JAVA中使用JDBC调用MS SQL存储过程
背景：
SQL SERVER2005 JAVA JDK1.4
WEBLOGIC测试环境
当进行一些复杂点的查询时，不愿意使用在java代码中拼复杂的语句，看起来很繁琐。用存储过程是一个不错的解决途径，可以使得代码简洁很多。
SQL PROCEDURE:
JAVA Code：
/**
* 进行查询
* @return List
*/
public List getVoteStat(String siteId) {
Session session = null;
List lstResult = new ArrayList();
try {
session = this.getSession();
Connection conn = session.connection();
String sql = "{ call SP_MESSAGE_VOTE_STAT(?) }";
PreparedStatement psmt = conn.prepareCall(sql);
psmt.setString(1, siteId);
//执行视图V_Message_stat
ResultSet rs = psmt.executeQuery();
while (rs.next()) {
Properties prop = new Properties();
//设置变量 带回到前台
prop.setProperty("MESSAGE_CATEGORY", rs.getString("MESSAGE_CATEGORY"));
prop.setProperty("CATEGORY_ID", rs.getString("CATEGORY_ID"));
prop.setProperty("VOTE_NO", rs.getString("vote_no"));
prop.setProperty("VOTE_YES", rs.getString("vote_yes"));
prop.setProperty("SATIFY_ZERO_PERCENT", rs.getString("satify_zero_percent"));
prop.setProperty("SATIFY_ONE_PERCENT", rs.getString("satify_one_percent"));
prop.setProperty("SATIFY_TWO_PERCENT", rs.getString("satify_two_percent"));
prop.setProperty("SATIFY_ZERO", rs.getString("satify_zero"));
prop.setProperty("SATIFY_ONE", rs.getString("satify_one"));
prop.setProperty("SATIFY_TWO", rs.getString("satify_two"));
// System.out.println(rs.getString(0));
lstResult.add(prop);
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
try {
session.close();
} catch (HibernateException ex) {
ex.printStackTrace();
}
session = null;
}
return lstResult;
}
ALTER PROCEDURE [ezoffice].[SP_MESSAGE_VOTE_STAT]
(
--参数
@v_site_id varchar(30)
)
AS
declare @e_sql nvarchar(2000);
--拼凑SQL语句进行查询
set @e_sql ='SELECT (select top 1 cg.category_title from cms_messagecategory cg
where cg.category_id=TEMP.CATEGORY_ID) as MESSAGE_CATEGORY,CATEGORY_ID, SUM(vote_no) AS vote_no, SUM(vote_yes) AS vote_yes,
CASE SUM(vote_yes) WHEN 0 THEN 0 ELSE CAST(CAST(SUM(manyi) AS decimal(9, 2))/ SUM(vote_yes) AS decimal(9, 2))*100 END AS satify_zero_percent,
CASE SUM(vote_yes) WHEN 0 THEN 0 ELSE CAST(CAST(SUM(yibanmanyi) AS decimal(9, 2))/ SUM(vote_yes) AS decimal(9, 2))*100 END AS satify_one_percent,
CASE SUM(vote_yes) WHEN 0 THEN 0 ELSE CAST(CAST(SUM(bumanyi) AS decimal(9, 2))/ SUM(vote_yes) AS decimal(9, 2))*100 END AS satify_two_percent,
SUM(manyi) AS satify_zero, SUM(yibanmanyi) AS satify_one, SUM(bumanyi) AS satify_two
FROM';
set @e_sql=@e_sql+'(SELECT CASE ISNULL(msg.VOTE_STATUS, ''0'') WHEN ''0'' THEN 1 ELSE 0 END AS vote_no, CASE ISNULL(msg.VOTE_STATUS, ''0'')
WHEN ''1'' THEN 1 ELSE 0 END AS vote_yes, ISNULL(VOTE_RESULT, ''-1'') AS VOTE_RESULT, SITE_ID, CATEGORY_ID,
CASE isnull(msg.vote_result, ''-1'') WHEN ''0'' THEN 1 ELSE 0 END AS manyi,
CASE isnull(msg.vote_result, ''-1'') WHEN ''1'' THEN 1 ELSE 0 END AS yibanmanyi,
CASE isnull(msg.vote_result, ''-1'') WHEN ''2'' THEN 1 ELSE 0 END AS bumanyi
FROM ezoffice.CMS_MESSAGE AS msg
WHERE 1=1';
if @v_site_id is not null begin SET @e_sql=@e_sql+' and msg.site_id='+ @v_site_id; end
set @e_sql=@e_sql+' ) AS TEMP ';
set @e_sql=@e_sql+' GROUP BY CATEGORY_ID ';
execute (@e_sql);