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SQL SERVER 使用 高德地图逆地址解析

作者:卞功鑫  ,转载请保留http://www.cnblogs.com/BinBinGo/p/6973234.html。

 

一般我们得到的经纬度信息为GPS信息,所以要使用高德地图的逆地址解析功能(即把经纬度信息转换为地址信息),先需要把GPS经纬度信息先转换为高德地图经纬度.

一 经纬度转换

高德提供了转换API接口

http://restapi.amap.com/v3/assistant/coordinate/convert?key=您的key&locations=116.481499,39.990475&coordsys=gps

使用些接口可以把GPS信息转换为高德经纬度信息.

 

二 使用高德逆地址解析功能

高德提供了API接口

http://restapi.amap.com/v3/geocode/regeo?key=您的key&location=116.481488,39.990464&poitype=商务写字楼&radius=1000&extensions=all&batch=false&roadlevel=0

可以把经纬度信息转换为地址信息

各参数使用方法见高德官方网站:http://lbs.amap.com/api/webservice/summary


以上内容为官方内容,接下来要实现的是. 这些功能怎么在SQL Server 中 实现 :

上篇文章介绍了

存储过程封装web service

但是想要完整的实现还需要很多工作要做:

 

  1 创建解析json函数

             

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CREATE FUNCTION dbo.parseJSON( @JSON NVARCHAR(MAX))RETURNS @hierarchy TABLE  (   element_id INT IDENTITY(1, 1) NOT NULL, /* internal surrogate primary key gives the order of parsing and the list order */   sequenceNo [int] NULL, /* the place in the sequence for the element */   parent_ID INT,/* if the element has a parent then it is in this column. The document is the ultimate parent, so you can get the structure from recursing from the document */   Object_ID INT,/* each list or object has an object id. This ties all elements to a parent. Lists are treated as objects here */   NAME NVARCHAR(2000),/* the name of the object */   StringValue NVARCHAR(MAX) NOT NULL,/*the string representation of the value of the element. */   ValueType VARCHAR(10) NOT null /* the declared type of the value represented as a string in StringValue*/  )ASBEGIN  DECLARE    @FirstObject INT, --the index of the first open bracket found in the JSON string    @OpenDelimiter INT,--the index of the next open bracket found in the JSON string    @NextOpenDelimiter INT,--the index of subsequent open bracket found in the JSON string    @NextCloseDelimiter INT,--the index of subsequent close bracket found in the JSON string    @Type NVARCHAR(10),--whether it denotes an object or an array    @NextCloseDelimiterChar CHAR(1),--either a ‘}‘ or a ‘]‘    @Contents NVARCHAR(MAX), --the unparsed contents of the bracketed expression    @Start INT, --index of the start of the token that you are parsing    @end INT,--index of the end of the token that you are parsing    @param INT,--the parameter at the end of the next Object/Array token    @EndOfName INT,--the index of the start of the parameter at end of Object/Array token    @token NVARCHAR(200),--either a string or object    @value NVARCHAR(MAX), -- the value as a string    @SequenceNo int, -- the sequence number within a list    @name NVARCHAR(200), --the name as a string    @parent_ID INT,--the next parent ID to allocate    @lenJSON INT,--the current length of the JSON String    @characters NCHAR(36),--used to convert hex to decimal    @result BIGINT,--the value of the hex symbol being parsed    @index SMALLINT,--used for parsing the hex value    @Escape INT --the index of the next escape character  DECLARE @Strings TABLE /* in this temporary table we keep all strings, even the names of the elements, since they are ‘escaped‘ in a different way, and may contain, unescaped, brackets denoting objects or lists. These are replaced in the JSON string by tokens representing the string */    (     String_ID INT IDENTITY(1, 1),     StringValue NVARCHAR(MAX)    )  SELECT--initialise the characters to convert hex to ascii    @characters=0123456789abcdefghijklmnopqrstuvwxyz,    @SequenceNo=0, --set the sequence no. to something sensible.  /* firstly we process all strings. This is done because [{} and ] aren‘t escaped in strings, which complicates an iterative parse. */    @parent_ID=0;  WHILE 1=1 --forever until there is nothing more to do    BEGIN      SELECT        @start=PATINDEX(%[^a-zA-Z]["]%, @json collate SQL_Latin1_General_CP850_Bin);--next delimited string      IF @start=0 BREAK --no more so drop through the WHILE loop      IF SUBSTRING(@json, @start+1, 1)="        BEGIN --Delimited Name          SET @start=@Start+1;          SET @end=PATINDEX(%[^\]["]%, RIGHT(@json, LEN(@json+|)-@start) collate SQL_Latin1_General_CP850_Bin);        END      IF @end=0 --no end delimiter to last string        BREAK --no more      SELECT @token=SUBSTRING(@json, @start+1, @end-1)      --now put in the escaped control characters      SELECT @token=REPLACE(@token, FROMString, TOString)      FROM        (SELECT          \" AS FromString, " AS ToString         UNION ALL SELECT \\, \         UNION ALL SELECT \/, /         UNION ALL SELECT \b, CHAR(08)         UNION ALL SELECT \f, CHAR(12)         UNION ALL SELECT \n, CHAR(10)         UNION ALL SELECT \r, CHAR(13)         UNION ALL SELECT \t, CHAR(09)        ) substitutions      SELECT @result=0, @escape=1  --Begin to take out any hex escape codes      WHILE @escape>0        BEGIN          SELECT @index=0,          --find the next hex escape sequence          @escape=PATINDEX(%\x[0-9a-f][0-9a-f][0-9a-f][0-9a-f]%, @token collate SQL_Latin1_General_CP850_Bin)          IF @escape>0 --if there is one            BEGIN              WHILE @index<4 --there are always four digits to a \x sequence                  BEGIN                  SELECT --determine its value                    @result=@result+POWER(16, @index)                    *(CHARINDEX(SUBSTRING(@token, @escape+2+3-@index, 1),                                @characters)-1), @index=@index+1 ;                END                -- and replace the hex sequence by its unicode value              SELECT @token=STUFF(@token, @escape, 6, NCHAR(@result))            END        END      --now store the string away      INSERT INTO @Strings (StringValue) SELECT @token      -- and replace the string with a token      SELECT @JSON=STUFF(@json, @start, @end+1,                    @string+CONVERT(NVARCHAR(5), @@identity))    END  -- all strings are now removed. Now we find the first leaf.   WHILE 1=1  --forever until there is nothing more to do  BEGIN  SELECT @parent_ID=@parent_ID+1  --find the first object or list by looking for the open bracket  SELECT @FirstObject=PATINDEX(%[{[[]%, @json collate SQL_Latin1_General_CP850_Bin)--object or array  IF @FirstObject = 0 BREAK  IF (SUBSTRING(@json, @FirstObject, 1)={)    SELECT @NextCloseDelimiterChar=}, @type=object  ELSE    SELECT @NextCloseDelimiterChar=], @type=array  SELECT @OpenDelimiter=@firstObject  WHILE 1=1 --find the innermost object or list...    BEGIN      SELECT        @lenJSON=LEN(@JSON+|)-1  --find the matching close-delimiter proceeding after the open-delimiter      SELECT        @NextCloseDelimiter=CHARINDEX(@NextCloseDelimiterChar, @json,                                      @OpenDelimiter+1)  --is there an intervening open-delimiter of either type      SELECT @NextOpenDelimiter=PATINDEX(%[{[[]%,             RIGHT(@json, @lenJSON-@OpenDelimiter)collate SQL_Latin1_General_CP850_Bin)--object      IF @NextOpenDelimiter=0        BREAK      SELECT @NextOpenDelimiter=@NextOpenDelimiter+@OpenDelimiter      IF @NextCloseDelimiter<@NextOpenDelimiter        BREAK      IF SUBSTRING(@json, @NextOpenDelimiter, 1)={        SELECT @NextCloseDelimiterChar=}, @type=object      ELSE        SELECT @NextCloseDelimiterChar=], @type=array      SELECT @OpenDelimiter=@NextOpenDelimiter    END  ---and parse out the list or name/value pairs  SELECT    @contents=SUBSTRING(@json, @OpenDelimiter+1,                        @NextCloseDelimiter-@OpenDelimiter-1)  SELECT    @JSON=STUFF(@json, @OpenDelimiter,                @NextCloseDelimiter-@OpenDelimiter+1,                @+@type+CONVERT(NVARCHAR(5), @parent_ID))  WHILE (PATINDEX(%[A-Za-z0-9@+.e]%, @contents collate SQL_Latin1_General_CP850_Bin))<>0    BEGIN      IF @Type=Object --it will be a 0-n list containing a string followed by a string, number,boolean, or null        BEGIN          SELECT            @SequenceNo=0,@end=CHARINDEX(:,  +@contents)--if there is anything, it will be a string-based name.          