1.添加依赖
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</dependency> <dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.</version>
</dependency>
2.在application.properties中配置redis
#redis
redis.host=192.168.220.128
redis.port=
redis.timeout=
redis.password=
redis.poolMaxTotal=
redis.poolMaxIdle=
redis.poolMaxWait=
3.创建RedisConfig类 对应application.properties中的配置
@Component
@ConfigurationProperties(prefix="redis")
public class RedisConfig {
private String host;
private int port;
private int timeout;//秒
private String password;
private int poolMaxTotal;
private int poolMaxIdle;
private int poolMaxWait;//秒
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public int getPort() {
return port;
}
public void setPort(int port) {
this.port = port;
}
public int getTimeout() {
return timeout;
}
public void setTimeout(int timeout) {
this.timeout = timeout;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public int getPoolMaxTotal() {
return poolMaxTotal;
}
public void setPoolMaxTotal(int poolMaxTotal) {
this.poolMaxTotal = poolMaxTotal;
}
public int getPoolMaxIdle() {
return poolMaxIdle;
}
public void setPoolMaxIdle(int poolMaxIdle) {
this.poolMaxIdle = poolMaxIdle;
}
public int getPoolMaxWait() {
return poolMaxWait;
}
public void setPoolMaxWait(int poolMaxWait) {
this.poolMaxWait = poolMaxWait;
}
}
4.创建RedisServer
@Service
public class RedisService { @Autowired
JedisPool jedisPool; /**
* 获取当个对象
* */
public <T> T get(KeyPrefix prefix, String key, Class<T> clazz) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
//生成真正的key
String realKey = prefix.getPrefix() + key;
String str = jedis.get(realKey);
T t = stringToBean(str, clazz);
return t;
}finally {
returnToPool(jedis);
}
} /**
* 设置对象
* */
public <T> boolean set(KeyPrefix prefix, String key, T value) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
String str = beanToString(value);
if(str == null || str.length() <= ) {
return false;
}
//生成真正的key
String realKey = prefix.getPrefix() + key;
int seconds = prefix.expireSeconds();
if(seconds <= ) {
jedis.set(realKey, str);
}else {
jedis.setex(realKey, seconds, str);
}
return true;
}finally {
returnToPool(jedis);
}
} /**
* 判断key是否存在
* */
public <T> boolean exists(KeyPrefix prefix, String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
//生成真正的key
String realKey = prefix.getPrefix() + key;
return jedis.exists(realKey);
}finally {
returnToPool(jedis);
}
} /**
* 增加值
* */
public <T> Long incr(KeyPrefix prefix, String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
//生成真正的key
String realKey = prefix.getPrefix() + key;
return jedis.incr(realKey);
}finally {
returnToPool(jedis);
}
} /**
* 减少值
* */
public <T> Long decr(KeyPrefix prefix, String key) {
Jedis jedis = null;
try {
jedis = jedisPool.getResource();
//生成真正的key
String realKey = prefix.getPrefix() + key;
return jedis.decr(realKey);
}finally {
returnToPool(jedis);
}
} private <T> String beanToString(T value) {
if(value == null) {
return null;
}
Class<?> clazz = value.getClass();
if(clazz == int.class || clazz == Integer.class) {
return ""+value;
}else if(clazz == String.class) {
return (String)value;
}else if(clazz == long.class || clazz == Long.class) {
return ""+value;
}else {
return JSON.toJSONString(value);
}
} @SuppressWarnings("unchecked")
private <T> T stringToBean(String str, Class<T> clazz) {
if(str == null || str.length() <= || clazz == null) {
return null;
}
if(clazz == int.class || clazz == Integer.class) {
return (T)Integer.valueOf(str);
}else if(clazz == String.class) {
return (T)str;
}else if(clazz == long.class || clazz == Long.class) {
return (T)Long.valueOf(str);
}else {
return JSON.toJavaObject(JSON.parseObject(str), clazz);
}
} private void returnToPool(Jedis jedis) {
if(jedis != null) {
jedis.close();
}
} }
5.创建RedisPoolFactory
@Service
public class RedisPoolFactory { @Autowired
RedisConfig redisConfig; @Bean
public JedisPool JedisPoolFactory() {
JedisPoolConfig poolConfig = new JedisPoolConfig();
poolConfig.setMaxIdle(redisConfig.getPoolMaxIdle());
poolConfig.setMaxTotal(redisConfig.getPoolMaxTotal());
poolConfig.setMaxWaitMillis(redisConfig.getPoolMaxWait() * );
JedisPool jp = new JedisPool(poolConfig, redisConfig.getHost(), redisConfig.getPort(),
redisConfig.getTimeout()*, redisConfig.getPassword(), );
return jp;
} }
6.在controller中写一个demo
@Controller
@RequestMapping("/demo")
public class SampleController { @Autowired
UserService userService; @Autowired
RedisService redisService; @RequestMapping("/hello")
@ResponseBody
public Result<String> home() {
return Result.success("Hello，world");
} @RequestMapping("/error")
@ResponseBody
public Result<String> error() {
return Result.error(CodeMsg.SESSION_ERROR);
} @RequestMapping("/hello/themaleaf")
public String themaleaf(Model model) {
model.addAttribute("name", "Joshua");
return "hello";
} @RequestMapping("/db/get")
@ResponseBody
public Result<User> dbGet() {
User user = userService.getById();
return Result.success(user);
} @RequestMapping("/db/tx")
@ResponseBody
public Result<Boolean> dbTx() {
userService.tx();
return Result.success(true);
} @RequestMapping("/redis/get")
@ResponseBody
public Result<User> redisGet() {
User user = redisService.get(UserKey.getById, ""+, User.class);
return Result.success(user);
} @RequestMapping("/redis/set")
@ResponseBody
public Result<Boolean> redisSet() {
User user = new User();
user.setId();
user.setName("");
redisService.set(UserKey.getById, ""+, user);//UserKey:id1
return Result.success(true);
} }