android客户端从服务器端获取json数据并解析的实现代码_Android获取json数据并解析

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47 浏览量更新于2023-05-04 评论 1 收藏 67KB PDF 举报

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android客户端从服务器端获取客户端从服务器端获取json数据并解析的实现代码数据并解析的实现代码

首先客户端从服务器端获取json数据

1、利用HttpUrlConnection

代码如下:

/**

* 从指定的URL中获取数组

* @param urlPath

* @return

* @throws Exception

public static String readParse(String urlPath) throws Exception {

ByteArrayOutputStream outStream = new ByteArrayOutputStream();

byte[] data = new byte[1024];

int len = 0;

URL url = new URL(urlPath);

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

InputStream inStream = conn.getInputStream();

while ((len = inStream.read(data)) != -1) {

outStream.write(data, 0, len);

}

inStream.close();

return new String(outStream.toByteArray());//通过out.Stream.toByteArray获取到写的数据

}

2、利用HttpClient

代码如下:

/**

* 访问数据库并返回JSON数据字符串

* @param params 向服务器端传的参数

* @param url

* @return

* @throws Exception

public static String doPost(List<NameValuePair> params, String url)

throws Exception {

String result = null;

// 获取HttpClient对象

HttpClient httpClient = new DefaultHttpClient();

// 新建HttpPost对象

HttpPost httpPost = new HttpPost(url);

if (params != null) {

// 设置字符集

HttpEntity entity = new UrlEncodedFormEntity(params, HTTP.UTF_8);

// 设置参数实体

httpPost.setEntity(entity);

}

/*// 连接超时

httpClient.getParams().setParameter(

CoreConnectionPNames.CONNECTION_TIMEOUT, 3000);

// 请求超时

httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT,

3000);*/

// 获取HttpResponse实例

HttpResponse httpResp = httpClient.execute(httpPost);

// 判断是够请求成功

if (httpResp.getStatusLine().getStatusCode() == 200) {

// 获取返回的数据

result = EntityUtils.toString(httpResp.getEntity(), “UTF-8”);

} else {

Log.i(“HttpPost”, “HttpPost方式请求失败”);

}

return result;

}

其次Json数据解析：

json数据：

[{“id”:”67″,”biaoTi”:”G”,”logo”:”http://www.nuoter.com/wtserver/resources/upload/13508741845270.png”,”logoLunbo”:”http://www.nuoter.com/wtserver/resources/upload/13509015004480.jpg”,”yuanJia”:”0″,”xianJia”:”0″},

{“id”:”64″,”biaoTi”:”444″,”logo”:”http://www.nuoter.com/wtserver/resources/upload/13508741704400.png”,”logoLunbo”:”http://172.16.1.75:8080/wtserver/resources/upload/13508741738500.png”,”yuanJia”:”0″,”xianJia”:”0″},

{“id”:”62″,”biaoTi”:”jhadasd”,”logo”:”http://www.nuoter.com/wtserver/resources/upload/13508741500450.png”,”logoLunbo”:”http://172.16.1.75:8080/wtserver/resources/upload/13508741557450.png”,”yuanJia”:”1″,”xianJia”:”0″}]

代码如下:

/**

* 解析

* @throws JSONException

private static ArrayList<HashMap<String, Object>> Analysis(String jsonStr)

throws JSONException {

/******************* 解析 ***********************/

JSONArray jsonArray = null;

// 初始化list数组对象

ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>();

jsonArray = new JSONArray(jsonStr);

for (int i = 0; i < jsonArray.length(); i++) {