java HttpClient 请求

java HttpClient 请求：具体代码如下：（引入的包都是io包）

方法二中的释放io资源，最开始没有在finally释放，被我们公司老大给说了，后来给修改为在finally释放。

方法一：

private static Object httpGet(String url)

{

//get请求返回结果

JSONObject jsonResult = null;

try {

DefaultHttpClient client = new DefaultHttpClient();

//发送get请求

HttpGet request = new HttpGet(url);

HttpResponse response = client.execute(request);

/**请求发送成功，并得到响应**/

if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {

/**读取服务器返回过来的json字符串数据**/

String strResult = EntityUtils.toString(response.getEntity());

/**把json字符串转换成json对象**/

jsonResult = JSONObject.parseObject(strResult);

url = URLDecoder.decode(url, "UTF-8");

} else {

}

} catch (IOException e) {

}

return null;

}

方法二：

publicJSONObjecthttpGet(Stringreq_url) {

StringBufferbuffer=newStringBuffer();

InputStreaminputStream=null;

HttpURLConnectionhttpUrlConn=null;

InputStreamReaderinputStreamReader=null;

BufferedReaderbufferedReader=null;

try{

URLurl=newURL(req_url);

httpUrlConn= (HttpURLConnection)url.openConnection();

httpUrlConn.setDoOutput(false);

httpUrlConn.setDoInput(true);

httpUrlConn.setUseCaches(false);

httpUrlConn.setRequestMethod("GET");

httpUrlConn.connect();

// 将返回的输入流转换成字符串

inputStream=httpUrlConn.getInputStream();

inputStreamReader=newInputStreamReader(inputStream,"utf-8");

bufferedReader=newBufferedReader(inputStreamReader);

Stringstr=null;

while((str=bufferedReader.readLine()) !=null) {

buffer.append(str);

}

}catch(Exceptione) {

LOGGER.error(e.getMessage());

}finally{

// 释放资源

try{

inputStream.close();

bufferedReader.close();

inputStreamReader.close();

}catch(IOExceptione) {

LOGGER.error(e.getMessage());

}

inputStream=null;

httpUrlConn.disconnect();

}

returnJSONObject.parseObject(buffer.toString());

}