HttpURLConnection (learn-home-web 1.0.0 API)

java.lang.Object
- java.net.URLConnection
- - java.net.HttpURLConnection
  - - com.ptteng.course.util.aliPayUtil.apacheCommonUtil.httpclient.util.HttpURLConnection

```
public class HttpURLConnection
extends HttpURLConnection
```
Provides a HttpURLConnection wrapper around HttpClient's HttpMethod. This allows existing code to easily switch to HttpClieht without breaking existing interfaces using the JDK HttpURLConnection. Note 1: The current implementations wraps only a connected HttpMethod, ie a method that has alreayd been used to connect to an HTTP server. Note 2: It is a best try effort as different version of the JDK have different behaviours for HttpURLConnection (And I'm not even including the numerous HttpURLConnection bugs!).

从以下版本开始:

2.0

版本:

$Id: HttpURLConnection.java 155418 2005-02-26 13:01:52Z dirkv $

作者:

Vincent Massol, Jeff Dever, Mike Bowler

字段概要
- 从类继承的字段 java.net.HttpURLConnection
  chunkLength, fixedContentLength, fixedContentLengthLong, HTTP_ACCEPTED, HTTP_BAD_GATEWAY, HTTP_BAD_METHOD, HTTP_BAD_REQUEST, HTTP_CLIENT_TIMEOUT, HTTP_CONFLICT, HTTP_CREATED, HTTP_ENTITY_TOO_LARGE, HTTP_FORBIDDEN, HTTP_GATEWAY_TIMEOUT, HTTP_GONE, HTTP_INTERNAL_ERROR, HTTP_LENGTH_REQUIRED, HTTP_MOVED_PERM, HTTP_MOVED_TEMP, HTTP_MULT_CHOICE, HTTP_NO_CONTENT, HTTP_NOT_ACCEPTABLE, HTTP_NOT_AUTHORITATIVE, HTTP_NOT_FOUND, HTTP_NOT_IMPLEMENTED, HTTP_NOT_MODIFIED, HTTP_OK, HTTP_PARTIAL, HTTP_PAYMENT_REQUIRED, HTTP_PRECON_FAILED, HTTP_PROXY_AUTH, HTTP_REQ_TOO_LONG, HTTP_RESET, HTTP_SEE_OTHER, HTTP_SERVER_ERROR, HTTP_UNAUTHORIZED, HTTP_UNAVAILABLE, HTTP_UNSUPPORTED_TYPE, HTTP_USE_PROXY, HTTP_VERSION, instanceFollowRedirects, responseCode, responseMessage
- 从类继承的字段 java.net.URLConnection
  allowUserInteraction, connected, doInput, doOutput, ifModifiedSince, useCaches

构造器概要

构造器
限定符	构造器和说明
	`HttpURLConnection(HttpMethod method, URL url)` Creates an `HttpURLConnection` from a `HttpMethod`.
`protected`	`HttpURLConnection(URL url)` Create an instance.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`connect()` Not available: the data must have already been retrieved.
`void`	`disconnect()` Not yet implemented.
`boolean`	`getAllowUserInteraction()` Not yet implemented.
`Object`	`getContent()` Not yet implemented.
`Object`	`getContent(Class[] classes)` Not yet implemented.
`boolean`	`getDefaultUseCaches()` Not available: the data must have already been retrieved.
`boolean`	`getDoInput()` Not yet implemented.
`boolean`	`getDoOutput()` Not yet implemented.
`InputStream`	`getErrorStream()` Not yet implemented.
`String`	`getHeaderField(int position)` Return the header field at the specified position
`String`	`getHeaderField(String name)` Return the header field
`String`	`getHeaderFieldKey(int keyPosition)` Return the header field key
`long`	`getIfModifiedSince()` Not yet implemented.
`InputStream`	`getInputStream()` Gets an input stream for the HttpMethod response body.
`boolean`	`getInstanceFollowRedirects()` Not yet implemented.
`OutputStream`	`getOutputStream()`
`Permission`	`getPermission()` Not yet implemented.
`String`	`getRequestMethod()` Return the request method.
`String`	`getRequestProperty(String key)` Not yet implemented.
`int`	`getResponseCode()` Return the response code.
`String`	`getResponseMessage()` Return the response message
`URL`	`getURL()` Return the URL
`boolean`	`getUseCaches()` Not yet implemented.
`void`	`setAllowUserInteraction(boolean isAllowInteraction)` Not available: the data must have already been retrieved.
`void`	`setDefaultUseCaches(boolean isUsingCaches)` Not available: the data must have already been retrieved.
`void`	`setDoInput(boolean isInput)` Not available: the data must have already been retrieved.
`void`	`setDoOutput(boolean isOutput)` Not available: the data must have already been retrieved.
`void`	`setIfModifiedSince(long modificationDate)` Not available: the data must have already been retrieved.
`void`	`setInstanceFollowRedirects(boolean isFollowingRedirects)` Not available: the data must have already been retrieved.
`void`	`setRequestMethod(String method)` Not available: the data must have already been retrieved.
`void`	`setRequestProperty(String key, String value)` Not available: the data must have already been retrieved.
`void`	`setUseCaches(boolean isUsingCaches)` Not available: the data must have already been retrieved.
`boolean`	`usingProxy()` Not yet implemented.

