婢幣JDBC贋函寄侏方象斤?LOB秤趨議幣袈窃 - 園殻秘壇利
作者 佚名技术
来源 NET编程
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发布时间 2012-06-18
| BufferedWriter out = new BufferedWriter(new FileWriter(outfile)); int c; while ((c=in.read())!=-1) { out.write(c); } out.close(); in.close(); } } catch (Exception ex) { conn.rollback(); throw ex; } /* 志鹸圻戻住彜蓑 */ conn.setAutoCommit(defaultCommit); } /** * ?方象垂嶄峨秘匯倖仟議BLOB斤? * * @param infile - 方象猟周 * @throws java.lang.Exception * @roseuid 3EDA04E300F6 */ public static void blobInsert(String infile) throws Exception { /* 譜協音徭強戻住 */ boolean defaultCommit = conn.getAutoCommit(); conn.setAutoCommit(false); try { /* 峨秘匯倖腎議BLOB斤? */ stmt.executeUpdate("INSERT INTO TEST_BLOB VALUES (''''222'''', EMPTY_BLOB())"); /* 臥儂緩BLOB斤?旺迄協 */ ResultSet rs = stmt.executeQuery("SELECT BLOBCOL FROM TEST_BLOB WHERE ID=''''222'''' FOR UPDATE"); while (rs.next()) { /* 函竃緩BLOB斤? */ oracle.sql.BLOB blob = (oracle.sql.BLOB)rs.getBlob("BLOBCOL"); /* ?BLOB斤?嶄亟秘方象 */ BufferedOutputStream out = new BufferedOutputStream(blob.getBinaryOutputStream()); BufferedInputStream in = new BufferedInputStream(new FileInputStream(infile)); int c; while ((c=in.read())!=-1) { out.write(c); } in.close(); out.close(); } /* 屎塀戻住 */ conn.commit(); } catch (Exception ex) { /* 竃危指獄 */ conn.rollback(); throw ex; } /* 志鹸圻戻住彜蓑 */ conn.setAutoCommit(defaultCommit); } /** * 俐個BLOB斤??頁壓圻BLOB斤?児粥貧序佩顕固塀議俐個? * * @param infile - 方象猟周 * @throws java.lang.Exception * @roseuid 3EDA04E90106 */ public static void blobModify(String infile) throws Exception { /* 譜協音徭強戻住 */ boolean defaultCommit = conn.getAutoCommit(); conn.setAutoCommit(false); try { /* 臥儂BLOB斤?旺迄協 */ ResultSet rs = stmt.executeQuery("SELECT BLOBCOL FROM TEST_BLOB WHERE ID=''''222'''' FOR UPDATE"); while (rs.next()) { /* 函竃緩BLOB斤? */ oracle.sql.BLOB blob = (oracle.sql.BLOB)rs.getBlob("BLOBCOL"); /* ?BLOB斤?嶄亟秘方象 */ BufferedOutputStream out = new BufferedOutputStream(blob.getBinaryOutputStream()); BufferedInputStream in = new BufferedInputStream(new FileInputStream(infile)); int c; while ((c=in.read())!=-1) { out.write(c); } |
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