android - Cannot get URL (with sql query) to be handled by DefaultHttpClient in java -

-

i've been struggling half day trying learn , stuck. goal query finance data yql yahoo finance tables. have set code androidhive example , able running correctly sample query. sample query grabs json object directly main url provide. yql, need convert sql query format httpclient recognize, , app keeps hanging , never returning response.

first, tried taking exact query string yql replicate search, me this:

https://query.yahooapis.com/v1/public/yql?q=select%20symbol%2cchange%20from%20yahoo.finance.quote%20where%20symbol%20in%20(%22sh%22%2c%22dog%22%2c%22rwm%22)&format=json&env=store%3a%2f%2fdatatables.org%2falltableswithkeys&callback=

that gives me null result when set url = above, , run following:

defaulthttpclient httpclient = new defaulthttpclient(); . . . httpget httpget = new httpget(url);     httpresponse = httpclient.execute(httpget);

if androidhive example url in code, works fine. if enter above url in browser, works fine. clearly, url not being entered correctly.

so read online need use urlencode convert syntax of url correct format. here's did:

private string url = "https://query.yahooapis.com/v1/public/yql?q=" +urlencoder.encode("select symbol, change yahoo.finance.quote symbol in (\"sh\",\"dog\".\"rwm\")")+"&format=json&env=store%3a%2f%2fdatatables.org%2falltableswithkeys&callback=";

that gives me 2 problems. first, tells me encode deprecated, , supposed use new syntax adds "utf-8" second string parameter, when that, compiler error of java.io.unsupportedencodingexception (ugh), tried running deprecated form, leaves app hanging forever original format.

i must doing obvious incorrect here...

okay - updated.

https!!! versus http. sample query did androidhive example http , yql query had https. if change http works, , didn't need urlencoder business. string directly yql worked.

now need start solving json parsing bugs, i've got data!


Comments

Post a Comment

Popular posts from this blog

c++ - llvm function pass ReplaceInstWithInst malloc -

-
#include "llvm/pass.h" #include "llvm/ir/module.h" #include "llvm/ir/function.h" #include "llvm/support/raw_ostream.h" #include "llvm/ir/legacypassmanager.h" #include "llvm/ir/instrtypes.h" #include "llvm/transforms/ipo/passmanagerbuilder.h" #include "llvm/ir/irbuilder.h" #include "llvm/transforms/utils/basicblockutils.h" using namespace llvm; namespace { struct replacepass : public functionpass { static char id; replacepass() : functionpass(id) {} virtual bool runonfunction(function &f) { allocainst* insttoreplace = ??? basicblock::iterator ii(insttoreplace); replaceinstwithinst(insttoreplace->getparent()->getinstlist(), ii, new allocainst(type::int32ty, 0, insttoreplace)); return true; } }; } char replacepass::id = 0; static void registerreplacepass(const passmanagerbuilder &, legacy::passmanagerbase &pm) { pm.add(new re
Read more

java.lang.NoClassDefFoundError When Creating New Android Project -

-
i've tried installing (and re-installing) android studio several times now, , each time, studio isn't able create new android project. when attempt initial android studio window (ie. basic 'create', 'open', 'import' etc options), i'm asked of questions in wizard, brief progress dialog, followed nothing @ all. if open incomplete project process creates choosing 'open' list, can try choosing create new android project menu. this has same issue, error message in output console time... java.lang.noclassdeffounderror: com/sun/xml/internal/bind/v2/model/annotation/annotationreader (wrong name: com/sun/xml/internal/bind/v0/model/qnnotation/annotationreader) note: when installed android studio, installed incompatible jdk (1.8, not 1.7). have had go default project settings change jdk uses 1.8. does know how can avoid this? there place should downloading jxb classes? missing in java paths? this appears have been caused cor
Read more

Decoding a Python 2 `tempfile` with python-future -

-
i'm attempting write python 2/3 compatible routine fetch csv file, decode latin_1 unicode , feed csv.dictreader in robust, scalable manner. for python 2/3 support, i'm using python-future including imporing open builtins , , importing unicode_literals consistent behaviour i'm hoping handle exceptionally large files spilling disk, using tempfile.spooledtemporaryfile i'm using io.textiowrapper handle decoding latin_1 encoding before feeding dictreader this works fine under python 3. the problem textiowrapper expects wrap stream conforms bufferediobase . unfortunately under python 2, although have imported python 3-style open , vanilla python 2 tempfile.spooledtemporaryfile still of course returns python 2 cstringio.stringo , instead of python 3 io.bytesio required textiowrapper . i can think of these possible approaches: wrap python 2 cstringio.stringo python 3-style io.bytesio . i'm not sure how approach - need write such wrapper or 1 ex
Read more