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Clob type for Oracle Database Operations

Source: Internet
Author: User
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<% @ Page contenttype = "text/html; charset = gb2312" Language = "Java" %>
<% @ Page import = "Java. util. *, java. SQL. *, Oracle. SQL. *, java. Io. *" %>
<! Doctype HTML public "-// W3C // dtd html 4.01 transitional // en"
Http://www.w3.org/TR/html4/loose.dtd>
<HTML>
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312">
<Title> Oracle operation </title>
<Style type = "text/CSS">
<! --
TD {
Font-family: Arial, Helvetica, sans-serif;
Font-size: 14px;
Color: #000000;
Text-Decoration: none;
}
-->
</Style>
</Head>
<Body>
<%
Java. SQL. Connection conn; // database connection object \ r
Java. Lang. String strcon; // database connection string
Strcon = "JDBC: oracle: thin :@ localhost: 1521: ";
Java. Lang. String strsql; // SQL statement \ r
// Try {

Class. forname ("oracle. JDBC. Driver. oracledriver"). newinstance ();
Conn = java. SQL. drivermanager. getconnection (strcon, "Kevin", "DDD ");
Statement stmt = conn. createstatement ();
Java. SQL. preparedstatement pstmt = NULL;
Boolean defacomcommit = conn. getautocommit ();
Conn. setautocommit (false );
String query;
Query = "select * From tblproduct ";
Pstmt = conn. preparestatement (query );
Resultset rs = pstmt.exe cutequery ();

%>
<Table width = "770" border = "0" align = "center" cellpadding = "0" cellspacing = "1" bgcolor = "# e7e7e7">
<%
String content = "";
String description = "";
While (Rs. Next ()){
Oracle. JDBC. Driver. oracleresultset ors =
(Oracle. JDBC. Driver. oracleresultset) RS;
Clob clobtmp = (clob) ors. getclob (8 );
If (clobtmp = NULL | clobtmp. Length () = 0 ){
// Out. println ("===== clob object is blank ");
Description = "";
} Else {
Description = clobtmp. getsubstring (long) 1, (INT) clobtmp. Length ());
// Out. println ("====== string format" + description );
}
// Clob. empty_lob ();
/* Output in character form */
/* Bufferedreader in = new bufferedreader (clob. getcharacterstream ());
Bufferedwriter out2 = new bufferedwriter (New filewriter ("test.txt "));
Int C;
*/
String STR = "";
If (clobtmp! = NULL ){
Reader is = clobtmp. getcharacterstream ();
Bufferedreader BR = new bufferedreader (is );
STR = Br. Readline ();
}

%>
<Tr bgcolor = "# ffffff">
<TD Height = "19"> <% Out. println (Rs. getstring (1); %> </TD>
<TD> <% Out. println (Rs. getstring (2); %> </TD>
<TD> <% Out. println (Rs. getstring (4); %> </TD>
<TD> <% = STR %> </TD>
<TD> <% = Description %> </TD>
</Tr>
<%
}
%>
</Table>
<%
Rs. Close ();
Stmt. Close ();
Conn. Close ();
/*
}
Catch (exception e ){
Out. println ("error" + E );
}
*/
%>
</Body>
</Html> <% @ page contenttype = "text/html; charset = gb2312" Language = "Java" %>
<% @ Page import = "Java. util. *, java. Lang. *, java. SQL. *, java. Io. *" %>
<% @ Page import = "oracle. SQL. *, webutil. *" %>
<! Doctype HTML public "-// W3C // dtd html 4.01 transitional // en"
Http://www.w3.org/TR/html4/loose.dtd>
<HTML>
<Head>
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312">
<Title> Oracle operation </title>
<Style type = "text/CSS">
<! --
TD {
Font-family: Arial, Helvetica, sans-serif;
Font-size: 14px;
Color: #000000;
Text-Decoration: none;
}
-->
</Style>
</Head>
<Body>
<%
Java. SQL. Connection conn; // database connection object \ r
Java. Lang. String strcon; // database connection string
Stringbuffer SBF;
SBF = new stringbuffer ();

Strcon = "JDBC: oracle: thin :@ localhost: 1521: ";
Java. Lang. String strsql, strtmp; // SQL statement \ r
Strtmp = "testestsetse ";
// Try {
Class. forname ("oracle. JDBC. Driver. oracledriver"). newinstance ();
Conn = java. SQL. drivermanager. getconnection (strcon, "Kevin", "DDD ");
Statement stmt = conn. createstatement ();
Java. SQL. preparedstatement pstmt = NULL;
Resultset rs = NULL;
String query = "", description = "";
Conn. setautocommit (false );

File F = NULL;
F = new file ("I: // JSP // exercise // Oracle // humor.txt ");
Fileinputstream Fi = new fileinputstream (f );
Int size = Fi. Available ();
For (INT I = 0; I <size; I ++)
{
// System. Out. Print (char) Fi. Read ());
SBF. append (char) Fi. Read ());
}
Fi. Close ();

Query = "insert into tblproduct (proid, prodetail, productname) values (?, Empty_clob (),?) ";
Pstmt = conn. preparestatement (query );
Pstmt. setint (1, 68 );
Pstmt. setstring (2, "GG ");
Pstmt.exe cuteupdate ();
Pstmt = NULL;
Query = "select prodetail from tblproduct where proid = 68 for update ";
Pstmt = conn. preparestatement (query );
Rs = pstmt.exe cutequery ();

Clob clobtt = NULL;
If (Rs. Next ()){
Oracle. JDBC. Driver. oracleresultset ors = (Oracle. JDBC. Driver. oracleresultset) RS;
Clobtt = (clob) ors. getclob (1 );

}

/* // Write data to the clob object
Bufferedwriter BW = new bufferedwriter (clobtt. getcharacteroutputstream ());
Bufferedreader in = new bufferedreader (New filereader ("I: // JSP // exercise // Oracle // humor.txt "));
Int C;
While (C = in. Read ())! =-1 ){
Bw. Write (C );
}
In. Close ();
Bw. Close ();
*/

Writer wR = clobtt. getcharacteroutputstream ();
String strsbf = new string (SBF. tostring (). getbytes ("iso8859_1"), "gb2312 ");

Wr.write(webutil.html encode (strsbf ));
Wr. Flush ();
Wr. Close ();

Rs. Close ();
Conn. Commit ();
// Out.print(webutil.html encode (SBF. tostring ()));
%>
<Table width = "770" border = "0" align = "center" cellpadding = "0" cellspacing = "0" bgcolor = "# e7e7e7">

<Tr bgcolor = "# ffffff">
<TD Height = "19"> </TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
<TD> </TD>
</Tr>

</Table>
<%
/*
}
Catch (exception e ){
Out. println ("error" + E );
}
*/
%>
</Body>
</Html>

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