根据地址智能识别省市县/区

项目上遇到个需求，根据身份证地址或者用户输入的地址智能识别省市县/区

思路是：给到接口地址详情address，逐个匹配省province、市city、县/区area，然后将province+city+area返回即可，需要考虑一些情况：直辖市，address只有省、县/区，address只有市、县/区，市与县/区重名，县/区与县/区重名。

上代码：
查询省province、市city、县/区area

-- province
SELECT
CASEWHENtemp.province LIKE '%省%' THENsubstring_index( temp.province, '省', 1 ) WHEN temp.province LIKE '%自治区%' THENsubstring_index( temp.province, '自治区', 1 ) WHEN temp.province LIKE '%市%' THENsubstring_index( temp.province, '市', 1 ) END AS provinceShort,temp.province AS provinceSource,temp.ids recordId FROM( SELECT province, ids, count( DISTINCT province ) FROM city_dic GROUP BY province ) temp;-- city
SELECTCASEWHENtemp.city LIKE '%市%' THENsubstring_index( temp.city, '市', 1 ) WHEN temp.city LIKE '%自治%' THENsubstring_index( temp.city, '自治', 1 ) WHEN temp.city LIKE '%盟%' THENsubstring_index( temp.city, '盟', 1 ) WHEN temp.city LIKE '%地区%' THENsubstring_index( temp.city, '地区', 1 ) ELSE temp.city END AS cityShort,temp.city AS citySource,temp.ids recordId FROM( SELECT city, ids, count( DISTINCT city ) FROM city_dic GROUP BY city ) temp;-- areaSELECTCASEWHENLENGTH( temp.area ) < 7 THENtemp.area WHEN temp.area = '津市市' THEN'津市' WHEN temp.area = '辉县市' THEN'辉县' WHEN temp.area LIKE '%自治%' THENsubstring_index( temp.area, '自治', 1 ) WHEN temp.area LIKE '%区%' THENsubstring_index( temp.area, '区', 1 ) WHEN temp.area LIKE '%县%' THENsubstring_index( temp.area, '县', 1 ) WHEN temp.area LIKE '%市%' THENsubstring_index( temp.area, '市', 1 ) WHEN temp.area LIKE '%旗%' THENsubstring_index( temp.area, '旗', 1 ) END AS areaShort,temp.area AS areaSource,temp.ids recordId FROM( SELECT area, ids FROM city_dic ) temp;

逐个匹配省province、市city、县/区area （注：1、代码在jfinal框架下完成的，2、Record作用和Map<String,Object>类似）

//province
String province = "";
for(Record temp : provinces){String provinceShort = temp.getStr("provinceShort");if(addrStr.contains(provinceShort)){province = temp.getStr("provinceSource");}
}
//city
String city = "";List<Record> cityRecords = new ArrayList<Record>();
for(Record temp : citys){String cityShort = temp.getStr("cityShort");if(addrStr.contains(cityShort)){cityRecords.add(temp);}
}
Record cityRecord = new Record();// if onlyone city
if(cityRecords.size() == 1){city = cityRecords.get(0).getStr("citySource");cityRecord = cityRecords.get(0);
}else if(cityRecords.size() > 1){for(Record tempCityRecords : cityRecords){String cityId = tempCityRecords.getStr("recordId"); //find city_dic by cityIdRecord cityRecordTemp = Db.findFirst("select * from city_dic where ids = ?", cityId);if(province.equals(cityRecordTemp.getStr("province"))){city = cityRecordTemp.getStr("city");cityRecord = cityRecordTemp;}}
}       //area
String area = "";
List<Record> areaRecords = new ArrayList<Record>();
for(Record temp : areas){String areaShort = temp.getStr("areaShort");if(addrStr.contains(areaShort)){areaRecords.add(temp);}
}

判断省、县/区

// if not empty province and empty city
if(StringUtils.isNotBlank(province) && StringUtils.isBlank(city)){if(areaRecords.size() == 1){String areaId = areaRecords.get(0).getStr("recordId");//find city by areaRecord areaRecordTemp = Db.findFirst("select * from city_dic where ids = ?", areaId);province = areaRecordTemp.getStr("province");city = areaRecordTemp.getStr("city");area = areaRecordTemp.getStr("area");if(province.equals("北京市")||province.equals("上海市")||province.equals("天津市")||province.equals("重庆市")){province = "";}return province + city + area;} else if (areaRecords.size() > 1) {for(Record tempAreaRecords : areaRecords){String areaId = tempAreaRecords.getStr("recordId"); //find city by areaRecord areaRecordTemp = Db.findFirst("select * from city_dic where ids = ?", areaId);if(province.equals(areaRecordTemp.getStr("province"))){city = areaRecordTemp.getStr("city");area = areaRecordTemp.getStr("area");if(province.equals("北京市")||province.equals("上海市")||province.equals("天津市")||province.equals("重庆市")){province = "";}return province + city + area;}}} else {if(province.equals("北京市")||province.equals("上海市")||province.equals("天津市")||province.equals("重庆市")){province = "";}return province + city + area;}
}

判断市、县/区

// if empty province and not empty city
if(StringUtils.isBlank(province) && StringUtils.isNotBlank(city)){String cityId = cityRecord.getStr("recordId");//find province by citycityRecord = Db.findFirst("select * from city_dic where ids = ?", cityId);province = cityRecord.getStr("province");
}

最后

if(areaRecords.size() == 1){area = areaRecords.get(0).getStr("areaSource");
} else if (areaRecords.size() > 1) {for(Record tempAreaRecords : areaRecords){String areaId = tempAreaRecords.getStr("recordId"); //find city by areaRecord areaRecordTemp = Db.findFirst("select * from city_dic where ids = ?", areaId);if(province.equals(areaRecordTemp.getStr("province"))){city = areaRecordTemp.getStr("city");area = areaRecordTemp.getStr("area");if(province.equals("北京市")||province.equals("上海市")||province.equals("天津市")||province.equals("重庆市")){province = "";}return province + city + area;}}
}

结束，将province+city+area返回即可

Enjoying!

附：建表语句：

CREATE TABLE `city_dic` (`ids` varchar(32) NOT NULL,`p_code` varchar(100) NOT NULL COMMENT '省编号',`province` varchar(255) DEFAULT NULL COMMENT '省',`c_code` varchar(100) DEFAULT NULL COMMENT '市编号',`city` varchar(255) DEFAULT NULL COMMENT '市',`a_code` varchar(100) DEFAULT NULL COMMENT '区编号',`area` varchar(255) DEFAULT NULL COMMENT '区',`status` tinyint(2) DEFAULT NULL,PRIMARY KEY (`ids`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='省市区';

附：成果展示

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根据地址智能识别省市县/区

项目上遇到个需求，根据身份证地址或者用户输入的地址智能识别省市县/区

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