MimeType (Java EE 5)

Java EE API

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javax.activation Class MimeType

java.lang.Object
  extended by javax.activation.MimeType
All Implemented Interfaces:
Externalizable, Serializable
public class MimeType
extends Object
implements Externalizable

Implements: java.io.Externalizable

RFC 2045 和 2046 中定义的多用途 Internet 邮件扩展（Multipurpose Internet Mail Extension，MIME）类型。
英文文档：

A Multipurpose Internet Mail Extension (MIME) type, as defined in RFC 2045 and 2046.

See Also:
Serialized Form

Constructor Summary
MimeType()
          Default constructor.
MimeType(String rawdata)
          Constructor that builds a MimeType from a String.
MimeType(String primary, String sub)
          Constructor that builds a MimeType with the given primary and sub type but has an empty parameter list.
 
Method Summary
 String getBaseType()
          Return a String representation of this object without the parameter list.
 String getParameter(String name)
          Retrieve the value associated with the given name, or null if there is no current association.
 MimeTypeParameterList getParameters()
          Retrieve this object's parameter list.
 String getPrimaryType()
          Retrieve the primary type of this object.
 String getSubType()
          Retrieve the subtype of this object.
 boolean match(MimeType type)
          Determine if the primary and sub type of this object is the same as what is in the given type.
 boolean match(String rawdata)
          Determine if the primary and sub type of this object is the same as the content type described in rawdata.
 void readExternal(ObjectInput in)
          The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays.
 void removeParameter(String name)
          Remove any value associated with the given name.
 void setParameter(String name, String value)
          Set the value to be associated with the given name, replacing any previous association.
 void setPrimaryType(String primary)
          Set the primary type for this object to the given String.
 void setSubType(String sub)
          Set the subtype for this object to the given String.
 String toString()
          Return the String representation of this object.
 void writeExternal(ObjectOutput out)
          The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings and arrays.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

public MimeType()
默认构造方法。
英文文档：

MimeType

public MimeType()
Default constructor.

public MimeType(String rawdata) throws MimeTypeParseException
根据 String 构建 MimeType 的构造方法。
rawdata MIME 类型字符串
英文文档：

MimeType

public MimeType(String rawdata)
         throws MimeTypeParseException
Constructor that builds a MimeType from a String.

Parameters:
rawdata - the MIME type string
Throws:
MimeTypeParseException

public MimeType(String primary, String sub) throws MimeTypeParseException
用给定的基本类型和子类型构建 MimeType 的构造方法，它的参数列表为空。
primary 基本 MIME 类型
sub MIME 子类型
ThrowsMimeTypeParseException: 如果基本类型或子类型不是有效的标记
英文文档：

MimeType

public MimeType(String primary,
                String sub)
         throws MimeTypeParseException
Constructor that builds a MimeType with the given primary and sub type but has an empty parameter list.

Parameters:
primary - the primary MIME type
sub - the MIME sub-type
Throws:
MimeTypeParseException - if the primary type or subtype is not a valid token

Method Detail

public String getPrimaryType()
获取此对象的基本类型。
return 基本 MIME 类型
英文文档：

getPrimaryType

public String getPrimaryType()
Retrieve the primary type of this object.

Returns:
the primary MIME type

public void setPrimaryType(String primary) throws MimeTypeParseException
将此对象的基本类型设置为给定的 String。
primary 基本 MIME 类型
ThrowsMimeTypeParseException: 如果基本类型不是有效的标记
英文文档：

setPrimaryType

public void setPrimaryType(String primary)
                    throws MimeTypeParseException
Set the primary type for this object to the given String.

Parameters:
primary - the primary MIME type
Throws:
MimeTypeParseException - if the primary type is not a valid token

public String getSubType()
获取此对象的子类型。
return MIME 子类型
英文文档：

getSubType

public String getSubType()
Retrieve the subtype of this object.

Returns:
the MIME subtype

public void setSubType(String sub) throws MimeTypeParseException
将此对象的子类型设置为给定的 String。
sub MIME 子类型
ThrowsMimeTypeParseException: 如果子类型不是有效的标记
英文文档：

setSubType

public void setSubType(String sub)
                throws MimeTypeParseException
Set the subtype for this object to the given String.

