SpringBoot入门系列：第四篇 redis

一，准备工作，建立spring-boot-sample-redis工程

1、http://start.spring.io/

A、Artifact中输入spring-boot-sample-Redis

B、勾选Web下的web

C、勾选NOSQL下的redis

2、Eclips中导入工程spring-boot-sample-redis

A、解压快捷工程spring-boot-sample-redis到某文件夹

B、eclips中file->import->Import Existing Maven Projects-->Select Maven projects-->finish导入工程

3、工程导入之后，文件结构如下图

4、在包com.example下建立web文件夹

5、便于测试，引入spring-boot-sample-helloworld的HelloController及配置文件logback.xml

HelloController代码为

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package com.example.web;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
protected static Logger logger=LoggerFactory.getLogger(HelloController.class);
@RequestMapping("/")
public String helloworld(){
logger.debug("访问hello");
return "Hello world!";
}
@RequestMapping("/hello/{name}")
public String helloName(@PathVariable String name){
logger.debug("访问helloName,Name={}",name);
return "Hello "+name;
}
}

logback.xml配置为

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<configuration>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%d %p (%file:%line\)- %m%n</pattern>
<charset>GBK</charset>
</encoder>
</appender>
<appender name="baselog"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<File>log/base.log</File>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>log/base.log.%d.i%</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>64 MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
<encoder>
<pattern>
%d %p (%file:%line\)- %m%n
</pattern>
<charset>UTF-8</charset>
</encoder>
</appender>
<root level="info">
<appender-ref ref="STDOUT" />
</root>
<logger name="com.example" level="DEBUG">
<appender-ref ref="baselog" />
</logger>
</configuration>

注：logback.xml文件位于src/main/resources下

6、启动工程，通过浏览器查看正确性

http://localhost:8080/

http://localhost:8080/hello/上帝

二，使用StringRedisTemplate

1、web文件下建立class，类名为StringRedisController，编写StringRedisController为

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package com.example.web;
import javax.annotation.Resource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class StringRedisController {
protected static Logger logger=LoggerFactory.getLogger(StringRedisController.class);
@Autowired
StringRedisTemplate stringRedisTemplate;
@Resource(name="stringRedisTemplate")
ValueOperations<String,String> valOpsStr;
@RequestMapping("set")
public String setKeyAndValue(String key,String value){
logger.debug("访问set:key={},value={}",key,value);
valOpsStr.set(key, value);
return "Set Ok";
}
@RequestMapping("get")
public String getKey(String key){
logger.debug("访问get:key={}",key);
return valOpsStr.get(key);
}
}

2、修改工程配置文件application.properties，增加以下内容

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#redis数据库名称从0到15,默认为db0
spring.redis.database=1
#redis服务器名称
spring.redis.host=127.0.0.1
#redis服务器密码
spring.redis.password=123456
#redis服务器连接端口号
spring.redis.port=6379
#redis连接池设置
spring.redis.pool.max-idle=8
spring.redis.pool.min-idle=0
spring.redis.pool.max-active=8
spring.redis.pool.max-wait=-1
#spring.redis.sentinel.master=
#spring.redis.sentinel.nodes=
spring.redis.timeout=60000

注：win平台，下载一个，修改密码，就可直接运行

3、运行测试

在浏览器中先输入

http://localhost:8080/set?key=lxh2&&value=1001

再输入

http://localhost:8080/get?key=lxh2

再改改value的值试试

三、使用RedisTemplate

1、在包com.example下建立文件夹domain

2、在domain中建议类person

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package com.example.domain;
import java.io.Serializable;
public class Person implements Serializable {
private static final long serialVersionUID = 1L;
private String id;
private String name;
private Integer age;
public Person() {
super();
}
public Person(String id, String name, Integer age) {
super();
this.id = id;
this.name = name;
this.age = age;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}

注意：一定有空的和全字段的构造函数

3、在domain中建立类PersonDao

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package com.example.domain;
import javax.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Repository;
@Repository
public class PersonDao {
@Autowired
RedisTemplate<Object,Object> redisTemplate;
@Resource(name="redisTemplate")
ValueOperations<Object,Object> valOps;
public void save(Person person){
valOps.set(person.getId(), person);
}
public Person getPerson(String id){
return (Person) valOps.get(id);
}
}

4、在Web中建立类ObjectRedisController

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package com.example.web;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.example.domain.Person;
import com.example.domain.PersonDao;
@RestController
public class ObjectRedisController {
protected static Logger logger=LoggerFactory.getLogger(ObjectRedisController.class);
@Autowired
PersonDao personDao;
@RequestMapping("/setPerson")
public void set(String id,String name,Integer age){
logger.debug("访问setPerson:id={},name={},age={}",id,name,age);
Person person=new Person(id,name,age);
personDao.save(person);
}
@RequestMapping("/getPerson")
public Person getPerson(String id){
return personDao.getPerson(id);
}
}

5、运行测试

http://localhost:8080/setPerson?id=2&&name=lxh2&&age=2

http://localhost:8080/getPerson?id=2

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