本章节将使用quartz来模拟实现天气数据的同步
1。首先要引入maven坐标：
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-quartz -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-quartz</artifactId>
</dependency>
2.配置类config
package com.csq.study.springboot.config;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class RestConfiguration {
@Autowired
private RestTemplateBuilder builder;
@Bean
public RestTemplate restTemplate() {
return builder.build();
}
}
3.创建一个同步数据的Job类
package com.csq.study.springboot.job;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;
import com.csq.study.springboot.service.CityDataService;
import com.csq.study.springboot.service.WeatherDataService;
import com.csq.study.springboot.vo.City;
@Component
public class ScheduledTasks {
private static final Logger logger = LoggerFactory.getLogger(ScheduledTasks.class);
private static final SimpleDateFormat formate = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
@Autowired
private CityDataService cityDataService;
@Autowired
private WeatherDataService watherDataService;
@Scheduled(fixedRate = 30000)
public void scheduledDemo(){
logger.info("天气数据同步任务 开始 every 5 seconds:{}", formate.format(new Date()) );
List<City> cityList=null;
try {
cityList=cityDataService.listCity();
} catch (Exception e) {
logger.info("获取异常",e);
}
for (City city : cityList) {
String cityId = city.getCityId();
logger.info("天气任务同步中,cityId:"+cityId);
//根据城市id获取天气
watherDataService.syncDataByCityId(cityId);
}
logger.info("天气任务同步End");
}
}
4.写一个工具类来完成xml转换到对象
package com.yian.springboot.util;
import java.io.Reader;
import java.io.StringReader;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
/**
* 将xml字符串转换成指定的pojo类
* @Description: TODO
* @ClassName: XmlBuilder
* @author chengshengqing-YiAn 2019年2月28日 下午2:42:32
* @see TODO
*/
public class XmlBuilder {
public static Object xmlStrToObject(Class<?> clazz,String xmlStr) throws Exception {
Object xmlObject = null;
Reader reader = null;
JAXBContext context = JAXBContext.newInstance(clazz);
//XML转为对象接口
Unmarshaller unmarshaller = context.createUnmarshaller();
reader = new StringReader(xmlStr);
xmlObject = unmarshaller.unmarshal(reader);
if (null != reader) {
reader.close();
}
return xmlObject;
}
5.controller类
package com.csq.study.springboot.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.csq.study.springboot.service.WeatherDataService;
import com.csq.study.springboot.vo.WeatherResponse;
@RestController
@RequestMapping("/weather")
public class WeatherController {
@Autowired
private WeatherDataService weatherDataService;
@GetMapping("/cityId/{cityId}")
public WeatherResponse getReportByCityId(@PathVariable("cityId") String cityId) {
return weatherDataService.getDataByCityId(cityId);
}
@GetMapping("/cityName/{cityName}")
public WeatherResponse getReportByCityName(@PathVariable("cityName") String cityName) {
return weatherDataService.getDataByCityName(cityName);
}
}
6.service接口以及实现类
package com.csq.study.springboot.service;
import java.util.List;
import com.csq.study.springboot.vo.City;
public interface CityDataService {
/**
*
* @Title: listCity
* @Description: 获取城市列表
* @return
* @throws Exception
*
*/
List<City> listCity() throws Exception;
}
实现类：
package com.csq.study.springboot.service;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.List;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.Resource;
import org.springframework.stereotype.Service;
import com.csq.study.springboot.util.XmlBuilder;
import com.csq.study.springboot.vo.City;
import com.csq.study.springboot.vo.CityList;
@Service
public class CityDataServiceImpl implements CityDataService{
@Override
public List<City> listCity() throws Exception {
//读取xml文件
Resource resource=new ClassPathResource("cityList.xml");
BufferedReader br=new BufferedReader(new InputStreamReader(resource.getInputStream(),"utf-8"));
StringBuffer buffer=new StringBuffer();
String line="";
while((line=br.readLine())!=null){
buffer.append(line);
}
br.close();
//xml转为Java对象
CityList cityList= (CityList) XmlBuilder.xmlStrToObject(CityList.class, buffer.toString());
return cityList.getCityList();
}
}
接口
package com.csq.study.springboot.service;
import com.csq.study.springboot.vo.WeatherResponse;
