java - How to send a json string as an input parameter to a POST request in android -

and facing problem in sending json string post request.

this url: http://172.25.183.183:8080/jiraservice/rest/runquery

key : query

value:

{ "jql": "project=<projectkey>",   "startat": 0,    "maxresults": 100,   "fields": [      "summary",      "customfield_10006",      "status",      "description"    ] } 

where <projectkey> value stored in shared preferences please help

this code

 try{             textview op=(textview) findviewbyid(r.id.resp);              url url=new url("http://172.25.183.183:8080/jiraservice/rest/runquery");             httpsurlconnection conn=(httpsurlconnection)url.openconnection();             conn.setrequestmethod("post");             string projectkey=home.savedid;             jsonobject jsonparam = new jsonobject();     jsonparam.put("query", "             "{ \"jql\": \"project=" + projectkey + "\", \"startat\": 0, \"maxresults\": 100, \"fields\": [\"summary\",\"customfield_10006\", \"status\", \"description\"] }"");  how send parameters??               conn.setdooutput(true);             dataoutputstream dbstrm=new dataoutputstream(conn.getoutputstream());             dbstrm.flush();             dbstrm.close();              int respnse=conn.getresponsecode();             string output="request url"+url;             output+=system.getproperty("line.separator");             output+=system.getproperty("line.separator")+"response code"+respnse;             bufferedreader br=new bufferedreader(new inputstreamreader(conn.getinputstream()));             string line= "";             stringbuilder respop=new stringbuilder();             while((line=br.readline())!=null){                 respop.append(line);             }             br.close();             output +=system.getproperty("line.separator")+respop.tostring();             op.settext(output);           }catch(malformedurlexception ae){             ae.printstacktrace();         }catch (ioexception e){             e.printstacktrace();         } 

 try{              url url=new url("http://172.25.183.183:8080/jiraservice/rest/runquery");             httpurlconnection conn=(httpurlconnection)url.openconnection();             conn.setrequestmethod("post");             conn.setdoinput(true);             conn.setdooutput(true);             string projectkey=home.savedid;             list<namevaluepair> params = new arraylist<namevaluepair>();             params.add(new basicnamevaluepair("query"," { \"jql\": \"project=" + projectkey + "\", \"startat\": 0, \"maxresults\": 100, \"fields\": [\"summary\",\"customfield_10006\", \"status\", \"description\"] }"));             outputstream os = conn.getoutputstream();             bufferedwriter writer = new bufferedwriter(                     new outputstreamwriter(os, "utf-8"));             writer.write(getquery(params));             writer.flush();             writer.close();             os.close();              conn.connect();              int respnse=conn.getresponsecode();             string output="request url"+url;             output+=system.getproperty("line.separator");             output+=system.getproperty("line.separator")+"response code"+respnse;             bufferedreader br=new bufferedreader(new inputstreamreader(conn.getinputstream()));             string line= "";             stringbuilder respop=new stringbuilder();             while((line=br.readline())!=null){                 respop.append(line);             }             br.close();             output +=system.getproperty("line.separator")+"issuelist api"+respop.tostring();             system.out.println("issuelist"+ output);             string respfield=resp(respop.tostring());             system.out.println(" response"+ respfield);             }catch(malformedurlexception ae){             ae.printstacktrace();         }catch (ioexception e){             e.printstacktrace();         } 

getquery() method

private string getquery(list<namevaluepair> params) throws unsupportedencodingexception     {         stringbuilder result = new stringbuilder();         boolean first = true;          (namevaluepair pair : params)         {             if (first)                 first = false;             else                 result.append("&");              result.append(urlencoder.encode(pair.getname(), "utf-8"));             result.append("=");             result.append(urlencoder.encode(pair.getvalue(), "utf-8"));         }          return result.tostring();     }