python 解析 json

civilvar

　　


#!/usr/bin/env python
import sys;
import simplejson as json;
def GetJsonVal(strJsonFile, lsKey):
try:
if len(lsKey) <= 0:
return [-1, ''];
mapJson = json.load(file(strJsonFile));
mapVal = mapJson;
for strKey in lsKey:
if not mapVal.has_key(strKey):
return [-2, ''];
else:
mapVal = mapVal[strKey];
return [0, mapVal];           
except:
return [-10, ''];
def usage():
strExe = sys.argv[0];
print("Usage: %s json_file json_path\nExample:%s  /a.json a/b/c" %(strExe, strExe))
if "__main__" == __name__:
strJson = sys.argv[1];
lsKey = sys.argv[2:];
lsRet = GetJsonVal(strJson, lsKey);
if 0 != lsRet[0]:
print("get key:%s failed! error code:%s" %('/'.join(lsKey), lsRet[0]));
sys.exit(lsRet[0]);
else:
print(lsRet[1]);
sys.exit(0);