Spring 可缓存不使用默认密钥

Question

Spring 在我使用默认密钥（例如 -

时未缓存我的函数

@PostMapping("getDashboardDataNew")
@Cacheable(value="myDash")
public DashboardDto getHomeDashboardDataNew(@RequestBody DashboardRequest dashboardRequest) {
    LOGGER.info(" Get All the Dashboard Information : ");
    //code
    return dashboardDto;
}

但是当我使用 sPEL 提供自定义密钥时，它会缓存响应，例如

@PostMapping("getDashboardDataNew")
@Cacheable(value="myDash", key="#dashboardRequest.level")
public DashboardDto getHomeDashboardDataNew(@RequestBody DashboardRequest dashboardRequest) {
    LOGGER.info(" Get All the Dashboard Information : ");
    //code
    return dashboardDto;
}

请求负载总是-

{"fromDate":null,"toDate":null,"theme":null,"activity":null,"level":1,"levelValue":null,"state":null,"district":null}

即使在使用 Eclipse 自动生成等号和哈希码之后，spring 也不会缓存该值。以下是自动生成的代码

@Override
public int hashCode() {
    final int prime = 31;
    int result = 1;
    result = prime * result + ((activity == null) ? 0 : activity.hashCode());
    result = prime * result + ((fromDate == null) ? 0 : fromDate.hashCode());
    result = prime * result + ((level == null) ? 0 : level.hashCode());
    result = prime * result + ((levelValue == null) ? 0 : levelValue.hashCode());
    result = prime * result + ((organizer == null) ? 0 : organizer.hashCode());
    result = prime * result + ((theme == null) ? 0 : theme.hashCode());
    result = prime * result + ((toDate == null) ? 0 : toDate.hashCode());
    return result;
}

@Override
public boolean equals(Object obj) {
    if (this == obj)
        return true;
    if (obj == null)
        return false;
    if (getClass() != obj.getClass())
        return false;
    DashboardRequest other = (DashboardRequest) obj;
    if (activity == null) {
        if (other.activity != null)
            return false;
    } else if (!activity.equals(other.activity))
        return false;
    if (fromDate == null) {
        if (other.fromDate != null)
            return false;
    } else if (!fromDate.equals(other.fromDate))
        return false;
    if (level == null) {
        if (other.level != null)
            return false;
    } else if (!level.equals(other.level))
        return false;
    if (levelValue == null) {
        if (other.levelValue != null)
            return false;
    } else if (!levelValue.equals(other.levelValue))
        return false;
    if (organizer == null) {
        if (other.organizer != null)
            return false;
    } else if (!organizer.equals(other.organizer))
        return false;
    if (theme == null) {
        if (other.theme != null)
            return false;
    } else if (!theme.equals(other.theme))
        return false;
    if (toDate == null) {
        if (other.toDate != null)
            return false;
    } else if (!toDate.equals(other.toDate))
        return false;
    return true;
}

我不会更改请求负载。

Answer 1

默认情况下，当没有提供密钥时，Spring 缓存依赖于 SimpleKeyGenerator，它依赖于参数的哈希码来生成密钥。你可以检查这个 link.

Answer 2

我知道这里出了什么问题。我正在函数内部某处更改请求负载的属性之一，例如

dashboardRequest.setLevel(dashboardRequest.getLevel() + 1);

并且由于 spring 缓存 AOP 在方法执行后将值放入缓存中是使用修改后的对象而不是参数中提供的值有效地使我的密钥不同于请求负载生成的密钥.希望这对某人有所帮助。

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