SELECT  @start=PATINDEX(%[^A-Za-z@][@]%,  +@contents collate SQL_Latin1_General_CP850_Bin)--AAAAAAAA          SELECT @token=SUBSTRING( +@contents, @start+1, @End-@Start-1),            @endofname=PATINDEX(%[0-9]%, @token collate SQL_Latin1_General_CP850_Bin),            @param=RIGHT(@token, LEN(@token)-@endofname+1)          SELECT            @token=LEFT(@token, @endofname-1),            @Contents=RIGHT( +@contents, LEN( +@contents+|)-@end-1)          SELECT  @name=stringvalue FROM @strings            WHERE string_id=@param --fetch the name        END      ELSE        SELECT @Name=null,@SequenceNo=@SequenceNo+1      SELECT        @end=CHARINDEX(,, @contents)-- a string-token, object-token, list-token, number,boolean, or null      IF @end=0        SELECT  @end=PATINDEX(%[A-Za-z0-9@+.e][^A-Za-z0-9@+.e]%, @Contents+  collate SQL_Latin1_General_CP850_Bin)          +1       SELECT        @start=PATINDEX(%[^A-Za-z0-9@+.e][A-Za-z0-9@+.e]%,  +@contents collate SQL_Latin1_General_CP850_Bin)      --select @start,@end, LEN(@contents+‘|‘), @contents       SELECT        @Value=RTRIM(SUBSTRING(@contents, @start, @End-@Start)),        @Contents=RIGHT(@contents+ , LEN(@contents+|)-@end)      IF SUBSTRING(@value, 1, 7)=@object        INSERT INTO @hierarchy          (NAME, SequenceNo, parent_ID, StringValue, Object_ID, ValueType)          SELECT @name, @SequenceNo, @parent_ID, SUBSTRING(@value, 8, 5),            SUBSTRING(@value, 8, 5), object      ELSE        IF SUBSTRING(@value, 1, 6)=@array          INSERT INTO @hierarchy            (NAME, SequenceNo, parent_ID, StringValue, Object_ID, ValueType)            SELECT @name, @SequenceNo, @parent_ID, SUBSTRING(@value, 7, 5),              SUBSTRING(@value, 7, 5), array        ELSE          IF SUBSTRING(@value, 1, 7)=@string            INSERT INTO @hierarchy              (NAME, SequenceNo, parent_ID, StringValue, ValueType)              SELECT @name, @SequenceNo, @parent_ID, stringvalue, string              FROM @strings              WHERE string_id=SUBSTRING(@value, 8, 5)          ELSE            IF @value IN (true, false)              INSERT INTO @hierarchy                (NAME, SequenceNo, parent_ID, StringValue, ValueType)                SELECT @name, @SequenceNo, @parent_ID, @value, boolean            ELSE              IF @value=null                INSERT INTO @hierarchy                  (NAME, SequenceNo, parent_ID, StringValue, ValueType)                  SELECT @name, @SequenceNo, @parent_ID, @value, null              ELSE                IF PATINDEX(%[^0-9]%, @value collate SQL_Latin1_General_CP850_Bin)>0                  INSERT INTO @hierarchy                    (NAME, SequenceNo, parent_ID, StringValue, ValueType)                    SELECT @name, @SequenceNo, @parent_ID, @value, real                ELSE                  INSERT INTO @hierarchy                    (NAME, SequenceNo, parent_ID, StringValue, ValueType)                    SELECT @name, @SequenceNo, @parent_ID, @value, int      if @Contents=  Select @SequenceNo=0    END  ENDINSERT INTO @hierarchy (NAME, SequenceNo, parent_ID, StringValue, Object_ID, ValueType)  SELECT -,1, NULL, ‘‘, @parent_id-1, @type--   RETURNEND
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   2  创建经纬度转换存储过程

