postgis的shp2pgsql使用

先来段python代码：

import os
from cStringIO import StringIO

from proj import db_oper

shape_base_dir = r'C:\Users\user_aaa\Desktop\compress\\'
des_file_dir = 'D:\shp_sql\\'

gis_frame = '4326'
gis_char = 'CP874'
shp_file = ''



file_name_dic = {}
for files in os.walk(shape_base_dir):
 #os.walk返回一个元组：files[0]——根目录
 #files[1]——根目录包含的次级目录
 #files[2]——包含的文件
 file_name_set = {}
 if len(files[2]) > 0:
 #print files[0].split('\\')
     print files[2]
     for file_p in files[2]:
         file_name_set[file_p[0:-4]] = ''
     for file_p in file_name_set.keys():
         if file_p in file_name_dic.keys():
             #-a  追加 -c 新建
             #-D  dump方式，处理大数据
             #-s  坐标
             #-w  字符集
             shp_file = '"'+files[0]+'"'+'\\'+file_p
             le_dir+'"'+files[0].split('\\')[-1]+file_p+'"'+'.sql')
         else :
             file_name_dic[file_p] = ''
             shp_file = '"'+files[0]+'"'+'\\'+file_p
             os.system('shp2pgsql -c -D -s '+gis_frame+' -W '+gis_char+' '+shp_file+' org_'+file_p+' >'+des_file_dir+'"'+files[0].split('\\')[-1]+file_p+'"'+'.sql')

 
 
 
 
 
  
  
  
  



 
 
 
 
 
  
  
  
  


 
 
 
 
 
  
  
  
  



 
 
 
 
 
  
  
  
  

再来postgis文档中，对shp2pgsql的解释：

(c|a|d|p) These are mutually exclusive options:
    -c Creates a new table and populates it from the shapefile. This is the default mode.
    -a Appends data from the Shape file into the database table. Note that to use this option to load multiple files, the files must have the same attributes and same data types.
    -d Drops the database table before creating a new table with the data in the Shape file.
    -p Only produces the table creation SQL code, without adding any actual data. This can be used if you need to completely separate the table creation and data loading steps.
-? Display help screen.
-D Use the PostgreSQL "dump" format for the output data. This can be combined with -a, -c and -d. It is much faster to load
than the default "insert" SQL format. Use this for very large data sets.
-s <SRID> Creates and populates the geometry tables with the specified SRID.
-k Keep identifiers’ case (column, schema and attributes). Note that attributes in Shapefile are all UPPERCASE.
-i Coerce all integers to standard 32-bit integers, do not create 64-bit bigints, even if the DBF header signature appears to warrant
it.
-I Create a GiST index on the geometry column.
-w Output WKT format, for use with older (0.x) versions of PostGIS. Note that this will introduce coordinate drifts and will
drop M values from shapefiles.
-W <encoding> Specify encoding of the input data (dbf file). When used, all attributes of the dbf are converted from the
specified encoding to UTF8. The resulting SQL output will contain a SET CLIENT_ENCODING to UTF8 command,
so that the backend will be able to reconvert from UTF8 to whatever encoding the database is configured to use internally.
-N <policy> NULL geometries handling policy (insert*,skip,abort)
-n -n Only import DBF file. If your data has no corresponding shapefile, it will automatically switch to this mode and load just
the dbf. So setting this flag is only needed if you have a full shapefile set, and you only want the attribute data and no
geometry.
-G Use geography type instead of geometry (requires lon/lat data) in WGS84 long lat (SRID=4326)