Redis框架如何搭建SpringBoot2.X-四川平武建站

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Redis框架如何搭建SpringBoot2.X

這篇文章主要介紹redis框架如何搭建SpringBoot2.X，文中介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們一定要看完！

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一、使用Spring Initializr創(chuàng)建項目web項目

1、File→New→Project

Redis框架如何搭建SpringBoot2.X

2、點擊Next如圖所示，命名好Group和Artifact

Redis框架如何搭建SpringBoot2.X

3、Next后如圖所示，勾選中需要的依賴，Spring Initializr會自動導入所需的starter

Redis框架如何搭建SpringBoot2.X

4、創(chuàng)建項目成功后，pom.xml文件中的依賴如下



	4.0.0
	
		org.springframework.boot
		spring-boot-starter-parent
		2.2.2.RELEASE
		 
	
	com.heny
	spring-boot-redis
	0.0.1-SNAPSHOT
	spring-boot-redis
	Demo project for Spring Boot

	
		1.8
	

	
		
			org.springframework.boot
			spring-boot-starter-web
		
		
			org.mybatis.spring.boot
			mybatis-spring-boot-starter
			2.1.1
		

		
			MySQL
			mysql-connector-java
			runtime
		
		
			org.springframework.boot
			spring-boot-starter-test
			test
			
				
					org.junit.vintage
					junit-vintage-engine
				
			
		
	

	
		
			
				org.springframework.boot
				spring-boot-maven-plugin

5、在pom.xml文件中添加redis的starter


		org.springframework.boot
		spring-boot-starter-data-redis

6、創(chuàng)建JavaBean用于封裝數(shù)據(jù)庫數(shù)據(jù)，需要實現(xiàn)Serializable

package com.henya.springboot.bean;

import java.io.Serializable;

public class Employee implements Serializable{
	
	private Integer id;
	private String lastName;
	private String email;
	private Integer gender; //性別 1男 0女
	private Integer dId;
	
	
	public Employee() {
		super();
	}

	
	public Employee(Integer id, String lastName, String email, Integer gender, Integer dId) {
		super();
		this.id = id;
		this.lastName = lastName;
		this.email = email;
		this.gender = gender;
		this.dId = dId;
	}
	
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getLastName() {
		return lastName;
	}
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
	public String getEmail() {
		return email;
	}
	public void setEmail(String email) {
		this.email = email;
	}
	public Integer getGender() {
		return gender;
	}
	public void setGender(Integer gender) {
		this.gender = gender;
	}
	public Integer getdId() {
		return dId;
	}
	public void setdId(Integer dId) {
		this.dId = dId;
	}
	@Override
	public String toString() {
		return "Employee [id=" + id + ", lastName=" + lastName + ", email=" + email + ", gender=" + gender + ", dId="
				+ dId + "]";
	}
}

注意：
在寫JavaBean對象時需要實現(xiàn)Serializable接口否則會報以下錯誤：

Cannot deserialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException

7、整合Mybatis操作數(shù)據(jù)庫，在application.properties配置文件中配置數(shù)據(jù)源信息

#serverTimezone用于指定時區(qū)，不然會報錯
spring.datasource.url=jdbc:mysql://localhost:3306/cache?serverTimezone=UTC
spring.datasource.username=root
spring.datasource.password=123456

# 開啟駝峰命名法規(guī)則
mybatis.configuration.map-underscore-to-camel-case=true
#日志級別
logging.level.com.henya.springboot.mapper=debug

8、使用注解版Mybatis創(chuàng)建Mapper

package com.henya.springboot.mapper;


import com.henya.springboot.bean.Employee;
import org.apache.ibatis.annotations.*;

@Mapper
public interface EmployeeMapper {

 @Select("SELECT * FROM employee WHERE id=#{id}")
 public Employee getEmpById(Integer id);

 @Update("UPDATE employee SET lastName=#{lastName},email=#{email},gender=#{gender},d_id=#{dId} WHERE id=#{id}")
 public void updateEmp(Employee employee);

 @Delete("DELETE FROM emlpoyee WHERE id=#{id}")
 public void delEmpById(Integer id);

 @Insert("INSERT INTO employee(lastName, email, gender, d_id) VALUES (#{lastName}, #{email}, #{gender}, #{dId})")
 public Employee insertEmp(Employee employee);

 @Select("SELECT * FROM employee WHERE lastName=#{lastName}")
 public Employee getEmpByLastName(String lastName);
}

注意：
需要使用使用@MapperScan注解掃描Mapper所在的接口，只需要加在主程序類上即可。除此之外，還要使用@EnableCaching用于開啟緩存。

@MapperScan("com.henya.springboot.mapper")
@SpringBootApplication
@EnableCaching //開啟緩存
public class SpringBootRedisApplication {

	public static void main(String[] args) {
		SpringApplication.run(SpringBootRedisApplication.class, args);
	}
}

9、編寫Service類，用于訪問數(shù)據(jù)庫或redis緩存

package com.henya.springboot.service;
import com.henya.springboot.bean.Employee;
import com.henya.springboot.mapper.EmployeeMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.annotation.*;
import org.springframework.stereotype.Service;

@CacheConfig(cacheNames = "emp") //抽取緩存的公共配置
@Service
public class EmployeeService {
 @Autowired
 EmployeeMapper employeeMapper;

 /**
 * @param id
 * @return
 */
 @Cacheable(cacheNames = {"emp"},keyGenerator = "myKeyGenerator")
 public Employee getEmpById(Integer id) {
 System.err.println("開始查詢"+ id +"號員工");
 Employee employee = employeeMapper.getEmpById(id);
 return employee;
 }

 /**
 * @CachePut：既調(diào)用方法（這個方法必須要執(zhí)行），又更新緩存數(shù)據(jù)
 * @param employee
 * @return
 */
 @CachePut(value = "emp",key = "#result.id")
 public Employee updateEmp(Employee employee){
 System.err.println("開始更新" + employee.getId() + "號員工");
 employeeMapper.updateEmp(employee);
 return employee;
 }

 /**
 * @CacheEvict：緩存清除
 * @param id
 */
 @CacheEvict(value = "emp",beforeInvocation = true)
 public void deleteEmp(Integer id){
 System.err.println("刪除" + id + "員工");
 int i = 10/0;
 }

10、編寫Controller類

package com.henya.springboot.controller;


import com.henya.springboot.bean.Employee;
import com.henya.springboot.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

/**
 * @Description:
 * @Author：HenYa
 * @CreatTime：2019/12/1 12:44
 */
@RestController
public class EmployeeController {
 @Autowired
 EmployeeService employeeService;

 @GetMapping("/emp/{id}")
 public Employee getEmpById(@PathVariable("id") Integer id){
 Employee employee = employeeService.getEmpById(id);
 return employee;
 }

 @GetMapping("/emp")
 public Employee updateEmp(Employee employee){
 Employee emp = employeeService.updateEmp(employee);
 return emp;
 }
}