上一篇写了springboot与mongo的整合，那么这次就写一下springboot与redis的结合，这里使用的是redis集群模式（主从），主从环境的搭建，请参考
redis集群搭建
搭建完redis集群环境后，开始springboot之旅
1、redis介绍
redis的介绍及应用场景参考 redis介绍
2、项目构建
我们还是从redis项目构建开始说起,首先还是进入的spring官网,
从这里开始构建项目，如下图
11.png
当然也可以自己添加pom文件，如下
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
3、添加配置文件
application.properties中
#-----------------------
# start redis cluster
jedis.cluster.nodesString= 103.45.12.176:7000,47.88.221.76:7000,103.45.12.176:7001,47.88.221.76:7001,103.45.12.176:7002,47.88.221.76:7002
jedis.cluster.testWhileIdle=true
jedis.cluster.connectionTimeout=60
jedis.cluster.soTimeout=60
jedis.cluster.maxAttempts=1000
jedis.cluster.password=12597758
# end redis cluster config
#---------------------------------
4、jedis配置类的编写
这里是核心jedisCluster这个bean的创建
@Configuration
@ConfigurationProperties(prefix = "jedis.cluster")
public class JedisClusterConfig {
private String nodesString;
private Boolean testWhileIdle;
private Integer connectionTimeout;
private Integer soTimeout;
private Integer maxAttempts;
private String password;
public Boolean getTestWhileIdle() {
return testWhileIdle;
}
public void setTestWhileIdle(Boolean testWhileIdle) {
this.testWhileIdle = testWhileIdle;
}
public Integer getConnectionTimeout() {
return connectionTimeout;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public void setConnectionTimeout(Integer connectionTimeout) {
this.connectionTimeout = connectionTimeout;
}
public Integer getSoTimeout() {
return soTimeout;
}
public void setSoTimeout(Integer soTimeout) {
this.soTimeout = soTimeout;
}
public Integer getMaxAttempts() {
return maxAttempts;
}
public void setMaxAttempts(Integer maxAttempts) {
this.maxAttempts = maxAttempts;
}
public String getNodesString() {
return nodesString;
}
public void setNodesString(String nodesString) {
this.nodesString = nodesString;
}
@Bean
public JedisCluster jedisCluster() {
String[] nodes = nodesString.split(",");
Set<HostAndPort> nodeSet = new HashSet<HostAndPort>(nodes.length);
for (String node : nodes) {
String[] nodeAttrs = node.trim().split(":");
HostAndPort hap = new HostAndPort(nodeAttrs[0], Integer.valueOf(nodeAttrs[1]));
nodeSet.add(hap);
}
JedisPoolConfig poolConfig = new JedisPoolConfig();
// TODO:password and poolconfig
JedisCluster jc = new JedisCluster(nodeSet, connectionTimeout, soTimeout, maxAttempts,password, poolConfig);
return jc;
}
}
5、通用接口的编写
经过这几篇的博客，可能也发现很多接口的定义，然后由不同的业务类去实现，面向接口的编程也是经历过近期的一个项目才有了比较深的理解，这些都是跟朱哥和军哥学习的，代码编写的规范，对于一个程序员来说，越早养成越好
public interface NoSqlClient<T> {
void set(final String key, final T value);
void set(String key, T value, Long expiry);
<T> boolean exist(Class<T> clazz, String key);
T get(final String key, Class<T> clazz);
<T> void delete(String key);
<T> void hashSet(String key, String hashKey, T hashValue);
Object hashGet(String key, String hashKey, Class<?> hashValueClazz);
}
6、接下来是jedis接口的实现
@Service
public class JedisClusterClient<T> implements NoSqlClient<T> {
protected final Logger logger = LoggerFactory.getLogger(this.getClass());
@Autowired
private JedisCluster jedisCluster;
public void set(String key, T value){
logger.info("-------------"+jedisCluster);
jedisCluster.set(key,JSON.toJSONString(value,true));
}
@Override
public void set(String key, T value, Long expiry) {
}
@Override
public <T1> boolean exist(Class<T1> clazz, String key) {
checkRedisKey(key);
return jedisCluster.exists(key);
}
@Override
public T get(String key, Class<T> clazz) {
checkRedisKey(key);
String value = jedisCluster.get(key);
return JSON.parseObject(value, clazz);
}
@Override
public <T1> void delete(String key) {
checkRedisKey(key);
jedisCluster.del(key);
}
@Override
public <T1> void hashSet(String key, String hashKey, T1 hashValue) {
checkRedisKey(key);
jedisCluster.hset(key, hashKey, JSON.toJSONString(hashValue));
}
@Override
public Object hashGet(String key, String hashKey, Class<?> hashValueClazz) {
return null;
}
/**
* 检查Redis参数
*
* @param key
* @param value
* @return
*/
private String checkRedisNoSqlSupport(final String key, final T value) {
checkRedisKey(key);
if (value == null)
throw new RedisException("value is null!");
String stringValue = null;
try {
stringValue = JSON.toJSONString(value,true);
} catch (JSONException e) {
throw new RedisException("value toJSONString exception!");
}
if (StringUtils.isEmpty(stringValue))
throw new RedisException("value is null!");
return stringValue;
}
/**
* 检查Redis key,redis key 长度建议不要超过1M,redis支持512M
* @param key
*/
private void checkRedisKey(final String key) {
if (StringUtils.isEmpty(key))
throw new RedisException("key is null!");
if (key.length() > 1000000L)
throw new RedisException("length of key greater than 1M!");
}
}
这里我只写了几个基础的核心配置，包括一些异常的处理，这里都没有贴出代码，当然代码在文章最后也会给出，不必担心
7、业务dao的实现
不同的业务只需继承上面的类即可
@Component
public class UserInfoCacheDao extends JedisClusterClient<UserInfo> {
public void setUserInfo(UserInfo userInfo){
super.set("lessons.user:1",userInfo);
}
}
这里同样也是只写了一个set方法
8、单元测试
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest
public class UserInfoCacheDaoTest {
@Autowired
private UserInfoCacheDao userInfoCacheDao;
@Test
public void setUserInfo() throws Exception {
UserInfo userInfo = new UserInfo();
userInfo.setAge(12);
userInfo.setId(1000l);
userInfo.setName("admin");
userInfo.setNickname("管理员");
userInfo.setPassword("123445");
userInfoCacheDao.setUserInfo(userInfo);
}
}
添加完成后，去查看发现，已经有已经生成。
github
中lessons-6
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