Http请求小结

1、Http请求:get方式

public void httpGet(String url,Map<String,Object> map) {
    try {
        String joint = parseMap(map);
        if(!TextUtils.isEmpty(url)) {
            url = url+"?"+joint;
        }
        URL newUrl = new URL(url);//创建URL
        //打开网络连接
        HttpURLConnection conn = (HttpURLConnection)newUrl.openConnection();
        conn.setRequestMethod("GET");//设置请求方式
        InputStream is = conn.getInputStream();//获取输入流（读取流）
        BufferReader reader = new BufferReader(new InputStreamReader(is));
        StringBuffer buffer = new StringBuffer();
        if(2000 == conn.getResponseCode()) {//判断响应状态
            String msg = null;
            while(null != (msg = reader.readLine())) {//读取返回数据
                buffer.append(msg);
            }
        }
        Log.d("result",buffer.toString());
        is.close();//关闭输入流
        conn.disconnect();//关闭网络连接
    } catch(MalformedURLException e) {
        e.printStackTrace();
    } catch(IOException e) {
        e.printStackTrace();
    }
}

解析传入参数：

public String parseMap(Map<String,Object> map) {
    String result = "";
    try {
        if(null == map) {
            return result;
        }
        for(String key : map.keySet()) {
            result = result + key + "=" + URLEncoder.encode(map.get(key).toString(),"UTF-8")+"&";
        }
        if(!TextUtils.isEmpty(result)) {
            result = result.substring(0,result.length() - 1);
        }
    } catch(UnsupportedEncodingException e) {
        e.printStackTrace();
    }
    return result;
}

2、Http请求 ：post方式

　　关于Content-Type类型特别说明，相关连接http://blog.csdn.net/blueheart20/article/details/45174399

public void httpPost(String url,String jsonObject) {
    URL newUrl = null;
    try {
        if(null == url) {
            return;
        }
        newUrl = new URL(url);
        HttpURLConnection conn = (HttpURLConnection)newUrl.openConnection();
        conn.setRequestMethod("POST");//设置请求方式
        conn.setInput(true);//设置允许输入
        conn.setOutput(true);//设置允许输出
        conn.setConnectTimeout(30000);//设置连接主机超时（单位：毫秒）
        conn.setReadTimeout(30000);//设置从主机读取数据超时（单位：毫秒）
        conn.setRequestProperty("Content-Type","application/json");//设置请求头体格式
        conn.setRequestProperty("Charset","UTF-8");//设置请求体编码
        conn.setRequestProperty("Content-Length",String.valueOf(jsonObject.getBytes().length));//设置请求体长度
        OutputStream os = conn.getOutputStream();//获取输出流（写入流）
        os.write(jsonObject.getBytes());//输出数据
        os.flush();
        InputStream is = conn.getInputStream();
        BufferReader reader = new BufferReader(new InputStreamReader(is));
        StringBuffer buffer = new StringBuffer();
        String msg = null;
        while(null != (msg = reader.readLine())) {
            buffer.append(msg);
        }
        Log.d("result",buffer.toString());
        is.close();
        conn.disconnect();
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
}