springboot实战——搭建天气查询网站
天气查询的api：https://www.sojson.com/open/api/weather/json.shtml?city=北京，返回json数据
格式如下：
{
"date": "20180428",
"message": "Success !",
"status": 200,
"city": "北京",
"count": 1043,
"data": {
"shidu": "45%",
"pm25": 39,
"pm10": 161,
"quality": "轻度污染",
"wendu": "18",
"ganmao": "儿童、老年人及心脏、呼吸系统疾病患者人群应减少长时间或高强度户外锻炼",
"yesterday": {
"date": "27日星期五",
"sunrise": "05:22",
"high": "高温 27.0℃",
"low": "低温 13.0℃",
"sunset": "19:04",
"aqi": 111,
"fx": "南风",
"fl": "3-4级",
"type": "晴",
"notice": "愿你拥有比阳光明媚的心情"
},
"forecast": [
{
"date": "28日星期六",
"sunrise": "05:21",
"high": "高温 27.0℃",
"low": "低温 17.0℃",
"sunset": "19:05",
"aqi": 102,
"fx": "西南风",
"fl": "3-4级",
"type": "晴",
"notice": "愿你拥有比阳光明媚的心情"
},
{
"date": "29日星期日",
"sunrise": "05:19",
"high": "高温 29.0℃",
"low": "低温 17.0℃",
"sunset": "19:06",
"aqi": 97,
"fx": "南风",
"fl": "<3级",
"type": "多云",
"notice": "阴晴之间，谨防紫外线侵扰"
},
{
"date": "30日星期一",
"sunrise": "05:18",
"high": "高温 23.0℃",
"low": "低温 14.0℃",
"sunset": "19:07",
"aqi": 61,
"fx": "东南风",
"fl": "<3级",
"type": "多云",
"notice": "阴晴之间，谨防紫外线侵扰"
},
{
"date": "01日星期二",
"sunrise": "05:17",
"high": "高温 23.0℃",
"low": "低温 14.0℃",
"sunset": "19:08",
"aqi": 52,
"fx": "北风",
"fl": "4-5级",
"type": "阴",
"notice": "不要被阴云遮挡住好心情"
},
{
"date": "02日星期三",
"sunrise": "05:16",
"high": "高温 23.0℃",
"low": "低温 12.0℃",
"sunset": "19:09",
"aqi": 49,
"fx": "东北风",
"fl": "3-4级",
"type": "多云",
"notice": "阴晴之间，谨防紫外线侵扰"
}
]
}
}项目结构如下：
todayweather（保存今日天气情况）
package com.example.demo;
/*
* 用于表示本天天气
*/
public class todayweather {
private String shidu;
private String pm25;
private String pm10;
private String quality;
private String wendu;
private String ganmao;
public String getShidu() {
return shidu;
}
public void setShidu(String shidu) {
this.shidu = shidu;
}
public String getPm25() {
return pm25;
}
public void setPm25(String pm25) {
this.pm25 = pm25;
}
public String getPm10() {
return pm10;
}
public void setPm10(String pm10) {
this.pm10 = pm10;
}
public String getQuality() {
return quality;
}
public void setQuality(String quality) {
this.quality = quality;
}
public String getWendu() {
return wendu;
}
public void setWendu(String wendu) {
this.wendu = wendu;
}
public String getGanmao() {
return ganmao;
}
public void setGanmao(String ganmao) {
this.ganmao = ganmao;
}
}
weather（保存昨天与明后几天的天气状况）
package com.example.demo;
/*
* 用于表示weather中的json格式
*/
public class Weather {
String date;
String sunrise;
String high;
String low;
String sunset;
String aqi;
String fx;
String fl;
String type;
String notice;
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getSunrise() {
return sunrise;
}
public void setSunrise(String sunrise) {
this.sunrise = sunrise;
}
public String getHigh() {
return high;
}
public void setHigh(String high) {
this.high = high;
}
public String getLow() {
return low;
}
public void setLow(String low) {
this.low = low;
}
public String getSunset() {
return sunset;
}
public void setSunset(String sunset) {
this.sunset = sunset;
}
public String getAqi() {
return aqi;
}
public void setAqi(String aqi) {
this.aqi = aqi;
}
public String getFx() {
return fx;
}
public void setFx(String fx) {
this.fx = fx;
}
public String getFl() {
return fl;
}
public void setFl(String fl) {
this.fl = fl;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getNotice() {
return notice;
}
public void setNotice(String notice) {
this.notice = notice;
}
}returnweather（用于返回保存天气信息的对象）
package com.example.demo;
import java.io.IOException;
import java.util.Vector;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
/*
* 用于返回今天和昨天以及未来的天气状况
*/
@Service
public class returnweather {
//用于解析JSON数据
private JsonNode json=null;
private final String uri="https://www.sojson.com/open/api/weather/json.shtml?city=";
private boolean getjsondata(String city) {
RestTemplate rest=new RestTemplate();
ResponseEntity response=rest.getForEntity(uri+city,String.class);//发送请求获取JSON信息
if(response.getStatusCodeValue()==200) {
String strbody=response.getBody();
ObjectMapper mapper=new ObjectMapper();
try {
json=mapper.readTree(strbody);
return true;
} catch (IOException e) {
// TODO Auto-generated catch block
System.out.print("json初始化失败");
e.printStackTrace();
}
}
return false;
}
public todayweather gettodayweather(String city) {
if(json==null) {
boolean judge = getjsondata(city);
if(judge==false) return null;
}
todayweather result=new todayweather();
try {
JsonNode data=json.get("data");
result.setShidu(data.get("shidu").toString());
result.setGanmao(data.get("ganmao").toString());
result.setPm10(data.get("pm10").toString());
result.setPm25(data.get("pm25").toString());
result.setQuality(data.get("quality").toString());
result.setWendu(data.get("wendu").toString());
}catch(Exception e) {
