clob類型的數(shù)據(jù)直接insert可能會(huì)因?yàn)樽址^(guò)長(zhǎng)而出錯(cuò),所以要用對(duì)象形式插入.

示例:

首先,創(chuàng)建一個(gè)含CLOB字段的表:

create table test (id INTEGER, content clob);

然后插入空值

String strSql = “INSERT INTO TEST(id,content) values(‘0001’,?) ”;

con.setAutoCommit(false); //conn為Connection對(duì)象

//創(chuàng)建并實(shí)例化一個(gè)CLOB對(duì)象

CLOB clob = new CLOB((OracleConnection)con);

   clob = oracle.sql.CLOB.createTemporary((OracleConnection)con,true,1);

//對(duì)CLOB對(duì)象賦值

   clob.putString(1,formateSingleQuotes(Content));

   OracleConnection OCon = (OracleConnection)con;

   OraclePreparedStatement pstmt = (OraclePreparedStatement)OCon.prepareCall(strSql);

   pstmt.setCLOB(1,clob);

   int i = pstmt.executeUpdate();

   pstmt.close();

   OCon.commit();

   OCon = null;

con = null;      

Boolean flag = true;

if(i <=0)

 {

      flag = false;

 }

if (flag == true)

 {

       out.print( "<script>alert('成功保存!'); </script>");

}

 else

 {

       out.print( "<script>alert('保存數(shù)據(jù)時(shí)出錯(cuò),請(qǐng)檢查你輸入的數(shù)據(jù)格式是否符合要求');self.history.back ();</script>");

 }

注意：

一定不要忘記引入包：import oracle.sql.*,oracle.jdbc.driver.*

2.       CLOB類型的修改

對(duì)CLOB字段的修改除了sql語(yǔ)句外其他和插入相同

String strSql = “UPDATE TEST set content=? Where Id=’0001’ ”;

con.setAutoCommit(false); //conn為Connection對(duì)象

//創(chuàng)建并實(shí)例化一個(gè)CLOB對(duì)象

CLOB clob = new CLOB((OracleConnection)con);

   clob = oracle.sql.CLOB.createTemporary((OracleConnection)con,true,1);

//對(duì)CLOB對(duì)象賦值

   clob.putString(1,formateSingleQuotes(Content));

   OracleConnection OCon = (OracleConnection)con;

   OraclePreparedStatement pstmt = (OraclePreparedStatement)OCon.prepareCall(strSql);

   pstmt.setCLOB(1,clob);

   int i = pstmt.executeUpdate();

   pstmt.close();

   OCon.commit();

   OCon = null;

con = null;      

Boolean flag = true;

if(i <=0)

 {

      flag = false;

 }

if (flag == true)

 {

       out.print( "<script>alert('成功保存!'); </script>");

}

 else

 {

       out.print( "<script>alert('保存數(shù)據(jù)時(shí)出錯(cuò),請(qǐng)檢查你輸入的數(shù)據(jù)格式是否符合要求');self.history.back ();</script>");

 }