spring Boot在接口中注入无效 ： 配置报错 

工具用 intellij idea，框架是spring boot,在接口下用 @value注入无效。代码如下：

public interface FrontDeskConfig {

@Value("${FRONT_DESK_LRUMAP_SIZE}")
static final int FRONT_DESK_LRUMAP_SIZE=20000;

@Value("${FRONT_DESK_LRUMAP_SIZE}")
static final int FRONT_DESK_BLOCK_QUEUE_SIZE=20000;

@Value("${FRONT_DESK_WORKER_SIZE}")
static final int FRONT_DESK_WORKER_SIZE=20;

@Value("${FRONT_DESK_BOSS_SIZE}")
static final int FRONT_DESK_BOSS_SIZE=10;

@Value("${FRONT_DESK_FRAME_SIZE}")
static final int FRONT_DESK_FRAME_SIZE = 8192;

@Value("${FRONT_DESK_HOST}")
static final String FRONT_DESK_HOST = "127.0.0.1";

@Value("${FRONT_DESK_PORT}")
static final int FRONT_DESK_PORT = 18080;

@Value("${FRONT_DESK_CONNECT_TIMEOUT}")
static final int FRONT_DESK_CONNECT_TIMEOUT = 3000;

@Value("${FRONT_DESK_READ_TIMEOUT}")
static final int FRONT_DESK_READ_TIMEOUT = 3000;

@Value("${FRONT_DESK_WRITE_TIMEOUT}")
static final int FRONT_DESK_WRITE_TIMEOUT = 3000;

@Value("${FRONT_DESK_ALL_TIMEOUT}")
static final int FRONT_DESK_ALL_TIMEOUT = 8000;

@Value("${FRONT_DESK_SO_SNDBUF}")
static final int FRONT_DESK_SO_SNDBUF = 1048576;

@Value("${FRONT_DESK_SO_RCVBUF}")
static final int FRONT_DESK_SO_RCVBUF = 1048576;

@Value("${FRONT_DESK_SO_BACKLOG}")
static final int FRONT_DESK_SO_BACKLOG = 10000;

@Value("${FRONT_DESK_QUEUE_SIZE}")
static final int FRONT_DESK_QUEUE_SIZE = 20000;

@Value("${FRONT_DESK_QUEUE_WAIT_TIMEOUT}")
static final int FRONT_DESK_QUEUE_WAIT_TIMEOUT = 1000;

@Value("${FRONT_DESK_HEARTBEAT_INTERVAL}")
static final int FRONT_DESK_HEARTBEAT_INTERVAL = 5000;

@Value("${FRONT_DESK_POOL_SIZE}")
static final int FRONT_DESK_POOL_SIZE = 16;

@Value("${FRONT_DESK_POOL_QUIT_TIMEOUT}")
static final int FRONT_DESK_POOL_QUIT_TIMEOUT = 60000;

@Value("${FRONT_DESK_WORK_ID}")
static final int FRONT_DESK_WORK_ID = 0;

@Value("${FRONT_DESK_DATA_CENTER_ID}")
static final int FRONT_DESK_DATA_CENTER_ID = 0;

@Value("${FRONT_DESK_CHANGE_TIMES}")
static final int FRONT_DESK_CHANGE_TIMES = 50000;

@Value("${FRONT_DESK_PINGPONG_TIMES}")
static final int FRONT_DESK_PINGPONG_TIMES = 100;

}