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胡立强
/
VVAS-Weather
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Commit ad71b23a
authored
Nov 11, 2021
by
袁津
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[chg]增加天气接口调用失败后三次重试机制
1 parent
8e47d0f6
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3 changed files
with
102 additions
and
53 deletions
pom.xml
src/main/java/com/viontech/service/impl/JsonService.java
src/main/java/com/viontech/service/impl/WeatherService.java
pom.xml
View file @
ad71b23
...
...
@@ -59,6 +59,11 @@
<groupId>
org.springframework
</groupId>
<artifactId>
spring-context-support
</artifactId>
</dependency>
<dependency>
<groupId>
com.github.rholder
</groupId>
<artifactId>
guava-retrying
</artifactId>
<version>
2.0.0
</version>
</dependency>
</dependencies>
<build>
...
...
src/main/java/com/viontech/service/impl/JsonService.java
View file @
ad71b23
package
com
.
viontech
.
service
.
impl
;
import
java.io.IOException
;
import
java.text.SimpleDateFormat
;
import
java.util.HashMap
;
import
java.util.Map
;
import
com.fasterxml.jackson.databind.DeserializationFeature
;
import
com.fasterxml.jackson.databind.ObjectMapper
;
import
com.github.rholder.retry.*
;
import
com.google.common.base.Predicates
;
import
com.viontech.model.*
;
import
com.viontech.utils.HttpUtils
;
import
org.apache.http.HttpResponse
;
import
org.apache.http.util.EntityUtils
;
import
org.springframework.beans.factory.annotation.Autowired
;
import
com.fasterxml.jackson.databind.DeserializationFeature
;
import
com.fasterxml.jackson.databind.ObjectMapper
;
import
com.viontech.utils.HttpUtils
;
import
org.springframework.stereotype.Service
;
import
java.text.SimpleDateFormat
;
import
java.util.Date
;
import
java.util.HashMap
;
import
java.util.Map
;
import
java.util.concurrent.Callable
;
import
java.util.concurrent.TimeUnit
;
/**
* @author zhaibolin
*/
...
...
@@ -25,76 +26,119 @@ import org.springframework.stereotype.Service;
@Service
public
class
JsonService
{
private
static
final
SimpleDateFormat
sdf
=
new
SimpleDateFormat
(
"yyyy-MM-dd HH:mm:ss.SSS"
);
@Autowired
private
Json
jsonclass
;
public
SimpleWeather
getWeatherInfo
(
int
cityId
)
throws
IOException
{
String
json
=
getWeatherJson
(
cityId
);
try
{
ObjectMapper
mapper
=
new
ObjectMapper
();
mapper
.
configure
(
DeserializationFeature
.
FAIL_ON_UNKNOWN_PROPERTIES
,
false
);
mapper
.
setDateFormat
(
new
SimpleDateFormat
(
"yyyy-MM-dd"
));
WeatherMessage
weatherMessage
=
mapper
.
readValue
(
json
,
WeatherMessage
.
class
);
String
jsons
=
getAqiJson
(
cityId
);
ObjectMapper
mappers
=
new
ObjectMapper
();
mappers
.
configure
(
DeserializationFeature
.
FAIL_ON_UNKNOWN_PROPERTIES
,
false
);
mappers
.
setDateFormat
(
new
SimpleDateFormat
(
"yyyy-MM-dd HH:mm:ss"
));
WeatherMessage
weatherMessage2
=
mappers
.
readValue
(
jsons
,
WeatherMessage
.
class
);
public
SimpleWeather
getWeatherInfo
(
int
cityId
)
{
System
.
out
.
println
(
"城市["
+
cityId
+
"]获取天气信息"
);
SimpleWeather
simpleWeather
=
weathers2SimpleWeather
(
weatherMessage
,
weatherMessage2
);
return
simpleWeather
;
}
catch
(
IOException
e
)
{
System
.
out
.
println
(
"json解析出错!"
