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SpringBoot2.0 基础案例(10)：整合Mybatis框架,集成PageHelper分页
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‎README.md

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@@ -27,6 +27,9 @@ SpringBoot2.0 基础案例(08)：集成Redis数据库,实现缓存管理</a><br/
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<a href="https://mp.weixin.qq.com/s?__biz=MzU4Njg0MzYwNw==&mid=2247483840&idx=1&sn=f5f86033cc19859331bb120140051ce2&chksm=fdf45578ca83dc6eb40297b148001c1cb72820924fbfd7df8715979b6a6d6eb843f64de03b9e&token=935921302&lang=zh_CN#rd">
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SpringBoot2.0 基础案例(09)：集成JPA持久层框架,简化数据库操作</a><br/>
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<a href="">
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SpringBoot2.0 基础案例(10)：整合Mybatis框架,集成PageHelper分页</a><br/>
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持续更新...<br/>
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# 项目简介

‎node10-boot-mybatis/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<!-- SpringBoot版本 -->
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starters</artifactId>
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<version>2.1.3.RELEASE</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.boot.mybatis</groupId>
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<artifactId>node10-boot-mybatis</artifactId>
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<packaging>jar</packaging>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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<!-- 数据库依赖 -->
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>5.1.21</version>
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</dependency>
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<dependency>
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<groupId>com.alibaba</groupId>
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<artifactId>druid-spring-boot-starter</artifactId>
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<version>1.1.13</version>
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</dependency>
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<!-- JDBC 依赖 -->
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-jdbc</artifactId>
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</dependency>
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<!-- mybatis依赖 -->
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<dependency>
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<groupId>org.mybatis.spring.boot</groupId>
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<artifactId>mybatis-spring-boot-starter</artifactId>
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<version>1.3.2</version>
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</dependency>
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<!-- mybatis的分页插件 -->
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<dependency>
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<groupId>com.github.pagehelper</groupId>
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<artifactId>pagehelper</artifactId>
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<version>4.1.6</version>
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</dependency>
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</dependencies>
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<!-- 项目构建 -->
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<build>
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<finalName>${project.artifactId}</finalName>
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<resources>
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<resource>
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<directory>src/main/resources</directory>
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<filtering>true</filtering>
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</resource>
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</resources>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>2.3.2</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎node10-boot-mybatis/src/main/java/com/boot/mybatis/MyBatisApplication.java

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package com.boot.mybatis;
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import org.mybatis.spring.annotation.MapperScan;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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@SpringBootApplication
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@MapperScan("com.boot.mybatis.mapper")
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public class MyBatisApplication {
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public static void main(String[] args) {
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SpringApplication.run(MyBatisApplication.class,args) ;
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}
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}

