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redis 工具类 新增返回 map<String,List<T>> 格式
This commit is contained in:
wangw
2024-12-18 17:49:34 +08:00
parent 38decaa8f1
commit 48ed1e3d7a
7 changed files with 85 additions and 40 deletions
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84
src/main/java/com/sqx/common/utils/RedisUtils.java
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@@ -1,5 +1,6 @@
package com.sqx.common.utils;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.gson.Gson;
import com.sqx.modules.redisService.RedisService;
@@ -10,12 +11,14 @@ import org.springframework.stereotype.Component;
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* Redis工具类
*
*/
@Component
public class RedisUtils {
@@ -33,19 +36,31 @@ public class RedisUtils {
private SetOperations<String, Object> setOperations;
@Autowired
private ZSetOperations<String, Object> zSetOperations;
/** 默认过期时长，单位：秒 */
/**
* 默认过期时长，单位：秒
*/
public final static long DEFAULT_EXPIRE = 60 * 60 * 24;
/** 不设置过期时长 */
/**
* 不设置过期时长
*/
public final static long NOT_EXPIRE = -1;
private final static Gson Gson = new Gson();
/**
* 获取缓存里的数据 如果不存在 则插入 并返回
* @param key redis Key
* @param clazz 返回类型
* @param method RedisService调用的方法名 如果数据不存在会执行该调用方法
*/
public <T> List<T> getListData(String key, Class<T> clazz,String method) {
public <T> Map<String, List<T>> getMapData(String key, String method, Class<T> clazz) {
String jsonStr = getDate(key, method);
ObjectMapper objectMapper = new ObjectMapper();
try {
JsonNode jsonNode = objectMapper.readTree(jsonStr);
return jsonNodeToMap(jsonNode, clazz);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
public <T> List<T> getListData(String key, Class<T> clazz, String method) {
String jsonStr = getDate(key, method);
ObjectMapper objectMapper = new ObjectMapper();
try {
@@ -59,26 +74,27 @@ public class RedisUtils {
/**
* 获取缓存里的数据 如果不存在 则插入 并返回
* @param key redis Key
* @param clazz 返回类型
*
* @param key redis Key
* @param clazz 返回类型
* @param method RedisService调用的方法名 如果数据不存在会执行该调用方法
*/
public <T> T getObjectDate(String key, Class<T> clazz,String method) {
public <T> T getObjectDate(String key, Class<T> clazz, String method) {
String jsonStr = getDate(key, method);
return this.fromJson(jsonStr, clazz);
}
public String getDate(String key, String method) {
public String getDate(String key, String method) {
if (!this.hasKey(key)) {
try {
// 获取Lookup对象
MethodHandles.Lookup lookup = MethodHandles.lookup();
// 构建方法类型（这里假设方法无参数，返回类型为void）
MethodType methodType = MethodType.methodType(void.class , String.class);
MethodType methodType = MethodType.methodType(void.class, String.class);
// 获取方法句柄
MethodHandle methodHandle = lookup.findVirtual(redisService.getClass(), method, methodType);
// 调用方法句柄
methodHandle.invoke(redisService,key);
methodHandle.invoke(redisService, key);
} catch (Exception e) {
e.printStackTrace();
return null;
@@ -93,9 +109,9 @@ public class RedisUtils {
return redisTemplate.hasKey(key);
}
public void set(String key, Object value, long expire){
public void set(String key, Object value, long expire) {
valueOperations.set(key, toJson(value));
if(expire != NOT_EXPIRE){
if (expire != NOT_EXPIRE) {
redisTemplate.expire(key, expire, TimeUnit.SECONDS);
}
@@ -114,13 +130,13 @@ public class RedisUtils {
}
public void set(String key, Object value){
public void set(String key, Object value) {
set(key, value, DEFAULT_EXPIRE);
}
public <T> T get(String key, Class<T> clazz, long expire) {
String value = valueOperations.get(key);
if(expire != NOT_EXPIRE){
if (expire != NOT_EXPIRE) {
redisTemplate.expire(key, expire, TimeUnit.SECONDS);
}
return value == null ? null : fromJson(value, clazz);
@@ -132,7 +148,7 @@ public class RedisUtils {
public String get(String key, long expire) {
String value = valueOperations.get(key);
if(expire != NOT_EXPIRE){
if (expire != NOT_EXPIRE) {
redisTemplate.expire(key, expire, TimeUnit.SECONDS);
}
return value;
@@ -164,9 +180,9 @@ public class RedisUtils {
/**
* Object转成JSON数据
*/
private String toJson(Object object){
if(object instanceof Integer || object instanceof Long || object instanceof Float ||
object instanceof Double || object instanceof Boolean || object instanceof String){
private String toJson(Object object) {
if (object instanceof Integer || object instanceof Long || object instanceof Float ||
object instanceof Double || object instanceof Boolean || object instanceof String) {
return String.valueOf(object);
}
return Gson.toJson(object);
@@ -175,7 +191,25 @@ public class RedisUtils {
/**
* JSON数据，转成Object
*/
private <T> T fromJson(String json, Class<T> clazz){
private <T> T fromJson(String json, Class<T> clazz) {
return Gson.fromJson(json, clazz);
}
public <T> Map<String, List<T>> jsonNodeToMap(JsonNode jsonNode, Class<T> clazz) {
Map<String, List<T>> resultMap = new HashMap<>();
ObjectMapper objectMapper = new ObjectMapper();
if (jsonNode.isObject()) {
// 获取字段名（也就是键）的迭代器
Iterator<String> fieldNames = jsonNode.fieldNames();
while (fieldNames.hasNext()) {
String key = fieldNames.next();
JsonNode elementNode = jsonNode.get(key);
resultMap.put(key, objectMapper.convertValue(elementNode,
objectMapper.getTypeFactory().constructCollectionType(List.class, clazz)));
}
}
return resultMap;
}
}