mybatis-generator-maven-plugin运行时没有将jdbc.properites文件放入target文件夹的问题-->
    <resource>
        <directory>src/main/resources</directory>
        <includes>
            <include>*.properties</include>
            <include>*.xml</include>
            <include>*.yml</include>
        </includes>
    </resource>
</resources>

<plugin>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-maven-plugin</artifactId>
    <version>1.3.2</version>
    <dependencies>
        <!--使用Mybatis-generator插件不能使用太高版本的mysql驱动 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
    </dependencies>
    <configuration>
        <overwrite>true</overwrite>
    </configuration>
</plugin>

Springboot02Applicatio

package com.liuxia.springboot02;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.EnableAspectJAutoProxy;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@MapperScan("com.liuxia.springboot02.mapper")
@EnableTransactionManagement
@EnableAspectJAutoProxy
@SpringBootApplication
public class Springboot02Application {

    public static void main(String[] args) {
        SpringApplication.run(Springboot02Application.class, args);
    }

}

BookServiceImplTest

package com.liuxia.springboot02.service.impl;
import com.liuxia.springboot02.entity.Book;
import com.liuxia.springboot02.service.BookService;
import com.liuxia.springboot02.utils.PageBean;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

@SpringBootTest
public class BookServiceImplTest {
    @Autowired
    private BookService bookService;

    @Test
    public void deleteByPrimaryKey() {
     bookService.deleteByPrimaryKey(21);
    }

    @Test
    public void selectByPrimaryKey() {
        System.out.println(bookService.selectByPrimaryKey(16));
    }

    @Test
    public void listPage() {
        Book book = new Book();
        book.setBname("%十里桃花%");
        PageBean pageBean = new PageBean();
        pageBean.setPage(2);
        for (Book book1 : bookService.listPage(book,pageBean)) {
            System.out.println(book1);
        }

    }




}

springboot整合pagehelper

导入相关pom依赖

<dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.3</version>
        </dependency>

BookMapper


package com.liuxia.springboot02.mapper;

import com.liuxia.springboot02.entity.Book;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface BookMapper {
    int deleteByPrimaryKey(Integer bid);

    Book selectByPrimaryKey(Integer bid);

   List<Book> listPage(Book book);

}

BookMapper.xml

 <select id="listPage" resultType="com.liuxia.springboot02.entity.Book" parameterType="com.liuxia.springboot02.entity.Book" >
    select
    <include refid="Base_Column_List" />
    from t_mvc_book
    <where>
      <if test="bname != null and bname !=''">
        and bname like #{bname}
      </if>


    </where>
  </select>

PagerAspect


package com.liuxia.springboot02.aspect;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.liuxia.springboot02.utils.PageBean;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.stereotype.Component;

import java.util.List;

@Component
@Aspect
public class PagerAspect {

    @Around("execution(* *..*Service.*Pager(..))")
    public Object invoke(ProceedingJoinPoint args) throws Throwable{
        Object[] params = args.getArgs();
        PageBean pageBean = null;
        for (Object param : params) {
            if(param instanceof PageBean){
                pageBean = (PageBean) param;
                break;
            }
        }

        if (pageBean !=null && pageBean.isPagination())
        PageHelper.startPage(pageBean.getPage(),pageBean.getRows());

        Object proceed = args.proceed(params);

        if (pageBean !=null && pageBean.isPagination()){
            PageInfo pageInfo = new PageInfo((List)proceed);
            pageBean.setTotal(pageInfo.getTotal()+"");
        }
        return proceed;
    }
}

service层

package com.liuxia.springboot02.service;

import com.liuxia.springboot02.entity.Book;
import com.liuxia.springboot02.utils.PageBean;

import java.util.List;

public interface BookService {
    int deleteByPrimaryKey(Integer bid);
    Book selectByPrimaryKey(Integer bid);
    List<Book> listPage(Book book, PageBean pageBean);


}

测试类

 @Test
    public void listPage() {
        Book book = new Book();
        book.setBname("%十里桃花%");
        PageBean pageBean = new PageBean();
        pageBean.setPage(2);
        for (Book book1 : bookService.listPage(book,pageBean)) {
            System.out.println(book1);
        }

2、springboot整合mybatis

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2、springboot整合mybatis

目录：

springboot配置数据库连接池druid

新建springboot项目

相关pom依赖

配置application.yml

HelloController

springboot整合mybatis

相关pom依赖

springboot整合pagehelper

BookMapper

PagerAspect

测试类

2、springboot整合mybatis

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