Android中用JSONj进行网络数据交互

服务器端：

public void doGet(HttpServletRequest request,

HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html");

String acceptjson = "";

BufferedReader br = new BufferedReader(new

InputStreamReader((ServletInputStream)request.getInputStream(), "utf-8"));

StringBuffer sb = new StringBuffer("");

String temp;

while ((temp = br.readLine()) != null)

{

sb.append(temp);

}

br.close();

acceptjson = sb.toString();

System.out.println(acceptjson);

JSONArray js=JSONArray.fromObject(acceptjson);

PrintWriter out = response.getWriter();

// 封装到实体类中

VehicleFaultInfo v = new VehicleFaultInfo();

for (Object ob : js) {

JSONObject jo=JSONObject.fromObject(ob);

v.setName(jo.getString("name"));

v.setCreateTime(jo.getString("createTime"));

v.setIdno(jo.getString("idno"));

v.setFaultRecord(jo.getString("faultRecord"));

v.setPenalty(jo.getDouble("penalty"));

v.setLicense(jo.getString("license"));

}

if (vedao.save(v))

// 响应保存结果

out.print("1");

else

// 响应保存结果

out.print("0");

out.flush();

out.close();

out.flush();

out.close();

}

Android客户端：

private StringEntity makeEntity_JSON(){

String name = myEditText1.getText().toString();

String idno = myEditText2.getText().toString();

String license = myEditText3.getText().toString();

String penalty = myEditText4.getText().toString();

String faultRecord = changeType(mySpinner.getSelectedItemPosition());

Date date = new Date();

String dateStr = new SimpleDateFormat("yy-MM-dd HH:mm").format(date);

JSONArray jsarray=new JSONArray();

JSONObject js=new JSONObject();

try {

js.put("name", name);

js.put("idno", idno);

js.put("license", license);

js.put("penalty", Double.parseDouble(penalty));

js.put("faultRecord", faultRecord);

js.put("createTime", dateStr);

jsarray.put(js);

return new StringEntity(jsarray.toString(),"utf-8");

} catch (JSONException e) {

e.printStackTrace();

return null;

}catch (UnsupportedEncodingException e) {

e.printStackTrace();

return null;

}

}

private boolean submit(){

String url=HttpUtil.BASE_URL+"/servlet/VehicleServlet";

HttpPost request = HttpUtil.getHttpPost(url);

request.setEntity(makeEntity_JSON());

String result= HttpUtil.queryStringForPost(request);

if(result!=null&&result.equals("1"))return true;

return false;

}