Package org.apache.tools.ant.taskdefs

Class Get

java.lang.Object
org.apache.tools.ant.ProjectComponent
org.apache.tools.ant.Task
org.apache.tools.ant.taskdefs.Get
All Implemented Interfaces:
java.lang.Cloneable
public class Get
extends Task
Gets a particular file from a URL source. Options include verbose reporting, timestamp based fetches and controlling actions on failures. NB: access through a firewall only works if the whole Java runtime is correctly configured.
Since:
Ant 1.1

  • Constructor Details

    • Get

      public Get()

  • Method Details

    • execute

      public void execute() throws BuildException
      Does the work.
      Overrides:
      execute in class Task
      Throws:
      BuildException - Thrown in unrecoverable error.

    • doGet

      @Deprecated public boolean doGet​(int logLevel, Get.DownloadProgress progress) throws java.io.IOException
      Deprecated.
      only gets the first configured resource
      make a get request, with the supplied progress and logging info. All the other config parameters are set at the task level, source, dest, ignoreErrors, etc.
      Parameters:
      logLevel - level to log at, see Project.log(String, int)
      progress - progress callback; null for no-callbacks
      Returns:
      true for a successful download, false otherwise. The return value is only relevant when ignoreErrors is true, as when false all failures raise BuildExceptions.
      Throws:
      java.io.IOException - for network trouble
      BuildException - for argument errors, or other trouble when ignoreErrors is false.

    • doGet

      public boolean doGet​(java.net.URL source, java.io.File dest, int logLevel, Get.DownloadProgress progress) throws java.io.IOException
      make a get request, with the supplied progress and logging info. All the other config parameters like ignoreErrors are set at the task level.
      Parameters:
      source - the URL to get
      dest - the target file
      logLevel - level to log at, see Project.log(String, int)
      progress - progress callback; null for no-callbacks
      Returns:
      true for a successful download, false otherwise. The return value is only relevant when ignoreErrors is true, as when false all failures raise BuildExceptions.
      Throws:
      java.io.IOException - for network trouble
      BuildException - for argument errors, or other trouble when ignoreErrors is false.
      Since:
      Ant 1.8.0

    • log

      public void log​(java.lang.String msg, int msgLevel)
      Description copied from class: Task
      Logs a message with the given priority. This delegates the actual logging to the project.
      Overrides:
      log in class Task
      Parameters:
      msg - The message to be logged. Should not be null.
      msgLevel - The message priority at which this message is to be logged.

    • setSrc

      public void setSrc​(java.net.URL u)
      Set an URL to get.
      Parameters:
      u - URL for the file.

    • add

      public void add​(ResourceCollection rc)
      Adds URLs to get.
      Parameters:
      rc - ResourceCollection
      Since:
      Ant 1.8.0

    • setDest

      public void setDest​(java.io.File dest)
      Where to copy the source file.
      Parameters:
      dest - Path to file.

    • setVerbose

      public void setVerbose​(boolean v)
      If true, show verbose progress information.
      Parameters:
      v - if "true" then be verbose

    • setQuiet

      public void setQuiet​(boolean v)
      If true, set default log level to Project.MSG_ERR.
      Parameters:
      v - if "true" then be quiet
      Since:
      Ant 1.9.4

    • setIgnoreErrors

      public void setIgnoreErrors​(boolean v)
      If true, log errors but do not treat as fatal.
      Parameters:
      v - if "true" then don't report download errors up to ant

    • setUseTimestamp

      public void setUseTimestamp​(boolean v)
      If true, conditionally download a file based on the timestamp of the local copy.

      In this situation, the if-modified-since header is set so that the file is only fetched if it is newer than the local file (or there is no local file) This flag is only valid on HTTP connections, it is ignored in other cases. When the flag is set, the local copy of the downloaded file will also have its timestamp set to the remote file time.

      Note that remote files of date 1/1/1970 (GMT) are treated as 'no timestamp', and web servers often serve files with a timestamp in the future by replacing their timestamp with that of the current time. Also, inter-computer clock differences can cause no end of grief.

      Parameters:
      v - "true" to enable file time fetching

    • setUsername

      public void setUsername​(java.lang.String u)
      Username for basic auth.
      Parameters:
      u - username for authentication

    • setPassword

      public void setPassword​(java.lang.String p)
      password for the basic authentication.
      Parameters:
      p - password for authentication

    • setMaxTime

      public void setMaxTime​(long maxTime)
      The time in seconds the download is allowed to take before being terminated.
      Parameters:
      maxTime - long
      Since:
      Ant 1.8.0

    • setRetries

      public void setRetries​(int r)
      The number of attempts to make for opening the URI, defaults to 3.

      The name of the method is misleading as a value of 1 means "don't retry on error" and a value of 0 meant don't even try to reach the URI at all.

      Parameters:
      r - number of attempts to make
      Since:
      Ant 1.8.0

    • setSkipExisting

      public void setSkipExisting​(boolean s)
      Skip files that already exist locally.
      Parameters:
      s - "true" to skip existing destination files
      Since:
      Ant 1.8.0

    • setUserAgent

      public void setUserAgent​(java.lang.String userAgent)
      HTTP connections only - set the user-agent to be used when communicating with remote server. if null, then the value is considered unset and the behaviour falls back to the default of the http API.
      Parameters:
      userAgent - String
      Since:
      Ant 1.9.3

    • setHttpUseCaches

      public void setHttpUseCaches​(boolean httpUseCache)
      HTTP connections only - control caching on the HttpUrlConnection: httpConnection.setUseCaches(); if false, do not allow caching on the HttpUrlConnection.

      Defaults to true (allow caching, which is also the HttpUrlConnection default value.

      Parameters:
      httpUseCache - boolean
      Since:
      Ant 1.8.0

    • setTryGzipEncoding

      public void setTryGzipEncoding​(boolean b)
      Whether to transparently try to reduce bandwidth by telling the server ant would support gzip encoding.

      Setting this to true also means Ant will uncompress .tar.gz and similar files automatically.

      Parameters:
      b - boolean
      Since:
      Ant 1.9.5

    • addConfiguredHeader

      public void addConfiguredHeader​(Header header)
      Add a nested header
      Parameters:
      header - to be added

    • createMapper

      public Mapper createMapper() throws BuildException
      Define the mapper to map source to destination files.
      Returns:
      a mapper to be configured.
      Throws:
      BuildException - if more than one mapper is defined.
      Since:
      Ant 1.8.0

    • add

      public void add​(FileNameMapper fileNameMapper)
      Add a nested filenamemapper.
      Parameters:
      fileNameMapper - the mapper to add.
      Since:
      Ant 1.8.0

    • isMoved

      public static boolean isMoved​(int responseCode)
      Does the response code represent a redirection?
      Since:
      1.10.10