当表头设置参数类型为这个的时候，
conn.setRequestProperty(“Content-Type”,“application/x-www-form-urlencoded”);

如果参数用的是jsonstring的话，在请求中，参数会都跑到key中，而且不会自动识别key和value；

     String data = requestParams;HttpURLConnection conn = (HttpURLConnection) new URL(url).openConnection();//设置请求方式,请求超时信息conn.setRequestMethod("POST");conn.setRequestProperty("Content-Type","application/x-www-form-urlencoded");conn.setRequestProperty("Content-Length",String.valueOf(data.getBytes().length));conn.setReadTimeout(5000);conn.setConnectTimeout(5000);//设置运行输入,输出:conn.setDoOutput(true);conn.setDoInput(true);//Post方式不能缓存,需手动设置为false

// conn.setUseCaches(false);

     //获取输出流OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream(),"UTF-8");writer.write(data);writer.flush();writer.close();

将参数换成用string配合=&拼接成的数据就行；

比如需要name=‘123’，age=13
需要拼接string str = “name = 123&age=13”
然后直接str转成byte传进去就行

  StringBuilder stringBuilder = new StringBuilder();try {stringBuilder.append("apiKey="+ URLEncoder.encode(apiKey,"UTF-8"));stringBuilder.append("&jobNum="+ URLEncoder.encode(tv_job_num.getText().toString(),"UTF-8"));stringBuilder.append("&prodOrderNum="+ URLEncoder.encode(prodOrderNum,"UTF-8"));} catch (UnsupportedEncodingException e) {throw new RuntimeException(e);}

// jsonObject.put(“jobNum”,tv_job_num.getText().toString());
// jsonObject.put(“jobNum”,“HX2619”);
// jsonObject.put(“prodOrderNum”,prodOrderNum);
// jsonObject.put(“apiKey”,apiKey);

// return jsonObject.toJSONString();
return stringBuilder.toString();