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37 lines
975 B
37 lines
975 B
#include "leveldb/db.h"
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#include "leveldb/env.h" // 添加对 Env 类的完整定义
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#include <iostream>
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using namespace std;
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using namespace leveldb;
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int main() {
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DB* db = nullptr;
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Options op;
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op.create_if_missing = true;
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// 创建日志文件并将其关联到 Options 的 info_log
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Logger* logger;
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Status log_status = Env::Default()->NewLogger("leveldb_log.txt", &logger);
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if (log_status.ok()) {
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op.info_log = logger; // 正确设置 Logger 指针
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} else {
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cerr << "Failed to create logger: " << log_status.ToString() << endl;
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}
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Status status = DB::Open(op, "testWAL", &db);
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assert(status.ok());
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db->Put(WriteOptions(), "001", "leveldb");
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string s;
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db->Get(ReadOptions(), "001", &s);
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cout<<s<<endl;
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db->Put(WriteOptions(), "002", "world");
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string s1;
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db->Delete(WriteOptions(), "002");
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db->Get(ReadOptions(), "002", &s1);
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cout<<s1<<endl;
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delete db;
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return 0;
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}
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