json数据一次读取多条数据（数组形式，数组前面没有字符和有字符）的操作方法

适用于读取的数据如图所示的数组格式

public static List<Userz> getActivityList2(String url,String id)
   throws JSONException, ClientProtocolException, IOException {
  String back = Constz.back;
  url = Constz.IPAddress + url;

  List<Userz> list = new ArrayList<Userz>();

  HttpClient httpClient = new DefaultHttpClient();
  HttpPost httpPost = new HttpPost(url);
  JSONObject jsonObject = new JSONObject();
  jsonObject.put("id", id);
 
  List<BasicNameValuePair> listPairs = new ArrayList<BasicNameValuePair>();

  listPairs.add(new BasicNameValuePair("json", jsonObject.toString()));

  System.out.println("  listPairs  " + listPairs.toString());
  httpPost.setEntity(new UrlEncodedFormEntity(listPairs, "utf-8"));
  HttpResponse response = httpClient.execute(httpPost);
  int code = response.getStatusLine().getStatusCode();
  System.out.println("code    " + code);
  if (code == 200) {
   HttpEntity entity = response.getEntity();
   // back=EntityUtils.toString(entity, "utf-8");
   String str = EntityUtils.toString(entity, "utf-8");
   // back = MakeFriendsItemStrToStr.StrToStr_life(str);
   System.out.println("str  " + str);
   list = getList_getActivityList(str);

  }

  return list;
 }

// 搜索得到str，然后转化成列表形式
 private static List<Userz> getList_getActivityList(String str) {
  List<Userz> list = new ArrayList<Userz>();
  try {
   JSONArray jArray = new JSONArray(str);
   for (int i = 0; i < jArray.length(); i++) {    
    JSONObject jsonObject = new JSONObject(jArray.getString(i));
    Userz userz = new Userz();
    userz.setNicheng_us(jsonObject.getString("nicheng"));// 昵称
    userz.setUserid_us(jsonObject.getString("userid"));// 对方ID
    userz.setAixin_us(jsonObject.getString("aixin"));
    userz.setChengzhang_us(jsonObject.getString("chengzhang"));
    userz.setPhoto_us(jsonObject.getString("photo"));
    list.add(userz);
   }
  } catch (JSONException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  return list;
 }

//如果想要解析的数组前面有字符如图格式

只需在getList_getActivityList这个方法里面添加修改一段代码即可

把 JSONArray jArray = new JSONArray(str);
换成

String xm = jsonObject.getString("kn");              //kn是json数组数据前面的字符
JSONArray jaArray = new JSONArray(xm);

ps：userz是自己定义的类

文件下载地址：http://download.csdn.net/detail/as425017946/9434604