【Spring系列】Spring mvc整合redis(非集群)

一、在pom.xml中增加redis需要的jar包

 <!--spring redis相关jar包-->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
            <version>1.8.9.RELEASE</version>
        </dependency>

二、准备redis.properties文件，位置在resources文件夹下

redis.host=192.168.181.201
redis.port=6379
redis.pass=123456
redis.timeout=-1
redis.maxIdle=100
redis.minIdle=8
redis.maxWait=-1
redis.testOnBorrow=true

三、在applicationContext.xml中增加集成redis的配置

<!--集成redis-->
    <!--jedis配置-->
    <bean id="poolConfig" class="redis.clients.jedis.JedisPoolConfig">
        <property name="maxIdle" value="100"/>
        <property name="minIdle" value="8"/>
        <property name="maxWaitMillis" value="-1"/>
        <property name="testOnBorrow" value="false"/>
    </bean>
    <!--redis服务器中心-->
    <bean id="connectionFactory" class="org.springframework.data.redis.connection.jedis.JedisConnectionFactory">
        <property name="poolConfig" ref="poolConfig"/>
        <property name="port" value="6379"/>
        <property name="hostName" value="192.168.181.201"/>
        <property name="password" value="123456"/>
        <property name="timeout" value="-1"/>
    </bean>
    <!--redis操作模板  面向对象的模板-->
    <bean id="redisTemplate" class="org.springframework.data.redis.core.StringRedisTemplate">
        <property name="connectionFactory" ref="connectionFactory"/>
        <!--如果不配置Serializer 那么存储的时候只能使用String ,如果用对象类型存储，那么会提示错误-->
        <property name="keySerializer">
            <bean class="org.springframework.data.redis.serializer.StringRedisSerializer"/>
        </property>
        <property name="valueSerializer">
            <bean class="org.springframework.data.redis.serializer.JdkSerializationRedisSerializer"/>
        </property>
    </bean>

　　

四、编写redis操作工具类

package com.slp.util;

import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;

/**
 * @author sanglp
 * @create 2018-01-31 9:08
 * @desc 操作hash的工具类
 **/
@Component("redisCache")
public class RedisCacheUtil {
    @Resource
    private StringRedisTemplate redisTemplate;

    /**
     * 向Hash中添加值
     * @param key  可以对应数据库中的表名
     * @param field  可以对应数据库表中的唯一索引
     * @param value  存入redis中的值
     */
    public void hset(String key,String field,String value){
        if (key == null || "".equals(key)){
            return;
        }
        redisTemplate.opsForHash().put(key,field,value);
    }

    /**
     * 从redis中取出值
     * @param key
     * @param field
     * @return
     */
    public String hget(String key,String field){
        if (key == null || "".equals(key)){
            return null;
        }
        return (String)redisTemplate.opsForHash().get(key,field);
    }

    /**
     * 查询key中对应多少条数据
     * @param key
     * @param field
     * @return
     */
    public boolean hexists(String key,String field){
        if(key == null|| "".equals(key)){
            return false;
        }
        return redisTemplate.opsForHash().hasKey(key,field);
    }

    /**
     * 删除
     * @param key
     * @param field
     */
    public void hdel(String key,String field){
        if(key == null || "".equals(key)){
            return;
        }
        redisTemplate.opsForHash().delete(key,field);
    }
}

　　

五、使用junit进行测试

package com.slp;

import com.slp.util.RedisCacheUtil;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

/**
 * @author sanglp
 * @create 2018-01-31 9:16
 * @desc redis测试类
 **/
public class RedisTest {
    private RedisCacheUtil redisCache;
    private static String key;
    private static String field;
    private static String value;

    @Before
    public void setUp() throws Exception {
        //ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("D:/web-back/web-back/myweb/web/WEB-INF/applicationContext.xml");
        //context.start();

        String path="web/WEB-INF/applicationContext.xml";
        ApplicationContext context = new FileSystemXmlApplicationContext(path);
        redisCache = (RedisCacheUtil) context.getBean("redisCache");
    }

    // 初始化 数据
    static {
        key = "tb_student";
        field = "stu_name";
        value = "一系列的关于student的信息！";
    }

    // 测试增加数据
    @Test
    public void testHset() {
        redisCache.hset(key, field, value);
        System.out.println("数据保存成功！");
    }

    // 测试查询数据
    @Test
    public void testHget() {
        String re = redisCache.hget(key, field);
        System.out.println("得到的数据：" + re);
    }

    // 测试数据的数量
    @Test
    public void testHsize() {
        //long size = redisCache.hsize(key);
       // System.out.println("数量为：" + size);
    }
}

六、在项目中简单使用　　

package com.slp.web;

import com.slp.dto.UserInfo;
import com.slp.service.UserInfoService;
import com.slp.util.EHCacheUtil;
import com.slp.util.RedisCacheUtil;
import net.sf.ehcache.CacheManager;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

import javax.servlet.http.HttpServletRequest;
import java.util.List;

/**
 * @author sanglp
 * @create 2018-01-23 9:04
 * @desc 登陆入口
 **/
@Controller
public class LoginController {
    private Logger logger= Logger.getLogger(this.getClass());
    @Autowired
    private UserInfoService userInfoService;
    @Autowired
    private CacheManager cacheManager;
    @Autowired
    private RedisCacheUtil redisCacheUtil;
    /**
     * 进入登陆首页页面
     * @param map
     * @return
     */
    @RequestMapping(value = "login",method = {RequestMethod.POST,RequestMethod.GET})
    public String login(ModelMap map){
       //进入登陆页面
        return "login";

    }


    /**
     * 获取用户信息监测是否已注册可以登录
     * @param map
     * @param request
     * @return
     */
    @RequestMapping(value = "loginConfirm",method = {RequestMethod.POST,RequestMethod.GET})
    public String loginConfirm(ModelMap map, HttpServletRequest request){
        EHCacheUtil.put("FirstKey",request.getParameter("email") );
        //登陆提交页面
        String email = request.getParameter("email");
        logger.info("email="+email);
        String password = request.getParameter("password");
        logger.info("password="+password);
        UserInfo userInfo = new UserInfo();
        userInfo.setEmail(email);
        userInfo.setUserPassword(password);
        UserInfo user= userInfoService.selectUserByEmail(userInfo);
        String userEmail = redisCacheUtil.hget("userInfo","email");
        logger.debug("userEmail in redis cache is = "+userEmail);
        if(null == userEmail){
            redisCacheUtil.hset("userInfo","email",email);
        }
        if (user==null){
            return "signUp";
        }
        List keys = EHCacheUtil.getKeys();
        for(int i=0;i<keys.size();i++){
            logger.debug(keys.get(i));
            logger.debug(EHCacheUtil.get(keys.get(i)));
        }
        logger.info(user.getEmail());
        logger.info(user.getId());
        if(!user.getUserPassword().equals(password)){
            map.addAttribute("msg","请输入正确的密码");
            return "login";
        }else {
            request.getSession().setAttribute("email",user.getEmail());
            request.getSession().setAttribute("userName",user.getUserName());
            request.getSession().setAttribute("userId",user.getId());
            logger.info("校验通过");
            return "index";
        }


    }
}

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