为什么不同格式xml格式返回OpenWeatherMap api的温度值不一样： http ://api.openweathermap.org/data/2.5/forecast/daily?q=shanghai&units=metric&mode=xml&cnt=3
<weatherdata>
<location>
<name>Shanghai</name>
<type/>
<country>CN</country>
<timezone/>
<location altitude="0" latitude="31.222219" longitude="121.458061" geobase="geonames" geobaseid="0"/>
</location>
<credit/>
<meta>
<lastupdate/>
<calctime>0.0165</calctime>
<nextupdate/>
</meta>
<sun rise="2014-03-26T21:48:52" set="2014-03-27T10:10:08"/>
<forecast>
<time day="2014-03-27">
<symbol number="800" name="sky is clear" var="01d"/>
<precipitation/>
<windDirection deg="117" code="ESE" name="East-southeast"/>
<windSpeed mps="4" name="Gentle Breeze"/>
<temperature day="21.89" min="12.59" max="25.08" night="14.14" eve="22.43" morn="12.59"/>
<pressure unit="hPa" value="1031.37"/>
<humidity value="72" unit="%"/>
<clouds value="sky is clear" all="0" unit="%"/>
</time>
<time day="2014-03-28">
<symbol number="501" name="moderate rain" var="10d"/>
<precipitation value="5" type="rain"/>
<windDirection deg="143" code="SE" name="SouthEast"/>
<windSpeed mps="8.7" name="Fresh Breeze"/>
<temperature day="18.32" min="15.27" max="18.51" night="17.4" eve="18.51" morn="15.27"/>
<pressure unit="hPa" value="1026"/>
<humidity value="96" unit="%"/>
<clouds value="overcast clouds" all="92" unit="%"/>
</time>
<time day="2014-03-29">
<symbol number="502" name="heavy intensity rain" var="10d"/>
<precipitation value="24" type="rain"/>
<windDirection deg="260" code="W" name="West"/>
<windSpeed mps="5.94" name="Moderate breeze"/>
<temperature day="19.68" min="13.92" max="19.68" night="13.92" eve="17.83" morn="18.49"/>
<pressure unit="hPa" value="1015.91"/>
<humidity value="99" unit="%"/>
<clouds value="overcast clouds" all="92" unit="%"/>
</time>
</forecast>
</weatherdata>
json格式： http ://api.openweathermap.org/data/2.5/forecast/daily?q=shanghai&units=metric&mode=json&cnt=3
{
"cod": "200",
"message": 0.019,
"city": {
"id": 1796236,
"name": "Shanghai",
"coord": {
"lon": 121.458061,
"lat": 31.222219
},
"country": "CN",
"population": 0,
"sys": {
"population": 0
}
},
"cnt": 3,
"list": [
{
"dt": 1395892800,
"temp": {
"day": 21.82,
"min": 12.51,
"max": 25.01,
"night": 14.09,
"eve": 22.37,
"morn": 12.51
},
"pressure": 1031.37,
"humidity": 72,
"weather": [
{
"id": 800,
"main": "Clear",
"description": "sky is clear",
"icon": "01d"
}
],
"speed": 4,
"deg": 117,
"clouds": 0
},
{
"dt": 1395979200,
"temp": {
"day": 18.28,
"min": 15.22,
"max": 18.47,
"night": 17.38,
"eve": 18.47,
"morn": 15.22
},
"pressure": 1026,
"humidity": 96,
"weather": [
{
"id": 501,
"main": "Rain",
"description": "moderate rain",
"icon": "10d"
}
],
"speed": 8.7,
"deg": 143,
"clouds": 92,
"rain": 5
},
{
"dt": 1396065600,
"temp": {
"day": 19.67,
"min": 13.92,
"max": 19.67,
"night": 13.92,
"eve": 17.83,
"morn": 18.48
},
"pressure": 1015.91,
"humidity": 99,
"weather": [
{
"id": 502,
"main": "Rain",
"description": "heavy intensity rain",
"icon": "10d"
}
],
"speed": 5.94,
"deg": 260,
"clouds": 92,
"rain": 24
}
]
}
温度：json "temp":{"day":21.82,"min":12.51,"max":25.01,"night":14.09,"eve":22.37,"morn":12.51},"pressure": 1031.37,"湿度":72 xml 压力一样，为什么温度不一样？