在 org.apache.commons.io.FileUtils.copyURLToFile 上设置超时？

Question

I have some code that copies using httpCore util copyURLtoFile() but I can't seem to find anything about timeouts in the documentation like I was able to with httpClient. The file it's pulling shouldn't pull out, but depending on that is.... interesting.

    URL pjmUrl = new URL("myFile");
    File projLoad = new File("projLoad.txt");
    org.apache.commons.io.FileUtils.copyURLToFile(pjmUrl, projLoad);

If the third line should timeout, the program has no way to throw an error based on runtime or to check for threadInterrupted()

Answer 1

You must be looking at old javadocs. In the current release (2.4) here is an overload of the copyURLToFile method that has two timeout parameters:

  public static void copyURLToFile(URL source,
                             File destination,
                             int connectionTimeout,
                             int readTimeout)
                      throws IOException

As the javadoc explains, the time unit is milliseconds.

Reference: https://commons.apache.org/proper/commons-io/javadocs/api-2.4/org/apache/commons/io/FileUtils.html

Answer 2

Not true, the overloaded method

FileUtils.copyURLToFile(URL source,
                        File destination,
                        int connectionTimeout,
                        int readTimeout)

does not exist in the latest 2.4. version , although the method is listed in Javadoc:

http://commons.apache.org/proper/commons-io/javadocs/api-release/org/apache/commons/io/FileUtils.html#copyURLToFile(java.net.URL,%20java.io.File,%20int,%20int)

I'm positively sure that I'm using the 2.4 version of Apache commons-io.

PS: I also downloaded source ( http://www.carfab.com/apachesoftware//commons/io/source/commons-io-2.4-src.zip ) to make sure that the above method really doesn't exist (anymore?) and inside FileUtils.java there really isn't such method.

Answer 3

Check your maven dependencies, there might be another older version of common-io jar in your classpath. I had the same issue.