public interface WeatherDataService {
//根据城市ID查询天气数据
WeatherResponse getDataByCityId(String cityId);
//根据城市名称查询天气数据
WeatherResponse getDataByCityName(String cityName);
//根据城市ID同步天气数据
void syncDataByCityId(String cityId);
}
实现类
package com.csq.study.springboot.service;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;
import com.csq.study.springboot.vo.WeatherResponse;
import com.fasterxml.jackson.databind.ObjectMapper;
@Service
public class WeatherDataServiceImpl implements WeatherDataService {
private final static Logger logger=LoggerFactory.getLogger(WeatherDataServiceImpl.class);
private static final String WEATHER_API="http://wthrcdn.etouch.cn/weather_mini?";
private final Long TIME_OUT=1800L;
@Autowired
private RestTemplate restTemplate;
@Autowired
private StringRedisTemplate stringRedisTemplate;
public WeatherResponse getDataByCityId(String cityId) {
String uri=WEATHER_API + "citykey=" + cityId;
return this.doGetWeather(uri);
}
public WeatherResponse getDataByCityName(String cityName) {
String uri=WEATHER_API + "city=" + cityName;
return this.doGetWeather(uri);
}
@Override
public void syncDataByCityId(String cityId) {
String uri=WEATHER_API + "citykey=" + cityId;
this.doGetWeather(uri);
}
private WeatherResponse doGetWeather(String uri) {
ValueOperations<String, String> ops = this.stringRedisTemplate.opsForValue();
String key=uri;//将调用的URI作为key
String strBody=null;
ObjectMapper mapper=new ObjectMapper();
WeatherResponse weather=null;
//先查缓存，缓存没有在查服务
if(!this.stringRedisTemplate.hasKey(key)) {
logger.info("没有找到key");
ResponseEntity<String> response = restTemplate.getForEntity(uri, String.class);
if(response.getStatusCodeValue()==200) {
strBody=response.getBody();
}
ops.set(key, strBody, TIME_OUT, TimeUnit.SECONDS);
}else {
logger.info("找到key"+key+",value="+ops.get(key));
strBody=ops.get(key);
}
//用json反序列化成我们想要的数据
try {
/*
* strBody：要解析的参数内容，从respString获取
* WeatherResponse.class：要转成的对象类型
*/
weather=mapper.readValue(strBody,WeatherResponse.class);
}catch(IOException e) {
logger.error("Error!",e);
}
return weather;
}
}
7.vo类
package com.yian.springboot.vo;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name = "d")
@XmlAccessorType(XmlAccessType.FIELD)
public class City{
@XmlAttribute(name = "d1")
private String cityId;
@XmlAttribute(name = "d2")
private String cityName;
@XmlAttribute(name = "d3")
private String cityCode;
@XmlAttribute(name = "d4")
private String province;
public String getCityId() {
return cityId;
}
public void setCityId(String cityId) {
this.cityId = cityId;
}
public String getCityName() {
return cityName;
}
public void setCityName(String cityName) {
this.cityName = cityName;
}
public String getCityCode() {
return cityCode;
}
public void setCityCode(String cityCode) {
this.cityCode = cityCode;
}
public String getProvince() {
return province;
}
public void setProvince(String province) {
this.province = province;
}
@Override
public String toString() {
return "City [cityId=" + cityId + ", cityName=" + cityName + ", cityCode=" + cityCode + ", province="
+ province + "]";
}
}
cityList:
package com.yian.springboot.vo;
import javax.xml.bind.annotation.XmlAccessorType;
import java.util.List;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement(name = "c")
@XmlAccessorType(XmlAccessType.FIELD)
public class CityList {
@XmlElement(name = "d")
private List<City> cityList;
public List<City> getCityList() {
return cityList;
}
public void setCityList(List<City> cityList) {
this.cityList = cityList;
}
}
Forecast：
package com.csq.study.springboot.vo;
import java.io.Serializable;
public class Forecast implements Serializable{
/**
* @Fields serialVersionUID : TODO
*/
private static final long serialVersionUID = 1L;
private String date;//琪日期
private String high;//最高温度
private String fengxiang;//风向
private String low;//最低温度
private String fengli;//风力
private String type;//天气类型
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getHigh() {
return high;
}
public void setHigh(String high) {
this.high = high;
}
public String getFengxiang() {
return fengxiang;
}
public void setFengxiang(String fengxiang) {
this.fengxiang = fengxiang;
}
public String getLow() {
