一、项目创建及 Thymeleaf 配置

1. pow.xml 文件配置

  1. <parent>
  2.   <groupId>org.springframework.boot</groupId>
  3.   <artifactId>spring-boot-starter-parent</artifactId>
  4.   <version>1.5.7.RELEASE</version>
  5. </parent>
  6. <properties>
  7.   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  8. </properties>
  10. <dependencies>
  11.   <dependency>
  12.     <groupId>org.springframework.boot</groupId>
  13.     <artifactId>spring-boot-starter-web</artifactId>
  14.   </dependency>
  15.   <dependency>
  16.     <groupId>org.springframework.boot</groupId>
  17.     <artifactId>spring-boot-starter-thymeleaf</artifactId>
  18.   </dependency>
  19. </dependencies>

2.application.properties 配置文件

#thymeleaf
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.cache=false
spring.thymeleaf.content-type=text/html
spring.thymeleaf.enabled=true
spring.thymeleaf.encoding=UTF-8
spring.thymeleaf.mode=HTML5

二、集成Mybatis

1. 添加 pow 依赖

<dependency>
  <groupId>mysql</groupId>
  <artifactId>mysql-connector-java</artifactId>
  <version>5.1.46</version>
</dependency>
<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>druid</artifactId>
  <version>1.0.9</version>
</dependency>

2.application.properties 配置文件

# mybatis
mybatis.type-aliases-package=github.zero.miaosha.domain
mybatis.configuration.map-underscore-to-camel-case=true
mybatis.configuration.default-fetch-size=100
mybatis.configuration.default-statement-timeout=3000
mybatis.mapperLocations = classpath:github/zero/miaosha/dao/*.xml
# druid
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/miaosha?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.filters=stat
spring.datasource.maxActive=2
spring.datasource.initialSize=1
spring.datasource.maxWait=60000
spring.datasource.minIdle=1
spring.datasource.timeBetweenEvictionRunsMillis=60000
spring.datasource.minEvictableIdleTimeMillis=300000
spring.datasource.validationQuery=select 'x'
spring.datasource.testWhileIdle=true
spring.datasource.testOnBorrow=false
spring.datasource.testOnReturn=false
spring.datasource.poolPreparedStatements=true
spring.datasource.maxOpenPreparedStatements=20

三、集成redis

1.安装：redis

将 redis 设置为服务，在 utils 目录下执行 ./install_server.sh

//依次输入以下
/usr/local/redis/redis.conf
/usr/local/redis/redis.log
/usr/local/redis/data
/usr/local/redis/bin/redis-server
//查看是否成功x'm'lxml
chkconfig --list | grep redis

2.添加依赖

<dependency>
  <groupId>redis.clients</groupId>
  <artifactId>jedis</artifactId>
</dependency>
<dependency>
  <groupId>com.alibaba</groupId>
  <artifactId>fastjson</artifactId>
  <version>1.1.37</version>
</dependency>

3.application.properties 配置文件

redis.host=192.168.63.130
redis.port=6379
redis.timeout=3
redis.password=123456
redis.poolMaxTotal=10
redis.poolMaxIdle=10
redis.poolMaxWait=3

4.编写配置类 RedisConfig

@Component
@ConfigurationProperties(prefix = "redis")
@Getter
public class RedisConfig {
    private String host;
    private int port;
    private int timeout;
    private String password;
    private int poolMaxTotal;
    private int poolMaxIdle;
    private int poolMaxWait;
}

5.编写 JedisPool 工厂类

@Service
public class RedisPoolFactory {

    @Autowired
    RedisConfig redisConfig;

    @Bean
    public JedisPool jedisPoolFatory(){
        JedisPoolConfig poolConfig = new JedisPoolConfig();
        poolConfig.setMaxIdle(redisConfig.getPoolMaxIdle());
        poolConfig.setMaxTotal(redisConfig.getPoolMaxTotal());
        poolConfig.setMaxWaitMillis(redisConfig.getPoolMaxWait());
        JedisPool jedisPool = new JedisPool(poolConfig,
                redisConfig.getHost(),redisConfig.getPort(),
                redisConfig.getTimeout()*1000,redisConfig.getPassword(),0);
        return jedisPool;
    }
}

6.编写 RedisService类

@Service
public class RedisService {

    @Autowired
    JedisPool jedisPool;

    /**
     * 获取单个对象
     * @param prefix 前缀
     * @param key
     * @param clazz
     * @param <T>
     * @return
     */
    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
     * @param prefix
     * @param key
     * @param value
     * @param <T>
     * @return
     */
    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() <= 0) {
                return false;
            }
            //生成真正的key
            String realkey = prefix.getPrefix() + key;
            int seconds = prefix.expireSeconds();
            if (seconds <= 0){
                jedis.set(realkey, str);
            }else {
                jedis.setex(realkey,seconds,str);
            }
            return true;
        } finally {
            returnToPool(jedis);
        }
    }

    /**
     * 判断key是否存在
     * @param prefix
     * @param key
     * @param <T>
     * @return
     */
    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
     * @param prefix
     * @param key
     * @param <T>
     * @return
     */
    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
     * @param prefix
     * @param key
     * @param <T>
     * @return
     */
    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() <= 0 || 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();
        }
    }
}