‎node10-boot-mybatis/src/main/java/com/boot/mybatis/config/DruidConfig.java

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package com.boot.mybatis.config;
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import com.alibaba.druid.pool.DruidDataSource;
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import com.alibaba.druid.support.http.StatViewServlet;
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import com.alibaba.druid.support.http.WebStatFilter;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.boot.web.servlet.FilterRegistrationBean;
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import org.springframework.boot.web.servlet.ServletRegistrationBean;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.jdbc.core.JdbcTemplate;
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/**
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* Druid数据库连接池配置文件
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*/
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@Configuration
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public class DruidConfig {
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private static final Logger logger = LoggerFactory.getLogger(DruidConfig.class);
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@Value("${spring.datasource.druid.url}")
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private String dbUrl;
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@Value("${spring.datasource.druid.username}")
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private String username;
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@Value("${spring.datasource.druid.password}")
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private String password;
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@Value("${spring.datasource.druid.driverClassName}")
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private String driverClassName;
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@Value("${spring.datasource.druid.initial-size}")
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private int initialSize;
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@Value("${spring.datasource.druid.max-active}")
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private int maxActive;
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@Value("${spring.datasource.druid.min-idle}")
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private int minIdle;
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@Value("${spring.datasource.druid.max-wait}")
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private int maxWait;
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@Value("${spring.datasource.druid.pool-prepared-statements}")
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private boolean poolPreparedStatements;
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@Value("${spring.datasource.druid.max-pool-prepared-statement-per-connection-size}")
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private int maxPoolPreparedStatementPerConnectionSize;
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@Value("${spring.datasource.druid.time-between-eviction-runs-millis}")
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private int timeBetweenEvictionRunsMillis;
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@Value("${spring.datasource.druid.min-evictable-idle-time-millis}")
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private int minEvictableIdleTimeMillis;
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@Value("${spring.datasource.druid.max-evictable-idle-time-millis}")
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private int maxEvictableIdleTimeMillis;
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@Value("${spring.datasource.druid.validation-query}")
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private String validationQuery;
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@Value("${spring.datasource.druid.test-while-idle}")
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private boolean testWhileIdle;
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@Value("${spring.datasource.druid.test-on-borrow}")
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private boolean testOnBorrow;
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@Value("${spring.datasource.druid.test-on-return}")
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private boolean testOnReturn;
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@Value("${spring.datasource.druid.filters}")
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private String filters;
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@Value("{spring.datasource.druid.connection-properties}")
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private String connectionProperties;
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/**
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* Druid 连接池配置
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*/
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@Bean //声明其为Bean实例
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public DruidDataSource dataSource() {
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DruidDataSource datasource = new DruidDataSource();
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datasource.setUrl(dbUrl);
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datasource.setUsername(username);
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datasource.setPassword(password);
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datasource.setDriverClassName(driverClassName);
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datasource.setInitialSize(initialSize);
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datasource.setMinIdle(minIdle);
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datasource.setMaxActive(maxActive);
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datasource.setMaxWait(maxWait);
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datasource.setTimeBetweenEvictionRunsMillis(timeBetweenEvictionRunsMillis);
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datasource.setMinEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
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datasource.setMaxEvictableIdleTimeMillis(minEvictableIdleTimeMillis);
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datasource.setValidationQuery(validationQuery);
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datasource.setTestWhileIdle(testWhileIdle);
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datasource.setTestOnBorrow(testOnBorrow);
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datasource.setTestOnReturn(testOnReturn);
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datasource.setPoolPreparedStatements(poolPreparedStatements);
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datasource.setMaxPoolPreparedStatementPerConnectionSize(maxPoolPreparedStatementPerConnectionSize);
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try {
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datasource.setFilters(filters);
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} catch (Exception e) {
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logger.error("druid configuration initialization filter", e);
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}
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datasource.setConnectionProperties(connectionProperties);
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return datasource;
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}
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/**
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* JDBC操作配置
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*/
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@Bean(name = "dataOneTemplate")
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public JdbcTemplate jdbcTemplate (@Autowired DruidDataSource dataSource){
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return new JdbcTemplate(dataSource) ;
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}
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/**
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* 配置 Druid 监控界面
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*/
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@Bean
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public ServletRegistrationBean statViewServlet(){
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ServletRegistrationBean srb =
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new ServletRegistrationBean(new StatViewServlet(),"/druid/*");
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//设置控制台管理用户
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srb.addInitParameter("loginUsername","root");
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srb.addInitParameter("loginPassword","root");
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//是否可以重置数据
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srb.addInitParameter("resetEnable","false");
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return srb;
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}
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@Bean
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public FilterRegistrationBean statFilter(){
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//创建过滤器
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FilterRegistrationBean frb =
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new FilterRegistrationBean(new WebStatFilter());
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//设置过滤器过滤路径
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frb.addUrlPatterns("/*");
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//忽略过滤的形式
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frb.addInitParameter("exclusions",
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"*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*");
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return frb;
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}
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}

‎node10-boot-mybatis/src/main/java/com/boot/mybatis/controller/ImgInfoController.java

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package com.boot.mybatis.controller;
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import com.boot.mybatis.entity.ImgInfo;
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import com.boot.mybatis.entity.ImgInfoExample;
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import com.boot.mybatis.service.ImgInfoService;
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import com.github.pagehelper.PageInfo;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import javax.annotation.Resource;
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import java.util.Date;
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import java.util.List;
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@RestController
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public class ImgInfoController {
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@Resource
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private ImgInfoService imgInfoService ;
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// 增加
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@RequestMapping("/insert")
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public int insert(){
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ImgInfo record = new ImgInfo() ;
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record.setUploadUserId("A123");
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record.setImgTitle("博文图片");
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record.setSystemType(1) ;
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record.setImgType(2);
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record.setImgUrl("https://avatars0.githubusercontent.com/u/50793885?s=460&v=4");
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record.setLinkUrl("https://avatars0.githubusercontent.com/u/50793885?s=460&v=4");
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record.setShowState(1);
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record.setCreateDate(new Date());
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record.setUpdateDate(record.getCreateDate());
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record.setRemark("知了");
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record.setbEnable("1");
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return imgInfoService.insert(record) ;
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}
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// 组合查询
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@RequestMapping("/selectByExample")
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public List<ImgInfo> selectByExample(){
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ImgInfoExample example = new ImgInfoExample() ;
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example.createCriteria().andRemarkEqualTo("知了") ;
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return imgInfoService.selectByExample(example);
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}
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// 修改
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@RequestMapping("/updateByPrimaryKeySelective")
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public int updateByPrimaryKeySelective(){
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ImgInfo record = new ImgInfo() ;
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record.setImgId(11);
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record.setRemark("知了一笑");
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return imgInfoService.updateByPrimaryKeySelective(record);
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}
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// 分页查询
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@RequestMapping("/queryPage")
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public PageInfo<ImgInfo> queryPage () {
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int page = 1;
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int pageSize = 6 ;
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return imgInfoService.queryPage(page,pageSize);
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}
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// 删除
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@RequestMapping("/deleteByPrimaryKey")
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public int deleteByPrimaryKey() {
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Integer imgId = 11 ;
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return imgInfoService.deleteByPrimaryKey(imgId);
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}
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}

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