CacheControl (bus-all 5.5.0 API)

java.lang.Object
- org.aoju.bus.http.cache.CacheControl

```
public final class CacheControl
extends Object
```
缓存控制头，带有来自服务器或客户端的缓存指令。这些指令设置了哪些响应可以存储，以及哪些请求可以由存储的响应来满足的策略

Since:

JDK 1.8+

Version:

5.5.0

Author:

Kimi Liu

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class CacheControl.Builder
构建一个Cache-Control请求头

Nested Classes
Modifier and Type	Class and Description
`static class`	`CacheControl.Builder` 构建一个`Cache-Control`请求头

Field Summary

Fields
Modifier and Type	Field and Description
`static CacheControl`	`FORCE_CACHE` 仅使用缓存的缓存控制请求指令，即使缓存的响应已过期。如果响应在缓存中不可用，或者需要服务器验证，调用将失败
`static CacheControl`	`FORCE_NETWORK` 需要对响应进行网络验证的缓存控制请求指令。请注意，缓存可以通过有条件的GET请求来辅助这些请求.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`immutable()`
`boolean`	`isPrivate()`
`boolean`	`isPublic()`
`int`	`maxAgeSeconds()`
`int`	`maxStaleSeconds()`
`int`	`minFreshSeconds()`
`boolean`	`mustRevalidate()`
`boolean`	`noCache()`
`boolean`	`noStore()`
`boolean`	`noTransform()`
`boolean`	`onlyIfCached()`
`static CacheControl`	`parse(Headers headers)` 返回`headers`的缓存指令。如果存在Cache-Control和Pragma头文件，则会同时显示它们
`int`	`sMaxAgeSeconds()`
`String`	`toString()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - FORCE_NETWORK
```
public static final CacheControl FORCE_NETWORK
```
    需要对响应进行网络验证的缓存控制请求指令。请注意，缓存可以通过有条件的GET请求来辅助这些请求.
  - FORCE_CACHE
```
public static final CacheControl FORCE_CACHE
```
    仅使用缓存的缓存控制请求指令，即使缓存的响应已过期。如果响应在缓存中不可用，或者需要服务器验证，调用将失败
- Method Detail
  - parse
```
public static CacheControl parse(Headers headers)
```
    返回headers的缓存指令。如果存在Cache-Control和Pragma头文件，则会同时显示它们
    
    Parameters:
    
    headers - headers
    
    Returns:
    
    缓存控制头
  - noCache
```
public boolean noCache()
```
  - noStore
```
public boolean noStore()
```
  - maxAgeSeconds
```
public int maxAgeSeconds()
```
  - sMaxAgeSeconds
```
public int sMaxAgeSeconds()
```
  - isPrivate
```
public boolean isPrivate()
```
  - isPublic
```
public boolean isPublic()
```
  - mustRevalidate
```
public boolean mustRevalidate()
```
  - maxStaleSeconds
```
public int maxStaleSeconds()
```
  - minFreshSeconds
```
public int minFreshSeconds()
```
  - onlyIfCached
```
public boolean onlyIfCached()
```
  - noTransform
```
public boolean noTransform()
```
  - immutable
```
public boolean immutable()
```
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object

Class CacheControl

Nested Class Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

FORCE_NETWORK

FORCE_CACHE

Method Detail

parse

noCache

noStore

maxAgeSeconds

sMaxAgeSeconds

isPrivate

isPublic

mustRevalidate

maxStaleSeconds

minFreshSeconds

onlyIfCached

noTransform

immutable

toString