首页数据添加一个简单的缓存

litemall-wx-api/src/main/java/org/linlinjava/litemall/wx/service/HomeCacheManager.java

+package org.linlinjava.litemall.wx.service;
+
+import java.util.Map;
+
+/**
+ * 简单缓存首页的数据
+ */
+public class HomeCacheManager {
+    private static Map<String, Object> cacheData;
+
+    /**
+     * 缓存首页数据
+     *
+     * @param data
+     */
+    public static void loadData(Map<String, Object> data) {
+        cacheData = data;
+    }
+
+    public static Map<String, Object> getCacheData() {
+        return cacheData;
+    }
+
+    /**
+     * 判断缓存中是否有数据
+     *
+     * @return
+     */
+    public static boolean hasData() {
+        return cacheData != null;
+    }
+
+    /**
+     * 清除缓存数据
+     */
+    public static void clear() {
+        cacheData = null;
+    }
+}

litemall-wx-api/src/main/java/org/linlinjava/litemall/wx/web/WxHomeController.java

@@ -4,12 +4,14 @@ import org.linlinjava.litemall.core.util.ResponseUtil;
 import org.linlinjava.litemall.db.domain.*;
 import org.linlinjava.litemall.db.service.*;
 import org.linlinjava.litemall.core.system.SystemConfig;
+import org.linlinjava.litemall.wx.service.HomeCacheManager;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RestController;
 
+import javax.validation.constraints.NotNull;
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
@@ -32,6 +34,22 @@ public class WxHomeController {
     @Autowired
     private LitemallGrouponRulesService grouponRulesService;
 
+
+    @GetMapping("/cache")
+    public Object cache(@NotNull Integer key) {
+        if (!key.equals("litemall_cache")) {
+            return ResponseUtil.fail();
+        }
+
+        // 清除缓存
+        HomeCacheManager.clear();
+        if (!HomeCacheManager.hasData()) {
+            return ResponseUtil.ok();
+        } else {
+            return ResponseUtil.fail();
+        }
+    }
+
     /**
      * app首页
      *
@@ -54,6 +72,12 @@ public class WxHomeController {
      */
     @GetMapping("/index")
     public Object index() {
+        //优先从缓存中读取
+        if (HomeCacheManager.hasData()) {
+            return ResponseUtil.ok(HomeCacheManager.getCacheData());
+        }
+
+
         Map<String, Object> data = new HashMap<>();
 
         List<LitemallAd> banner = adService.queryIndex();
@@ -109,6 +133,8 @@ public class WxHomeController {
         }
         data.put("floorGoodsList", categoryList);
 
+        //缓存数据
+        HomeCacheManager.loadData(data);
         return ResponseUtil.ok(data);
     }
 }
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