java.net.URLEncoder翻译

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URLEncoder (Java 2 Platform SE v1.4.2)

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<H2>

java.net

Class URLEncoder</H2>

<PRE>

<A HREF="../../java/lang/Object.html" title="class in java.lang">java.lang.Object</A>

<IMG SRC="../../resources/inherit.gif" ALT="extended by">java.net.URLEncoder

</PRE>

<HR>

<DL>

<DT>public class URLEncoder<DT>extends <A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></DL>

Utility class for HTML form encoding. This class contains static methods

for converting a String to the <CODE>application/x-www-form-urlencoded</CODE> MIME

format. For more information about HTML form encoding, consult the HTML

<A HREF="http://www.w3.org/TR/html4/">specification</A>.

用于HTML表单编码的工具类，这个类含有将字符串编码为application/x-www-form-urlencoded这样

MIME格式的方法。关于HTML表单编码的更多细节，查阅HTML规范。

When encoding a String, the following rules apply:

当对字符串编码时，遵循以下规则：

<ul>

<li>The alphanumeric characters "<code>a</code>" through

"<code>z</code>", "<code>A</code>" through

"<code>Z</code>" and "<code>0</code>"

through "<code>9</code>" remain the same.

字母数字的字符，a-z，A-Z，0-9保持不变。

<li>The special characters "<code>.</code>",

"<code>-</code>", "<code>*</code>", and

"<code>_</code>" remain the same.

特殊字符.，-，*和_保持不变。

<li>The space character "<code> </code>" is

converted into a plus sign "<code>+</code>".

空格字符被转换成+号。

<li>All other characters are unsafe and are first converted into

one or more bytes using some encoding scheme. Then each byte is

represented by the 3-character string

"<code>%xy</code>", where xy is the

two-digit hexadecimal representation of the byte.

The recommended encoding scheme to use is UTF-8. However,

for compatibility reasons, if an encoding is not specified,

then the default encoding of the platform is used.

其他所有的字符都是不安全的，首先按照编码规范转换成一个或更多的字节。每一个字节被表示成

3字符的字符串%xy。xy是该字节的两个十六进制位表示，推荐的编码规范是UTF-8。

然而，出于兼容性考虑，如果编码没有被指定，那么默认平台所使用的编码。

</ul>

For example using UTF-8 as the encoding scheme the string "The

string ü@foo-bar" would get converted to

"The+string+%C3%BC%40foo-bar" because in UTF-8 the character

ü is encoded as two bytes C3 (hex) and BC (hex), and the

character @ is encoded as one byte 40 (hex).

以UTF-8编码举例，字符串“The string ü@foo-bar”将被转换成“The+string+%C3%BC%40foo-bar”，

因为在UTF-8中，字符ü被编码成C3(16进制)和BC(16进制)，字符@被编码成一个字节40(16进制)。

<DL>

<DT>Since:</DT>

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Method Summary</TD>

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<CODE>static <A HREF="../../java/lang/String.html" title="class in java.lang">String</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLEncoder.html#encode(java.lang.String)">encode</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> s)</CODE>

Deprecated. The resulting string may vary depending on the platform's

default encoding. Instead, use the encode(String,String)

method to specify the encoding.

结果字符串可能根据平台默认编码而改变。代之以使用encode(String,String)方法来指定编码。</TD>

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<CODE>static <A HREF="../../java/lang/String.html" title="class in java.lang">String</A></CODE></TD>

<TD><CODE><A HREF="../../java/net/URLEncoder.html#encode(java.lang.String, java.lang.String)">encode</A>(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> s,

<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> enc)</CODE>

Translates a string into <code>application/x-www-form-urlencoded</code>

format using a specific encoding scheme.

使用指定的编码规范将字符串转换成application/x-www-form-urlencoded格式。</TD>

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<TD>Methods inherited from class java.lang.<A HREF="../../java/lang/Object.html" title="class in java.lang">Object</A></TD>

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<TD><CODE><A HREF="../../java/lang/Object.html#clone()">clone</A>, <A HREF="../../java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="../../java/lang/Object.html#finalize()">finalize</A>, <A HREF="../../java/lang/Object.html#getClass()">getClass</A>, <A HREF="../../java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="../../java/lang/Object.html#notify()">notify</A>, <A HREF="../../java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="../../java/lang/Object.html#toString()">toString</A>, <A HREF="../../java/lang/Object.html#wait()">wait</A>, <A HREF="../../java/lang/Object.html#wait(long)">wait</A>, <A HREF="../../java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>

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Method Detail</TD>

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encode</H3>

<PRE>

public static <A HREF="../../java/lang/String.html" title="class in java.lang">String</A> encode(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> s)</PRE>

<DL>

<DD>Deprecated. The resulting string may vary depending on the platform's

default encoding. Instead, use the encode(String,String)

method to specify the encoding.

结果字符串可能根据平台默认编码而改变。代之以使用encode(String,String)方法来指定编码。

<DD>Translates a string into <code>x-www-form-urlencoded</code>

format. This method uses the platform's default encoding

as the encoding scheme to obtain the bytes for unsafe characters.

将字符串转换成application/x-www-form-urlencoded格式。该方法使用平台默认的编码作为编码规范来获得非安全字符的字节。

<DT>Parameters:<DD><CODE>s</CODE> - <code>String</code> to be translated. 要转换的字符串。

<DT>Returns:<DD>the translated <code>String</code>. 转换后的字符串。</DL>

</DD>

</DL>

<HR>

encode</H3>

<PRE>

public static <A HREF="../../java/lang/String.html" title="class in java.lang">String</A> encode(<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> s,

<A HREF="../../java/lang/String.html" title="class in java.lang">String</A> enc)

throws <A HREF="../../java/io/UnsupportedEncodingException.html" title="class in java.io">UnsupportedEncodingException</A></PRE>

<DL>

<DD>Translates a string into <code>application/x-www-form-urlencoded</code>

format using a specific encoding scheme. This method uses the

supplied encoding scheme to obtain the bytes for unsafe

characters.

使用指定的编码规范将字符串转换成application/x-www-form-urlencoded格式。该方法使用支持的编码规范来获得非安全字符的字节。

Note: The <a href=

"http://www.w3.org/TR/html40/appendix/notes.html#non-ascii-chars">

World Wide Web Consortium Recommendation</a> states that

UTF-8 should be used. Not doing so may introduce

incompatibilites.

World Wide Web Consortium Recommendation声明应该使用UTF-8，不这样做可能造成不兼容。

<DT>Parameters:<DD><CODE>s</CODE> - <code>String</code> to be translated. 要转换的字符串。<DD><CODE>enc</CODE> - The name of a supported

<a href="../lang/package-summary.html#charenc">character

encoding</a>. 支持的字符编码名称。

<DT>Returns:<DD>the translated <code>String</code>. 转换后的字符串。

<DT>Throws:

<DD><CODE><A HREF="../../java/io/UnsupportedEncodingException.html" title="class in java.io">UnsupportedEncodingException</A></CODE> - If the named encoding is not supported

如果不支持指定名称的编码抛出<DT>Since:</DT>

<DT>See Also:<DD><A HREF="../../java/net/URLDecoder.html#decode(java.lang.String, java.lang.String)"><CODE>URLDecoder.decode(java.lang.String, java.lang.String)</CODE></A></DL>

</DD>

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