使用spring-data-redis实现java和redis的连接及操作
官方文档:http://projects.spring.io/spring-data-redis/#quick-start
1 下载 spring-data-redis的jar包
<dependencies>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-redis</artifactId>
<version>1.5.0.RELEASE</version>
</dependency>
</dependencies>
http://grepcode.com/snapshot/repo1.maven.org/maven2/org.springframework.data/spring-data-redis/1.4.0.RELEASE
- redis.host=192.168.1.20//redis的服务器地址
- redis.port=6400//redis的服务端口
- redis.pass=1234xxxxx//密码
- redis.default.db=0//链接数据库
- redis.timeout=100000//客户端超时时间单位是毫秒
- redis.maxActive=300// 最大连接数
- redis.maxIdle=100//最大空闲数
redis.host=192.168.1.20//redis的服务器地址 redis.port=6400//redis的服务端口 redis.pass=1234xxxxx//密码 redis.default.db=0//链接数据库 redis.timeout=100000//客户端超时时间单位是毫秒 redis.maxActive=300// 最大连接数 redis.maxIdle=100//最大空闲数
- redis.maxWait=1000//最大建立连接等待时间
- redis.testOnBorrow=true//<span style="font-size: 12px;">指明是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个</span>
redis.maxWait=1000//最大建立连接等待时间
redis.testOnBorrow=true//指明是否在从池中取出连接前进行检验,如果检验失败,则从池中去除连接并尝试取出另一个
spring 中配置
- <bean id="propertyConfigurerRedis" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
- <property name="order" value="1" />
- <property name="ignoreUnresolvablePlaceholders" value="true" />
- <property name="locations">
- <list>
- <value>classpath:config/redis-manager-config.properties</value>
- </list>
- </property>
- </bean>
- <!-- jedis pool配置 -->
- <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig">
- <property name="maxActive" value="${redis.maxActive}" />
- <property name="maxIdle" value="${redis.maxIdle}" />
- <property name="maxWait" value="${redis.maxWait}" />
- <property name="testOnBorrow" value="${redis.testOnBorrow}" />
- </bean>
- <!-- spring data redis -->
- <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
- <property name="usePool" value="true"></property>
- <property name="hostName" value="${redis.host}" />
- <property name="port" value="${redis.port}" />
- <property name="password" value="${redis.pass}" />
- <property name="timeout" value="${redis.timeout}" />
- <property name="database" value="${redis.default.db}"></property>
- <constructor-arg index="0" ref="jedisPoolConfig" />
- </bean>
- <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
- <property name="connectionFactory" ref="jedisConnectionFactory" />
- </bean>
<bean id="propertyConfigurerRedis" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="order" value="1" /> <property name="ignoreUnresolvablePlaceholders" value="true" /> <property name="locations"> <list> <value>classpath:config/redis-manager-config.properties</value> </list> </property> </bean> <!-- jedis pool配置 --> <bean id="jedisPoolConfig" class="redis.clients.jedis.JedisPoolConfig"> <property name="maxActive" value="${redis.maxActive}" /> <property name="maxIdle" value="${redis.maxIdle}" /> <property name="maxWait" value="${redis.maxWait}" /> <property name="testOnBorrow" value="${redis.testOnBorrow}" /> </bean> <!-- spring data redis --> <bean id="jedisConnectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory"> <property name="usePool" value="true"></property> <property name="hostName" value="${redis.host}" /> <property name="port" value="${redis.port}" /> <property name="password" value="${redis.pass}" /> <property name="timeout" value="${redis.timeout}" /> <property name="database" value="${redis.default.db}"></property> <constructor-arg index="0" ref="jedisPoolConfig" /> </bean> <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate"> <property name="connectionFactory" ref="jedisConnectionFactory" /> </bean>
- <!--配置一个基础类(之后的业务类继承于该类)、将redisTemplate注入 -->
<!--配置一个基础类(之后的业务类继承于该类)、将redisTemplate注入 -->
- <bean id="redisBase" abstract="true">
- <property name="template" ref="redisTemplate"></property>
- </bean>
<bean id="redisBase" abstract="true"> <property name="template" ref="redisTemplate"></property> </bean>
java代码:
- public class RedisBase {
- private StringRedisTemplate template;
- /**
- * @return the template
- */
- public StringRedisTemplate getTemplate() {
- return template;
- }
- /**
- * @param template the template to set
- */
- public void setTemplate(StringRedisTemplate template) {
- this.template = template;
- }
- }
public class RedisBase { private StringRedisTemplate template; /** * @return the template */ public StringRedisTemplate getTemplate() { return template; } /** * @param template the template to set */ public void setTemplate(StringRedisTemplate template) { this.template = template; } }
继续:
下面就是具体redis的值的写入、读出、清除缓存喽!
