Headers (java-sdk 1.2.2-SNAPSHOT API)

```
public interface Headers
```
Common S3 HTTP header values used throughout the AWS S3 Java client.

字段概要

字段
限定符和类型	字段和说明
`static String`	`AMAZON_PREFIX` Prefix for general Amazon headers: x-amz-
`static String`	`CACHE_CONTROL`
`static String`	`CONTENT_DISPOSITION`
`static String`	`CONTENT_ENCODING`
`static String`	`CONTENT_LENGTH`
`static String`	`CONTENT_MD5`
`static String`	`CONTENT_TYPE`
`static String`	`COPY_PART_RANGE` Range header for the copy part request
`static String`	`COPY_SOURCE_IF_MATCH` ETag matching constraint header for the copy object request
`static String`	`COPY_SOURCE_IF_MODIFIED_SINCE` Modified since constraint header for the copy object request
`static String`	`COPY_SOURCE_IF_NO_MATCH` ETag non-matching constraint header for the copy object request
`static String`	`COPY_SOURCE_IF_UNMODIFIED_SINCE` Unmodified since constraint header for the copy object request
`static String`	`CRYPTO_INSTRUCTION_FILE` Instruction file header to be placed in the metadata of instruction files
`static String`	`CRYPTO_IV` Initialization vector (IV) header that is used in the symmetric and envelope encryption mechanisms
`static String`	`CRYPTO_KEY` Encrypted symmetric key header that is used in the envelope encryption mechanism
`static String`	`DATE`
`static String`	`ERROR_CODE`
`static String`	`ETAG`
`static String`	`EXPIRATION` Header for optional object expiration
`static String`	`EXPIRES` Header for optional object expiration
`static String`	`EXTENDED_REQUEST_ID` S3 response header for a request's extended debugging ID
`static String`	`GET_OBJECT_IF_MATCH` ETag matching constraint header for the get object request
`static String`	`GET_OBJECT_IF_MODIFIED_SINCE` Modified since constraint header for the get object request
`static String`	`GET_OBJECT_IF_NONE_MATCH` ETag non-matching constraint header for the get object request
`static String`	`GET_OBJECT_IF_UNMODIFIED_SINCE` Unmodified since constraint header for the get object request
`static String`	`LAST_MODIFIED`
`static String`	`MATERIALS_DESCRIPTION` JSON-encoded description of encryption materials used during encryption
`static String`	`METADATA_DIRECTIVE` S3 request header indicating how to handle metadata when copying an object
`static String`	`RANGE` Range header for the get object request
`static String`	`REDIRECT_LOCATION` Header for optional redirect location of an object
`static String`	`REQUEST_ID` S3 response header for a request's AWS request ID
`static String`	`RESTORE` Header for the optional restore information of an object
`static String`	`S3_ALTERNATE_DATE` Amazon's alternative date header: x-amz-date
`static String`	`S3_CANNED_ACL` S3's canned ACL header: x-amz-acl
`static String`	`S3_MFA` S3's Multi-Factor Authentication header
`static String`	`S3_USER_METADATA_PREFIX` Prefix for S3 user metadata: x-amz-meta-
`static String`	`S3_VERSION_ID` S3's version ID header
`static String`	`SECURITY_TOKEN` DevPay token header
`static String`	`SERVER`
`static String`	`SERVER_SIDE_ENCRYPTION` Header for optional server-side encryption algorithm
`static String`	`SERVER_SIDE_KEY` for miaopai download file url
`static String`	`SINA_PREFIX` Prefix for general Amazon headers: x-sina-
`static String`	`STORAGE_CLASS` Header describing what class of storage a user wants
`static String`	`UNENCRYPTED_CONTENT_LENGTH` Header for the original, unencrypted size of an encrypted object
`static String`	`UNENCRYPTED_CONTENT_MD5` Header for the optional original unencrypted Content MD5 of an encrypted object

