一、項目搭建

pom.xml

<?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>cn.x5456</groupId><artifactId>springBootDemo</artifactId><version>1.0-SNAPSHOT</version><!--從這開始拷貝--><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.4.0.RELEASE</version><relativePath /> <!-- lookup parent from repository --></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><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-devtools</artifactId></dependency><!--mybatis整合SpringBoot的jar包。從這下面的暫時不拷--><dependency><groupId>org.mybatis.spring.boot</groupId><artifactId>mybatis-spring-boot-starter</artifactId><version>1.1.1</version></dependency><!-- 加入redis起步依賴 --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-redis</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-freemarker</artifactId></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.6</version></dependency><dependency><groupId>com.alibaba</groupId><artifactId>druid</artifactId><version>1.0.28</version></dependency></dependencies><!--到這結束--></project>

程序的主方法mySpringBootDemo.java

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication;/*** 掃描所有的類* 并將當前類對象交給Spring管理*/ @SpringBootApplication public class mySpringBootDemo {public static void main(String[] args) {// 項目入口SpringApplication.run(mySpringBootDemo.class,args);}}

Controller（返回的都是json格式數據）

package cn.x5456.controller;import cn.x5456.pojo.User; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map;/*** rest風格的controller（返回json數據）* 相當于@Controller+@ResponseBody注解*/ @RestController public class helloController {/*** 返回json格式數據* @return*/@RequestMapping("hello")public String hello(){return "hello,world!";}/*** 返回pojo*/@RequestMapping("pojo")public User pojo(){User u = new User();u.setName("張三");u.setAge(19);return u;}/*** 返回集合*/@RequestMapping("list")public List<User> list(){ArrayList<User> uList = new ArrayList<>();User u1 = new User();u1.setName("張三");u1.setAge(19);User u2 = new User();u2.setName("李四");u2.setAge(20);uList.add(u1);uList.add(u2);return uList;}/*** 返回map*/@RequestMapping("map")public Map<String,Object> map(){HashMap<String, Object> map = new HashMap<>();map.put("a",1);map.put("b",2);return map;}}

二、SpringBoot與Mybatis整合

1）導入相關jar包

<!--mybatis整合SpringBoot的jar包-->
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.1.1</version>
</dependency>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>

2）創建文件夾，并書寫配置文件

sqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <!--雖然是空的，但必須有--> </configuration>

UserMapper.xml

<?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.x5456.mapper.UserMapper"> <!-- 此處的命名空間必須能點到響應的mapper --><select id="findAll" resultType="User">select * from user</select> </mapper>

application.properties

#spring集成Mybatis環境# 1.設置別名 mybatis.type-aliases-package=cn.x5456.domain # 2.加載Mybatis配置文件 mybatis.mapper-locations = classpath:mapper/*Mapper.xml mybatis.config-location = classpath:mapper/config/sqlMapConfig.xml # 3.配置數據庫連接 spring.datasource.driver-class-name= com.mysql.jdbc.Driver spring.datasource.url = jdbc:mysql://localhost:3306/mybatis01?useUnicode=true&characterEncoding=utf-8 spring.datasource.username = root spring.datasource.password = 5456

3） 代碼實現

UserMapper.java（接口，與上面usermapper.xml配置文件對應）

import java.util.List;import org.apache.ibatis.annotations.Mapper;import cn.x5456.domain.User; @Mapper public interface UserMapper {public List<User> findAll();}

UserServiceImpl.java

@Service public class UserServiceImpl implements UserService {@Autowiredprivate UserMapper userMapper;/*@Autowiredprivate JedisCluster jedisCluster;*/public List<User> findAllUser() {List<User> list = userMapper.findAll();return list;} }

UserController.java

@RestController public class UserController {@Autowiredprivate UserService userService;@RequestMapping("allUser")public List<User> allUser(){List<User> allUser = userService.findAllUser();return allUser;} }

三、SpringBoot整合redis單機版

1）在application.properties中添加如下代碼

#Spring與redis整合spring.redis.host=127.0.0.1 spring.redis.port=6379

2）在主程序上添加一個注解

/*** 掃描所有的類* 并將當前類對象交給Spring管理*/ @EnableCaching // 開啟緩存 @SpringBootApplication public class mySpringBootDemo {public static void main(String[] args) {// 項目入口SpringApplication.run(mySpringBootDemo.class,args);}}

3）在Service層中需要緩存的方法上添加Cacheable注解

/*** 測試緩存，必須要有一個value，作為redis中緩存的鍵* @return*/ @Cacheable(value = "findAll") public List<User> findAllUser() {List<User> list = userMapper.findAll();return list; }

四、SpringBoot整合redis集群

?

轉載于:https://www.cnblogs.com/x54256/p/9156676.html

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