由于初次尝试用c++写个简单的爬虫系统，不免用到正则，正则有多行匹配等特性，以前一直用php开发pcre_match加上正则修正符m多行，i忽略大小写 s.代表任意字符，不要太方便，所以在使用cpp的时候遇到了困惑。
实际上pcre匹配数据是多次去匹配的，
我匹配到一个数据，然后对源数据进行偏移，然后匹配下一个，这样子，知道最后一个
#include "pcre.h"
#include
#include
#include
#include
#include
#define OVECCOUNT 256 using namespace std; int tpcre(); int tmysql(); int main(int argc, char ** argv) { tpcre(); return 0; } int tmysql(){ return 0; } int tpcre(){ char pText[1024] = "\"21,537511285427,50005701,,shopsearch,1,shopcon,2950270077,,\" href=\"//detail.tmall.com/item.htmid=537511285427&rn=54eb0efc1a7a49f5b93ed2051aa4fe9c&abbucket=0\" target=\"_blank\" data-gold-url=\"/inshopse\" href=\"//detail.tmall.com/item.htmid=537511285421&rn=54eb0efc1a7a49f5b93ed2051aa4fe9c&abbucket=0\"href=\"//detail.tmall.com/item.htmid=537511285422&rn=54eb0efc1a7a49f5b93ed2051aa4fe9c&abbucket=0\"href=\"//detail.tmall.com/item.htmid=537511285423&rn=54eb0efc1a7a49f5b93ed2051aa4fe9c&abbucket=0\"href=\"//detail.tmall.com/item.htmid=537511285424&rn=54eb0efc1a7a49f5b93ed2051aa4fe9c&abbucket=0\" "; /* string filename = "/Users/kang/Library/Developer/Xcode/DerivedData/TmailSpider-batmyukengwdwjcsejwqossttbhu/Build/Products/Debug/2.txt"; fstream fp; fp.open(filename); char buf[256]; string html; while (!fp.eof()) { fp.read(buf, 200); html.append(buf); } fp.close(); char *pText = (char*)html.c_str(); */ std::cout << pText; //const char * pPattern = "(\\d+)\\w+"; //const char *pPattern="href=\\\"(//detail.tmall.com/item.htm[^\\]+)\\"; //const char * pPattern = "(//detail.tmall.com/item.htm[^\\\\]+)"; const char * pPattern = "(//detail.tmall.com/item.htm\\id=\\d+)"; const char * pErrMsg = NULL; pcre * pPcre = NULL; int nOffset = -1; //PCRE_MULTILINE|PCRE_UTF8|PCRE_NO_AUTO_CAPTURE //pPcre = pcre_compile(pPattern, PCRE_DOTALL|PCRE_CASELESS|PCRE_MULTILINE, &pErrMsg, &nOffset, NULL); pPcre = pcre_compile(pPattern, PCRE_DOTALL|PCRE_CASELESS|PCRE_MULTILINE, &pErrMsg, &nOffset, NULL); if(pPcre == NULL){ printf("pcre match error\n"); return 1; } int ovector[OVECCOUNT]; int matchFlag; int exec_offset = 0; int count = 0; do{ matchFlag = (int)pcre_exec(pPcre, NULL, pText, (int)strlen(pText),exec_offset,0, ovector, OVECCOUNT); if(matchFlag > 0){ ++count; printf("\nOK, has matched ...\n\n"); for(int i=0;i 0); cout << "count="<