基于微软企业库5.0连接oracle数据库进行企业级开发
很多人都习惯与用微软企业库5.0连接Sql Server进行企业级开发。
下面讲述微软企业库5.0连接oracle数据库的网上资料比较少,里面有很多细节点需要注意。
因此写一篇这样的技术博客共享给大家,目的希望大家少走弯路,希望能够减少程序员加班熬夜的数量。
技术架构: UI层(aspx)+BLL层+DAL层(微软企业库5.0)+数据库(oracle)。
(一)准备工作
1.Oracle数据库及开发包下载
先注册一个账户到Oracle官方网站(www.Oracle.com)
下载安装包2个安装包OracleXE112_Win32.zip(Oracle Express版),ODTwithODAC112030.zip(相当于.net开发连接Oracle数据库SDK)
1)ODTwithODAC112030.zip(ODAC 11.2 Release 4 (11.2.0.3.0) with Oracle Developer Tools for Visual Studio)
下载地址:http://www.oracle.com/technetwork/database/windows/downloads/index-101290.html
2)OracleXE112_Win32.zip(Oracle Database Express Edition 11g Release 2)
下载地址:http://www.oracle.com/technetwork/products/express-edition/downloads/index.html
2.微软企业库5.0下载
http://entlib.codeplex.com/
http://www.microsoft.com/en-us/download/details.aspx?id=15104
(二)应用
安装完以上程序包后打开VS2010->工具->连接到数据库
更改数据源
连接成功后
连接成功后操作数据库
1.配置数据库连接字符串
2.增删改查基本操作的关键代码
建立表sql脚本:
CREATE TABLE "C_SYSCODE" (
"CODEID" NUMBER(10,0) NOT NULL,
"CODENO" VARCHAR2(8 CHAR) NOT NULL,
"CODENAME" VARCHAR2(60 CHAR) NOT NULL,
"ISMX" VARCHAR2(20 BYTE) NOT NULL,
"PARENTCODENO" VARCHAR2(8 CHAR) NOT NULL,
"ZT" VARCHAR2(20 BYTE) NOT NULL)
STORAGE (
NEXT 1048576 )
/
CREATE UNIQUE INDEX "SYS_C007211"
ON "C_SYSCODE" (
"CODEID")
/
ALTER TABLE "C_SYSCODE" ADD (
CONSTRAINT "SYS_C007211"
PRIMARY KEY ( "CODEID")
USING INDEX "SYS_C007211"
ENABLE
VALIDATE )
/
1)增加
string strSql = "INSERT INTO C_SysCode(CodeID,CODENO,CODENAME,ISMX,ParentCodeNO,ZT)VALUES(:CodeID,:CODENO,:CODENAME,:ISMX,:ParentCodeNO,:ZT)";
DbCommand dbCommand = db.GetSqlStringCommand(strSql);
db.AddInParameter(dbCommand, "CodeID", DbType.Int32, model.CodeID);
db.AddInParameter(dbCommand, "CODENO", DbType.String, model.CODENO);
db.AddInParameter(dbCommand, "CODENAME", DbType.String, model.CODENAME);
db.AddInParameter(dbCommand, "ISMX", DbType.String, model.ISMX);
db.AddInParameter(dbCommand, "ParentCodeNO", DbType.String, model.ParentCodeNO);
db.AddInParameter(dbCommand, "ZT", DbType.String, model.ZT);
db.ExecuteNonQuery(dbCommand);
2)删除
string strSql = "DELETE FROM C_SysCode WHERE CodeID=:CodeID ";
DbCommand dbCommand = db.GetSqlStringCommand(strSql);
db.AddInParameter(dbCommand, "CodeID", DbType.String, CodeID);
db.ExecuteNonQuery(dbCommand);
3)修改
string strSql = "UPDATE C_SysCode SET CODENO=:CODENO,CODENAME=:CODENAME,ISMX=:ISMX,ParentCodeNO=:ParentCodeNO,ZT=:ZT WHERE CodeID=:CodeID";
DbCommand dbCommand = db.GetSqlStringCommand(strSql);
db.AddInParameter(dbCommand, "CODENO", DbType.String, model.CODENO);
db.AddInParameter(dbCommand, "CODENAME", DbType.String, model.CODENAME);
db.AddInParameter(dbCommand, "ISMX", DbType.String, model.ISMX);
db.AddInParameter(dbCommand, "ParentCodeNO", DbType.String, model.ParentCodeNO);
db.AddInParameter(dbCommand, "ZT", DbType.String, model.ZT);
db.AddInParameter(dbCommand, "CodeID", DbType.Int16, model.CodeID);
db.ExecuteNonQuery(dbCommand);
4)查询
StringBuilder strSql = new StringBuilder();
strSql.Append("SELECT CodeID,CODENO,CODENAME,ISMX,ParentCodeNO,ZT ");
strSql.Append(" FROM C_SysCode ");
strSql.Append(" WHERE CodeID=:CodeID ");
DbCommand dbCommand = db.GetSqlStringCommand(strSql.ToString());
db.AddInParameter(dbCommand, "CodeID", DbType.String, CodeID);
SFS.Model.C_SysCode model = null;
using (IDataReader dataReader = db.ExecuteReader(dbCommand))
{
if (dataReader.Read())
{
...
}
}
return model;
注意细节点:
1)Sql Server很多函数在oracle不能用。
例如:ISNULL函数在oracle中不能用。
2)传递参数不能用“@”要用“:”
例如:
Sql Server中写成
SELECT * FROM C_SysCode where ParentCodeNO=@ParentCodeNO
Oracle要写成
SELECT * FROM C_SysCode where ParentCodeNO=:ParentCodeNO
3)注意参数传递顺序
4)注意Sql语法的差别
例如:不能用“[]”。
Sql Server中写成
SELECT * FROM [C_SysCode]
Oracle要写成
SELECT * FROM C_SysCode
(三)运行效果