為什么80%的碼農都做不了架構師？>>> ??

#include <iostream> #include <leveldb/db.h> #include <leveldb/write_batch.h> //原子更新操作 #include <assert.h>using namespace std;? using namespace leveldb;int main(int argc,char * argv[])? {?leveldb::DB* db;?leveldb::Options op;?leveldb::Status s ;?op.create_if_missing = true;?//op.error_if_exists = true;//string dbpath = "/tmp/testdb";?string dbpath = "/data/osd.1/current/omap";?s = leveldb::DB::Open(op, dbpath, &db);?assert(s.ok());?cout<<"open db succ"<<std::endl;?/*std::string key = "100001";?std::string val = "this is 100001's value";?std::string retVal;?s = db->Put(leveldb::WriteOptions(), key, val);s = db->Get(leveldb::ReadOptions(), key, &retVal);s = db->Delete(leveldb::WriteOptions(), key);cout<<retVal<<std::endl; */leveldb::Iterator* it = db->NewIterator( leveldb::ReadOptions() );?std::string mkey,mval;for ( it->SeekToFirst(); it->Valid(); it->Next() ){?mkey = it->key().ToString();mval = it->value().ToString();cout << "key=" << mkey <<", val=" << mval <<std::endl;?//if ( mkey.find("s3") != string::npos )//cout << "------------find " << mkey << "----------" << mval << std::endl;}assert(it->status().ok()); //checkdelete it;delete db;cout<<"over!"<<std::endl;return 0;? } rm ./ldbtest g++ -g ldbtest.cpp -o ldbtest -L. -I./include -lpthread -lleveldb ./ldbtest

參考：

1. ?http://blog.csdn.net/hzqhbc/article/details/9367327

2. ?http://blog.csdn.net/cywosp/article/details/20746879

轉載于:https://my.oschina.net/guyson/blog/325003

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