);
System
.
out
.
println
(
json
);
}
return
null
;
}
Map
<
String
,
WeatherMessage
>
dataMap
=
new
HashMap
<>();
private
String
getWeatherJson
(
int
cityId
)
throws
IOException
{
// 调用weather接口
Callable
<
Boolean
>
weatherCallable
=
()
->
{
String
host
=
jsonclass
.
getHost1
();
String
path
=
jsonclass
.
getPath1
();
String
method
=
"POST"
;
String
appcode
=
jsonclass
.
getAppcode
();
Map
<
String
,
String
>
headers
=
new
HashMap
<
String
,
String
>();
Map
<
String
,
String
>
headers
=
new
HashMap
<
>();
headers
.
put
(
"Authorization"
,
"APPCODE "
+
appcode
);
headers
.
put
(
"Content-Type"
,
"application/x-www-form-urlencoded; charset=UTF-8"
);
Map
<
String
,
String
>
querys
=
new
HashMap
<
String
,
String
>();
Map
<
String
,
String
>
bodys
=
new
HashMap
<
String
,
String
>();
Map
<
String
,
String
>
querys
=
new
HashMap
<
>();
Map
<
String
,
String
>
bodys
=
new
HashMap
<
>();
bodys
.
put
(
"cityId"
,
String
.
valueOf
(
cityId
));
HttpResponse
response
=
HttpUtils
.
doPost
(
host
,
path
,
method
,
headers
,
querys
,
bodys
);
String
json
=
EntityUtils
.
toString
(
response
.
getEntity
());
HttpResponse
response
=
null
;
try
{
response
=
HttpUtils
.
doPost
(
host
,
path
,
method
,
headers
,
querys
,
bodys
);
}
catch
(
Exception
e
)
{
e
.
printStackTrace
();
System
.
out
.
println
(
sdf
.
format
(
new
Date
())
+
"调用weather接口返回json:"
+
json
);
ObjectMapper
mapper
=
new
ObjectMapper
();
mapper
.
configure
(
DeserializationFeature
.
FAIL_ON_UNKNOWN_PROPERTIES
,
false
);
mapper
.
setDateFormat
(
new
SimpleDateFormat
(
"yyyy-MM-dd"
));
WeatherMessage
weatherMessage
=
mapper
.
readValue
(
json
,
WeatherMessage
.
class
);
if
(
null
!=
weatherMessage
)
{
dataMap
.
put
(
"WEATHER"
,
weatherMessage
);
return
true
;
}
return
EntityUtils
.
toString
(
response
.
getEntity
());
return
false
;
};
Retryer
<
Boolean
>
weatherRetryer
=
RetryerBuilder
.<
Boolean
>
newBuilder
()
// 发生异常时重试
.
retryIfException
()
// 返回false时重试
.
retryIfResult
(
Predicates
.
equalTo
(
false
))
// 每次重试等待时间
.
withWaitStrategy
(
WaitStrategies
.
fixedWait
(
3
,
TimeUnit
.
SECONDS
))
// 最大重试次数
.
withStopStrategy
(
StopStrategies
.
stopAfterAttempt
(
3
))
// 记录第几次执行
.
withRetryListener
(
new
RetryListener
()
{
@Override
public
<
V
>
void
onRetry
(
Attempt
<
V
>
attempt
)
{
System
.
out
.
println
(
"[weather retry]times="
+
attempt
.
getAttemptNumber
());
}
})
.
build
();
private
String
getAqiJson
(
int
cityId
)
throws
IOException
{
try
{
weatherRetryer
.
call
(
weatherCallable
);
}
catch
(
Exception
e
)
{
System
.
out
.
println
(
"城市["
+
cityId
+
"]调用Weather接口失败"
);
return
null
;
}
// 调用aqi接口
Callable
<
Boolean
>
aqiCallable
=
()
->
{
String
host
=
jsonclass
.
getHost2
();
String
path
=
jsonclass
.
getPath2
();
String
method
=
"POST"
;
String
appcode
=
jsonclass
.
