SpringBoot基于redis自定義注解實現(xiàn)后端接口防重復(fù)提交校驗
更新時間：2022年01月27日 08:39:22 作者：拒絕熬夜啊
本文主要介紹了SpringBoot基于redis自定義注解實現(xiàn)后端接口防重復(fù)提交校驗，文中通過示例代碼介紹的非常詳細，具有一定的參考價值，感興趣的小伙伴們可以參考一下
一、添加依賴
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-redis</artifactId>
<version>1.4.4.RELEASE</version>
</dependency>
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>3.6.3</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.75</version>
</dependency>
二、代碼實現(xiàn)
1.構(gòu)建可重復(fù)讀取inputStream的request
package com.hl.springbootrepetitionsubmit.servlet;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.nio.charset.StandardCharsets;
/**
* 構(gòu)建可重復(fù)讀取inputStream的request
*/
public class RepeatedlyRequestWrapper extends HttpServletRequestWrapper {
private final String body;
public RepeatedlyRequestWrapper(HttpServletRequest request, ServletResponse response) throws IOException {
super(request);
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
body = getBodyString(request);
}
@Override
public BufferedReader getReader() throws IOException {
return new BufferedReader(new InputStreamReader(getInputStream()));
}
public String getBody() {
return body;
}
@Override
public ServletInputStream getInputStream() throws IOException {
final ByteArrayInputStream bais = new ByteArrayInputStream(body.getBytes(StandardCharsets.UTF_8));
return new ServletInputStream() {
@Override
public int read() throws IOException {
return bais.read();
}
@Override
public int available() throws IOException {
return body.length();
}
@Override
public boolean isFinished() {
return false;
}
@Override
public boolean isReady() {
return false;
}
@Override
public void setReadListener(ReadListener readListener) {
}
};
}
/**
* 獲取Request請求body內(nèi)容
*
* @param request
* @return
*/
private String getBodyString(ServletRequest request) {
StringBuilder sb = new StringBuilder();
BufferedReader reader = null;
try (InputStream inputStream = request.getInputStream()) {
reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.UTF_8));
String line = "";
while ((line = reader.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return sb.toString();
}
}
2.重寫request
package com.hl.springbootrepetitionsubmit.filter;
import com.hl.springbootrepetitionsubmit.servlet.RepeatedlyRequestWrapper;
import org.springframework.http.MediaType;
import org.springframework.util.StringUtils;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
/**
* 過濾器（重寫request）
*/
public class RepeatableFilter implements Filter {
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
ServletRequest requestWrapper = null;
//將原生的request變?yōu)榭芍貜?fù)讀取inputStream的request
if (request instanceof HttpServletRequest
&& StringUtils.startsWithIgnoreCase(request.getContentType(), MediaType.APPLICATION_JSON_VALUE)) {
requestWrapper = new RepeatedlyRequestWrapper((HttpServletRequest) request, response);
}
if (null == requestWrapper) {
chain.doFilter(request, response);
} else {
chain.doFilter(requestWrapper, response);
}
}
}
3.自定義注解
/**
* 自定義注解防止表單重復(fù)提交
*/
@Inherited
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface RepeatSubmit {
}
4.創(chuàng)建防止重復(fù)提交攔截器
package com.hl.springbootrepetitionsubmit.interceptor;
import cn.hutool.core.util.StrUtil;
import com.alibaba.fastjson.JSONObject;
import com.hl.springbootrepetitionsubmit.annotation.RepeatSubmit;
