java调用天气预报api怎么写

//通过中国天气api调用

private String getWeatherInfo2(){

StringBuilder info = new StringBuilder()

try {

DefaultHttpClient httpclient = new DefaultHttpClient()

HttpGet httget = new HttpGet("http://m.weather.com.cn/data/101050101.html")

ResponseHandler<String>responseHandler = new BasicResponseHandler()

String responseBody = httpclient.execute(httget, responseHandler)

System.out.println(responseBody)

JsonParser jp = new JsonParser()

JsonElement jse = jp.parse(responseBody)

JsonObject jso = jse.getAsJsonObject().get("weatherinfo").getAsJsonObject()

// String updTime = jso.get("fchh").getAsString()

// if(updTime != null){

// //温度

// String j = jso.get("temp1").getAsString()//今天

// String m = jso.get("temp2").getAsString()//明天

// //天气情况

// String j_weather = jso.get("weather1").getAsString()//今天

// String m_weather = jso.get("weather2").getAsString()//明天

// //风向风力

// String j_wind = jso.get("wind1").getAsString()//今天

// String m_wind = jso.get("wind2").getAsString()//明天

// info.append("今天：").append(j).append(" ").append(j_weather).append(" ").append(j_wind).append("\n")

// info.append("明天：").append(m).append(" ").append(m_weather).append(" ").append(m_wind).append("\n")

// }

String updTime = jso.get("fchh").getAsString()

if(updTime != null){

if(!updTime.trim().equals("18")){

//温度

String j = jso.get("temp1").getAsString()//今天

String m = jso.get("temp2").getAsString()//明天

//天气情况

String j_weather = jso.get("weather1").getAsString()//今天

String m_weather = jso.get("weather2").getAsString()//明天

//风向风力

String j_wind = jso.get("wind1").getAsString()//今天

String m_wind = jso.get("wind2").getAsString()//明天

info.append("今天：").append(j).append(" ").append(j_weather).append(" ").append(j_wind).append("\n")

info.append("明天：").append(m).append(" ").append(m_weather).append(" ").append(m_wind).append("\n")

}else{

//18

//温度

String temp1 = jso.get("temp1").getAsString()//今天

String temp2 = jso.get("temp2").getAsString()//今天

String temp3 = jso.get("temp3").getAsString()//今天

String j = temp1.split("~")[1] + "~" + temp2.split("~")[0]

String m = temp2.split("~")[1] + "~" + temp3.split("~")[0]//明天

//天气情况

String weather1 = jso.get("weather1").getAsString()

String weather2 = jso.get("weather2").getAsString()

String weather3 = jso.get("weather3").getAsString()

String j_weather = ""

String j_weather_part1 = ""

String j_weather_part2 = ""

//判断是否有转

if(weather1.indexOf("转") >0){

//有

j_weather_part1 = weather1.split("转")[1]

}else{

j_weather_part1 = weather1

}

if(weather2.indexOf("转") >0){

//有

j_weather_part2 = weather2.split("转")[0]

}else{

j_weather_part2 = weather2

}

if(j_weather_part1.equalsIgnoreCase(j_weather_part2)){

j_weather = j_weather_part1//今天

}else{

j_weather = j_weather_part1 + "转" + j_weather_part2//今天

}

String m_weather = ""

String m_weather_part1 = ""

String m_weather_part2 = ""

//判断是否有转

if(weather2.indexOf("转") >0){

//有

m_weather_part1 = weather2.split("转")[1]

}else{

m_weather_part1 = weather2

}

if(weather3.indexOf("转") >0){

//有

m_weather_part2 = weather3.split("转")[0]

}else{

m_weather_part2 = weather3

}

if(m_weather_part1.equalsIgnoreCase(m_weather_part2)){

m_weather = m_weather_part1//今天

}else{

m_weather = m_weather_part1 + "转" + m_weather_part2//明天

}

//风向风力

String j_wind = jso.get("wind2").getAsString()//今天

String m_wind = jso.get("wind3").getAsString()//明天

info.append("今天：").append(j).append(" ").append(j_weather).append(" ").append(j_wind).append("\n")

info.append("明天：").append(m).append(" ").append(m_weather).append(" ").append(m_wind).append("\n")

}

}

} catch (Exception e) {

}

return info.toString()

}

①取出地址中的返回值（getWeatherReader方法）

②解析json格式的字符串

③形成你要展示的天气预报效果

public static String getWeatherReader() {//取得接口字符串

String currentLine = ""

String strReturn = ""

URL url = null

HttpURLConnection conn = null

InputStream in = null

BufferedReader buff = null

try {

url = new URL("http://www.weather.com.cn/data/sk/101010100.html")

System.out.println(url.toURI())

//打开地址链接

conn = (HttpURLConnection)url.openConnection()

conn.connect()

//接收数据

in = conn.getInputStream()

//如有乱码注意编码方式，如：UTF-8

buff = new BufferedReader(new InputStreamReader(in, "gb2312"))

while((currentLine = buff.readLine()) != null) {

strReturn += currentLine

}

} catch (Exception e) {

e.printStackTrace()

} finally {

try {

in.close()

buff.close()

} catch (IOException e) {

return "8EF0000"

}

}

return strReturn

}

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