1.场景
通过aop实现接口一段时间内的重复性访问
2.
配置
应用
3.编码实现
注解实现
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Inherited
public @interface LimitSubmit {
String key() ;
/**
* 默认 10s
*/
int limit() default 7200;
/**
* 请求完成后 是否一直等待
* true则等待
* @return
*/
boolean needAllWait() default true;
}
aop实现
@Component
@Aspect
@Slf4j
public class LimitSubmitAspect {
//封装了redis操作各种方法
@Autowired
private RedisUtil redisUtil;
@Pointcut("@annotation(org.jeecg.common.interfaceSub.LimitSubmit)")
private void pointcut() {
}
@Pointcut("@annotation(org.jeecg.common.interfaceSub.LimitSubmit)")
private void pointcut1() {
}
@Around("pointcut()")
public Object handleSubmit(ProceedingJoinPoint joinPoint) throws Throwable {
LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
//获取注解信息
LimitSubmit limitSubmit = method.getAnnotation(LimitSubmit.class);
boolean needAllWait = limitSubmit.needAllWait();
String redisKey = limitSubmit.key();
int submitTimeLimiter = limitSubmit.limit();
String key = getRedisKey(joinPoint, redisKey, sysUser);
Object result = redisUtil.get(key);
log.info("开始锁定资源信息" + key);
if (result != null) {
log.info("锁定的值是" + result.toString());
throw new RepeatCommitException("正在处理中, 请勿重复操作");
}
boolean setResult = redisUtil.setIfAbsent(key, String.valueOf(System.currentTimeMillis()), submitTimeLimiter);
if (!setResult) {
throw new RepeatCommitException("1正在处理中, 请勿重复操作");
}
try {
Object proceed = joinPoint.proceed();
return proceed;
} catch (Throwable e) {
log.error("Exception in {}.{}() with cause = \'{}\' and exception = \'{}\'", joinPoint.getSignature().getDeclaringTypeName(),
joinPoint.getSignature().getName(), e.getCause() != null ? e.getCause() : "NULL", e.getMessage(), e);
throw e;
} finally {
if (!needAllWait) {
redisUtil.del(redisKey);
log.info("删除后的结果: " + redisUtil.get(redisKey));
}
}
}
@AfterReturning("pointcut1()")
public void AfterReturning(JoinPoint joinPoint) {
LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
LimitSubmit limitSubmit = method.getAnnotation(LimitSubmit.class);
String redisKey = limitSubmit.key();
String key = getRedisKey1(joinPoint, redisKey, sysUser);
log.info("正常释放了锁资源" + key);
// 延时 1s 释放
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
redisUtil.del(key);
log.info("删除后的结果: " + redisUtil.get(redisKey));
}
}
@AfterThrowing(pointcut = "pointcut1()", throwing = "ex")
public void AfterThrowing(JoinPoint joinPoint, Throwable ex) {
if (!(ex instanceof RepeatCommitException)) {
// 抛出的如果不是重复性提交的异常, 则释放锁资源
LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
LimitSubmit limitSubmit = method.getAnnotation(LimitSubmit.class);
String redisKey = limitSubmit.key();
String key = getRedisKey1(joinPoint, redisKey, sysUser);
log.info("发生异常释放了锁资源" + key);
// 延时 1s 释放
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
} finally {
redisUtil.del(key);
log.info("删除后的结果: " + redisUtil.get(redisKey));
}
}
}
/**
* 支持多参数,从请求参数进行处理
*/
private String getRedisKey(ProceedingJoinPoint joinPoint, String key, LoginUser sysUser) {
if (key.contains("%s") && sysUser != null) {
key = String.format(key, sysUser.getId());
}
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
LocalVariableTableParameterNameDiscoverer discoverer = new LocalVariableTableParameterNameDiscoverer();
String[] parameterNames = discoverer.getParameterNames(method);
if (parameterNames != null) {
for (int i = 0; i < parameterNames.length; i++) {
String item = parameterNames[i];
if (key.contains("#" + item)) {
key = key.replace("#" + item, joinPoint.getArgs()[i].toString());
}
}
}
return key.toString();
}
private String getRedisKey1(JoinPoint joinPoint, String key, LoginUser sysUser) {
if (key.contains("%s") && sysUser != null) {
key = String.format(key, sysUser.getId());
}
Method method = ((MethodSignature) joinPoint.getSignature()).getMethod();
LocalVariableTableParameterNameDiscoverer discoverer = new LocalVariableTableParameterNameDiscoverer();
String[] parameterNames = discoverer.getParameterNames(method);
if (parameterNames != null) {
for (int i = 0; i < parameterNames.length; i++) {
String item = parameterNames[i];
if (key.contains("#" + item)) {
key = key.replace("#" + item, joinPoint.getArgs()[i].toString());
}
}
}
return key.toString();
}
}
redis工具类
@Component
public class RedisUtil {
@Autowired
private RedisTemplate<String, Object> redisTemplate;
@Autowired
private StringRedisTemplate stringRedisTemplate;
private static final Integer is_show_time = 60 * 60 * 24;
/**
* 指定缓存失效时间
*
* @param key 键
* @param time 时间(秒)
* @return
*/
public boolean expire(String key, long time) {
try {
