东北、风速：
1米/秒"/>
学生Student类
packagecom.ljq.entity;
importjava.util.Set;
/**
*学生信息表
*
*@authorjiqinlin
*
*/
publicclassStudent{
/**姓名**/
privateStringname;
/**性别**/
privateStringsex;
/**所学课程**/
privateSetlessons;
publicStudent（）{
}
publicStudent（Stringname,Stringsex,Setlessons）{
this.name=name;
this.sex=sex;
this.lessons=lessons;
}
publicStringgetName（）{
returnname;
}
publicvoidsetName（Stringname）{
this.name=name;
}
publicStringgetSex（）{
returnsex;
}
publicvoidsetSex（Stringsex）{
this.sex=sex;
}
publicSetgetLessons（）{
returnlessons;
}
publicvoidsetLessons（Setlessons）{
this.lessons=lessons;
}
}
课程Lesson类
packagecom.ljq.entity;
/**
*课程
*
*@authorjiqinlin
*
*/
publicclassLesson{
/**课程名称**/
privateStringlessonName;
/**课程成绩**/
privateintlessonScore;
publicLesson（）{
}
publicLesson（StringlessonName,intlessonScore）{
this.lessonName=lessonName;
this.lessonScore=lessonScore;
}
publicStringgetLessonName（）{
returnlessonName;
}
publicvoidsetLessonName（StringlessonName）{
this.lessonName=lessonName;
}
publicintgetLessonScore（）{
returnlessonScore;
}
publicvoidsetLessonScore（intlessonScore）{
this.lessonScore=lessonScore;
}
}
当前天气信息的类Weather
packagecom.ljq.entity;
importjava.util.List;
/**
*当前天气信息的类
*
*@authorjiqinlin
*
*/
publicclassWeather{
/**城市**/
privateStringcity;
/**当天日期，格式为yyyy-mm-dd**/
privateStringforecase_date;
/**当前时间**/
privateStringcurrent_date_time;
/**现象描述**/
privateStringcurrent_condition;
/**当前干燥程度**/
privateStringcurrent_humidity;
/**当前图片地址**/
privateStringcurrent_image_url;
/**风向**/
privateStringcurrent_wind;
/**此处只能用有序的List集合，因为第一位索引表示当天的天气情况**/
privateListforecasts;
publicStringgetCity（）{
returncity;
}
publicvoidsetCity（Stringcity）{
this.city=city;
}
publicStringgetForecase_date（）{
returnforecase_date;
}
publicvoidsetForecase_date（Stringforecase_date）{
this.forecase_date=forecase_date;
}
publicStringgetCurrent_date_time（）{
returncurrent_date_time;
}
publicvoidsetCurrent_date_time（Stringcurrent_date_time）{
this.current_date_time=current_date_time;
}
publicStringgetCurrent_condition（）{
returncurrent_condition;
}
publicvoidsetCurrent_condition（Stringcurrent_condition）{
this.current_condition=current_condition;
}
publicStringgetCurrent_humidity（）{
returncurrent_humidity;
}
publicvoidsetCurrent_humidity（Stringcurrent_humidity）{
this.current_humidity=current_humidity;
}
publicStringgetCurrent_image_url（）{
returncurrent_image_url;
}
publicvoidsetCurrent_image_url（Stringcurrent_image_url）{
this.current_image_url=current_image_url;
}
publicStringgetCurrent_wind（）{
returncurrent_wind;
}
publicvoidsetCurrent_wind（Stringcurrent_wind）{
this.current_wind=current_wind;
}
publicListgetForecasts（）{
returnforecasts;
}
publicvoidsetForecasts（Listforecasts）{
this.forecasts=forecasts;
}
}
未来天气信息的类Forecast
packagecom.ljq.entity;
/**
*未来天气信息的类
*
*@authorjiqinlin
*
*/
publicclassForecast{
/**星期几**/
privateStringday_of_week;
/**最低温度**/
privateStringlow;
/**最高温度**/
privateStringhigh;
/**图片地址**/
privateStringimage_url;
/**现象描述**/
privateStringcondition;
publicStringgetDay_of_week（）{
returnday_of_week;
}
publicvoidsetDay_of_week（Stringday_of_week）{
this.day_of_week=day_of_week;
}
publicStringgetLow（）{
returnlow;
}
publicvoidsetLow（Stringlow）{
this.low=low;
}
publicStringgetHigh（）{
returnhigh;
}
publicvoidsetHigh（Stringhigh）{
this.high=high;
}
publicStringgetImage_url（）{
returnimage_url;
}
publicvoidsetImage_url（Stringimage_url）{
this.image_url=image_url;
}
publicStringgetCondition（）{
returncondition;
}
publicvoidsetCondition（Stringcondition）{
this.condition=condition;
}
}
StudentSax解析
packagecom.ljq.sax;
importjava.util.HashSet;
importjava.util.Set;
importorg.xml.sax.Attributes;
importorg.xml.sax.SAXException;
importorg.xml.sax.helpers.DefaultHandler;
importcom.ljq.entity.Lesson;
importcom.ljq.entity.Student;
publicclassStudentSaxextendsDefaultHandler{
privateLessonlesson;
privateSetlessons;
privateStudentstudent;
privateSetstudents;
privateStringpreTag;
@Override
publicvoidstartDocument（）throwsSAXException{
lessons=newHashSet（）;
students=newHashSet（）;
}
@Override
publicvoidcharacters（char[]ch,intstart,intlength）
throwsSAXException{
if（student!