- 字段详细资料
  - CACHE_CONTROL
```
static final String CACHE_CONTROL
```
    另请参阅:
    常量字段值
  - CONTENT_DISPOSITION
```
static final String CONTENT_DISPOSITION
```
    另请参阅:
    常量字段值
  - CONTENT_ENCODING
```
static final String CONTENT_ENCODING
```
    另请参阅:
    常量字段值
  - CONTENT_LENGTH
```
static final String CONTENT_LENGTH
```
    另请参阅:
    常量字段值
  - CONTENT_MD5
```
static final String CONTENT_MD5
```
    另请参阅:
    常量字段值
  - CONTENT_TYPE
```
static final String CONTENT_TYPE
```
    另请参阅:
    常量字段值
  - DATE
```
static final String DATE
```
    另请参阅:
    常量字段值
  - ETAG
```
static final String ETAG
```
    另请参阅:
    常量字段值
  - LAST_MODIFIED
```
static final String LAST_MODIFIED
```
    另请参阅:
    常量字段值
  - SERVER
```
static final String SERVER
```
    另请参阅:
    常量字段值
  - AMAZON_PREFIX
```
static final String AMAZON_PREFIX
```
    Prefix for general Amazon headers: x-amz-
    
    另请参阅:
    常量字段值
  - SINA_PREFIX
```
static final String SINA_PREFIX
```
    Prefix for general Amazon headers: x-sina-
    
    另请参阅:
    常量字段值
  - S3_CANNED_ACL
```
static final String S3_CANNED_ACL
```
    S3's canned ACL header: x-amz-acl
    
    另请参阅:
    常量字段值
  - S3_ALTERNATE_DATE
```
static final String S3_ALTERNATE_DATE
```
    Amazon's alternative date header: x-amz-date
    
    另请参阅:
    常量字段值
  - S3_USER_METADATA_PREFIX
```
static final String S3_USER_METADATA_PREFIX
```
    Prefix for S3 user metadata: x-amz-meta-
    
    另请参阅:
    常量字段值
  - S3_VERSION_ID
```
static final String S3_VERSION_ID
```
    S3's version ID header
    
    另请参阅:
    常量字段值
  - S3_MFA
```
static final String S3_MFA
```
    S3's Multi-Factor Authentication header
    
    另请参阅:
    常量字段值
  - REQUEST_ID
```
static final String REQUEST_ID
```
    S3 response header for a request's AWS request ID
    
    另请参阅:
    常量字段值
  - ERROR_CODE
```
static final String ERROR_CODE
```
    另请参阅:
    常量字段值
  - EXTENDED_REQUEST_ID
```
static final String EXTENDED_REQUEST_ID
```
    S3 response header for a request's extended debugging ID
    
    另请参阅:
    常量字段值
  - METADATA_DIRECTIVE
```
static final String METADATA_DIRECTIVE
```
    S3 request header indicating how to handle metadata when copying an object
    
    另请参阅:
    常量字段值
  - SECURITY_TOKEN
```
static final String SECURITY_TOKEN
```
    DevPay token header
    
    另请参阅:
    常量字段值
  - STORAGE_CLASS
```
static final String STORAGE_CLASS
```
    Header describing what class of storage a user wants
    
    另请参阅:
    常量字段值
  - SERVER_SIDE_ENCRYPTION
```
static final String SERVER_SIDE_ENCRYPTION
```
    Header for optional server-side encryption algorithm
    
    另请参阅:
    常量字段值
  - SERVER_SIDE_KEY
```
static final String SERVER_SIDE_KEY
```
    for miaopai download file url
    
    另请参阅:
    常量字段值
  - EXPIRATION
```
static final String EXPIRATION
```
    Header for optional object expiration
    
    另请参阅:
    常量字段值
  - EXPIRES
```
static final String EXPIRES
```
    Header for optional object expiration
    
    另请参阅:
    常量字段值
  - COPY_SOURCE_IF_MATCH
```
static final String COPY_SOURCE_IF_MATCH
```
    ETag matching constraint header for the copy object request
    
    另请参阅:
    常量字段值
  - COPY_SOURCE_IF_NO_MATCH
```
static final String COPY_SOURCE_IF_NO_MATCH
```
    ETag non-matching constraint header for the copy object request
    
    另请参阅:
    常量字段值
  - COPY_SOURCE_IF_UNMODIFIED_SINCE
```
static final String COPY_SOURCE_IF_UNMODIFIED_SINCE
```
    Unmodified since constraint header for the copy object request
    
    另请参阅:
    常量字段值
  - COPY_SOURCE_IF_MODIFIED_SINCE
```
static final String COPY_SOURCE_IF_MODIFIED_SINCE
```
    Modified since constraint header for the copy object request
    