if (time > 0) {
redisTemplate.expire(key, time, TimeUnit.SECONDS);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 根据key 获取过期时间
*
* @param key 键 不能为null
* @return 时间(秒) 返回0代表为永久有效
*/
public long getExpire(String key) {
return redisTemplate.getExpire(key, TimeUnit.SECONDS);
}
/**
* 判断key是否存在
*
* @param key 键
* @return true 存在 false不存在
*/
public boolean hasKey(String key) {
try {
return redisTemplate.hasKey(key);
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 删除缓存
*
* @param key 可以传一个值 或多个
*/
@SuppressWarnings("unchecked")
public void del(String... key) {
if (key != null && key.length > 0) {
if (key.length == 1) {
redisTemplate.delete(key[0]);
} else {
redisTemplate.delete(CollectionUtils.arrayToList(key));
}
}
}
// ============================String=============================
/**
* 普通缓存获取
*
* @param key 键
* @return 值
*/
public Object get(String key) {
return key == null ? null : redisTemplate.opsForValue().get(key);
}
/**
* 普通缓存放入
*
* @param key 键
* @param value 值
* @return true成功 false失败
*/
public boolean set(String key, Object value) {
try {
redisTemplate.opsForValue().set(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 普通缓存放入并设置时间
*
* @param key 键
* @param value 值
* @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期
* @return true成功 false 失败
*/
public boolean set(String key, Object value, long time) {
try {
if (time > 0) {
redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS);
} else {
set(key, value);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 递增
*
* @param key 键
* @param by 要增加几(大于0)
* @return
*/
public long incr(String key, long delta) {
if (delta < 0) {
throw new RuntimeException("递增因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, delta);
}
/**
* 递减
*
* @param key 键
* @param by 要减少几(小于0)
* @return
*/
public long decr(String key, long delta) {
if (delta < 0) {
throw new RuntimeException("递减因子必须大于0");
}
return redisTemplate.opsForValue().increment(key, -delta);
}
// ================================Map=================================
/**
* HashGet
*
* @param key 键 不能为null
* @param item 项 不能为null
* @return 值
*/
public Object hget(String key, String item) {
return redisTemplate.opsForHash().get(key, item);
}
/**
* 获取hashKey对应的所有键值
*
* @param key 键
* @return 对应的多个键值
*/
public Map<Object, Object> hmget(String key) {
return redisTemplate.opsForHash().entries(key);
}
/**
* HashSet
*
* @param key 键
* @param map 对应多个键值
* @return true 成功 false 失败
*/
public boolean hmset(String key, Map<String, Object> map) {
try {
redisTemplate.opsForHash().putAll(key, map);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* HashSet 并设置时间
*
* @param key 键
* @param map 对应多个键值
* @param time 时间(秒)
* @return true成功 false失败
*/
public boolean hmset(String key, Map<String, Object> map, long time) {
try {
redisTemplate.opsForHash().putAll(key, map);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 向一张hash表中放入数据,如果不存在将创建
*
* @param key 键
* @param item 项
* @param value 值
* @return true 成功 false失败
*/
public boolean hset(String key, String item, Object value) {
try {
redisTemplate.opsForHash().put(key, item, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 向一张hash表中放入数据,如果不存在将创建
*
* @param key 键
* @param item 项
* @param value 值
* @param time 时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间
* @return true 成功 false失败
*/
public boolean hset(String key, String item, Object value, long time) {
try {
redisTemplate.opsForHash().put(key, item, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 删除hash表中的值
*
* @param key 键 不能为null
* @param item 项 可以使多个 不能为null
*/
public void hdel(String key, Object... item) {
redisTemplate.opsForHash().delete(key, item);
}
/**
* 判断hash表中是否有该项的值
*
* @param key 键 不能为null
* @param item 项 不能为null
* @return true 存在 false不存在
*/
public boolean hHasKey(String key, String item) {
return redisTemplate.opsForHash().hasKey(key, item);
}
/**
* hash递增 如果不存在,就会创建一个 并把新增后的值返回
*
* @param key 键
* @param item 项
* @param by 要增加几(大于0)
* @return
*/
public double hincr(String key, String item, double by) {
return redisTemplate.opsForHash().increment(key, item, by);
}
/**
* hash递减
*
* @param key 键
* @param item 项
* @param by 要减少记(小于0)
* @return
*/
public double hdecr(String key, String item, double by) {
return redisTemplate.opsForHash().increment(key, item, -by);
}
// ============================set=============================
/**
* 根据key获取Set中的所有值
*
* @param key 键
* @return
*/
public Set<Object> sGet(String key) {
try {
return redisTemplate.opsForSet().members(key);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 根据value从一个set中查询,是否存在
