[Android] Json格式解析和文字图片传输

json串拼写 key=关键字 value=值  例：登陆串

 

userString = "[e-mail]";
password = "111111";
JSONStringer userInfo = new JSONStringer().object()
					.key("email").value(userString)
                                        .key("password").value(password).endObject();

JSONStringer json = new JSONStringer().object().key("request").value(userInfo).endObject();

 拼写完成的格式是：

 

{
    request => {
                          :email => "[e-mail]",
                          :password => "111111"
                      }
}

 

发送json格式请求方法

 

public static JSONObject getJsonRequest(String url, Object json) {

		HttpPost request = new HttpPost(url);
		String retSrc = null;
		JSONObject result = null;
		try {
			StringEntity se = new StringEntity(json.toString(), HTTP.UTF_8);
                        //设置类型 编码
			se.setContentType("application/json;charset=UTF-8");
			se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE,
					"application/json;charset=UTF-8"));
			request.setEntity(se);
			// 发送请求
			HttpResponse httpResponse = new DefaultHttpClient()
					.execute(request);
			// 得到应答的字符串
			retSrc = EntityUtils.toString(httpResponse.getEntity());
			// 生成 JSON 对象
			result = new JSONObject(retSrc);
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;//返回json对象
	}

 

得到返回json对象并且解析

userRequest = getJsonRequest(Const.URL
					+ "/sign_in.json", json);

int status=userRequest.getInt("status");//获取返回状态数字
JSONObject user = userRequest.getJSONObject("user");
int userId = user.getInt("id");//解析int格式
String nickName = user.getString("nickname");//解析string格式

 返回格式是：

 

{
     :status => 200,

     :user => {

                         :id => 8,
                         :nickname => "逐风林羽",
                    }

}

还有数据类型：

JSONArray users = data.getJSONArray("users");

for (int i = 0; i < users.length(); i++) {

JSONObject user = users.getJSONObject(i);

//然后再向上个例子一样解析user串

}

 

传输bitmap图片

public static JSONObject UpLoadRes(String url,String param,File bitmap ){
		String retSrc = null;
		JSONObject result = null;		  
		//设置要访问的地址
        HttpPost httpRequestHttpPost = new HttpPost(url);
		 MultipartEntity multipartEntity = new MultipartEntity(
				 HttpMultipartMode.BROWSER_COMPATIBLE, null, Charset.forName(HTTP.UTF_8));
	        ContentBody contentBody = new FileBody(bitmap, "image/jpg");	       
	         try {
	 	        String newStr = new String(param.getBytes(), "UTF-8");
	 	        //添加内容
	 	        multipartEntity.addPart("email",new StringBody("[e-mail]"));
	 	        multipartEntity.addPart("request",new StringBody(newStr, Charset.forName(HTTP.UTF_8)));
	 	    	  multipartEntity.addPart("res", contentBody);
	 	        //把要传输的内容放到请求里面
	 	        httpRequestHttpPost.setEntity(multipartEntity);
	 	        //创建客户端对象
	 	        HttpClient  httpClient = new DefaultHttpClient();
	 	        //执行请求并得到返回结果
				HttpResponse httpResponse = httpClient.execute(httpRequestHttpPost);
				retSrc = EntityUtils.toString(httpResponse.getEntity());
				// 生成 JSON 对象
				result = new JSONObject(retSrc);
			} catch (ClientProtocolException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		return result;
	}