import com.hl.springbootrepetitionsubmit.config.RedisUtil;
import com.hl.springbootrepetitionsubmit.servlet.RepeatedlyRequestWrapper;
import org.springframework.beans.factory.annotation.*;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import javax.servlet.http.*;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.*;
import java.util.concurrent.TimeUnit;
/**
* 防止重復(fù)提交攔截器
*/
@Component
public class RepeatSubmitInterceptor implements HandlerInterceptor {
public final String REPEAT_PARAMS = "repeatParams";
public final String REPEAT_TIME = "repeatTime";
/**
* 防重提交 redis key
*/
public final String REPEAT_SUBMIT_KEY = "repeat_submit:";
// 令牌自定義標識
@Value("${token.header}")
private String header;
@Autowired
private RedisUtil redisUtil;
/**
* 間隔時間，單位:秒
* <p>
* 兩次相同參數(shù)的請求，如果間隔時間大于該參數(shù)，系統(tǒng)不會認定為重復(fù)提交的數(shù)據(jù)
*/
@Value("${repeatSubmit.intervalTime}")
private int intervalTime;
@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (handler instanceof HandlerMethod) {
HandlerMethod handlerMethod = (HandlerMethod) handler;
Method method = handlerMethod.getMethod();
RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
if (annotation != null) {
if (this.isRepeatSubmit(request)) {
//返回重復(fù)提交提示
Map<String, Object> resultMap = new HashMap<>();
resultMap.put("code", "500");
resultMap.put("msg", request.getRequestURI() + "不允許重復(fù)提交，請稍后再試");
try {
response.setStatus(200);
response.setContentType("application/json");
response.setCharacterEncoding("utf-8");
response.getWriter().print(JSONObject.toJSONString(resultMap));
} catch (IOException e) {
e.printStackTrace();
}
return false;
}
}
return true;
} else {
return preHandle(request, response, handler);
}
}
/**
* 驗證是否重復(fù)提交由子類實現(xiàn)具體的防重復(fù)提交的規(guī)則
*/
public boolean isRepeatSubmit(HttpServletRequest request) {
String nowParams = "";
if (request instanceof RepeatedlyRequestWrapper) {
RepeatedlyRequestWrapper repeatedlyRequest = (RepeatedlyRequestWrapper) request;
nowParams = repeatedlyRequest.getBody();
}
// body參數(shù)為空，獲取Parameter的數(shù)據(jù)
if (StrUtil.isBlank(nowParams)) {
nowParams = JSONObject.toJSONString(request.getParameterMap());
}
Map<String, Object> nowDataMap = new HashMap<String, Object>();
nowDataMap.put(REPEAT_PARAMS, nowParams);
nowDataMap.put(REPEAT_TIME, System.currentTimeMillis());
// 請求地址（作為存放cache的key值）
String url = request.getRequestURI();
// 唯一值（沒有消息頭則使用請求地址）
String submitKey = request.getHeader(header);
if (StrUtil.isBlank(submitKey)) {
submitKey = url;
}
// 唯一標識（指定key + 消息頭）
String cacheRepeatKey = REPEAT_SUBMIT_KEY + submitKey;
Object sessionObj = redisUtil.getCacheObject(cacheRepeatKey);
if (sessionObj != null) {
Map<String, Object> sessionMap = (Map<String, Object>) sessionObj;
if (sessionMap.containsKey(url)) {
Map<String, Object> preDataMap = (Map<String, Object>) sessionMap.get(url);
if (compareParams(nowDataMap, preDataMap) && compareTime(nowDataMap, preDataMap)) {
return true;
}
}
}
Map<String, Object> cacheMap = new HashMap<String, Object>();
cacheMap.put(url, nowDataMap);
redisUtil.setCacheObject(cacheRepeatKey, cacheMap, intervalTime, TimeUnit.SECONDS);
return false;
}
/**
* 判斷參數(shù)是否相同
*/
private boolean compareParams(Map<String, Object> nowMap, Map<String, Object> preMap) {
