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Android发生与接收JSON数据

 2013-01-31 16:56:24 来源:WEB开发网   
核心提示: 客户端向服务器端发送数据,这里用到了两种,Android发生与接收JSON数据,一种是在url中带参数,一种是json数据发送方式;url带参数的写法:url+/?r=m/calendar/contact_list&uid=3&&subscriptionslist[pageindex]=10&subscription

 客户端向服务器端发送数据,这里用到了两种,一种是在url中带参数,一种是json数据发送方式;
url带参数的写法:
url+/?r=m/calendar/contact_list&uid=3&&subscriptionslist[pageindex]=10&subscriptionslist[recordlimit]=10
从“&”符号之后一连串都是参数。
发送方式代码编写
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(HttpUtil.BASIC_URL
+ HttpUtil.SUBSCRIPTION_URL);
try{
if (cookie != null) {
// httpClient.setCookieStore(LoginJsonUtil.cookie);
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
nameValuePair.add(new BasicNameValuePair("uid",
uid));
nameValuePair.add(new BasicNameValuePair("subscriptionslist[pageindex]",
subscriptionslist_pageindex));
nameValuePair.add(new BasicNameValuePair("subscriptionslist[recordlimit]",
subscriptionslist_recordlimit));
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
传递参数使用nameValuePair。
如果使用cookie的话,使用上段代码中注释掉的部分
httpClient.setCookieStore(LoginJsonUtil.cookie);

使用json数据格式发送信息向服务器端:
HttpClient httpClient = new DefaultHttpClient();
try {
HttpPost httpPost = new HttpPost(BASIC_URL + url);
List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();
JSONObject jsonObject = new JSONObject();
JSONObject jsonObject2 = new JSONObject();
jsonObject.put("uemail", userbean.getEmail());
jsonObject.put("password", userbean.getPassword());
jsonObject2.put("userbean", jsonObject);
nameValuePair.add(new BasicNameValuePair("jsonString", jsonObject
.toString()));
Log.i("lifeweeker", jsonObject2.toString());
httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));
这里每个put的顺序我不清楚有没有规定,我是严格按照提供的前后顺序来组合json数据格式的。

json数据格式解析我自己分为两种;
一种是普通的,一种是带有数组形式的;
普通形式的:
服务器端返回的json数据格式如下:
{"userbean":{"Uid":"100196","Showname":"\u75af\u72c2\u7684\u7334\u5b50","Avtar":null,"State":1}}
分析代码如下:
// TODO 状态处理 500 200
int res = 0;
res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
if (res == 200) {

HttpResponse httpResponse = httpClient.execute(httpPost);
StringBuilder builder = new StringBuilder();
BufferedReader bufferedReader2 = new BufferedReader(
new InputStreamReader(httpResponse.getEntity().getContent()));
String str2 = "";
for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2
.readLine()) {
builder.append(s);
}
Log.i("cat", ">>>>>>" + builder.toString());

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Tags:Android 发生 接收

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