SSM框架整合

创建工程

新建一个web工程，其下的文件组织结构如下：

project                 
├─.idea
├─.mvn
├─src
   │  │  └─com
   │  │      └─yourname
   │  ├─resources
   │  └─webapp
   │      └─WEB-INF
   └─test
       ├─java
       └─resources

然后在pom.xml导入依赖坐标：

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>4.0.1</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>5.2.10.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.3.26</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>5.3.26</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.11</version>
</dependency>
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>2.1.0</version>
</dependency>
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.28</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.2.16</version>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13.2</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>2.13.5</version>
</dependency>

SSM整合

Spring配置

在com.yourname.config包下创建SpringConfig类:

@Configuration
@ComponentScan({"com.yourname.service"})
@PropertySource("jdbc.properties")
@Import({JdbcConfig.class, MybatisConfig.class})
public class SpringConfig {
}

MyBatis配置

在com.yourname.config包下创建MybatisConfig类:

package com.yourname.config;


import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.context.annotation.Bean;

import javax.sql.DataSource;

public class MybatisConfig {
    @Bean
    public SqlSessionFactoryBean sqlSessionFactory(DataSource dataSource) {
        SqlSessionFactoryBean factoryBean = new SqlSessionFactoryBean();
        factoryBean.setDataSource(dataSource);
        factoryBean.setTypeAliasesPackage("com.yourname.domain");
        return factoryBean;
    }

    @Bean
    public MapperScannerConfigurer mapperScannerConfigurer() {
        MapperScannerConfigurer scan = new MapperScannerConfigurer();
        scan.setBasePackage("com.yourname.dao");
        return scan;
    }
}

在resources文件夹下创建配置文件jdbc.properties:

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/your_database_name
jdbc.username=root
jdbc.password=password

在com.yourname.config包下创建JdbcConfig类:

package com.takune.config;

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;

import javax.sql.DataSource;

public class JdbcConfig {

    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String username;
    @Value("${jdbc.password}")
    private String password;

    @Bean
    public DataSource dataSource() {
        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setDriverClassName(driver);
        dataSource.setUrl(url);
        dataSource.setUsername(username);
        dataSource.setPassword(password);
        return dataSource;
    }
}

SpringMVC配置

在com.yourname.config包下创建ServletConfig类:

package com.takune.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class ServletConfig extends AbstractAnnotationConfigDispatcherServletInitializer {
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[]{SpringConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[]{SpringMvcConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }
}

在com.yourname.config包下创建SpringMvcConfig类:

package com.takune.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@Configuration
@ComponentScan({"com.takune.controller"})
@EnableWebMvc
public class SpringMvcConfig {
}

功能模块

表与实体类

使用如下指令创建book表:

create table book(
    id int not null auto_increment primary key ,
    name varchar(20) not null ,
    type varchar(20) not null ,
    description varchar(100) not null 
);

在com.yourname.config包下创建实体类Book:

package com.takune.domain;

public class Book {
    private Integer id;
    private String name;
    private String type;
    private String description;

    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 String getType() {
        return type;
    }

    public void setType(String type) {
        this.type = type;
    }

    public String getDescription() {
        return description;
    }

    public void setDescription(String description) {
        this.description = description;
    }
}

dao(接口+自动代理)

service(接口+实现类)

业务层接口测试(整合Junit)

controller

表现层接口测试(Postman)

创建SpringBoot项目

从零开始的SpringBoot项目

接下来我们将用IEDA从零开始创建一个新的SpringBoot项目。

首先点击新建项目，选择Spring Initializr, 给你的项目取一个合适的名字, 使用maven对项目进行管理, 选择合适的jdk版本, 如下图所示:

然后选择合适的SpringBoot版本和依赖包(这里我选了Spring Web和MySQL Driver, 可以根据实际需要进行选择):

依赖.png

到此为止我们就创建了一个SpringBoot项目!

Springboot学习