java调用天气预报api怎么写

//通过中国天气api调用

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private String getWeatherInfo2(){

StringBuilder info = new StringBuilder();

try {

DefaultHttpClient httpclient = new DefaultHttpClient();

HttpGet httget = new HttpGet("");

ResponseHandlerString 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();

}

开发个java servlet 接口，主要是处理用户查询天气预报的请求，返回相应的结果。

简单的方法，可以直接在servlet的doGet或doPost里面构建这个xml，然后写回响应就可以了。

需要搭建java应用服务器如tomcat服务器，运行这个servlet就可以。

xml的构建对于Java来说工具很多，JDOM, Dom4J等。

如果客户端要求用web service方式提供，就考虑Apache CXF这些Java Web服务框架，不过一般没必要的。

JAVA问题[天气]

import java.util.*;

public class Test {

public static void main(String[] args) {

Scanner input=new Scanner(System.in);

String weather="";

String answer="";

do

{

System.out.println("请输入第一个字母(d,m,h,r)");

//接收输入的天气

weather=input.next();

//根据输入判断

if(weather.equalsIgnoreCase("d"))

{

System.out.println("干燥");

}

if(weather.equalsIgnoreCase("m"))

{

System.out.println("潮湿");

}

if(weather.equalsIgnoreCase("h"))

{

System.out.println("炎热");

}

if(weather.equalsIgnoreCase("r"))

{

System.out.println("下雨");

}

else

{

System.out.println("输入错误");

}

System.out.println("是否继续输入？");

//接收是否输入为n

answer=input.next();

}while(!answer.equalsIgnoreCase("n"));

}

}

此处equalsIgnoreCase是不区分大小写的意思

如果要区分，则把他改成equals即可

求Android天气预报的开发源代码

package com.nrzc.weatherstation;

import android.content.Context;

import android.hardware.Sensor;

import android.hardware.SensorEvent;

import android.hardware.SensorEventListener;

import android.hardware.SensorManager;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.widget.TextView;

import java.util.Timer;

import java.util.TimerTask;

/**

* 环境传感器

* 气象站

*/

public class MainActivity extends AppCompatActivity {

private SensorManager sensorManager;

private TextView temperatureTextView;

private TextView pressureTextView;

private TextView lightTextView;

private float currentTemperature=Float.NaN;

private float currentPressure=Float.NaN;

private float currentLight=Float.NaN;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

init();

Timer updateTimer=new Timer("weatherUpdate");

updateTimer.scheduleAtFixedRate(new TimerTask() {

@Override

public void run() {

updateGUI();

}

},0,1000);

}

private void init(){

temperatureTextView=(TextView)findViewById(R.id.temperature);

pressureTextView=(TextView)findViewById(R.id.pressure);

lightTextView=(TextView)findViewById(R.id.light);

sensorManager=(SensorManager)getSystemService(Context.SENSOR_SERVICE);

}

private final SensorEventListener tempSensorEventListener=new SensorEventListener() {

@Override

public void onSensorChanged(SensorEvent event) {

currentTemperature=event.values[0];

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

};

private final SensorEventListener pressureSensorEventListener=new SensorEventListener() {

@Override

public void onSensorChanged(SensorEvent event) {

currentPressure=event.values[0];

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

};

private final SensorEventListener lightSensorEventListener=new SensorEventListener() {

@Override

public void onSensorChanged(SensorEvent event) {

currentLight=event.values[0];

}

@Override

public void onAccuracyChanged(Sensor sensor, int accuracy) {

}

};

@Override

protected void onResume() {

super.onResume();

Sensor lightSensor=sensorManager.getDefaultSensor(Sensor.TYPE_LIGHT);

if (lightSensor!=null)

sensorManager.registerListener(lightSensorEventListener,

lightSensor,

SensorManager.SENSOR_DELAY_NORMAL);

else

lightTextView.setText("Light Sensor Unavailable");

Sensor pressureSensor=sensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE);

if (pressureSensor!=null)

sensorManager.registerListener(pressureSensorEventListener,

pressureSensor,SensorManager.SENSOR_DELAY_NORMAL);

else

pressureTextView.setText("Barometer Unavailable");

Sensor temperatureSensor=sensorManager.getDefaultSensor(Sensor.TYPE_AMBIENT_TEMPERATURE);

if (temperatureSensor!=null)

sensorManager.registerListener(tempSensorEventListener,

temperatureSensor,

SensorManager.SENSOR_DELAY_NORMAL);

else

temperatureTextView.setText("Thermometer Unavailable");

}

@Override

protected void onPause() {

sensorManager.unregisterListener(pressureSensorEventListener);

sensorManager.unregisterListener(tempSensorEventListener);

sensorManager.unregisterListener(lightSensorEventListener);

super.onPause();

}

private void updateGUI(){

runOnUiThread(new Runnable() {

@Override

public void run() {

if(!Float.isNaN(currentPressure)){

pressureTextView.setText(currentPressure+"hPa");

pressureTextView.invalidate();

}

if (!Float.isNaN(currentLight)){

String lightStr="Sunny";

if (currentLight=SensorManager.LIGHT_CLOUDY)

lightStr="night";

else if (currentLight=SensorManager.LIGHT_OVERCAST)

lightStr="Cloudy";

else if (currentLight=SensorManager.LIGHT_SUNLIGHT)

lightStr="Overcast";

lightTextView.setText(lightStr);

lightTextView.invalidate();

}

if (!Float.isNaN(currentTemperature)){

temperatureTextView.setText(currentTemperature+"C");

temperatureTextView.invalidate();

}

}

});

}

}

java调天气预报

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("");

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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