我是JSP新手，简单的JSP写也差不多了。但是现在碰到一个头痛的问题，就是在提交大于2000字的文章时，ORACLE数据库就出错了。“文章内容” 我用的是LONG的类型。
提交小于2000字的使用正常的代码：
| <%@ include file="inc/conn.jsp"%> <%if ((String) session.getAttribute("adminlogin")=="yes"){%> <% request.setCharacterEncoding("GB2312"); //文章名称 String art_name = request.getParameter("art_name"); //文章栏目ID String art_class_id = request.getParameter("art_class_id"); //是否固顶 String art_top = request.getParameter("art_top"); if(art_top==null||art_top==""){ art_top = "0"; } //文章内容 String content = request.getParameter("conten"); String sql="insert into szgs_art(art_id,art_class_id,art_name,art_conts,art_top,art_ow) values (art_id.nextval,'"+art_class_id+"','"+art_name+"','"+content+"','"+art_top+"',1)"; stmt.executeQuery(sql); out.print("<script language='javascript'>"); out.print("alert('文章增加成功!');"); out.print("location.href='gsdt_add.jsp';"); out.print("</script>"); stmt.close(); conn.close(); %> <%}else{%><%}%> |
后来在网上查了半天也没有好的解决办法。倒是找到了一段我不会用的：
| <% DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver()); Connection conn = DriverManager.getConnection("java:oracle:thin:@srv:1521:srv","yp","yp"); String sql= "INSERT INTO speedfaw.news VALUES(?,?)"; PreparedStatement pstmt=conn.prepareStatement(sql); String title=request.getParameter("title"); String content=request.getParameter("content"); String temp = new String(content.getBytes("ISO8859-1"),"GBK"); byte[] pic = temp.getBytes("GBK"); ByteArrayInputStream baisss = new ByteArrayInputStream(pic); InputStreamReader bais = new InputStreamReader(baisss,"GBK"); pstmt.setString(1,title); pstmt.setCharacterStream(2,bais,pic.length); pstmt.execute(); pstmt.close(); conn.close(); %> |
最后能成功添加新数据的代码为：
LOB类型我也用了还是用不起来，最后还是用LONG了，增加文章时用：
| <% DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver()); Connection conn = DriverManager.getConnection("java:oracle:thin:@srv:1521:srv","yp","yp"); String sql= "INSERT INTO speedfaw.news VALUES(?,?)"; PreparedStatement pstmt=conn.prepareStatement(sql); String title=request.getParameter("title"); String content=request.getParameter("content"); String temp = new String(content.getBytes("ISO8859-1"),"GBK"); byte[] pic = temp.getBytes("GBK"); ByteArrayInputStream baisss = new ByteArrayInputStream(pic); InputStreamReader bais = new InputStreamReader(baisss,"GBK"); pstmt.setString(1,title); pstmt.setCharacterStream(2,bais,pic.length); pstmt.execute(); pstmt.close(); conn.close(); %> |
使用成功