第一:写入
- public class StudentCountDO {
- private Long id;
- private String studentId;
- private Long commentHeadCount;
- private Long docAttitudeScores;
- private Long guideServiceScores;
- private Long treatEffectCount;
- private Long treatEffectScores;
- private String gmtModified;
- private String gmtCreated;
- private Long waitingTimeScores;
- }
public class StudentCountDO { private Long id; private String studentId; private Long commentHeadCount; private Long docAttitudeScores; private Long guideServiceScores; private Long treatEffectCount; private Long treatEffectScores; private String gmtModified; private String gmtCreated; private Long waitingTimeScores; }
- StringRedisTemplate template = getTemplate();//获得上面注入的template
- // save as hash 一般key都要加一个前缀,方便清除所有的这类key
- BoundHashOperations<String, String, String> ops = template.boundHashOps("student:"+studentCount.getStudentId());
- Map<String, String> data = new HashMap<String, String>();
- data.put("studentId", CommentUtils.convertNull(studentCount.getStudentId()));
- data.put("commentHeadCount", CommentUtils.convertLongToString(studentCount.getCommentHeadCount()));
- data.put("docAttitudeScores", CommentUtils.convertLongToString(studentCount.getDocAttitudeScores()));
- data.put("guideServicesScores", CommentUtils.convertLongToString(studentCount.getGuideServiceScores()));
- data.put("treatEffectCount", CommentUtils.convertLongToString(studentCount.getTreatEffectCount()));
- data.put("treatEffectScores", CommentUtils.convertLongToString(studentCount.getTreatEffectScores()));
- data.put("waitingTimeScores", CommentUtils.convertLongToString(studentCount.getWaitingTimeScores()));
- try {
- ops.putAll(data);
- } catch (Exception e) {
- logger.error(CommentConstants.WRITE_EXPERT_COMMENT_COUNT_REDIS_ERROR + studentCount.studentCount(), e);
- }
StringRedisTemplate template = getTemplate();//获得上面注入的template // save as hash 一般key都要加一个前缀,方便清除所有的这类key BoundHashOperations<String, String, String> ops = template.boundHashOps("student:"+studentCount.getStudentId()); Map<String, String> data = new HashMap<String, String>(); data.put("studentId", CommentUtils.convertNull(studentCount.getStudentId())); data.put("commentHeadCount", CommentUtils.convertLongToString(studentCount.getCommentHeadCount())); data.put("docAttitudeScores", CommentUtils.convertLongToString(studentCount.getDocAttitudeScores())); data.put("guideServicesScores", CommentUtils.convertLongToString(studentCount.getGuideServiceScores())); data.put("treatEffectCount", CommentUtils.convertLongToString(studentCount.getTreatEffectCount())); data.put("treatEffectScores", CommentUtils.convertLongToString(studentCount.getTreatEffectScores())); data.put("waitingTimeScores", CommentUtils.convertLongToString(studentCount.getWaitingTimeScores())); try { ops.putAll(data); } catch (Exception e) { logger.error(CommentConstants.WRITE_EXPERT_COMMENT_COUNT_REDIS_ERROR + studentCount.studentCount(), e); }
第二、 取出
- public StudentCountDO getStudentCommentCountInfo(String studentId) {
- final String strkey = "student:"+ studentId;
- return getTemplate().execute(new RedisCallback<StudentCountDO>() {
- @Override
- public StudentCountDO doInRedis(RedisConnection connection) throws DataAccessException {
- byte[] bkey = getTemplate().getStringSerializer().serialize(strkey);
- if (connection.exists(bkey)) {
- List<byte[]> value = connection.hMGet(bkey,
- getTemplate().getStringSerializer().serialize("studentId"), getTemplate()
- .getStringSerializer().serialize("commentHeadCount"), getTemplate()
- .getStringSerializer().serialize("docAttitudeScores"), getTemplate()
