如何做一个api接口?
421
2023-02-03
本文目录一览:
百度API Key申请地址:http://lbsyun.baidu.com/apiconsole/key
创建应用 如图:
提交后得到API Key 如图:
接口实例:http://api.map.baidu.com/telematics/v3/weather?location=南昌output=jsonak=新浪天气接口api接口你的API Keymcode=新浪天气接口api接口你的数字签名SHA1;com.example.administrator.jsontest(包名)
接口参数说明
参数类型
参数名称
是否必须
具体描述
String location true 输入城市名或经纬度,城市名如北京或者131,经纬度格式为lng,lat坐标,如:location=116.305145,39.982368;全国值为all,返回省会城市自治区,港澳台天气情况多城市天气预报中间用“|”分隔,如:location=116.305145,39.982368|123.342323,36238945|...
String output false 输出的数据格式,默认为xml格式,当output设置为json时,输出的为json数据格式
String coord_type false 请求参数坐标类型,默认为gcj02经纬度坐标。允许的值为bd09ll、bd09mc、gcj02、wgs84;
返回的JSON数据
{
"error":0,
"status":"success",
"date":"2016-03-05",
"results":[
{
"currentCity":"北京",
"pm25":"144",
"index":[
{
"title":"穿衣",
"zs":"较冷",
"tipt":"穿衣指数",
"des":"建议着厚外套加毛衣等服装。年老体弱者宜着大衣、呢外套加羊毛衫。"},
{
"title":"洗车",
"zs":"不宜",
"tipt":"洗车指数",
"des":"不宜洗车,未来24小时内有扬沙或浮尘,如果在此期间洗车,极易很快蒙上新的灰尘。"},
{
"title":"旅游",
"zs":"一般",
"tipt":"旅游指数",
"des":"风稍大,扬沙或浮尘天气对能见度和空气质量都会有些影响,出行请注意交通安全和采取适当的防尘措施。"},
{
"title":"感冒",
"zs":"易发",
"tipt":"感冒指数",
"des":"昼夜温差大,风力较强,易发生感冒,请注意适当增减衣服,加强自我防护避免感冒。"},
{
"title":"运动",
"zs":"较不宜",
"tipt":"运动指数",
"des":"有扬沙或浮尘,建议适当停止户外运动,选择在室内进行运动,以避免吸入更多沙尘,有损健康。"},
{
"title":"紫外线强度",
"zs":"最弱",
"tipt":"紫外线强度指数",
"des":"属弱紫外线辐射天气,无需特别防护。若长期在户外,建议涂擦SPF在8-12之间的防晒护肤品。"}
],
"weather_data":[
{
"date":"周六 03月05日 (实时:12℃)", "dayPictureUrl":"http://api.map.baidu.com/images/weather/day/fuchen.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/qing.png",
"weather":"浮尘转晴",
"wind":"北风4-5级",
"temperature":"12 ~ -1℃"},
{
"date":"周日",
"dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png",
"weather":"多云",
"wind":"微风",
"temperature":"10 ~ -3℃"},
{
"date":"周一", "dayPictureUrl":"http://api.map.baidu.com/images/weather/day/duoyun.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/yin.png",
"weather":"多云转阴",
"wind":"微风",
"temperature":"13 ~ 2℃"},
{
"date":"周二", "dayPictureUrl":"http://api.map.baidu.com/images/weather/day/yin.png",
"nightPictureUrl":"http://api.map.baidu.com/images/weather/night/duoyun.png",
"weather":"阴转多云",
"wind":"北风3-4级",
"temperature":"6 ~ -1℃"}
]}]}
3. 我们来写个demo,代码如下:
package com.example.administrator.jsontest;
public class MainActivity extends Activity {
private Button button;
private TextView textView;
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case 0:
String re = (String) msg.obj;
textView.setText(re);
break;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.button);
textView = (TextView) findViewById(R.id.textView);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.i("TAG", "点击了Button");
sendRequestWithHttpClient();
}
});
}
private void sendRequestWithHttpClient() {
new Thread(new Runnable() {
@Override
public void run() {
HttpURLConnection connection = null;
try {
URL url = new URL("http://api.map.baidu.com/telematics/v3/weather?location=南昌output=jsonak=8ixCCFzlBB617YX7tONI2P5Bmcode=1C:6B:42:33:E8:A6:DC:A2:11:6E:26:EC:84:BD:42:E3:8E:6B:57:9A;com.example.administrator.jsontest");
connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(5000);
connection.setReadTimeout(5000);
InputStream in = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder response = new StringBuilder();
String line;
while ((line = reader.readLine()) != null) {
