文章目錄

引言

既然要學習mybats，環境是必須的了。單獨學習mybatis，對於Java開發者來看已經沒有太大的意義，因此本次搭建的環境是 spring + mybatis。

開發工具

idea 2018.2.4 x64
MySQL
jdk1.8
win10

框架

mybatis3.4.1
spring 4.3.5.RELEASE

搭建過程

建工程

建立webapp工程
項目引入之後等待maven構建完成，maven的結構通常不是標準開發目錄結構，因此我們要新建目錄
1. 在main目錄下新建java和resources文件夾。
2. 需要給這些目錄加上對應的標識，簡單的方式是：右擊項目
選中maven確認即可

引入包（可以逐個加入看效果）

從給出的pom文件(見附錄pom)中複製需要的jar信息內容到你的pom文件。
新建spring需要的.xml文件
- applicationContext.xml
  - 配置自動包掃描： <context:component-scan base-package=“com.sswh”/>
  - mvc註解驅動： mvc:annotation-driven/
  - mvc靜態資源訪問：mvc:default-servlet-handler/
  - 創建數據源：com.mchange.v2.c3p0.ComboPooledDataSource
  - mybatis管理類：org.mybatis.spring.SqlSessionFactoryBean
  - mybatis映射類：org.mybatis.spring.mapper.MapperScannerConfigurer
  - 事務管理：org.springframework.jdbc.datasource.DataSourceTransactionManager
  - 配置基於事務管理的註解驅動:
    <tx:annotation-driven transaction-manager=“transactionManager”/>
  - 配置前綴後綴:org.springframework.web.servlet.view.InternalResourceViewResolver
新建mybatsi需要的.xml文件
- sqlMapperConfig.xml 該類在集成spring之後需要配置的很少
- *mapperDao.xml :該配置文件用於寫業務的sql。用於實現業務的接口。
  SqlSessionFactoryBean 的屬性包含掃描位置的路徑變量mapperLocations：

啓動

建如下的測試文件
Application.java

package com.sswh;

import org.apache.ibatis.io.ResolverUtil;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * Created by xxx
 */
public class Application {


    public static void main(String[] args) {

        ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        BaseEntity baseEntity = (BaseEntity)ac.getBean("baseEntity");
        baseEntity.setName("name");
        String name = baseEntity.getName();
        String test = test(baseEntity.getName());
        int b = 0;
        for(int i=0;i<100;i++){
            System.out.println("I:"+i);
            b = i;
            int c = 10;
        }

        System.out.println(test);


    }
    public static String test(String name){
        return "fix:"+name;
    }

}

BaseDao.java

package com.sswh;

/**
 * Created by xxx
 */
public class BaseDao {


}

BaseEntity.java

package com.sswh;

/**
 * Created by xxx
 */
public class BaseEntity {
    private int id;
    private String name;

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

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

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">


    <!-- 組件掃描 -->
    <context:component-scan base-package="com.sswh"/>

    <!-- mvc的註解驅動 -->
    <mvc:annotation-driven/>

    <!-- mvc靜態資源的訪問 -->
    <mvc:default-servlet-handler/>

    <!-- 加載db.properties配置文件 -->
    <!-- <context:property-placeholder location="classpath:db.properties"/> -->

    <!-- 創建數據源 c3p0 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql://localhost:3306/easybuy"/>
        <property name="user" value="root"/>
        <property name="password" value="aaron"/>
    </bean>

    <!-- 創建mybaits的sqlSessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="mapperLocations" value="classpath*:com/sswh/**/*Dao.xml"/>
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <bean id="baseEntity" class="com.sswh.BaseEntity"></bean>
    <bean id="baseDao" class="com.sswh.BaseDao"></bean>
</beans>

baseDao.xml mybatis接口實現

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
#namespace 一定要對應上,否則啓動報錯
<mapper namespace="com.sswh.BaseDao">

</mapper>

檢查

檢查xml文件的配置路徑是否正確
檢查包的導入情況

結語

以上就可以順利的跑起一個spring mybatis的基本模塊了。2019年2月1日 13:22:53

附錄

pom

<?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.sswh</groupId>
  <artifactId>mybatis</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>mybatis Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <!-- spring版本號 -->
    <spring.version>4.3.5.RELEASE</spring.version>
    <!-- mybatis版本號 -->
    <mybatis.version>3.4.1</mybatis.version>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>${spring.version}</version>
      </dependency>

      <!-- Spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>${spring.version}</version>
      </dependency>
    <!-- 數據庫 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.41</version>
      <scope>runtime</scope>
    </dependency>


    <!-- 數據庫連接池 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <!-- MyBatis -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>

    <!-- mybatis/spring整合包 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>


  </dependencies>

  <build>
    <finalName>mybatis</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

mybatis_基礎環境搭建（一）

文章目錄

引言

開發工具

框架

搭建過程

建工程

引入包（可以逐個加入看效果）

啓動

檢查

結語

附錄

pom

如何使用 JS 判斷用戶是否處於活躍狀態

通過HPA+CronHPA組合應對業務複雜彈性伸縮場景

❤️‍🔥 Solon Cloud Event 新的事務特性與應用

slf4j結合log4j使用

PTA最大子列和

linux安裝jdk

spring-mybatis項目中打印完整sql不帶佔位符

mybatis_基礎環境搭建（一）

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結