Android笔记之使用Apache提交数据(用户登陆为例)

1、主代码login：

（1）传递Map参数能具有更好的复用性

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.protocol.HTTP;
import org.apache.http.util.EntityUtils;


public static String sendHttpclientGet(Map<String, String> map,
            String path, String encode) {
        // TODO Auto-generated method stub

        // 填充表单的内容
        List<NameValuePair> pairs = new ArrayList<NameValuePair>();
        // Key必须与action接收params的key一致
        if (map != null && !map.isEmpty()) {
            // 一个entry代表一个键值对，.getKey()获取键，getValue()获取值
            for (Map.Entry<String, String> entry : map.entrySet()) {
                // 相当于pairs.add(new
                // BasicNameValuePair("stuid","1109030115"));
                pairs.add(new BasicNameValuePair(entry.getKey(), entry
                        .getValue()));

            }
        }
        try {
            // 添加form表单的内容，和网页的jsp一样
            UrlEncodedFormEntity entity = new UrlEncodedFormEntity(pairs,
                    encode);
            // 使用post提交数据
            HttpPost httpPost = new HttpPost(path);
            httpPost.setEntity(entity);
            HttpClient client = new DefaultHttpClient();
            // HttpResponse获得服务器响应的所有消息
            HttpResponse response = client.execute(httpPost);
            // 判断连接成功
            if (response.getStatusLine().getStatusCode() == 200) {
                // HttpEntity获得服务器响应回来的消息体(不包括HTTP HEAD)
                HttpEntity httpEntity = response.getEntity();
                // 自动分辨响应的内容的编码
                String defaultCharset = EntityUtils
                        .getContentCharSet(httpEntity);
                // EntityUtils.toString将获得的消息体转换成String
                return EntityUtils.toString(httpEntity, defaultCharset);
            } else {
                //
            }
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;

    }

Done！