- .getStringSerializer().serialize("guideServicesScores"), getTemplate()
- .getStringSerializer().serialize("treatEffectCount"), getTemplate()
- .getStringSerializer().serialize("treatEffectScores"), getTemplate()
- .getStringSerializer().serialize("waitingTimeScores"));
- StudentCountDO studentCommentCountDO = new StudentCountDO();
- studentCommentCountDO.setExpertId(getTemplate().getStringSerializer().deserialize(value.get(0)));
- studentCommentCountDO.setCommentHeadCount(Long.parseLong(getTemplate().getStringSerializer()
- .deserialize(value.get(1))));
- studentCommentCountDO.setDocAttitudeScores(Long.parseLong(getTemplate().getStringSerializer()
- .deserialize(value.get(2))));
- studentCommentCountDO.setGuideServiceScores(Long.parseLong(getTemplate().getStringSerializer()
- .deserialize(value.get(3))));
- studentCommentCountDO.setTreatEffectCount(Long.parseLong(getTemplate().getStringSerializer()
- .deserialize(value.get(4))));
- studentCommentCountDO.setTreatEffectScores(Long.parseLong(getTemplate().getStringSerializer()
- .deserialize(value.get(5))));
- studentCommentCountDO.setWaitingTimeScores(Long.parseLong(getTemplate().getStringSerializer()
- .deserialize(value.get(6))));
- return studentCommentCountDO;
- }
- return null;
- }
- });
- }
public StudentCountDO getStudentCommentCountInfo(String studentId) { final String strkey = "student:"+ studentId; return getTemplate().execute(new RedisCallback<StudentCountDO>() { @Override public StudentCountDO doInRedis(RedisConnection connection) throws DataAccessException { byte[] bkey = getTemplate().getStringSerializer().serialize(strkey); if (connection.exists(bkey)) { List<byte[]> value = connection.hMGet(bkey, getTemplate().getStringSerializer().serialize("studentId"), getTemplate() .getStringSerializer().serialize("commentHeadCount"), getTemplate() .getStringSerializer().serialize("docAttitudeScores"), getTemplate() .getStringSerializer().serialize("guideServicesScores"), getTemplate() .getStringSerializer().serialize("treatEffectCount"), getTemplate() .getStringSerializer().serialize("treatEffectScores"), getTemplate() .getStringSerializer().serialize("waitingTimeScores")); StudentCountDO studentCommentCountDO = new StudentCountDO(); studentCommentCountDO.setExpertId(getTemplate().getStringSerializer().deserialize(value.get(0))); studentCommentCountDO.setCommentHeadCount(Long.parseLong(getTemplate().getStringSerializer() .deserialize(value.get(1)))); studentCommentCountDO.setDocAttitudeScores(Long.parseLong(getTemplate().getStringSerializer() .deserialize(value.get(2)))); studentCommentCountDO.setGuideServiceScores(Long.parseLong(getTemplate().getStringSerializer() .deserialize(value.get(3)))); studentCommentCountDO.setTreatEffectCount(Long.parseLong(getTemplate().getStringSerializer() .deserialize(value.get(4)))); studentCommentCountDO.setTreatEffectScores(Long.parseLong(getTemplate().getStringSerializer() .deserialize(value.get(5)))); studentCommentCountDO.setWaitingTimeScores(Long.parseLong(getTemplate().getStringSerializer() .deserialize(value.get(6)))); return studentCommentCountDO; } return null; } }); }
这个存和取的过程其实是把对象中的各个字段序列化之后存入到hashmap 、取出来的时候在进行按照存入进去的顺序进行取出。
第三 清除
这个就根据前面的前缀很简单了,一句代码就搞定啦!
- private void clear(String pattern) {
- StringRedisTemplate template = getTemplate();
- Set<String> keys = template.keys(pattern);
- if (!keys.isEmpty()) {
- template.delete(keys);
- }
- }
private void clear(String pattern) { StringRedisTemplate template = getTemplate(); Set<String> keys = template.keys(pattern); if (!keys.isEmpty()) { template.delete(keys); } }
pattern传入为student: 就可以将该类型的所有缓存清除掉喽!