从类继承的方法 java.net.HttpURLConnection
getFollowRedirects, getHeaderFieldDate, setChunkedStreamingMode, setFixedLengthStreamingMode, setFixedLengthStreamingMode, setFollowRedirects

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - HttpURLConnection
```
public HttpURLConnection(HttpMethod method,
                         URL url)
```
    Creates an HttpURLConnection from a HttpMethod.
    
    参数:
    
    method - the theMethod that was used to connect to the HTTP server and which contains the returned data.
    
    url - the URL to which we are connected (includes query string)
  - HttpURLConnection
```
protected HttpURLConnection(URL url)
```
    Create an instance.
    
    参数:
    
    url - The URL.
    
    另请参阅:
    
    HttpURLConnection.HttpURLConnection(URL)
- 方法详细资料
  - getInputStream
```
public InputStream getInputStream()
                           throws IOException
```
    Gets an input stream for the HttpMethod response body.
    
    覆盖:
    
    getInputStream 在类中 URLConnection
    
    返回:
    
    The input stream.
    
    抛出:
    
    IOException - If an IO problem occurs.
    
    另请参阅:
    
    URLConnection.getInputStream(), HttpMethod.getResponseBodyAsStream()
  - getErrorStream
```
public InputStream getErrorStream()
```
    Not yet implemented. Return the error stream.
    
    覆盖:
    
    getErrorStream 在类中 HttpURLConnection
    
    另请参阅:
    
    HttpURLConnection.getErrorStream()
  - disconnect
```
public void disconnect()
```
    Not yet implemented.
    
    指定者:
    
    disconnect 在类中 HttpURLConnection
    
    另请参阅:
    
    HttpURLConnection.disconnect()
  - connect
```
public void connect()
             throws IOException
```
    Not available: the data must have already been retrieved.
    
    指定者:
    
    connect 在类中 URLConnection
    
    抛出:
    
    IOException - If an IO problem occurs.
    
    另请参阅:
    
    URLConnection.connect()
  - usingProxy
```
public boolean usingProxy()
```
    Not yet implemented.
    
    指定者:
    
    usingProxy 在类中 HttpURLConnection
    
    返回:
    
    true if we are using a proxy.
    
    另请参阅:
    
    HttpURLConnection.usingProxy()
  - getRequestMethod
```
public String getRequestMethod()
```
    Return the request method.
    
    覆盖:
    
    getRequestMethod 在类中 HttpURLConnection
    
    返回:
    
    The request method.
    
    另请参阅:
    
    HttpURLConnection.getRequestMethod(), HttpMethod.getName()
  - getResponseCode
```
public int getResponseCode()
                    throws IOException
```
    Return the response code.
    
    覆盖:
    
    getResponseCode 在类中 HttpURLConnection
    
    返回:
    
    The response code.
    
    抛出:
    
    IOException - If an IO problem occurs.
    
    另请参阅:
    
    HttpURLConnection.getResponseCode(), HttpMethod.getStatusCode()
  - getResponseMessage
```
public String getResponseMessage()
                          throws IOException
```
    Return the response message
    
    覆盖:
    
    getResponseMessage 在类中 HttpURLConnection
    
    返回:
    
    The response message
    
    抛出:
    
    IOException - If an IO problem occurs.
    
    另请参阅:
    
    HttpURLConnection.getResponseMessage(), HttpMethod.getStatusText()
  - getHeaderField
```
public String getHeaderField(String name)
```
    Return the header field
    
    覆盖:
    
    getHeaderField 在类中 URLConnection
    
    参数:
    
    name - the name of the header
    
    返回:
    
    the header field.
    
    另请参阅:
    
    URLConnection.getHeaderField(String), HttpMethod.getResponseHeaders()
  - getHeaderFieldKey
```
public String getHeaderFieldKey(int keyPosition)
```
    Return the header field key
    
    覆盖:
    
    getHeaderFieldKey 在类中 HttpURLConnection
    
    参数:
    
    keyPosition - The key position
    
    返回:
    
    The header field key.
    
    另请参阅:
    
    HttpURLConnection.getHeaderFieldKey(int), HttpMethod.getResponseHeaders()
  - getHeaderField
```
public String getHeaderField(int position)
```
    Return the header field at the specified position
    
    覆盖:
    
    getHeaderField 在类中 HttpURLConnection
    
    参数:
    
    position - The position
    
    返回:
    
    The header field.
    
    另请参阅:
    
    HttpURLConnection.getHeaderField(int), HttpMethod.getResponseHeaders()
  - getURL
```
public URL getURL()
```
    Return the URL
    
    覆盖:
    
    getURL 在类中 URLConnection
    
    返回:
    
    The URL.
    
