spring+hibernate+oracle9i用clob

spring+hibernate+oracle9i用clob

 

数据库驱动更新为classes12-9i.jar
修改hibernate的配置如下

代码

< bean  id ="nativeJdbcExtractor"  class ="org.springframework.jdbc.support.nativejdbc.SimpleNativeJdbcExtractor" /> < bean  id ="oracleLobHandle"  class ="org.springframework.jdbc.support.lob.OracleLobHandler"  Lazy-init ="true" >   < property  name ="nativeJdbcExtractor" >     < ref  local ="nativejdbcExtractor" />   </ property > </ bean >

在有clob类型sessionFactory(org.springframework.com .hibernate.LocalSessionFractory Bean)中加入
<property name="lobHandler"><ref bean="oracleLobHandle"/>< /property>

在需要clob的JavaBean对应的hbm.xml中，改对应的clob类型的字段

代码

< property   name =""  type ="org.springframework.orm.hibernate.support.ClobStringType"  clumn =""  length ="XXXXXX" <!-- 定义clob字段大小(以字节为单位，最大2GB)--> >

JavaBean的对应的属性类型为String

------------------------------------------------------------------------------
---- hibernate3 使用blob 和 clob 演例代码-----

hibernate3 使用blob 和 clob 演例代码：

 1 import  java.io.File;
 2 import  java.io.FileInputStream;
 3 import  java.io.OutputStream;
 4 import  java.io.Writer;
 5 import  java.sql.Clob;
 6 import  oracle.sql.CLOB;
 7 import  org.hibernate.LockMode;
 8 import  org.hibernate.Transaction;
 9 import  org.hibernate.Session;
10 import  org.hibernate.Hibernate;
11 import  org.hibernate.lob.SerializableBlob;
12 import  org.hibernate.lob.SerializableClob;
13
14
15 public   class  test1  {
16
17        /** *//**
18         * @param args
19         */
20        static Session session = HibernateSessionFactory.currentSession();
21        
22        public boolean inserted(TStu obj){
23                
24                Transaction tran = session.beginTransaction();
25                session.save(obj);
26                session.flush();
27                session.refresh(obj,LockMode.UPGRADE);
28                try
29                {
30                SerializableBlob sb = (SerializableBlob)obj.getImg();
31                java.sql.Blob wrapblob = sb.getWrappedBlob();
32                if(wrapblob instanceof oracle.sql.BLOB){
33                         oracle.sql.BLOB blob = (oracle.sql.BLOB) wrapblob;
34                OutputStream bout = blob.getBinaryOutputStream();
35                FileInputStream fin = new FileInputStream("d:\\a.jpg");//修改你要存入的图片
36                byte [] buf = new byte[10240];//做为10K的缓存写入
37                int len;
38                while((len = fin.read(buf))>0){
39                        bout.write(buf,0,len);
40                }
41                bout.close();
42                fin.close();
43                }
44                
45                SerializableClob  sc = (SerializableClob)obj.getResu();
46                Clob wrapclob = sc.getWrappedClob();
47                if(wrapclob instanceof CLOB){
48                        CLOB clob = (CLOB)wrapclob; 
49                        Writer cout = clob.getCharacterOutputStream();
50                        File file = new File("C:\\log_2005_8.txt");//修改你要存如的文本
51                        FileInputStream fin = new FileInputStream(file);
52                        int read;
53                        while((read = fin.read())!= -1){
54                                cout.write(read);
55                        }
56                        fin.close();
57                        cout.close();
58                }
59                
60                tran.commit();
61                return true;
62                }catch(Exception ex){
63                        ex.printStackTrace();
64                        tran.rollback();
65                        return false;
66                }
67        }
68        
69        public static void main(String[] args) {
70                // TODO Auto-generated method stub         
71                test1 t = new test1();
72                 TStu stu = new TStu();
73                 stu.setAge(new Integer("23"));
74                 stu.setName("lilei");
75                 stu.setImg(Hibernate.createBlob(new byte[1]));
76                 stu.setResu(Hibernate.createClob(" "));
77                 t.inserted(stu);        
78        }
79}
80
81

org link: http://www.matrix.org.cn/thread.shtml?topicId=27138&forumId=23