Can anyone please share some java codes for getting started with google search api's.I searched on Internet but not found any proper documentation or good sample codes.The codes which I found doesn't seem to be working.I'll be thankful if anyone can help me.(I have obtained API key and custom search engine id).
Thanks.
I have changed the while loop in the code provided by @Zakaria above. It might not be a proper way of working it out but it gives you the result links of google search. You just need to parse the output. See here,
public static void main(String[] args) throws Exception {
String key="YOUR KEY";
String qry="Android";
URL url = new URL(
"https://www.googleapis.com/customsearch/v1?key="+key+ "&cx=013036536707430787589:_pqjad5hr1a&q="+ qry + "&alt=json");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
if(output.contains("\"link\": \"")){
String link=output.substring(output.indexOf("\"link\": \"")+("\"link\": \"").length(), output.indexOf("\","));
System.out.println(link); //Will print the google search links
}
}
conn.disconnect();
}
Hope it works for you too.
java.io.IOException: Server returned HTTP response code: 403 help me to solve this, i used above code only
For anyone who would need working example of Custom search API using Google library, you can use this method:
public static List<Result> search(String keyword){
Customsearch customsearch= null;
try {
customsearch = new Customsearch(new NetHttpTransport(),new JacksonFactory(), new HttpRequestInitializer() {
public void initialize(HttpRequest httpRequest) {
try {
// set connect and read timeouts
httpRequest.setConnectTimeout(HTTP_REQUEST_TIMEOUT);
httpRequest.setReadTimeout(HTTP_REQUEST_TIMEOUT);
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
List<Result> resultList=null;
try {
Customsearch.Cse.List list=customsearch.cse().list(keyword);
list.setKey(GOOGLE_API_KEY);
list.setCx(SEARCH_ENGINE_ID);
Search results=list.execute();
resultList=results.getItems();
}
catch ( Exception e) {
e.printStackTrace();
}
return resultList;
}
This method returns List of Result objects, so you can iterate through it
List<Result> results = new ArrayList<>();
try {
results = search(QUERY);
} catch (Exception e) {
e.printStackTrace();
}
for(Result result : results){
System.out.println(result.getDisplayLink());
System.out.println(result.getTitle());
// all attributes:
System.out.println(result.toString());
}
As you have noticed, you have to define your custom GOOGLE_API_KEY, SEARCH_ENGINE_ID, QUERY and HTTP_REQUEST_TIMEOUT, ie
private static final int HTTP_REQUEST_TIMEOUT = 3 * 600000;
I use gradle dependencies:
dependencies {
compile 'com.google.apis:google-api-services-customsearch:v1-rev57-1.23.0'
}
Well, I think that there is nothing special in the sense that you can use a Java RESTFUL client.
I tried the Custom API using that Java code and basing on the Google documentation :
public static void main(String[] args) throws IOException {
URL url = new URL(
"https://www.googleapis.com/customsearch/v1?key=YOUR-KEY&cx=013036536707430787589:_pqjad5hr1a&q=flowers&alt=json");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setRequestProperty("Accept", "application/json");
BufferedReader br = new BufferedReader(new InputStreamReader(
(conn.getInputStream())));
String output;
System.out.println("Output from Server .... \n");
while ((output = br.readLine()) != null) {
System.out.println(output);
}
conn.disconnect();
}
You have to replace "YOUR-KEY" with a one found on the Google APIs Console.
