网上常见的例子总是将文本文件上传至数据库的方法。今天在做文档管理相关系统时，需要将网页上的文本输入框(textarea或input)中的内容，上传到ORACLE数据库的CLOB字段中去。在网上找了好长时间，总算有所收获，现将方法总结如下，其中部分代码为其它网友的源码：

一、上传

private void updateContent(Connection conn, Information info) throws Exception {

PreparedStatement pstmt = conn.prepareStatement(

"SELECT CONTENT FROM INFO_CONTENT WHERE ID=? FOR UPDATE");

pstmt.setInt(1, info.getId());

ResultSet rs = pstmt.executeQuery();

/* 取出此CLOB对象 */

if (rs.next()) {

//Weblogic这样写

OracleThinClob clob = (OracleThinClob) rs.getClob(1);

//其它服务器这样写

//oracle.sql.CLOB clob = (oracle.sql.CLOB) rs.getClob(1);

/* 向CLOB对象中写入数据 */

/*

//保存文件

//BufferedWriter out = new BufferedWriter(clob.getCharacterOutputStream());

//BufferedReader in = new BufferedReader(new FileReader(filename));

*/

//保存字符串

Writer out = clob.getCharacterOutputStream();

out.write(info.getContent());

out.flush();

out.close();

rs.close();

pstmt.close();

}

}

二、在jsp中显示

public Information getInformation(int id) throws Exception {

Information base = new Information();

Connection conn = null;

try {

conn = DBConnect.GainDBConnect();

PreparedStatement ps = conn.prepareStatement(

"SELECT * FROM INFO_CONTENT WHERE ID=?");

ps.setInt(1, id);

ResultSet rs = ps.executeQuery();

while (rs.next()) {

java.sql.Clob clob = (java.sql.Clob) rs.getClob("CONTENT");

/* 以字符形式输出 */

Reader out = new BufferedReader(clob.getCharacterStream());

BufferedReader bfClob = new BufferedReader(out);

String strClob = bfClob.readLine();

StringBuffer sbResult = new StringBuffer();

while (strClob != null) {

sbResult.append(strClob);

strClob = bfClob.readLine();

}

base.setContent(sbResult.toString());

out.close();

}

rs.close();

ps.close();

}

catch (Exception ex) {

System.out.println(ex);

throw ex;

}finally {

conn.close();

}

return base;

}

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