clob類型的數據直接insert可能會因為字符過長而出錯,所以要用對象形式插入.

示例:

首先,創建一個含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對象

//創建并實例化一個CLOB對象

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

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

//對CLOB對象賦值

   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('保存數據時出錯,請檢查你輸入的數據格式是否符合要求');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CLOB字段的修改除了sql語句外其他和插入相同

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

con.setAutoCommit(false); //conn為Connection對象

//創建并實例化一個CLOB對象

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

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

//對CLOB對象賦值

   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('保存數據時出錯,請檢查你輸入的數據格式是否符合要求');self.history.back ();</script>");

 }