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记录一下IDEA 构建简单spring boot的web项目(springmvc+mybatis[mysql]+freemaker)的过程
1、项目整体目录
2、pom.xml 添加依赖
<?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.example</groupId> <artifactId>my-ssm-web</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>my-ssm-web</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.6.RELEASE</version> <relativePath/> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- mybatis支持 --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.3.2</version> </dependency> <!-- mysql驱动包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <!-- 阿里巴巴数据源 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.18</version> </dependency> <!-- freemarker支持 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-freemarker</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
3、application.properties配置
#数据源配置 spring.datasource.url=jdbc:mysql://localhost:3306/test spring.datasource.username=root spring.datasource.password=123456 spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.type=com.alibaba.druid.pool.DruidDataSource # Mybatis 映射配置 mybatis.typeAliasesPackage=com.example.demo.Domain mybatis.mapperLocations=classpath:mapper/*.xml #freemarker配置 spring.freemarker.allow-request-override=false spring.freemarker.cache=true spring.freemarker.check-template-location=true spring.freemarker.charset=UTF-8 spring.freemarker.content-type=text/html spring.freemarker.expose-request-attributes=false spring.freemarker.expose-session-attributes=false spring.freemarker.expose-spring-macro-helpers=false spring.freemarker.prefix=/ spring.freemarker.suffix=.html spring.freemarker.template-loader-path=classpath:/templates/
4、实体类
package com.example.demo.Domain; import org.springframework.stereotype.Component; @Component public class Student { 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; } }
5、Dao
package com.example.demo.Dao; import com.example.demo.Domain.Student; public interface StudentMapper { int insert(Student record); Student selectById(Integer id); }
6、mybatis映射文件
<?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" > <mapper namespace="com.example.demo.Dao.StudentMapper" > <resultMap id="BaseResultMap" type="com.example.demo.Domain.Student" > <result column="name" property="name" jdbcType="VARCHAR" /> <result column="id" property="id" jdbcType="INTEGER" /> </resultMap> <insert id="insert" parameterType="com.example.demo.Domain.Student" > insert into user (username,id) values (#{username,jdbcType=VARCHAR}, #{id,jdbcType=INTEGER}) </insert> <select id="selectById" parameterType="java.lang.Integer" resultType="com.example.demo.Domain.Student" > select * from student where id = #{id,jdbcType=INTEGER} </select> </mapper>
7、service
package com.example.demo.Service; import com.example.demo.Domain.Student; public interface StudentService { int insert(Student record); Student selectById(Integer id); }
8、serviceImpl
package com.example.demo.Service.Impl; import com.example.demo.Dao.StudentMapper; import com.example.demo.Domain.Student; import com.example.demo.Service.StudentService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; @Service public class StudentServiceImpl implements StudentService { @Autowired private StudentMapper studentMapper; @Override public int insert(Student record) { return studentMapper.insert(record); } @Override public Student selectById(Integer id) { return studentMapper.selectById(id); } }
9、启动类,添加扫描dao包
package com.example.demo; import org.mybatis.spring.annotation.MapperScan; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication @MapperScan("com.example.demo.Dao") //此次若不定义MapperScan,也可以在dao类添加@Component和@Mapper两个注解 public class MySsmWebApplication { public static void main(String[] args) { SpringApplication.run(MySsmWebApplication.class, args); } }
10、index页面简单的展示,因为使用了freemaker,所以能用freemaker表达式获取后端ModelAndView传递的参数
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <h1>hi ${name}</h1> </body> </html>