Java 为什么在设置参数时我的查询没有执行

我有一个java文件，它与后端数据库交互并为我检索行

java与db交互的代码部分如下：

 try {
        con = DBconnection.getConnection();
        System.out.println("in get_camplist");
        String brand = request.getParameter("brand_id");
        System.out.println(brand);
        int bid = Integer.parseInt(brand);
        System.out.println(bid);
        String start_date = request.getParameter("s_date");
        String end_date = request.getParameter("e_date");
        System.out.println(start_date);

        prepStmt = con.prepareStatement(dbquery.getContentTable);
        prepStmt.setInt(1, bid);
        prepStmt.setString(2, start_date);
        prepStmt.setString(3, end_date);
        rs = prepStmt.executeQuery();

        tblist = new ArrayList<Cont_foc_tab>();
        Cont_foc_tab tb = null;
        while (rs.next()) {
            tb = new Cont_foc_tab(rs.getString("video_Name"), rs.getLong("views"), rs.getLong("likes"), rs.getLong("comments"), rs.getLong("shares"), rs.getLong("engagement"));
            tblist.add(tb);
        }

dbquery.getContentTable查询如下

当我尝试通过在sql server management studio中传递相同的值来执行相同的查询时，它工作正常并返回行当我尝试动态传递参数时，它不返回任何行

sql management studio中的sql查询

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试着用这样的方式来确定“yyyy/mm/dd”的日期。数据类型为date，比较为string

我还建议您使用log4jdbcconnectionspy库，它将帮助您调试您实际编写的查询。 可以像这样包装连接对象

con = new net.sf.log4jdbc.ConnectionSpy(con);

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您是否尝试过使用命名参数，例如WHERE Date=@givenDate？？也许你的问题只是提供的参数不在正确的序列中为什么你要使用setString作为日期？我确信参数在正确的序列中我会尝试使用@givenDate，尽管我从前端获取的日期是字符串@Ic@Desolator你能给我一个命名参数的例子吗？我试着这么做类似日期s_Date；s_日期=日期格式化程序1.parsestart_日期；java.sql.Date sqlS\u Date；sqlS_Date=new java.sql.Dates_Date.getTime；prepsmt=con.prepareStatementdbquery.getContentTable；prepStmt.setInt1，投标书；prepsmt.setDate2，sqlS_日期；它仍然返回一个空的list@shijohari我还得到一个名为com.microsoft.sqlserver.jdbc.SQLServerException的异常：索引3超出范围。

select  a.vidid as video_id,b.Vid_Name as video_Name,b.Vid_URL as url, 
         a.Views as views,a.likes as likes,a.comments as comments,a.shares as shares,a.Engagement as engagement 
         from ((select VidID as vidid,SUM(Yt_Views) as Views,SUM(Yt_Likes) as likes, 
         SUM(Yt_Comments) as comments,SUM(Yt_Shares) as shares,round(((cast((SUM(Yt_Likes) + SUM(Yt_Shares) + SUM(Yt_Comments)) as float)/SUM(Yt_Views))*100),2) as Engagement 
         from  SocMet_VidMetrics_Fact 
         where VidID in (select distinct VidID from SocMet_VidMetrics_Fact where ProdID= 20 ) and  
         (DateKey>=(select DateKey from DimDate where Date='01/01/2012' ) 
         and DateKey<=(select DateKey from DimDate where Date='07/31/2014' )) 
         group by VidID) a left join SocMet_VidDetails_Dim b on a.VidID=b.VidID)
         where a.vidid in ('-wK47AqI7P0','_8PdkNMNrBo','cjHJCF0seMQ','7aCUq-cPGbQ','5hSUbGStxhY','HPXHV6iHzIk','BLbxRvjDzd0','kvD0h-Ce52c','CcWnfduAS_E','PeHbEGKyBiY','A5HKiUe4KaU','bGcoQN-crzg','BMGMi2Webd0','YSVL4FvFhvw','vZgIbWTEoMA','OFCnDURIPQg');

con = new net.sf.log4jdbc.ConnectionSpy(con);