    另请参阅:
    常量字段值
  - RANGE
```
static final String RANGE
```
    Range header for the get object request
    
    另请参阅:
    常量字段值
  - COPY_PART_RANGE
```
static final String COPY_PART_RANGE
```
    Range header for the copy part request
    
    另请参阅:
    常量字段值
  - GET_OBJECT_IF_MODIFIED_SINCE
```
static final String GET_OBJECT_IF_MODIFIED_SINCE
```
    Modified since constraint header for the get object request
    
    另请参阅:
    常量字段值
  - GET_OBJECT_IF_UNMODIFIED_SINCE
```
static final String GET_OBJECT_IF_UNMODIFIED_SINCE
```
    Unmodified since constraint header for the get object request
    
    另请参阅:
    常量字段值
  - GET_OBJECT_IF_MATCH
```
static final String GET_OBJECT_IF_MATCH
```
    ETag matching constraint header for the get object request
    
    另请参阅:
    常量字段值
  - GET_OBJECT_IF_NONE_MATCH
```
static final String GET_OBJECT_IF_NONE_MATCH
```
    ETag non-matching constraint header for the get object request
    
    另请参阅:
    常量字段值
  - CRYPTO_KEY
```
static final String CRYPTO_KEY
```
    Encrypted symmetric key header that is used in the envelope encryption mechanism
    
    另请参阅:
    常量字段值
  - CRYPTO_IV
```
static final String CRYPTO_IV
```
    Initialization vector (IV) header that is used in the symmetric and envelope encryption mechanisms
    
    另请参阅:
    常量字段值
  - MATERIALS_DESCRIPTION
```
static final String MATERIALS_DESCRIPTION
```
    JSON-encoded description of encryption materials used during encryption
    
    另请参阅:
    常量字段值
  - CRYPTO_INSTRUCTION_FILE
```
static final String CRYPTO_INSTRUCTION_FILE
```
    Instruction file header to be placed in the metadata of instruction files
    
    另请参阅:
    常量字段值
  - UNENCRYPTED_CONTENT_LENGTH
```
static final String UNENCRYPTED_CONTENT_LENGTH
```
    Header for the original, unencrypted size of an encrypted object
    
    另请参阅:
    常量字段值
  - UNENCRYPTED_CONTENT_MD5
```
static final String UNENCRYPTED_CONTENT_MD5
```
    Header for the optional original unencrypted Content MD5 of an encrypted object
    
    另请参阅:
    常量字段值
  - REDIRECT_LOCATION
```
static final String REDIRECT_LOCATION
```
    Header for optional redirect location of an object
    
    另请参阅:
    常量字段值
  - RESTORE
```
static final String RESTORE
```
    Header for the optional restore information of an object
    
    另请参阅:
    常量字段值

接口 Headers

字段概要

字段详细资料

CACHE_CONTROL

CONTENT_DISPOSITION

CONTENT_ENCODING

CONTENT_LENGTH

CONTENT_MD5

CONTENT_TYPE

DATE

ETAG

LAST_MODIFIED

SERVER

AMAZON_PREFIX

SINA_PREFIX

S3_CANNED_ACL

S3_ALTERNATE_DATE

S3_USER_METADATA_PREFIX

S3_VERSION_ID

S3_MFA

REQUEST_ID

ERROR_CODE

EXTENDED_REQUEST_ID

METADATA_DIRECTIVE

SECURITY_TOKEN

STORAGE_CLASS

SERVER_SIDE_ENCRYPTION

SERVER_SIDE_KEY

EXPIRATION

EXPIRES

COPY_SOURCE_IF_MATCH

COPY_SOURCE_IF_NO_MATCH

COPY_SOURCE_IF_UNMODIFIED_SINCE

COPY_SOURCE_IF_MODIFIED_SINCE

RANGE

COPY_PART_RANGE

GET_OBJECT_IF_MODIFIED_SINCE

GET_OBJECT_IF_UNMODIFIED_SINCE

GET_OBJECT_IF_MATCH

GET_OBJECT_IF_NONE_MATCH

CRYPTO_KEY

CRYPTO_IV

MATERIALS_DESCRIPTION

CRYPTO_INSTRUCTION_FILE

UNENCRYPTED_CONTENT_LENGTH

UNENCRYPTED_CONTENT_MD5

REDIRECT_LOCATION

RESTORE