HttpClient 中的get, post使用示例

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一、Get

示例代码
public static void test_httpClient_get(){
HttpClient httpClient = null;
try {
String url = “http://localhost:8080/testget“;

        httpClient = new DefaultHttpClient();        //连接超时设置，单位毫秒        httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000);        //读取超时， 单位毫秒        httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 60000);        String param1 = "param_";        String param2 = "param2";        //如果不需要传递参数，直接使用 HttpGet httpGet = new HttpGet(url)即可。        List<NameValuePair> list = new ArrayList<NameValuePair>();        list.add(new BasicNameValuePair("param1", param1));        list.add(new BasicNameValuePair("param2", param2));        String getParams = EntityUtils.toString(new UrlEncodedFormEntity(list, HTTP.UTF_8));        HttpGet httpGet = new HttpGet(url + "?" + getParams);                    HttpResponse httpResponse = httpClient.execute(httpGet);        HttpEntity entity = httpResponse.getEntity();        if (entity != null) {            Charset respCharset = ContentType.getOrDefault(entity).getCharset();            String respData = EntityUtils.toString(entity, respCharset);                        //此处还可以根据状态判断返回值，略            renderText(respData);        } else {            renderText("entity is null");        }                }catch (Exception e) {        e.printStackTrace();        renderText("error" + e.toString());                } finally {        if (httpClient != null){            httpClient.getConnectionManager().shutdown();        }    }}

二、Post

示例代码
public static void test_httpClient_post(){
HttpClient httpClient = null;
try {
String url = “http://localhost:8080/“;
httpClient = new DefaultHttpClient();

        //连接超时设置，单位毫秒        httpClient.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000);        //读取超时， 单位毫秒        httpClient.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 60000);        String param1 = "post_param1";        String param2 = "post_param2";        List<NameValuePair> list = new ArrayList<NameValuePair>();        list.add(new BasicNameValuePair("param1", param1));        list.add(new BasicNameValuePair("param2", param2));        HttpPost httpPost = new HttpPost(url);        //如果不带参数，以下可略        HttpEntity paramEntity = new UrlEncodedFormEntity(list, "UTF-8");        httpPost.setEntity(paramEntity);        //执行        HttpResponse httpResponse = httpClient.execute(httpPost);        HttpEntity entity = httpResponse.getEntity();        if (entity != null) {            //状态，该状态可用于判断，此处略            System.out.println("resp_status:" + httpResponse.getStatusLine().getStatusCode());            Charset respCharset = ContentType.getOrDefault(entity).getCharset();            String respData = EntityUtils.toString(entity, respCharset);                        renderText("status:" + httpResponse.getStatusLine().getStatusCode() + "\r\n" + respData);        } else {            renderText("entity is null");        }                }catch (Exception e) {        e.printStackTrace();        renderText("error" + e.toString());    } finally {        if (httpClient != null){            httpClient.getConnectionManager().shutdown();        }    }}

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