本篇文章为大家展示了redis如何在Spring中使用，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。
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Eclipse工程结构
如下图为我的示例工程的结构图，采用Maven构建。其中需要集成Spring，因此需要beans.xml文件配置spring的依赖注入，redis.properties配置连接服务器的配置信息。
其中工程中beans.xml和redis.properties文件直接放在了根目录，有需要的读者可以放到resource目录中。
POM依赖
如下为示例POM依赖，Spring集成redis需要依赖的包为：jedis包，spring-context模块及依赖的包，spring-data-redis模块包，spring-test包用于JUnit测试，pom.xml文件内容如下：
4.0.0
com.test
JavaTest
0.0.1-SNAPSHOT
jar
JavaTest
https://maven.apache.org
UTF-8
junit
junit
4.12
test
redis.clients
jedis
2.5.1
org.springframework
spring-context
4.2.6.RELEASE
runtime
org.springframework
spring-test
4.2.6.RELEASE
runtime
org.springframework.data
spring-data-redis
1.7.2.RELEASE
Spring配置
Spring配置文件beans.xml的配置如下：
在beans.xml配置文件中，需要先加载redis.properties文件。
Redis配置信息
Redis的配置信息在redis.properties文件中配置：
# Redis地址和端口和连接密码
redis.host=localhost
redis.port=6379
redis.pass=
redis.maxIdle=300
redis.testOnBorrow=true
此示例，连接Redis服务器时没有设置连接密码，因此不用填值。
Java代码
User.java
package com.redis.test;
import java.io.Serializable;
public class User implements Serializable {
private static final long serialVersionUID = 3409768855488864675L;
private String id;
private String name;
private String password;
public User() {
}
public User(String id, String name, String password) {
this.id = id;
this.name = name;
this.password = password;
}
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 String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String toString() {
return "User [id=" + id + ", name=" + name + ", password=" + password + "]";
}
}AbstractRedisBaseDao.java
package com.redis.test;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;
public abstract class AbstractRedisBaseDao {
protected RedisTemplate redisTemplate;
public RedisTemplate getRedisTemplate() {
return redisTemplate;
}
public void setRedisTemplate(RedisTemplate redisTemplate) {
this.redisTemplate = redisTemplate;
}
/**
* 获取 RedisSerializer
*/
protected RedisSerializer getRedisSerializer() {
return redisTemplate.getStringSerializer();
}
}
IUserDao.java
package com.redis.test;
import java.util.List;
public interface IUserDao {
/** 新增 */
Boolean add(User user);
/** 批量新增，pipeline方式 */
Boolean add(List list);
/** 删除 */
void delete(String key);
/** 批量删除 */
void delete(List keys);
/** 更新 */
Boolean update(User user);
/** 读取 */
User get(String keyId);
}UserDao.java
package com.redis.test;
import java.util.List;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.util.Assert;
public class UserDao extends AbstractRedisBaseDao implements IUserDao {
public Boolean add(final User user) {
Boolean result = redisTemplate.execute(new RedisCallback() {
public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
RedisSerializer serializer = getRedisSerializer();
byte[] key = serializer.serialize(user.getId());
// 将ID序列化成key
byte[] value = serializer.serialize(user.getName());
return connection.setNX(key, value);
}
}
);
return result;
}
public Boolean add(final List list) {
Assert.notEmpty(list);
Boolean result = redisTemplate.execute(new RedisCallback() {
public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
RedisSerializer serializer = getRedisSerializer();
for (int i = 0; i < list.size(); i++) {
User user = list.get(i);
byte[] key = serializer.serialize(user.getId());
// 将ID序列化成key
byte[] value = serializer.serialize(user.getName());
connection.setNX(key, value);
}
return true;
}
}
, false, true);
return result;
}
public void delete(String key) {
redisTemplate.delete(key);
}
public void delete(List keys) {
redisTemplate.delete(keys);
}
public Boolean update(final User user) {
String key = user.getId();
if(get(key) == null) {
throw new NullPointerException("数据行不存在,key = " + key);
}
Boolean result = redisTemplate.execute(new RedisCallback() {
public Boolean doInRedis(RedisConnection connection) throws DataAccessException {
RedisSerializer serializer = getRedisSerializer();
byte[] key = serializer.serialize(user.getId());
// 将ID序列化成key
byte[] value = serializer.serialize(user.getName());
connection.set(key, value);
return true;
}
}
);
return result;
}
public User get(final String keyId) {
User user = redisTemplate.execute(new RedisCallback() {
public User doInRedis(RedisConnection connection) throws DataAccessException {
RedisSerializer serializer = getRedisSerializer();
byte[] key = serializer.serialize(keyId);
byte[] value = connection.get(key);
if(value == null) {
return null;
}
String name = serializer.deserialize(value);
return new User(keyId, name, null);
}
}
);
return user;
}
}
RedisTest.java（JUnit测试类）
package com.redis.test;
import java.util.ArrayList;
import java.util.List;
import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.AbstractJUnit4SpringContextTests;
import org.springframework.util.Assert;
/**
* junit在Spring context环境下测试
*/
@ContextConfiguration(locations={"classpath*:beans.xml"})
public class RedisTest extends AbstractJUnit4SpringContextTests {
@Autowired
private IUserDao userDao;
/** 增加单个用户 */
@Test
public void testAddUser() {
User user = new User("user1", "password1", null);
Boolean result = userDao.add(user);
Assert.isTrue(result);
System.out.println("添加结果：" + result);
}
/** 批量新增普通方式,5286ms */
@Test
public void testAddUsers1() {
List list = new ArrayList();
for (int i = 10; i < 50000; i++) {
User user = new User();
user.setId("user" + i);
user.setName("password" + i);
list.add(user);
}
long begin = System.currentTimeMillis();
for (User user : list) {
userDao.add(user);
}
System.out.println(System.currentTimeMillis() - begin);
}
/** 批量新增pipeline方式,484ms */
@Test
public void testAddUsers2() {
List list = new ArrayList();
for (int i = 50000; i < 100000; i++) {
User user = new User();
user.setId("user" + i);
user.setName("password" + i);
list.add(user);
}
long begin = System.currentTimeMillis();
Boolean result = userDao.add(list);
Assert.isTrue(result);
System.out.println(System.currentTimeMillis() - begin);
}
/** 更新 */
@Test
public void testUpdate() {
User user = new User();
user.setId("user1");
user.setName("new_password");
Boolean result = userDao.update(user);
Assert.isTrue(result);
}
/** 删除 */
@Test
public void testDelete() {
String key = "user1";
userDao.delete(key);
}
/** 批量删除 */
@Test
public void testDeletes() {
List list = new ArrayList();
for (int i = 0; i < 10; i++) {
list.add("user" + i);
}
userDao.delete(list);
}
/** 读取 */
@Test
public void testGetUser() {
String id = "user1";
User user = userDao.get(id);
Assert.notNull(user);
System.out.println(user);
}
}上述内容就是Redis如何在Spring中使用，你们学到知识或技能了吗？如果还想学到更多技能或者丰富自己的知识储备，欢迎关注创新互联行业资讯频道。
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