最近一直想著封裝個網路請求框架,但是看到有很多部落格有封裝而且還不錯,於是就想著封裝一個安卓帶的,以便自己以後使用.
一,請求成功和失敗回撥介面

public interface OnResponseListner {
    void onSucess(String response);
    void onError(String error);
}

二,post&get請求方法工具類

public class HttpUtlis {
    /**
     *get請求封裝
     */
    public static void getRequest(String url, Map<String,String> params, String encode,OnResponseListner listner) {
        StringBuffer sb = new
 
 StringBuffer(url);
        sb.append("?");
        if (params!=null && !params.isEmpty()){
            for (Map.Entry<String,String> entry:params.entrySet()) {    //增強for遍歷迴圈新增拼接請求內容
                sb.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
            }
            sb.deleteCharAt(sb.length()-1
 
);
            if (listner!=null) {
                try {
                    URL path = new URL(sb.toString());
                    if (path!=null) {
                        HttpURLConnection con = (HttpURLConnection) path.openConnection();
                        con.setRequestMethod("GET");    //設定請求方式
 

                        con.setConnectTimeout(3000);    //連結超時3秒
                        con.setDoOutput(true);
                        con.setDoInput(true);
                        OutputStream os = con.getOutputStream();
                        os.write(sb.toString().getBytes(encode));
                        os.close();
                        if (con.getResponseCode() == 200) {    //應答碼200表示請求成功
                            onSucessResopond(encode, listner, con);
                        }
                    }
                } catch (Exception error) {
                    error.printStackTrace();
                    onError(listner, error);
                }
            }
        }
    }

    /**
     * POST請求
     */
    public static void postRequest(String url,Map<String,String> params,String encode,OnResponseListner listner){
        StringBuffer sb = new StringBuffer();
        if (params!=null && !params.isEmpty()){
            for (Map.Entry<String,String> entry: params.entrySet()) {
                sb.append(entry.getKey()).append("=").append(entry.getValue()).append("&");
            }
                sb.deleteCharAt(sb.length()-1);
        }
        if (listner!=null) {
            try {
                URL path = new URL(url);
                if (path!=null){
                    HttpURLConnection con = (HttpURLConnection) path.openConnection();
                    con.setRequestMethod("POST");   //設定請求方法POST
                    con.setConnectTimeout(3000);
                    con.setDoOutput(true);
                    con.setDoInput(true);
                    byte[] bytes = sb.toString().getBytes();
                    OutputStream outputStream = con.getOutputStream();
                    outputStream.write(bytes);
                    outputStream.close();
                    if (con.getResponseCode()==200){
                        onSucessResopond(encode, listner,  con);
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
                onError(listner, e);
            }
        }
    }

    private static void onError(OnResponseListner listner,Exception onError) {
        listner.onError(onError.toString());
    }

    private static void onSucessResopond(String encode, OnResponseListner listner, HttpURLConnection con) throws IOException {
        InputStream inputStream = con.getInputStream();
        ByteArrayOutputStream baos = new ByteArrayOutputStream();//建立記憶體輸出流
        int len = 0;
        byte[] bytes = new byte[1024];
        if (inputStream != null) {
            while ((len = inputStream.read(bytes)) != -1) {
                baos.write(bytes, 0, len);
            }
            String str = new String(baos.toByteArray(), encode);
            listner.onSucess(str);
        }
    }

}

三,activity中使用直接類名靜態方法呼叫

   String url="";
    String encode="utf-8";
    public void GET(View view){
        Map<String,String> map=new HashMap<>();
        map.put("userName","");
        map.put("pwd","");
        HttpUtlis.getRequest(url, map,encode, new OnResponseListner() {
            @Override
            public void onSucess(String response) {

            }

            @Override
            public void onError(String error) {

            }
        });
    }