getAppcode
();
Map
<
String
,
String
>
headers
=
new
HashMap
<
String
,
String
>();
Map
<
String
,
String
>
headers
=
new
HashMap
<
>();
headers
.
put
(
"Authorization"
,
"APPCODE "
+
appcode
);
headers
.
put
(
"Content-Type"
,
"application/x-www-form-urlencoded; charset=UTF-8"
);
Map
<
String
,
String
>
querys
=
new
HashMap
<
String
,
String
>();
Map
<
String
,
String
>
bodys
=
new
HashMap
<
String
,
String
>();
Map
<
String
,
String
>
querys
=
new
HashMap
<
>();
Map
<
String
,
String
>
bodys
=
new
HashMap
<
>();
bodys
.
put
(
"cityId"
,
String
.
valueOf
(
cityId
));
HttpResponse
response
=
HttpUtils
.
doPost
(
host
,
path
,
method
,
headers
,
querys
,
bodys
);
String
json
=
EntityUtils
.
toString
(
response
.
getEntity
());
System
.
out
.
println
(
sdf
.
format
(
new
Date
())
+
"调用AQI接口返回json:"
+
json
);
ObjectMapper
mapper
=
new
ObjectMapper
();
mapper
.
configure
(
DeserializationFeature
.
FAIL_ON_UNKNOWN_PROPERTIES
,
false
);
mapper
.
setDateFormat
(
new
SimpleDateFormat
(
"yyyy-MM-dd HH:mm:ss"
));
WeatherMessage
aqiMessage
=
mapper
.
readValue
(
json
,
WeatherMessage
.
class
);
if
(
null
!=
aqiMessage
)
{
dataMap
.
put
(
"AQI"
,
aqiMessage
);
return
true
;
}
return
false
;
};
Retryer
<
Boolean
>
aqiRetryer
=
RetryerBuilder
.<
Boolean
>
newBuilder
()
// 发生异常时重试
.
retryIfException
()
// 返回false时重试
.
retryIfResult
(
Predicates
.
equalTo
(
false
))
// 每次重试等待时间
.
withWaitStrategy
(
WaitStrategies
.
fixedWait
(
3
,
TimeUnit
.
SECONDS
))
// 最大重试次数
.
withStopStrategy
(
StopStrategies
.
stopAfterAttempt
(
3
))
// 记录第几次执行
.
withRetryListener
(
new
RetryListener
()
{
@Override
public
<
V
>
void
onRetry
(
Attempt
<
V
>
attempt
)
{
System
.
out
.
println
(
"[aqi retry]times="
+
attempt
.
getAttemptNumber
());
}
})
.
build
();
HttpResponse
response
=
null
;
try
{
response
=
HttpUtils
.
doPost
(
host
,
path
,
method
,
headers
,
querys
,
bodys
);
aqiRetryer
.
call
(
aqiCallable
);
}
catch
(
Exception
e
)
{
// TODO Auto-generated catch block
e
.
printStackTrace
()
;
System
.
out
.
println
(
"城市["
+
cityId
+
"]调用AQI接口失败"
);
return
null
;
}
// return response.toString();
return
EntityUtils
.
toString
(
response
.
getEntity
());
return
weathers2SimpleWeather
(
dataMap
.
get
(
"WEATHER"
),
dataMap
.
get
(
"AQI"
));
}
private
SimpleWeather
weathers2SimpleWeather
(
WeatherMessage
weatherMessage
,
WeatherMessage
weatherMessage2
)
{
...
...
src/main/java/com/viontech/service/impl/WeatherService.java
View file @
ad71b23
...
...
@@ -56,7 +56,7 @@ public class WeatherService {
}
SimpleWeather
simpleWeather
=
jsonService
.
getWeatherInfo
(
weatherCode
);
if
(
simpleWeather
==
null
)
{
System
.
out
.
println
(
weatherCode
);
//
System.out.println(weatherCode);
continue
;
}
...
...
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