=null）{
Stringdata=newString（ch,start,length）;
if（"name".equals（preTag））{
student.setName（data）;
}
if（"sex".equals（preTag））{
student.setSex（data）;
}
if（"lessonName".equals（preTag））{
lesson.setLessonName（data）;
}
if（"lessonScore".equals（preTag））{
lesson.setLessonScore（Integer.parseInt（data））;
}
}
}
@Override
publicvoidstartElement（Stringuri,StringlocalName,Stringname,
Attributesattr）throwsSAXException{
if（"student".equals（name））{
student=newStudent（）;
}
if（"lesson".equals（name））{
lesson=newLesson（）;
}
preTag=name;
}
@Override
publicvoidendElement（Stringuri,StringlocalName,Stringname）
throwsSAXException{
if（student!
=null&&"student".equals（name））{
student.setLessons（lessons）;
students.add（student）;
student=null;
lessons=newHashSet（）;
}
if（lesson!
=null&&"lesson".equals（name））{
lessons.add（lesson）;
lesson=null;
}
preTag=null;
}
publicSetgetStudents（）{
returnstudents;
}
publicSetgetLessons（）{
returnlessons;
}
}
WeatherSax解析
packagecom.ljq.sax;
importjava.util.ArrayList;
importjava.util.List;
importorg.xml.sax.Attributes;
importorg.xml.sax.SAXException;
importorg.xml.sax.helpers.DefaultHandler;
importcom.ljq.entity.Forecast;
importcom.ljq.entity.Weather;
publicclassWeatherSaxextendsDefaultHandler{
privateWeatherweather;
privateForecastforecast;
privateListforecasts;
privateStringpreTag;
@Override
publicvoidstartDocument（）throwsSAXException{
weather=newWeather（）;
forecasts=newArrayList（）;
}
@Override
publicvoidcharacters（char[]ch,intstart,intlength）
throwsSAXException{
}
@Override
publicvoidstartElement（Stringuri,StringlocalName,Stringname,
Attributesattr）throwsSAXException{
if（"city".equals（name））{
weather.setCity（attr.getValue（"data"））;//等价于weather.setCity（attr.getValue（"data"））;
}
if（"forecast_date".equals（name））{
weather.setForecase_date（attr.getValue（"data"））;
}
if（"current_date_time".equals（name））{
weather.setCurrent_date_time（attr.getValue（"data"））;
}
if（"current_conditions".equals（name））{
preTag=name;
}
if（"condition".equals（name）&&"current_conditions".equals（preTag））{
weather.setCurrent_condition（attr.getValue（"data"））;
}
if（"humidity".equals（name））{
weather.setCurrent_humidity（attr.getValue（"data"））;
}
if（"icon".equals（name）&&"current_conditions".equals（preTag））{
weather.setCurrent_image_url（attr.getValue（"data"））;
}
if（"wind_condition".equals（name））{
weather.setCurrent_wind（attr.getValue（"data"））;
}
if（"forecast_conditions".equals（name））{
preTag=name;//记录
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