forecast/forecast-backend-vue/src/plugins/cache.js

const sessionCache = {
  set (key, value) {
    try {
      if (!sessionStorage) {
        return
      }
      if (key != null && value != null) {
        sessionStorage.setItem(key, value)
      }
    } catch (error) {
      console.warn('sessionStorage.setItem failed:', error)
    }
  },
  get (key) {
    try {
      if (!sessionStorage) {
        return null
      }
      if (key == null) {
        return null
      }
      return sessionStorage.getItem(key)
    } catch (error) {
      console.warn('sessionStorage.getItem failed:', error)
      return null
    }
  },
  setJSON (key, jsonValue) {
    if (jsonValue != null) {
      this.set(key, JSON.stringify(jsonValue))
    }
  },
  getJSON (key) {
    try {
      const value = this.get(key)
      if (value != null) {
        return JSON.parse(value)
      }
    } catch (error) {
      console.warn('sessionStorage.getJSON failed:', error)
      return null
    }
  },
  remove (key) {
    try {
      sessionStorage.removeItem(key);
    } catch (error) {
      console.warn('sessionStorage.removeItem failed:', error)
    }
  }
}
const localCache = {
  set (key, value) {
    try {
      if (!localStorage) {
        return
      }
      if (key != null && value != null) {
        localStorage.setItem(key, value)
      }
    } catch (error) {
      console.warn('localStorage.setItem failed:', error)
    }
  },
  get (key) {
    try {
      if (!localStorage) {
        return null
      }
      if (key == null) {
        return null
      }
      return localStorage.getItem(key)
    } catch (error) {
      console.warn('localStorage.getItem failed:', error)
      return null
    }
  },
  setJSON (key, jsonValue) {
    if (jsonValue != null) {
      this.set(key, JSON.stringify(jsonValue))
    }
  },
  getJSON (key) {
    try {
      const value = this.get(key)
      if (value != null) {
        return JSON.parse(value)
      }
    } catch (error) {
      console.warn('localStorage.getJSON failed:', error)
      return null
    }
  },
  remove (key) {
    try {
      localStorage.removeItem(key);
    } catch (error) {
      console.warn('localStorage.removeItem failed:', error)
    }
  }
}

export default {
  /**
   * 会话级缓存
   */
  session: sessionCache,
  /**
   * 本地缓存
   */
  local: localCache
}