用Python实现Excel导出Json文件

python版本:3.3

xlrd版本:0.9.2

编辑工具:Notepad++

环境:win7

 

xlrd安装:命令行下进入xlrd所在目录,输入

python setup.py install



excel格式

id name age
1 zzz 12
2 呵呵 50

Json输出格式为对象结构,文件编码UTF-8

{

    "1": {

          "name": "zzz",

          "age": "12"

      },

     "2": {

           "name": "呵呵",

           "age": "50"

      }

}

python代码

# coding=utf-8
# 将excel解析成json文件
# last date: 2013-10-28 version 1.0

import os
import sys
import codecs
import xlrd #http://pypi.python.org/pypi/xlrd

global PRINT_LEVEL# 0:no log; 1: warning; 2: prompt; 3: all
PRINT_LEVEL = 1

def getStrFromObj(obj):
	if type(obj) == float:
		return str(int(obj))
	else:
		return obj
		
def getEcelColStr(col):
	if col <= 26:
		return chr(ord('A') + col - 1)
	elif col <= 52:
		return 'A'+chr(ord('A') + col - 26 - 1)
	elif col <= 78:
		return 'A'+chr(ord('A') + col - 26 - 1)
	else:
		return str(col)

def praseRowData(outputFile, fieldName, rowData, row):
	ncols = len(rowData)
	cellValue = getStrFromObj(rowData[0])
	outputFile.write('\t\"' + cellValue + '\": {\n')
	if PRINT_LEVEL >= 3:
		print ('id: ' + cellValue)
	
	for col in range(ncols-1):
		if col != 0:
			outputFile.write(',\n')
		if PRINT_LEVEL >= 3:
			print ('col: ' + str(col))
		cellValue = getStrFromObj(rowData[col+1])
		if PRINT_LEVEL >= 1:
			if len(cellValue) == 0:
				colStr = getEcelColStr(col+2)
				print ('Warning: the value in row %d col %s is null!' % (row+2, colStr))
		field = fieldName[col+1]
		lineStr = '\"' + field + '\": \"' + cellValue + '\"'
		if PRINT_LEVEL >= 3:
			print (lineStr)
		outputFile.write('\t\t' + lineStr)
		
	outputFile.write('\n\t}')
		

def main():
	if len(sys.argv) != 2:
		print ('argv count != 2, program exit')
		print ('Usage: a.py excelFileName')
		exit(0)

	if PRINT_LEVEL >= 2:
		print ('****************')
		print ('excel to json')
		print ('****************')

	# prase file name
	excelFileName = sys.argv[1]
	if PRINT_LEVEL >= 2:
		print ('Excel File Name: ' + excelFileName)
	tmpStr = excelFileName.split('.')[0]
	jsonFileName = 'Static' + tmpStr[0:1].upper() + tmpStr[1:] + '.json'
	if PRINT_LEVEL >= 2:
		print ('Json File Name: ' + jsonFileName)
		print ('****************')
	if os.path.exists(excelFileName) == False:
		if PRINT_LEVEL >= 1:
			print ('Warning: the excel file %s dose not exsit!' % (excelFileName))
		exit(0)

	# open file
	workbook = xlrd.open_workbook(excelFileName)
	outputFile = codecs.open(jsonFileName, 'w', 'utf-8')
	
	# prase
	if PRINT_LEVEL >= 2:
		print ('Prase ...')
	firstLine = True
	for sheet in workbook.sheets():
		if sheet.nrows != 0:
			# prase table data begin
			if firstLine:
				firstLine = False
			else:
				outputFile.write(u'\n')
			outputFile.write(u'{\n')
				
			# get field
			fieldName = sheet.row_values(0)
			
			for row in range(sheet.nrows - 1):
				if row != 0:
					outputFile.write(',\n')
				praseRowData(outputFile, fieldName, sheet.row_values(row + 1), row)
			
			# prase table data end
			outputFile.write(u'\n}')
	
	# close file
	outputFile.close()
	if PRINT_LEVEL >= 2:
		print ('****************')
		print ('Excel to Json Finished!')
		print ('****************')
	
main()


 

遇到的问题:

1. print :3.3版本和以前不太一样貌似,print ("xxx"),一开始出现 错误 SyntaxError: invalid syntax,是因为没有添加 ()

2. 报错:IndentationError: unindent does not match any outer indentation level,是因为代码的缩进问题,对于python格式很重要。(参考

3. python类型转换:str(x) chr(x) ord(x) (参考)(参考2)

4. 大小写转换:s.upper()s.lower()参考

5. 判断文件是否存在os.path.exists(path) (参考)

6. 全局变量:(参考)

global aaa

aaa = 1

7. if语句:注意elif和后面的冒号(参考)

if ...:

   ...

elif ...:

   ...

else:

   ...

8. 字符截取:str.split('xxx')   str[1:4] (参考)

9. python文件编码格式:utf-8(参考)

在文件起始位置添加:# coding=utf-8

10. excel解析:有了xlrd解析excel很容易,没啥需要注意的(参考1)(参考2)(参考3)

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