    另请参阅:
    
    URLConnection.getURL()
  - setInstanceFollowRedirects
```
public void setInstanceFollowRedirects(boolean isFollowingRedirects)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setInstanceFollowRedirects 在类中 HttpURLConnection
  - getInstanceFollowRedirects
```
public boolean getInstanceFollowRedirects()
```
    Not yet implemented.
    
    覆盖:
    
    getInstanceFollowRedirects 在类中 HttpURLConnection
  - setRequestMethod
```
public void setRequestMethod(String method)
                      throws ProtocolException
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setRequestMethod 在类中 HttpURLConnection
    
    抛出:
    
    ProtocolException
    
    另请参阅:
    
    HttpURLConnection.setRequestMethod(String)
  - getPermission
```
public Permission getPermission()
                         throws IOException
```
    Not yet implemented.
    
    覆盖:
    
    getPermission 在类中 HttpURLConnection
    
    抛出:
    
    IOException
    
    另请参阅:
    
    HttpURLConnection.getPermission()
  - getContent
```
public Object getContent()
                  throws IOException
```
    Not yet implemented.
    
    覆盖:
    
    getContent 在类中 URLConnection
    
    抛出:
    
    IOException
    
    另请参阅:
    
    URLConnection.getContent()
  - getContent
```
public Object getContent(Class[] classes)
                  throws IOException
```
    Not yet implemented.
    
    覆盖:
    
    getContent 在类中 URLConnection
    
    抛出:
    
    IOException
  - getOutputStream
```
public OutputStream getOutputStream()
                             throws IOException
```
    覆盖:
    
    getOutputStream 在类中 URLConnection
    
    抛出:
    
    IOException
    
    另请参阅:
    
    URLConnection.getOutputStream()
  - setDoInput
```
public void setDoInput(boolean isInput)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setDoInput 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setDoInput(boolean)
  - getDoInput
```
public boolean getDoInput()
```
    Not yet implemented.
    
    覆盖:
    
    getDoInput 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getDoInput()
  - setDoOutput
```
public void setDoOutput(boolean isOutput)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setDoOutput 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setDoOutput(boolean)
  - getDoOutput
```
public boolean getDoOutput()
```
    Not yet implemented.
    
    覆盖:
    
    getDoOutput 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getDoOutput()
  - setAllowUserInteraction
```
public void setAllowUserInteraction(boolean isAllowInteraction)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setAllowUserInteraction 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setAllowUserInteraction(boolean)
  - getAllowUserInteraction
```
public boolean getAllowUserInteraction()
```
    Not yet implemented.
    
    覆盖:
    
    getAllowUserInteraction 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getAllowUserInteraction()
  - setUseCaches
```
public void setUseCaches(boolean isUsingCaches)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setUseCaches 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setUseCaches(boolean)
  - getUseCaches
```
public boolean getUseCaches()
```
    Not yet implemented.
    
    覆盖:
    
    getUseCaches 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getUseCaches()
  - setIfModifiedSince
```
public void setIfModifiedSince(long modificationDate)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setIfModifiedSince 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setIfModifiedSince(long)
  - getIfModifiedSince
```
public long getIfModifiedSince()
```
    Not yet implemented.
    
    覆盖:
    
    getIfModifiedSince 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getIfModifiedSince()
  - getDefaultUseCaches
```
public boolean getDefaultUseCaches()
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    getDefaultUseCaches 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getDefaultUseCaches()
  - setDefaultUseCaches
```
public void setDefaultUseCaches(boolean isUsingCaches)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setDefaultUseCaches 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setDefaultUseCaches(boolean)
  - setRequestProperty
```
public void setRequestProperty(String key,
                               String value)
```
    Not available: the data must have already been retrieved.
    
    覆盖:
    
    setRequestProperty 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.setRequestProperty(String,String)
  - getRequestProperty
```
public String getRequestProperty(String key)
```
    Not yet implemented.
    
    覆盖:
    
    getRequestProperty 在类中 URLConnection
    
    另请参阅:
    
    URLConnection.getRequestProperty(String)

类 HttpURLConnection

字段概要

从类继承的字段 java.net.HttpURLConnection

从类继承的字段 java.net.URLConnection

构造器概要

方法概要

从类继承的方法 java.net.HttpURLConnection

从类继承的方法 java.net.URLConnection

从类继承的方法 java.lang.Object

构造器详细资料

HttpURLConnection

HttpURLConnection

方法详细资料

getInputStream

getErrorStream

disconnect

connect

usingProxy

getRequestMethod

getResponseCode

getResponseMessage

getHeaderField

getHeaderFieldKey

getHeaderField

getURL

setInstanceFollowRedirects

getInstanceFollowRedirects

setRequestMethod

getPermission

getContent

getContent

getOutputStream

setDoInput

getDoInput

setDoOutput

getDoOutput

setAllowUserInteraction

getAllowUserInteraction

setUseCaches

getUseCaches

setIfModifiedSince

getIfModifiedSince

getDefaultUseCaches

setDefaultUseCaches

setRequestProperty

getRequestProperty