String nowParams = (String) nowMap.get(REPEAT_PARAMS);
String preParams = (String) preMap.get(REPEAT_PARAMS);
return nowParams.equals(preParams);
}
/**
* 判斷兩次間隔時間
*/
private boolean compareTime(Map<String, Object> nowMap, Map<String, Object> preMap) {
long time1 = (Long) nowMap.get(REPEAT_TIME);
long time2 = (Long) preMap.get(REPEAT_TIME);
if ((time1 - time2) < (this.intervalTime * 1000L)) {
return true;
}
return false;
}
}
5.redis配置
package com.hl.springbootrepetitionsubmit.config;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisStandaloneConfiguration;
import org.springframework.data.redis.connection.jedis.JedisClientConfiguration;
import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;
import java.time.Duration;
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
//配置redis的過期時間
private static final Duration TIME_TO_LIVE = Duration.ZERO;
@Bean(name = "jedisPoolConfig")
public JedisPoolConfig jedisPoolConfig() {
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
//控制一個pool可分配多少個jedis實例
jedisPoolConfig.setMaxTotal(500);
//最大空閑數(shù)
jedisPoolConfig.setMaxIdle(200);
//每次釋放連接的最大數(shù)目，默認是3
jedisPoolConfig.setNumTestsPerEvictionRun(1024);
//逐出掃描的時間間隔(毫秒) 如果為負數(shù),則不運行逐出線程, 默認-1
jedisPoolConfig.setTimeBetweenEvictionRunsMillis(30000);
//連接的最小空閑時間 默認1800000毫秒(30分鐘)
jedisPoolConfig.setMinEvictableIdleTimeMillis(-1);
jedisPoolConfig.setSoftMinEvictableIdleTimeMillis(10000);
//最大建立連接等待時間。如果超過此時間將接到異常。設(shè)為-1表示無限制。
jedisPoolConfig.setMaxWaitMillis(1500);
jedisPoolConfig.setTestOnBorrow(true);
jedisPoolConfig.setTestWhileIdle(true);
jedisPoolConfig.setTestOnReturn(false);
jedisPoolConfig.setJmxEnabled(true);
jedisPoolConfig.setBlockWhenExhausted(false);
return jedisPoolConfig;
}
@Bean("connectionFactory")
public JedisConnectionFactory connectionFactory() {
RedisStandaloneConfiguration redisStandaloneConfiguration = new RedisStandaloneConfiguration();
redisStandaloneConfiguration.setHostName("127.0.0.1");
redisStandaloneConfiguration.setDatabase(0);
// redisStandaloneConfiguration.setPassword(RedisPassword.of("123456"));
redisStandaloneConfiguration.setPort(6379);
//獲得默認的連接池構(gòu)造器
JedisClientConfiguration.JedisPoolingClientConfigurationBuilder jpcb =
(JedisClientConfiguration.JedisPoolingClientConfigurationBuilder) JedisClientConfiguration.builder();
//指定jedisPoolConifig來修改默認的連接池構(gòu)造器（真麻煩，濫用設(shè)計模式?。?
jpcb.poolConfig(jedisPoolConfig());
//通過構(gòu)造器來構(gòu)造jedis客戶端配置
JedisClientConfiguration jedisClientConfiguration = jpcb.build();
//單機配置 + 客戶端配置 = jedis連接工廠
return new JedisConnectionFactory(redisStandaloneConfiguration, jedisClientConfiguration);
}
@Bean("jedisPool")
public JedisPool jedisPool(){
return new JedisPool(jedisPoolConfig(),"127.0.0.1",6379);
}
@Bean
public RedisTemplate<Object, Object> redisTemplate(JedisConnectionFactory connectionFactory) {
RedisTemplate<Object, Object> redisTemplate = new RedisTemplate<>();
redisTemplate.setConnectionFactory(connectionFactory);
GenericJackson2JsonRedisSerializer jackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
redisTemplate.setKeySerializer(new StringRedisSerializer());
redisTemplate.setHashKeySerializer(new StringRedisSerializer());
redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);
redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);
//初始化參數(shù)和初始化工作
