I'm building a URL to gain access to a users Google calendar with the google-javi-api as such:
CalendarUrl url = CalendarUrl.forEventFeed("accountName", "private", "full");
which returns me this url:
"https://www.google.com/calendar/feeds/user@gmail.com/private/full?prettyprint=true"
I would like to set parameters to this URL with startMin and startMax parameters so the URL would eventually look like this:
"https://www.google.com/calendar/feeds/default/开发者_JAVA技巧private/full?start-min=2011-06-00T00:00:00&start-max=2011-06-24T23:59:59"
All of my attempts at this have failed, and after logging the URL that is being returned, I find that the "?" is being replaced by "%3F" and ampersands are being replaced by "&"
The incorrect url that is bring returned is:
"https://www.google.com/calendar/feeds/default/private/full%3Fstart-min=2011-06-00T00:00:00&start-max=2011-06-24T23:59:59"
I'm pretty sure the reason my result set is null is because of those character replacements. How do I append the original URL with the new parameters?
**If you're wondering how I'm building this url, I'm using the CalendarURL class from this sample Android implementation of Google Calendar.
EDIT
More specifically, in the CalendarURL class, I can add parts to the "path" of the URL, but I can't find a way to include a query parameter. Does this API not include a way to specify a parameter?
The proper way to create a URL using google-java-client-api is to extend the GoogleUrl object. (I'm using Google Latitude here as a sample. I create a GoogleUrl object, and later on you'll see how it gets used).
The Google URL object
- You construct a URL object extending GoogleUrl
- You annotate the parameters you would like to customize on the URL using the @Key annotation
- You provide a constructor that takes on the root url.
- You add parts to the context using the pathParts.add method
A sample URL object looks like this:
public final class LatitudeUrl extends GoogleUrl {
@Key
public String granularity;
@Key("min-time")
public String minTime;
@Key("max-time")
public String maxTime;
@Key("max-results")
public String maxResults;
/** Constructs a new Latitude URL from the given encoded URI. */
public LatitudeUrl(String encodedUrl) {
super(encodedUrl);
}
private static LatitudeUrl root() {
return new LatitudeUrl("https://www.googleapis.com/latitude/v1");
}
public static LatitudeUrl forCurrentLocation() {
LatitudeUrl result = root();
result.pathParts.add("currentLocation");
return result;
}
public static LatitudeUrl forLocation() {
LatitudeUrl result = root();
result.pathParts.add("location");
return result;
}
public static LatitudeUrl forLocation(Long timestampMs) {
LatitudeUrl result = forLocation();
result.pathParts.add(timestampMs.toString());
return result;
}
}
Usage
You use this object to construct the URL, just fill in your parameters (the @Key annotated fields), and execute the build() method to get a string representation of it :
LatitudeUrl latitudeUrl = LatitudeUrl.forLocation();
latitudeUrl.maxResults="20";
latitudeUrl.minTime="123";
latitudeUrl.minTime="456";
System.out.println(latitudeUrl.build());
Output :
https://www.googleapis.com/latitude/v1/location?max-results=20&min-time=456
After some serious digging I found out how to include query parameters using the google-java-api.
To add any of these Query Parameters to a URL, do the following:
After building the basic CalendarUrl, call .put("Key", "Value") to add query parameters. For example:
CalendarUrl eventFeedUrl = CalendarUrl.forEventFeed("user@gmail.com", "private", "full");
eventFeedUrl.put("start-min", "2011-06-01T00:00:00");
eventFeedUrl.put("start-max", "2011-06-22T00:00:00");
I just happened to stumble across a thread buried in the midst of a junk-load of unfiltered "issues" at the project home at Google. There is plenty of documentation for using the gData api, but there is NOTHING for the google-java-api. It took me almost 2 days to find this simple method call. Very frustrating. I hope whoever reads this didn't go through what I went through to find out how to accomplish this simple, yet crucial task. It should be better documented.
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