System.out.print("获取当天天气状况失败");
e.printStackTrace();
return null;
}
return result;
}
private Weather returnwth(JsonNode deal) throws Exception{
Weather result=new Weather();
result.setAqi(deal.get("aqi").toString());
result.setDate(deal.get("date").toString());
result.setFl(deal.get("fl").toString());
result.setFx(deal.get("fx").toString());
result.setHigh(deal.get("high").toString());
result.setLow(deal.get("low").toString());
result.setNotice(deal.get("notice").toString());
result.setSunrise(deal.get("sunrise").toString());
result.setSunset(deal.get("sunset").toString());
result.setType(deal.get("type").toString());
return result;
}
public Vector getweatherList(String city){
if(json==null) {
boolean judge = getjsondata(city);
if(judge==false) return null;
}
Vector result=new Vector();
try {
JsonNode yd=json.get("data").get("yesterday");
Weather yesterday=returnwth(yd);
Weather forecast;
result.add(yesterday);
JsonNode fc=json.get("data").get("forecast");
for(int i=0;i<5;i++) {
forecast=returnwth(fc.get(i));
result.add(forecast);
}
}catch(Exception e){
e.printStackTrace();
return null;
}
return result;
}
}
Weathercontroller（控制器）
package com.example.demo;
import java.util.Vector;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
//import org.springframework.web.bind.annotation.RestController;
@Controller
@RequestMapping("/weather")
public class Weathercontroller {
@Autowired
returnweather deal;
@RequestMapping(value="/{city}",method=RequestMethod.GET)
public String getWatherinfo(@PathVariable("city") String city,Model model) {
returnweather deal=new returnweather();
todayweather weathertd=deal.gettodayweather(city);
Vector weatherset=deal.getweatherList(city);
if(weathertd!=null)
{
model.addAttribute("todayweather",weathertd);
model.addAttribute("weather", weatherset);
}
else
{
System.out.print("设置error");
model.addAttribute("error", "查询次数过快或城市名称错误");
}
return "weather";
}
}
启动类
package com.example.demo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class WeatheReporter1Application
{
public static void main(String[] args) {
SpringApplication.run(WeatheReporter1Application.class, args);
}
}pom.xml（添加了jsp依赖以及打包成jar所需要的信息）
4.0.0
com.example
WeatheReporter-1
0.0.1-SNAPSHOT
jar
WeatheReporter-1
Demo project for Spring Boot
org.springframework.boot
spring-boot-starter-parent
2.0.1.RELEASE
UTF-8
UTF-8
1.8
org.springframework.boot
spring-boot-starter-web
org.springframework.boot
spring-boot-starter-test
test
org.apache.tomcat.embed
tomcat-embed-jasper
org.eclipse.jdt.core.compiler
ecj
4.6.1
provided
weather
org.springframework.boot
spring-boot-maven-plugin
1.4.2.RELEASE
src/main/webapp
META-INF/resources
**/**
weather.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8" import="com.example.demo.todayweather,com.example.demo.Weather,java.util.Vector"%>
Insert title here
<%
todayweather today=(todayweather)request.getAttribute("todayweather");
String error=(String)request.getAttribute("error");
Vector weatherset=(Vector)request.getAttribute("weather");
%>
<%
if(today!=null){
out.print("今日天气
");
out.print("温度："+today.getWendu());
out.print("
");
out.print("湿度："+today.getShidu());
out.print("
");
out.print("温馨提示："+today.getGanmao());
out.print("
");
out.print("空气质量："+today.getQuality());
out.print("
");
out.print("Pm2.5："+today.getPm25());
out.print("
");
out.print("PM1.0："+today.getPm10());
out.print("
");
}
if(weatherset!=null){
int size=weatherset.size();
for(int i=0;i昨日天气");
else out.print("天气展望
");
out.print("时间："+weatherset.get(i).getDate()+"
");
out.print("日出："+weatherset.get(i).getSunrise()+"
");
out.print("最高气温："+weatherset.get(i).getSunrise()+"
");
out.print("最低气温："+weatherset.get(i).getSunset()+"
");
out.print("aqi："+weatherset.get(i).getAqi()+"
");
out.print("fx："+weatherset.get(i).getFx()+"
");
out.print("fl："+weatherset.get(i).getFl()+"
");
out.print("天气："+weatherset.get(i).getType()+"
");
out.print("温馨提示："+weatherset.get(i).getNotice()+"
");
}
}
if(error!=null){
out.print(error);
}
%>
springboot的默认模板引擎为thymeleaf，添加以下依赖，将模板引擎改为jsp，jsp文件路径：src\main\webapp\WEB-INF\views，在配置文件中添加路径：
spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsp在本机上运行即可，但是打包成jar文件时，要去掉这两句，因为jsp文件的路径发生了改变，springboot可以默认访问
springboot默认不支持jsp，所以在编译成jar文件时，不会编译jsp，在pom.xml中添加如下语句：
weather
org.springframework.boot
spring-boot-maven-plugin
1.4.2.RELEASE
src/main/webapp
META-INF/resources
**/**
注意指明maven的版本为1.4.2.RELEASE，否则jsp文件无法默认访问。
异常
sun.security.validator.ValidatorException:
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
打包好后，发送至服务器，执行时出现证书错误，被坑了很久，IE浏览器似乎无法对url中的中文自动编码成url格式，所以一直以为自己证书没有安装，安装后仍无法访问，此时发现了IE浏览器url中的巨坑，开始怀疑是JDK的问题，将自己电脑上的JDK打包发送到服务器安装，安装成功后发现可以访问。
该异常一般解决方案如下：
点击打开链接
部署项目到服务器的教程
点击打开链接