redisTemplate.afterPropertiesSet();
return redisTemplate;
}
/**
* 緩存對象集合中，緩存是以key-value形式保存的,
* 當不指定緩存的key時，SpringBoot會使用keyGenerator生成Key。
*/
@Override
@Bean
public KeyGenerator keyGenerator() {
return (target, method, params) -> {
StringBuilder sb = new StringBuilder();
//類名+方法名
sb.append(target.getClass().getName());
sb.append(method.getName());
for (Object obj : params) {
sb.append(obj.toString());
}
return sb.toString();
};
}
/**
* 緩存管理器
* @param connectionFactory 連接工廠
* @return cacheManager
*/
@Bean
public CacheManager cacheManager(JedisConnectionFactory connectionFactory) {
//新建一個Jackson2JsonRedis的redis存儲的序列化方式
GenericJackson2JsonRedisSerializer genericJackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer();
//解決查詢緩存轉(zhuǎn)換異常的問題
// 配置序列化（解決亂碼的問題）
//entryTtl設(shè)置過期時間
//serializeValuesWith設(shè)置redis存儲的序列化方式
RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(TIME_TO_LIVE)
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(genericJackson2JsonRedisSerializer))
.disableCachingNullValues();
//定義要返回的redis緩存管理對象
return RedisCacheManager.builder(connectionFactory).cacheDefaults(config).build();
}
}
6.redis工具類
package com.hl.springbootrepetitionsubmit.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.BoundSetOperations;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Component;
import java.util.*;
import java.util.concurrent.TimeUnit;
@Component
public class RedisUtil {
@Autowired
private RedisTemplate redisTemplate;
/**
* 緩存基本的對象，Integer、String、實體類等
*
* @param key 緩存的鍵值
* @param value 緩存的值
*/
public <T> void setCacheObject(final String key, final T value) {
redisTemplate.opsForValue().set(key, value);
}
/**
* 緩存基本的對象，Integer、String、實體類等
*
* @param key 緩存的鍵值
* @param value 緩存的值
* @param timeout 時間
* @param timeUnit 時間顆粒度
*/
public <T> void setCacheObject(final String key, final T value, final Integer timeout, final TimeUnit timeUnit) {
redisTemplate.opsForValue().set(key, value, timeout, timeUnit);
}
/**
* 設(shè)置有效時間
*
* @param key Redis鍵
* @param timeout 超時時間
* @return true=設(shè)置成功；false=設(shè)置失敗
*/
public boolean expire(final String key, final long timeout) {
return expire(key, timeout, TimeUnit.SECONDS);
}
/**
* 設(shè)置有效時間
*
* @param key Redis鍵
* @param timeout 超時時間
* @param unit 時間單位
* @return true=設(shè)置成功；false=設(shè)置失敗
*/
public boolean expire(final String key, final long timeout, final TimeUnit unit) {
return redisTemplate.expire(key, timeout, unit);
}
/**
* 獲得緩存的基本對象。
*
* @param key 緩存鍵值
* @return 緩存鍵值對應(yīng)的數(shù)據(jù)
*/
public <T> T getCacheObject(final String key) {
ValueOperations<String, T> operation = redisTemplate.opsForValue();
return operation.get(key);
}
/**
* 刪除單個對象
*
* @param key
*/
public boolean deleteObject(final String key) {
return redisTemplate.delete(key);
}
/**
* 刪除集合對象
*
* @param collection 多個對象
* @return
*/
public long deleteObject(final Collection collection) {
return redisTemplate.delete(collection);
}
/**
* 緩存List數(shù)據(jù)
*
* @param key 緩存的鍵值
* @param dataList 待緩存的List數(shù)據(jù)
* @return 緩存的對象
*/
public <T> long setCacheList(final String key, final List<T> dataList) {
Long count = redisTemplate.opsForList().rightPushAll(key, dataList);
return count == null ? 0 : count;
}
/**
* 獲得緩存的list對象
*
* @param key 緩存的鍵值
* @return 緩存鍵值對應(yīng)的數(shù)據(jù)
*/