return low;
}
public void setLow(String low) {
this.low = low;
}
public String getFengli() {
return fengli;
}
public void setFengli(String fengli) {
this.fengli = fengli;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
}
Weather：
package com.csq.study.springboot.vo;
import java.io.Serializable;
import java.util.List;
public class Weather implements Serializable {
/**
* @Fields serialVersionUID : TODO
*/
private static final long serialVersionUID = 1L;
private String city;
private String aqi;//
private String wendu;
private String ganmao;
private Yesterday yesterday;
private List<Forecast> forecast;
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getAqi() {
return aqi;
}
public void setAqi(String aqi) {
this.aqi = aqi;
}
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;
}
public Yesterday getYesterday() {
return yesterday;
}
public void setYesterday(Yesterday yesterday) {
this.yesterday = yesterday;
}
public List<Forecast> getForecast() {
return forecast;
}
public void setForecast(List<Forecast> forecast) {
this.forecast = forecast;
}
}
WeatherResponse：
package com.csq.study.springboot.vo;
import java.io.Serializable;
public class WeatherResponse implements Serializable{
/**
* @Fields serialVersionUID : TODO
*/
private static final long serialVersionUID = 1L;
private Weather data; //消息数据
private String status; //消息状态
private String desc;//消息描述
public Weather getData() {
return data;
}
public void setData(Weather data) {
this.data = data;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
}
Yesterday：
package com.csq.study.springboot.vo;
import java.io.Serializable;
public class Yesterday implements Serializable{
/**
* @Fields serialVersionUID : TODO
*/
private static final long serialVersionUID = 1L;
private String date;
private String high;
private String fx;
private String low;
private String fl;
private String type;
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
public String getHigh() {
return high;
}
public void setHigh(String high) {
this.high = high;
}
public String getFx() {
return fx;
}
public void setFx(String fx) {
this.fx = fx;
}
public String getLow() {
return low;
}
public void setLow(String low) {
this.low = low;
}
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;
}
}
8.在跟目录下添加xml文件：(截取一部分就可以)
<?xml version="1.0" encoding="UTF-8" ?>
<c c1="0">
<d d1="101010100" d2="北京" d3="beijing" d4="北京"/>
<d d1="101010200" d2="海淀" d3="haidian" d4="北京"/>
<d d1="101010300" d2="朝阳" d3="chaoyang" d4="北京"/>
<d d1="101010400" d2="顺义" d3="shunyi" d4="北京"/>
<d d1="101010500" d2="怀柔" d3="huairou" d4="北京"/>
<d d1="101010600" d2="通州" d3="tongzhou" d4="北京"/>
<d d1="101010700" d2="昌平" d3="changping" d4="北京"/>
<d d1="101010800" d2="延庆" d3="yanqing" d4="北京"/>
<d d1="101010900" d2="丰台" d3="fengtai" d4="北京"/>
<d d1="101011000" d2="石景山" d3="shijingshan" d4="北京"/>
<d d1="101011100" d2="大兴" d3="daxing" d4="北京"/>
<d d1="101011200" d2="房山" d3="fangshan" d4="北京"/>
<d d1="101011300" d2="密云" d3="miyun" d4="北京"/>
<d d1="101011400" d2="门头沟" d3="mentougou" d4="北京"/>
<d d1="101011500" d2="平谷" d3="pinggu" d4="北京"/>
<d d1="101020100" d2="上海" d3="shanghai" d4="上海"/>
<d d1="101020200" d2="闵行" d3="minhang" d4="上海"/>
<d d1="101020300" d2="宝山" d3="baoshan" d4="上海"/>
<d d1="101020500" d2="嘉定" d3="jiading" d4="上海"/>
<d d1="101020600" d2="南汇" d3="nanhui" d4="上海"/>
<d d1="101020700" d2="金山" d3="jinshan" d4="上海"/>
<d d1="101020800" d2="青浦" d3="qingpu" d4="上海"/>
<d d1="101020900" d2="松江" d3="songjiang" d4="上海"/>
<d d1="101021000" d2="奉贤" d3="fengxian" d4="上海"/>
<d d1="101021100" d2="崇明" d3="chongming" d4="上海"/>
<d d1="101021200" d2="徐家汇" d3="xujiahui" d4="上海"/>
<d d1="101021300" d2="浦东" d3="pudong" d4="上海"/>
</c>
9.启动类：
package com.csq.study.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.EnableScheduling;
@SpringBootApplication
@EnableScheduling
public class Aplication {
public static void main(String[] args) {
SpringApplication.run(Aplication.class, args);
}
}
10.配置文件
#应用名称
spring.application.name=csq-weather-quartz
11.启动项目：发现如下截图，代表模拟成功
12.项目排版
13。出现的错误：
我在第一次做的时候，配置步骤什么的都没有错，可是项目启动，控制台就是不出现开始同步的据，折腾了好久，后来查阅资料是因为在springboot2.0以后自动兼容了Quartz,我的springboot的版本低于2.0导致的，所以我去我的pom文件中修改了版本，然后就可以了。