*
* @param key 键
* @param value 值
* @return true 存在 false不存在
*/
public boolean sHasKey(String key, Object value) {
try {
return redisTemplate.opsForSet().isMember(key, value);
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将数据放入set缓存
*
* @param key 键
* @param values 值 可以是多个
* @return 成功个数
*/
public long sSet(String key, Object... values) {
try {
return redisTemplate.opsForSet().add(key, values);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 将set数据放入缓存
*
* @param key 键
* @param time 时间(秒)
* @param values 值 可以是多个
* @return 成功个数
*/
public long sSetAndTime(String key, long time, Object... values) {
try {
Long count = redisTemplate.opsForSet().add(key, values);
if (time > 0) {
expire(key, time);
}
return count;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 获取set缓存的长度
*
* @param key 键
* @return
*/
public long sGetSetSize(String key) {
try {
return redisTemplate.opsForSet().size(key);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 移除值为value的
*
* @param key 键
* @param values 值 可以是多个
* @return 移除的个数
*/
public long setRemove(String key, Object... values) {
try {
Long count = redisTemplate.opsForSet().remove(key, values);
return count;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
// ===============================list=================================
/**
* 获取list缓存的内容
*
* @param key 键
* @param start 开始
* @param end 结束 0 到 -1代表所有值
* @return
*/
public List<Object> lGet(String key, long start, long end) {
try {
return redisTemplate.opsForList().range(key, start, end);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 获取list缓存的长度
*
* @param key 键
* @return
*/
public long lGetListSize(String key) {
try {
return redisTemplate.opsForList().size(key);
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* 通过索引 获取list中的值
*
* @param key 键
* @param index 索引 index>=0时, 0 表头,1 第二个元素,依次类推;index<0时,-1,表尾,-2倒数第二个元素,依次类推
* @return
*/
public Object lGetIndex(String key, long index) {
try {
return redisTemplate.opsForList().index(key, index);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, Object value) {
try {
redisTemplate.opsForList().rightPush(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, Object value, long time) {
try {
redisTemplate.opsForList().rightPush(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, List<Object> value) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 将list放入缓存
*
* @param key 键
* @param value 值
* @param time 时间(秒)
* @return
*/
public boolean lSet(String key, List<Object> value, long time) {
try {
redisTemplate.opsForList().rightPushAll(key, value);
if (time > 0) {
expire(key, time);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 根据索引修改list中的某条数据
*
* @param key 键
* @param index 索引
* @param value 值
* @return
*/
public boolean lUpdateIndex(String key, long index, Object value) {
try {
redisTemplate.opsForList().set(key, index, value);
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
/**
* 移除N个值为value
*
* @param key 键
* @param count 移除多少个
* @param value 值
* @return 移除的个数
*/
public long lRemove(String key, long count, Object value) {
try {
Long remove = redisTemplate.opsForList().remove(key, count, value);
return remove;
} catch (Exception e) {
e.printStackTrace();
return 0;
}
}
/**
* @Description 上锁并设置过期时间
* @Date 15:09 2023/7/7
* @Param [key, value, time]
* @return boolean
**/
public boolean setIfAbsent(String key, Object value, long time) {
try {
return redisTemplate.opsForValue().setIfAbsent(key, value, time, TimeUnit.SECONDS);
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
}
3.应用
在正常的controller上加上接口限制访问注解
@ApiOperation("套装商品管理-新增套装商品")
@PostMapping(value = "/saveSuitCommodity")
@LimitSubmit(key = "saveSuitCommodityByButton:%s")
public Result<?> saveSuitCommodity(@RequestBody SuitCommodityVO suitCommodity) {
Result<Object> result = new Result<>();
suitCommodity.setCreateUser(getUserId());
suitCommodity.setCreateUserName(getUser().getRealname());
suitCommodity.setCreateTime(new Date());
/**
* 往销售渠道 list中加入创建信息 用于新增销售渠道表数据
*/
for (TPrdCommoditySaleNetworkEntity tPrdCommoditySaleNetworkEntity : suitCommodity.getSaleList()) {
tPrdCommoditySaleNetworkEntity.setCreateUser(getUserId());
tPrdCommoditySaleNetworkEntity.setCreateUserName(getUser().getRealname());
tPrdCommoditySaleNetworkEntity.setCreateTime(new Date());
}
Map<String, String> map = tPrdCommodityService.addSuitCommodity(suitCommodity);
if ("200".equals(map.get("code"))) {
result.setMessage(map.get("message"));
result.setResult(map);
return result;
} else {
return result.error500(map.get("message"));
}
}