ByteArrayDataSource (Java EE 5)

java.lang.Object
  javax.mail.util.ByteArrayDataSource

byte 数组支持的 DataSource。可以直接传入 byte 数组，也可以根据一个 InputStream 或 String 初始化 byte 数组。

since

en JavaMail 1.4

英文文档：

A DataSource backed by a byte array. The byte array may be passed in directly, or may be initialized from an InputStream or a String.

Since:

JavaMail 1.4

Author:

John Mani, Bill Shannon, Max Spivak

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Constructor Summary
ByteArrayDataSource(byte[] data, String type)           Create a ByteArrayDataSource with data from the specified byte array and with the specified MIME type.
ByteArrayDataSource(InputStream is, String type)           Create a ByteArrayDataSource with data from the specified InputStream and with the specified MIME type.
ByteArrayDataSource(String data, String type)           Create a ByteArrayDataSource with data from the specified String and with the specified MIME type.

 

Method Summary
String	getContentType()           Get the MIME content type of the data.
InputStream	getInputStream()           Return an InputStream for the data.
String	getName()           Get the name of the data.
OutputStream	getOutputStream()           Return an OutputStream for the data.
void	setName(String name)           Set the name of the data.

 

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

 

Constructor Detail

public ByteArrayDataSource(java.io.InputStream is, String type) throws java.io.IOException
使用指定 InputStream 的数据和指定的 MIME 类型创建 ByteArrayDataSource。完整地读取 InputStream 并将数据存储在一个 byte 数组中。

is	InputStream
type	MIME 类型
Throws	java.io.IOException: 读取流时出现错误

英文文档：

ByteArrayDataSource

public ByteArrayDataSource(InputStream is,
                           String type)
                    throws IOException

Create a ByteArrayDataSource with data from the specified InputStream and with the specified MIME type. The InputStream is read completely and the data is stored in a byte array.

Parameters:

is - the InputStream

type - the MIME type

Throws:

IOException - errors reading the stream

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public ByteArrayDataSource(byte[] data, String type)
使用指定 byte 数组的数据和指定的 MIME 类型创建 ByteArrayDataSource。

data	数据
type	MIME 类型

英文文档：

ByteArrayDataSource

public ByteArrayDataSource(byte[] data,
                           String type)

Create a ByteArrayDataSource with data from the specified byte array and with the specified MIME type.

Parameters:

data - the data

type - the MIME type

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public ByteArrayDataSource(String data, String type) throws java.io.IOException
使用指定 String 的数据和指定的 MIME 类型创建 ByteArrayDataSource。MIME 类型应该包含一个 charset 参数，它指定字符串要使用的字符集。如果未包含该参数，则使用默认的字符集。

data	String
type	MIME 类型
Throws	java.io.IOException: 读取 String 时出现错误

英文文档：

ByteArrayDataSource

public ByteArrayDataSource(String data,
                           String type)
                    throws IOException

Create a ByteArrayDataSource with data from the specified String and with the specified MIME type. The MIME type should include a charset parameter specifying the charset to be used for the string. If the parameter is not included, the default charset is used.

Parameters:

data - the String

type - the MIME type

Throws:

IOException - errors reading the String

Method Detail

public java.io.InputStream getInputStream() throws java.io.IOException
返回数据的 InputStream。注意，每次调用此方法时，都返回一个新流。

return	InputStream
Throws	java.io.IOException: 如果还没有设置任何数据

英文文档：

getInputStream

public InputStream getInputStream()
                           throws IOException

Return an InputStream for the data. Note that a new stream is returned each time this method is called.

Specified by:

getInputStream in interface DataSource

Returns:

the InputStream

Throws:

IOException - if no data has been set

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public java.io.OutputStream getOutputStream() throws java.io.IOException
返回数据的 OutputStream。不支持写入数据；总是抛出 IOException。

Throws

java.io.IOException: 始终

英文文档：

getOutputStream

public OutputStream getOutputStream()
                             throws IOException

Return an OutputStream for the data. Writing the data is not supported; an IOException is always thrown.

Specified by:

getOutputStream in interface DataSource

Returns:

an OutputStream

Throws:

IOException - always

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public String getContentType()
获取数据的 MIME 内容类型。

return

MIME 类型

英文文档：

getContentType

public String getContentType()

Get the MIME content type of the data.

Specified by:

getContentType in interface DataSource

Returns:

the MIME type

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public String getName()
获取数据名称。默认情况下，返回一个空字符串 ("")。

return

此数据的名称

英文文档：

getName

public String getName()

Get the name of the data. By default, an empty string ("") is returned.

Specified by:

getName in interface DataSource

Returns:

the name of this data

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public void setName(String name)
设置数据名称。

name

此数据的名称

英文文档：

setName

public void setName(String name)

Set the name of the data.

Parameters:

name - the name of this data

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