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refactor: 各级数据的区划代码截取为指定位数

modood il y a 7 ans
Parent
commit
59ba7ce485
1 fichiers modifiés avec 28 ajouts et 25 suppressions
  1. 28 25
      lib/crawler.js

+ 28 - 25
lib/crawler.js

@@ -4,12 +4,13 @@ const iconv = require('iconv-lite')
 const BufferHelper = require('bufferhelper')
 
 /*
- * 备注:命名简写描述
- * 省份(Province)           p
- * 城市(City)               c
- * 区县(Area)               a
- * 乡镇街道(Street)         s
- * 村(居)委会(Village)    v
+ * 命名简写备注
+ *
+ * 省级(省份,Province)           p
+ * 地级(城市,City)               c
+ * 县级(区县,Area)               a
+ * 乡级(乡镇街道,Street)         s
+ * 村级(村委会居委会,Village)    v
  */
 
 const host = 'www.stats.gov.cn'
@@ -41,8 +42,8 @@ const links = [
  * @author modood <https://github.com/modood>
  * @datetime 2018-01-31 19:23
  */
-exports.fetch = (host, path, regexp) =>
-  new Promise((resolve, reject) => http.get({ host, path, timeout: 1000 }, res => {
+exports.fetch = (host, path, regexp, codeLen) =>
+  new Promise((resolve, reject) => http.get({ host, path, timeout: 3000 }, res => {
     const bufferHelper = new BufferHelper()
     const statusCode = res.statusCode
 
@@ -58,28 +59,28 @@ exports.fetch = (host, path, regexp) =>
 
       const result = {}
       let current
-      while ((current = regexp.exec(rawData)) !== null) result[current[1]] = current[2].trim()
+      while ((current = regexp.exec(rawData)) !== null) result[current[1].substr(0, codeLen)] = current[2].trim()
 
       return resolve(result)
     })
   }).on('error', reject).on('timeout', () => reject(new Error('timeout'))))
 
 /**
- * 抓取省数据
+ * 抓取省数据
  * @author modood <https://github.com/modood>
  * @datetime 2018-01-31 19:40
  */
 exports.fetchProvinces = async () => {
   try {
-    return await exports.fetch(host, links[0].path, links[0].regexp)
+    return await exports.fetch(host, links[0].path, links[0].regexp, 2)
   } catch (err) {
-    console.error(err)
-    process.exit(-1)
+    console.log(`抓取省级数据失败(${err}),正在重试...`)
+    return this.fetchProvinces()
   }
 }
 
 /**
- * 抓取城市数据
+ * 抓取地级数据
  * @author modood <https://github.com/modood>
  * @datetime 2018-01-31 19:51
  */
@@ -87,15 +88,15 @@ exports.fetchCities = async (pCode) => {
   const path = links[1].path.replace('#{pCode}', pCode)
 
   try {
-    return await exports.fetch(host, path, links[1].regexp)
+    return await exports.fetch(host, path, links[1].regexp, 4)
   } catch (err) {
-    console.log(`抓取省份(${pCode})的城市数据失败(${err}),正在重试...`)
+    console.log(`抓取省级(${pCode})的地级数据失败(${err}),正在重试...`)
     return this.fetchCities(pCode)
   }
 }
 
 /**
- * 抓取县数据
+ * 抓取县数据
  * @author modood <https://github.com/modood>
  * @datetime 2018-01-31 20:03
  */
@@ -107,15 +108,16 @@ exports.fetchAreas = async (cCode) => {
     .replace('#{cCode}', cCode)
 
   try {
-    return await exports.fetch(host, path, links[2].regexp)
+    return await exports.fetch(host, path, links[2].regexp, 6)
   } catch (err) {
-    console.log(`抓取城市(${cCode})的区县数据失败(${err}),正在重试...`)
+    console.log(`抓取地级(${cCode})的县级数据失败(${err}),正在重试...`)
+    console.log(path)
     return this.fetchAreas(cCode)
   }
 }
 
 /**
- * 抓取街道数据
+ * 抓取乡级数据
  * @author modood <https://github.com/modood>
  * @datetime 2018-01-31 20:08
  */
@@ -129,15 +131,16 @@ exports.fetchStreets = async (aCode) => {
     .replace('#{aCode}', aCode)
 
   try {
-    return await exports.fetch(host, path, links[3].regexp)
+    return await exports.fetch(host, path, links[3].regexp, 9)
   } catch (err) {
-    console.log(`抓取区县(${aCode})的乡镇街道数据失败(${err}),正在重试...`)
+    console.log(`抓取县级(${aCode})的乡级数据失败(${err}),正在重试...`)
+    console.log(path)
     return this.fetchStreets(aCode)
   }
 }
 
 /**
- * 抓取村(居)委会数据
+ * 抓取村数据
  * @author modood <https://github.com/modood>
  * @datetime 2018-01-31 20:19
  */
@@ -153,9 +156,9 @@ exports.fetchVillages = async (sCode) => {
     .replace('#{sCode}', sCode)
 
   try {
-    return await exports.fetch(host, path, links[4].regexp)
+    return await exports.fetch(host, path, links[4].regexp, 12)
   } catch (err) {
-    console.log(`抓取乡镇街道(${sCode})的村(居)委会数据失败(${err}),正在重试...`)
+    console.log(`抓取乡级(${sCode})的村级数据失败(${err}),正在重试...`)
     return this.fetchVillages(sCode)
   }
 }