 

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CREATE      PROC p_et_gps_convert    (      @log VARCHAR(80)    , @lat VARCHAR(80)    , @result VARCHAR(8000) OUTPUT    )AS    DECLARE @ServiceUrl AS VARCHAR(1000);     DECLARE @UrlAddress VARCHAR(500);---WebService地址:以http开头,结尾带斜杠,例如‘http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx/‘     SET @UrlAddress = http://restapi.amap.com/v3/assistant/coordinate/;    DECLARE @FunName VARCHAR(50);---WebService中调用的方法名:例如‘getMobileCodeInfo‘    SET @FunName = convert;   ---以下参数对应WebService中4个参数的[参数名]    DECLARE @location VARCHAR(200)      , @key VARCHAR(200)      , @coordsys VARCHAR(20);    SET @location = @log + , + @lat;    SET @key = bgxbgxbgxbgxbgxbgx;    SET @coordsys = gps;    SET @ServiceUrl = @UrlAddress + @FunName + ?key= + @key + &locations=        + @location + &coordsys= + @coordsys;                                 DECLARE @Object AS INT;    DECLARE @ResponseText AS VARCHAR(8000);                      EXEC sp_OACreate MSXML2.XMLHTTP, @Object OUT;    EXEC sp_OAMethod @Object, open, NULL, get, @ServiceUrl, false;    EXEC sp_OAMethod @Object, send;    EXEC sp_OAMethod @Object, responseText, @ResponseText OUTPUT;             SELECT  @result = StringValue    FROM    dbo.parseJSON(@ResponseText)    WHERE   NAME = locations;    EXEC sp_OADestroy @Object;
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3 创建逆地址解析存储过程

 

技术分享
CREATE   PROC p_et_gps_geocode(@log VARCHAR(20),@lat VARCHAR(20),@result VARCHAR(8000) OUTPUT)as DECLARE @ServiceUrl AS VARCHAR(1000); DECLARE @UrlAddress VARCHAR(500);---WebService地址:以http开头,结尾带斜杠,例如‘http://webservice.webxml.com.cn/WebServices/MobileCodeWS.asmx/‘ SET @UrlAddress = http://restapi.amap.com/v3/geocode/;DECLARE @FunName VARCHAR(50);---WebService中调用的方法名:例如‘getMobileCodeInfo‘SET @FunName = regeo;   ---以下参数对应WebService中4个参数的[参数名]DECLARE @output VARCHAR(20)  , @location VARCHAR(200)  , @key VARCHAR(200)  , @radius VARCHAR(10)  , @extensions VARCHAR(10);  exec p_et_gps_convert @log,@lat,@location outputSET @output = json;SET @key = bgxbgxbgxbgxbgxbgx;SET @radius = 1000;SET @extensions = base;SET @ServiceUrl= @UrlAddress + @FunName + ?output= + @output + &location=    + @location + &key= + @key + &radius= + @radius + &extensions=    + @extensions;                             DECLARE @Object AS INT;DECLARE @ResponseText AS VARCHAR(8000);                  EXEC sp_OACreate MSXML2.XMLHTTP, @Object OUT;EXEC sp_OAMethod @Object, open, NULL, get,@ServiceUrl, false;EXEC sp_OAMethod @Object, send;EXEC sp_OAMethod @Object, responseText, @ResponseText OUTPUT;     SET @result =  @ResponseText;     EXEC sp_OADestroy @Object;
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4 使用 之前创建的 解析函数查询就可以了.

 

DECLARE @info VARCHAR(max)EXEC p_et_gps_geocode 112.226135,35.57848,@info OUTPUTSELECT * FROM dbo.parseJSON( @info)

 

 

以上SQL SERVER 中 解决这些问题完全搞定. 

 

 

 

 

 

 

 

 

 








SQL SERVER 使用 高德地图逆地址解析