response.append(line);
}
Log.i("TAG", response.toString()); parseJSONObjectOrJSONArray(response.toString());
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
}
//解析JSON数据
private void parseJSONObjectOrJSONArray(String jsonData) {
try {
String count = "";
JSONObject jsonObject = new JSONObject(jsonData);
JSONArray jsonArray = jsonObject.getJSONArray("results");
if (jsonArray.length() 0) {
JSONObject object = jsonArray.getJSONObject(0);
String city = object.optString("currentCity");
JSONArray array = object.getJSONArray("weather_data");
for (int i = 0; i < array.length(); i++) {
JSONObject jsonObject1 = array.getJSONObject(i);
String dateDay = jsonObject1.optString("date");
String weather = jsonObject1.optString("weather");
String wind = jsonObject1.optString("wind");
String temperature = jsonObject1.optString("temperature");
count =count +"\n"+ dateDay + " " + weather + " " + wind + " " + temperature;
Log.i("AAA",count);
}
Message message = new Message();
message.what = 0;
message.obj = count;
handler.sendMessage(message);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
4. 运行结果如下:
最近在做微信公众平台测试时,想在里面子菜单上添加查询未来几天(包括今天)天气的功能,就查找了下好用的天气预报查询接口API,使用比较多的有:国家气象局天气接口、新浪天气预报接口、百度天气预报接口、google天气接口、Yahoo天气接口等等,我使用的是百度提供的免费天气查询接口API,下面与大家分享下...
1、查询方式:
百度提供的是根据纬度和城市名查询天气情况
2、接口事例:
3、接口参数说明:
4、返回结果说明:
5、
//城市名
$city = '上海';
//对json格式的字符串进行编码
$arr =json_decode($str,TRUE);
print_r($atr);
//城市名6、返回页面的是json编码后的数据:
[plain] view plain copy print?
<meta charset="UTF-8"
Array
(
[error] = 0
[status] = success
[date] = 2014-03-17
[results] = Array
(
[0] = Array
(
[currentCity]= 上海
[weather_data]= Array
(
[0]= Array
(
[date] = 周一(今天, 实时:19℃)
[dayPictureUrl] =http://api.map.baidu.com/images/weather/day/qing.png
[nightPictureUrl] =http://api.map.baidu.com/images/weather/night/qing.png
[weather] = 晴
[wind] = 西南风3-4级
[temperature] = 13℃
)
[1] = Array
(
[date]= 周二
[dayPictureUrl] =http://api.map.baidu.com/images/weather/day/duoyun.png
[nightPictureUrl] = http://api.map.baidu.com/images/weather/night/yin.png
[weather]= 多云转阴
[wind]= 东北风3-4级
[temperature] = 24 ~ 9℃
)
[2] = Array
(
[date]= 周三
[dayPictureUrl] =http://api.map.baidu.com/images/weather/day/zhongyu.png
[nightPictureUrl] = http://api.map.baidu.com/images/weather/night/xiaoyu.png
[weather]= 中雨转小雨
[wind]= 东北风3-4级
[temperature] = 15 ~ 8℃
)
[3] = Array
(
[date]= 周四
[dayPictureUrl] =http://api.map.baidu.com/images/weather/day/duoyun.png
[nightPictureUrl] =http://api.map.baidu.com/images/weather/night/qing.png
[weather]= 多云转晴
[wind]= 北风3-4级
[temperature] = 14 ~ 6℃
)
)
)
)
)
<meta charset="UTF-8"7、PHP中自带了处理json格式字符串的内置函数,下面做一个事例,并给出完整代码:
[php] view plain copy print?
<metacharset="UTF-8"
<?php
//城市名
$city = '上海';
//获取json格式的数据
$str = file_get_contents("http://api.map.baidu.com/telematics/v3/weather?location=".$city."output=jsonak=5slgyqGDENN7Sy7pw29IUvrZ");
//对json格式的字符串进行编码
$arr = json_decode($str,TRUE);
echo "城市:".$arr['results'][0]['currentCity']." 日期:".$arr['date']."<br /<br /";
foreach($arr['results'][0]['weather_data']as $val)
{
echo $val['date']."<br/";
echo "天气:{$val['weather']}<br/";
echo "风向:{$val['wind']}<br/";
echo "温度:{$val['temperature']}<br/<br /";
}
?
<metacharset="UTF-8"8、返回的内容如下:
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