gsoap java端调用c函数出错

[ceng122]

gsoap web 调用

java端调用gsoap 函数的时候：
函数名：int ns2__uploadTmsKdmInfo(std::string token,
std::string file,
std::string hash,
std::string &ret);

提示错误：
Breakpoint 1, ns2__uploadTmsKdmInfo (soapTms=0xbffe7320, token=Traceback (most recent call last):
File "/usr/share/gdb/python/libstdcxx/v6/printers.py", line 469, in to_string
return self.val['_M_dataplus']['_M_p'].string (encoding, length = len)
RuntimeError: Error reading string from inferior: 输入/输出错误
, file=Traceback (most recent call last):
File "/usr/share/gdb/python/libstdcxx/v6/printers.py", line 469, in to_string
return self.val['_M_dataplus']['_M_p'].string (encoding, length = len)
RuntimeError: Error reading string from inferior: 输入/输出错误
, hash=Traceback (most recent call last):
File "/usr/share/gdb/python/libstdcxx/v6/printers.py", line 469, in to_string
return self.val['_M_dataplus']['_M_p'].string (encoding, length = len)
RuntimeError: Error reading string from inferior: 输入/输出错误
, ret="") at src/webservice/soapFunction.cpp:2189
2189 std::string filename = "";


请问这错误怎么解决啊？
谢谢