Clob type for Oracle Database Operations

Last Update:2018-12-06 Source: Internet

Author: User

Tags html encode

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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">

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

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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