Parameters:
sub - the MIME subtype
Throws:
MimeTypeParseException - if the subtype is not a valid token

public MimeTypeParameterList getParameters()
获取此对象的参数列表。
return 表示参数的 MimeTypeParameterList 对象
英文文档：

getParameters

public MimeTypeParameterList getParameters()
Retrieve this object's parameter list.

Returns:
a MimeTypeParameterList object representing the parameters

public String getParameter(String name)
获取与给定名称关联的值；如果不存在当前关联，则返回 null。
name 参数名
return 参数的值
英文文档：

getParameter

public String getParameter(String name)
Retrieve the value associated with the given name, or null if there is no current association.

Parameters:
name - the parameter name
Returns:
the paramter's value

public void setParameter(String name, String value)
将值设置为与给定名称关联，替换以前的任何关联。
name 参数名
value 参数的值
英文文档：

setParameter

public void setParameter(String name,
                         String value)
Set the value to be associated with the given name, replacing any previous association.

Parameters:
name - the parameter name
value - the paramter's value

public void removeParameter(String name)
移除与给定名称关联的所有值。
name 参数名
英文文档：

removeParameter

public void removeParameter(String name)
Remove any value associated with the given name.

Parameters:
name - the parameter name

public String toString()
返回此对象的 String 表示形式。
英文文档：

toString

public String toString()
Return the String representation of this object.

Overrides:
toString in class Object

public String getBaseType()
返回此对象的 String 表示形式，不带参数列表。
return MIME 类型和子类型
英文文档：

getBaseType

public String getBaseType()
Return a String representation of this object without the parameter list.

Returns:
the MIME type and sub-type

public boolean match(MimeType type)
确定此对象的基本类型和子类型与给定类型中的类型是否相同。
type 要与之比较的 MimeType 对象
return 如果匹配，则返回 true
英文文档：

match

public boolean match(MimeType type)
Determine if the primary and sub type of this object is the same as what is in the given type.

Parameters:
type - the MimeType object to compare with
Returns:
true if they match

public boolean match(String rawdata) throws MimeTypeParseException
确定此对象的基本类型和子类型与 rawdata 中描述的内容类型是否相同。
rawdata 要与之比较的 MIME 类型字符串
return 如果匹配，则返回 true
英文文档：

match

public boolean match(String rawdata)
              throws MimeTypeParseException
Determine if the primary and sub type of this object is the same as the content type described in rawdata.

Parameters:
rawdata - the MIME type string to compare with
Returns:
true if they match
Throws:
MimeTypeParseException

public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException
对象可实现 writeExternal 方法来保存其内容：对于其基本值，调用 DataOutput 的方法；对于对象、字符串和数组，调用 ObjectOutput 的 writeObject 方法。
out 要写入的 ObjectOutput 对象
Throwsjava.io.IOException: 包含可能发生的所有 I/O 异常
英文文档：

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException
The object implements the writeExternal method to save its contents by calling the methods of DataOutput for its primitive values or calling the writeObject method of ObjectOutput for objects, strings and arrays.

Specified by:
writeExternal in interface Externalizable
Parameters:
out - the ObjectOutput object to write to
Throws:
IOException - Includes any I/O exceptions that may occur

public void readExternal(java.io.ObjectInput in) throws java.io.IOException, ClassNotFoundException
对象实现 readExternal 方法来恢复其内容，它通过调用 DataInput 的方法来恢复其基础类型，调用 readObject 来恢复对象、字符串和数组。readExternal 方法必须按照与 writeExternal 方法写入值时使用的相同顺序和类型来读取这些值。
in 要从中读取的 ObjectInput 对象
ThrowsClassNotFoundException: 如果无法找到需要恢复的某个对象的类。
英文文档：

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException
The object implements the readExternal method to restore its contents by calling the methods of DataInput for primitive types and readObject for objects, strings and arrays. The readExternal method must read the values in the same sequence and with the same types as were written by writeExternal.

Specified by:
readExternal in interface Externalizable
Parameters:
in - the ObjectInput object to read from
Throws:
ClassNotFoundException - If the class for an object being restored cannot be found.
IOException
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