用java判斷資料庫表是否被建立

session=hibernatesessionfactory.getsession();

connection conn=session.connection();

//判斷資料庫中是否存在表risenet_file

databasemetadata dmd=conn.getmetadata();

/***databasemetadata.gettablesgettables(string

catalog,

string

schemapattern,

string

tablenamepattern,

string

types)

throws sqlexception

*引數一:表種類,這個我沒有找到是什麼意思,如果是null的話,則為全部

*引數二:為當前使用者的名字,如果不寫則為查詢所有使用者

*引數三:表名稱,可以使用正規表示式,

*引數四:表型別:主要包括:"table", "view", "system table", "global temporary", "local temporary", "alias", "synonym".

resultset 中取得的結果包括以下內容:

table_catstring => table catalog (may benull)

table_schemstring => table schema (may benull)

table_namestring => table name

table_typestring => table type. typical types are "table", "view", "system table", "global temporary", "local temporary", "alias", "synonym".

remarksstring => explanatory comment on the table

type_catstring => the types catalog (may benull)

type_schemstring => the types schema (may benull)

type_namestring => type name (may benull)

self_referencing_col_namestring => name of the designated "identifier" column of a typed table (may benull)

ref_generationstring => specifies how values in self_referencing_col_name are created. values are "system", "user", "derived". (may benull)

**///resultsetmetadata meta = rs.getmetadata();

//system.out.println(meta.getcolumncount());

// (int i = 1; i <= meta.getcolumncount(); i++)

while(rs.next())'");

// if(list!=null&&list.size()>0)

// session.delete("from risefile where fileguid=''");

// risefile.settitile("第n次測試");

// tx.commit();

// //刪除表

//operatetable(true);

}//else