public <T> List<T> getCacheList(final String key) {
return redisTemplate.opsForList().range(key, 0, -1);
}
/**
* 緩存Set
*
* @param key 緩存鍵值
* @param dataSet 緩存的數(shù)據(jù)
* @return 緩存數(shù)據(jù)的對象
*/
public <T> BoundSetOperations<String, T> setCacheSet(final String key, final Set<T> dataSet) {
BoundSetOperations<String, T> setOperation = redisTemplate.boundSetOps(key);
Iterator<T> it = dataSet.iterator();
while (it.hasNext()) {
setOperation.add(it.next());
}
return setOperation;
}
/**
* 獲得緩存的set
*
* @param key
* @return
*/
public <T> Set<T> getCacheSet(final String key) {
return redisTemplate.opsForSet().members(key);
}
/**
* 緩存Map
*
* @param key
* @param dataMap
*/
public <T> void setCacheMap(final String key, final Map<String, T> dataMap) {
if (dataMap != null) {
redisTemplate.opsForHash().putAll(key, dataMap);
}
}
/**
* 獲得緩存的Map
*
* @param key
* @return
*/
public <T> Map<String, T> getCacheMap(final String key) {
return redisTemplate.opsForHash().entries(key);
}
/**
* 往Hash中存入數(shù)據(jù)
*
* @param key Redis鍵
* @param hKey Hash鍵
* @param value 值
*/
public <T> void setCacheMapValue(final String key, final String hKey, final T value) {
redisTemplate.opsForHash().put(key, hKey, value);
}
/**
* 獲取Hash中的數(shù)據(jù)
*
* @param key Redis鍵
* @param hKey Hash鍵
* @return Hash中的對象
*/
public <T> T getCacheMapValue(final String key, final String hKey) {
HashOperations<String, String, T> opsForHash = redisTemplate.opsForHash();
return opsForHash.get(key, hKey);
}
/**
* 獲取多個Hash中的數(shù)據(jù)
*
* @param key Redis鍵
* @param hKeys Hash鍵集合
* @return Hash對象集合
*/
public <T> List<T> getMultiCacheMapValue(final String key, final Collection<Object> hKeys) {
return redisTemplate.opsForHash().multiGet(key, hKeys);
}
/**
* 獲得緩存的基本對象列表
*
* @param pattern 字符串前綴
* @return 對象列表
*/
public Collection<String> keys(final String pattern) {
return redisTemplate.keys(pattern);
}
}
7.配置攔截器
/**
* 防重復(fù)提交配置
*/
@Configuration
public class RepeatSubmitConfig implements WebMvcConfigurer {
@Autowired
private RepeatSubmitInterceptor repeatSubmitInterceptor;
/**
* 添加防重復(fù)提交攔截
*/
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(repeatSubmitInterceptor).addPathPatterns("/**");
}
/**
* 生成防重復(fù)提交過濾器（重寫request）
* @return FilterRegistrationBean
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
@Bean
public FilterRegistrationBean<?> createRepeatableFilter() {
FilterRegistrationBean registration = new FilterRegistrationBean();
registration.setFilter(new RepeatableFilter());
registration.addUrlPatterns("/*");
registration.setName("repeatableFilter");
registration.setOrder(FilterRegistrationBean.LOWEST_PRECEDENCE);
return registration;
}
}
8.controller
@RestController
@RequestMapping("/repeatSubmit")
public class RepeatSubmitController {
/**
* 保存Param
* @param name
* @return
*/
@RepeatSubmit
@PostMapping("/saveParam/{name}")
public String saveParam(@PathVariable("name")String name){
return "保存Param成功";
}
/**
* 保存Param
* @param name
* @return
*/
@RepeatSubmit
@PostMapping("/saveBody")
public String saveBody(@RequestBody List<String> name){
return "保存Body成功";
}
}
三、測試
param傳參：
body傳參：
到此這篇關(guān)于SpringBoot基于redis自定義注解實現(xiàn)后端接口防重復(fù)提交校驗的文章就介紹到這了,更多相關(guān)SpringBoot 接口防重復(fù)提交校驗內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！
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