Std::vector<char> *buffer 怎么装换为 char* 的?

Cocos2d-x
#1

std::vector *buffer

我不熟悉 C++ ，这个怎么得到 char* nString 的

因为 CCHttpRequest 返回（ getResponseData）的就是 std::vector *buffer 呢

我怎么获得字符串呢 ?

谢谢 哈哈，很浅的问题，网上没找到解决理法 …

#2

std::stringstream oss;
for(unsigned int i=0;i < buffer->size();i++){
oss<<(buffer);
}
string temp=oss.str();
const char * buf=temp.c_str();
我是这么着做的，哈哈*

#3

我也是新手，之前找到一个解决方法
// 用vector来存储response数据缓存
std::vector *buffer = response->getResponseData();
CCLog(“Http Test, dump data: “);
//把vector转换成std::string
std::string buf(buffer->begin(),buffer->end());
//buf.c_str()把std::string转换成string;
CCLog(”%s”,buf.c_str());

#4

你的responseString开辟了足够大的内存空间吗？

试试这样：

char* responseString = new char;
std::copy(buffer->begin(), buffer->end(), responseString);

#5

好的，谢谢，今天回家再试试去

#6

知道怎么做了，就是这样

std::copy(buffer->begin(), buffer->end(), responseString);

但是，这样取得值后，能打印出值来，XCode 报错如下 …

thread #6: tid = 0x2503, 0x03c66cee libLLVMContainer.dylibllvm::BasicBlock::getTerminator() + 30, stop reason = EXC_BAD_ACCESS (code=1, address=0x45505958) frame #0: 0x03c66cee libLLVMContainer.dylibllvm::BasicBlock::getTerminator() + 30
frame #1: 0x03bd8d6f libLLVMContainer.dylibunsigned int llvm::DFSPass<llvm::GraphTraits<llvm::BasicBlock*> >(llvm::DominatorTreeBase<llvm::GraphTraits<llvm::BasicBlock*>::NodeType>&, llvm::GraphTraits<llvm::BasicBlock*>::NodeType*, unsigned int) + 831 frame #2: 0x03bd4ead libLLVMContainer.dylibvoid llvm::Calculate<llvm::Function, llvm::BasicBlock*>(llvm::DominatorTreeBase<llvm::GraphTraitsllvm::BasicBlock*::NodeType>&, llvm::Function&) + 573
frame #3: 0x0395f5dd libLLVMContainer.dylibvoid llvm::DominatorTreeBase<llvm::BasicBlock>::recalculate<llvm::Function>(llvm::Function&) + 525 frame #4: 0x03c8d2eb libLLVMContainer.dylibllvm::DominatorTree::runOnFunction(llvm::Function&) + 27
frame #5: 0x03ce267c libLLVMContainer.dylibllvm::FPPassManager::runOnFunction(llvm::Function&) + 284 frame #6: 0x03ce2036 libLLVMContainer.dylibllvm::FunctionPassManagerImpl::run(llvm::Function&) + 198
frame #7: 0x03ce1f3a libLLVMContainer.dylibllvm::FunctionPassManager::run(llvm::Function&) + 122 frame #8: 0x11f92ef1 libGLVMPlugin.dylibcvmOptimizeModularFunction + 55
frame #9: 0x11fd5cb4 libGLVMPlugin.dylibglvmBuildFPTransformFunction + 23508 frame #10: 0x11fe36da libGLVMPlugin.dylibcvmsModularBuilder + 166
frame #11: 0x0363d78d libCoreVMClient.dylibcvmsCompBuildModularFunction + 179 frame #12: 0x036406bf libCoreVMClient.dylibcvmsServerBuildModularFunction + 245
frame #13: 0x0363ebcf libCoreVMClient.dylibCVMSBuildModularFunction + 112 frame #14: 0x0363578f libCVMSPluginSupport.dylibcvm_deferred_build_modular(void*) + 247
frame #15: 0x036355e0 libCVMSPluginSupport.dylibcvmDoWork + 57 frame #16: 0x97ed65b7 libsystem_c.dylib_pthread_start + 344

#7

不错，我用你的了

#8

最简单的版本，无需任何内存拷贝：

char const* sz = &(*buffer->begin());

#9

Cocos2d 开发的同学们可以考虑吧HttpRequest统一出一个版本支持Lua 或 JS的。这个还是比较常用的类，免得大家都自己写一遍。

#10

不用，哪有那么费劲，这样就可以了 std::string str(buffer->begin(),buffer->end());

但是，我不知道怎么显示出中文，我显示的中文是乱码。。。。。:6: :6: :6: :6: :6: :6: :6: