SpringBoot入门（二）

一、SpringBoot整合Junit

1.1 搭建SpringBoot工程

1.2 引入starter-test起步依赖

 <dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies>

1.3 编写类

@Service
public class UserService {public void show(){System.out.println("这是Service里面的show....");}}

1.4 测试

@RunWith(SpringRunner.class)
@SpringBootTest(classes = DemoJunitApplication.class )
public class UserServiceTest {@AutowiredUserService service;@Testpublic void test(){System.out.println(111);}@Testpublic void test1(){service.show();}
}

二、SpringBoot整合mybatis

2.1 搭建SpringBoot工程

2.2 引入mybatis起步依赖，添加驱动

<dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>2.1.0</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><!--<scope>runtime</scope>--></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><scope>test</scope></dependency>

2.3 编写DataSource和MyBatis相关配置

spring:datasource:url: jdbc:mysql://192.168.147.128:3306/springboot?serverTimezone=UTCusername: rootpassword: 123456driver-class-name: com.mysql.cj.jdbc.Driver

2.4 定义表和实体类

CREATE DATABASE `springboot` ;
USE `springboot`;CREATE TABLE `t_user` (`id` int(11) NOT NULL AUTO_INCREMENT,`username` varchar(32) COLLATE utf8mb4_unicode_ci DEFAULT NULL,`password` varchar(32) COLLATE utf8mb4_unicode_ci DEFAULT NULL,PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;insert  into `t_user`(`id`,`username`,`password`) values (1,'zhangsan','123'),(2,'lisi','234');

实体类

public class User {private int id;private String username;private String password;public int getId() {return id;}public void setId(int id) {this.id = id;}public String getUsername() {return username;}public void setUsername(String username) {this.username = username;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}@Overridepublic String toString() {return "User{" +"id=" + id +", username='" + username + '\'' +", password='" + password + '\'' +'}';}}

2.5 编写dao和mapper文件/纯注解开发

2.5.1 纯注解开发

@Mapper
@Repository
public interface UserMapper {@Select("select * from t_user")public List<User> findAll();
}

2.5.2 配置mapper文件

@Mapper
@Repository
public interface UserXmlMapper {public List<User> findAll();}

<?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="cn.study.mapper.UserXmlMapper"><select id="findAll" resultType="user">select * from t_user</select>
</mapper>

配置文件添加一些修改

mybatis:mapper-locations: classpath:mapper/*Mapper.xml # mapper映射文件路径type-aliases-package: cn.study.domain

2.6 测试

@SpringBootTest
@RunWith(SpringRunner.class)
public class DemoMybatisApplicationTests {@Autowiredprivate UserMapper userMapper;@Autowiredprivate UserXmlMapper userXmlMapper;@Testpublic void testFindAll() {List<User> list = userMapper.findAll();System.out.println(list);}@Testpublic void testFindAll2() {List<User> list = userXmlMapper.findAll();System.out.println(list);}}

三、SpringBoot整合redis

3.1 搭建SpringBoot工程

按照上一篇里面介绍的新建一个springboot项目或者是模块。

3.2 引入redis起步依赖

在pom.xml里面添加依赖

        <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency>

3.3 配置redis相关属性

在resource文件下，application.yml文件里面添加配置参数，如果文件不存在则新建

spring:redis:host: 127.0.0.1port: 6379

3.4 注入RedisTemplate模板

@Autowiredprivate RedisTemplate redisTemplate;

3.5 编写测试方法，测试

在测试文件夹下编写测试

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoRedisApplicationTests {@Autowiredprivate RedisTemplate redisTemplate;@Testpublic void testSet() {//存入数据redisTemplate.boundValueOps("name").set("zhangsan");}@Testpublic void testGet() {//获取数据Object name = redisTemplate.boundValueOps("name").get();System.out.println(name);}}