BerkeleyDBjava的简单使用(二)
id main(String[] args) {
Environment myDbEnvironment = null;
Database myDatabase = null;
try {
EnvironmentConfig envConfig = new EnvironmentConfig();// 配置环境变量
envConfig.setAllowCreate(true);
File f=new File(dbEnv);
if(!f.exists()){
f.mkdirs();
}
myDbEnvironment = new Environment(f, envConfig);
} catch (DatabaseException dbe) {
}
try {
DatabaseConfig dbConfig = new DatabaseConfig();// 打开数据库
dbConfig.setAllowCreate(true);
myDatabase = myDbEnvironment.openDatabase(null, "myDatabase",
dbConfig);
} catch (DatabaseException dbe2) {
}
//存储数据
String aKey = "key4";
String aData = "data";
try {
DatabaseEntry theKey = new DatabaseEntry(aKey.getBytes("UTF-8"));
DatabaseEntry theData = new DatabaseEntry(aData.getBytes("UTF-8"));
myDatabase.put(null, theKey, theData);
// myDbEnvironment.sync();
System.out.println(myDatabase.count());
} catch (Exception e) {
}
// 关闭,应该会自动提交
try {
if (myDatabase != null) {
myDatabase.close();
}
if (myDbEnvironment != null) {
myDbEnvironment.cleanLog(); // ?在关闭环境前清理下日志
myDbEnvironment.close();
}
} catch (DatabaseException dbe) {
}
}
}