C#写的WebService读取文件到byte[]和读取文件内容到string,代码如下:
[WebMethod] public byte[] dowloadFile() { FileStreamreader = null; stringfilePath = "C:/Inetpub/wwwroot/ws/wrar38b2sc.exe";
try { reader = new FileStream(filePath, FileMode.Open,FileAccess.Read); byte[] bytes = new byte[reader.Length]; reader.Read(bytes, 0, Convert.ToInt32(reader.Length));
reader.Close(); return bytes; } catch(Exception ex) { throw ex; } finally { reader.Close(); } }
[WebMethod] public string ReadFileToString() {
StreamReader sr =File.OpenText("C:/Inetpub/wwwroot/ws/test.txt"); StringBuilder sb = new StringBuilder(); while(!sr.EndOfStream) { sb.Append(sr.ReadLine()); } sr.Close(); returnsb.ToString(); }
C++中调用WebService下载文件
//在工程中添加web引用,添加成功后,既可以编写代码如下
#include "stdafx.h" #include "WebService.h" #include
using namespace Service; using namespace std;
//调用返回值是字符串类型的WebService方法
void ReadFileToString() { CoInitialize(NULL);
HRESULT hr =S_OK; BSTR hiResult;
CService*myService = new CService; //代理对象,这个对象能从类视图中看到
//myService->SetUrl(L"http://192.168.1.158/ws/Service.asmx"); hr =myService->ReadFileToString(&hiResult);
_bstr_t bb =hiResult; char* c = bb;
if(FAILED(hr)) { printf("ReadFileToString调用失败\n"); } else { printf("ReadFileToString调用结果:%s\n",c); } SysFreeString(hiResult); delete myService; CoUninitialize(); }
//调用返回值是byte[]类型的WebService方法,并转成对应文件
void dowloadFile() {
//当下来的文件名称,因为WebService方法只返回了文件内容,没有文件名称
// char *fileName = "wrar38b2sc.exe";
CoInitialize(NULL);
HRESULT hr =S_OK; ATLSOAP_BLOB hiResult;
CService*myService = new CService; //代理对象,这个对象能从类视图中看到
//发布之后的WebSerivce地址,可以写,也可以不写,我在不写的情况下执行成功
//myService->SetUrl(L"http://192.168.1.158/ws/Service.asmx"); hr =myService->dowloadFile(&hiResult);
unsigned char* c= hiResult.data;
if(FAILED(hr)) { printf("dowloadFile调用失败\n"); } else { printf("dowloadFile调用结果:%s\n",c); } FILE*fp; fp = fopen(fileName, (const char*)("wb")); fwrite(hiResult.data, hiResult.size, 1,fp);
free(hiResult.data); fclose(fp); delete myService;
CoUninitialize();
//执行文件 WinExec(fileName, SW_SHOW); }