spring jdbctemplate插入blob，clob并且返回生成的序列主键

首先dao类名字是WebContentDao，以下为配置的oracle序列

<bean id="increWC" class="org.springframework.jdbc.support.incrementer.OracleSequenceMaxValueIncrementer">
        <property name="incrementerName" value="s_webcontent"/> <!-- ①指定序列名 -->
        <property name="dataSource" ref="dataSource"/> 
<!-- ②设置数据源 -->
</bean>

以下为WebContentDao类的代码

@Autowired
 @Qualifier("jdbcTemplate")
 private JdbcTemplate jdbcTemplate;

 final Logger logger = LoggerFactory.getLogger(JdbcWebContentDao.class);

 @Autowired
 @Qualifier("increWC")
 private DataFieldMaxValueIncrementer increWC;

 @SuppressWarnings("unchecked")
 public int save(final WebContent wc){
     final StringReader sr = new StringReader(wc.getContent());
     final int length = wc.getContent().getBytes().length;
     jdbcTemplate.execute(
          "insert into webcontent(id,content,title) values (?,?,?)",
          new AbstractLobCreatingPreparedStatementCallback(new DefaultLobHandler()) {                        @Override
             int id = increWC.nextIntValue();
             wc.setId(id);      //由于要返回id，使用参数实体来保存id
             prep.setInt(1, id);
             lobCreator.setClobAsCharacterStream(prep, 2, sr,   length);
             prep.setString(3, wc.getTitle());
             //lobCreator.setBlobAsBinaryStream(ps, 3, blobIs, (int)blobIn.length());  

             }
          }); 
        sr.close();
        return wc.getId();

 }

由于Connection的ThreadLocal实现，两个属性JdbcTemplate和DataFieldMaxValueIncrementer都是取到同线程的Connection对象，所以不存在并发问题！

---

另外的一些做法

 /**   
     * 创建表  
     */   
    public void create(String tableName){ //tb_test1  
        jdbcTemplate.execute("create table "+tableName +" (id integer,user_name varchar2(40),password varchar2(40))");  
    }  

    //jdbcTemplate.update适合于insert 、update和delete操作；  
    /**   
     * 第一个参数为执行sql   
     * 第二个参数为参数数据   
     */   
    public void save3(User user) {  
        Assert.isNull(user, "user is not null");  
        jdbcTemplate.update("insert into tb_test1(name,password) values(?,?)",   
                new Object[]{user.getUsername(),user.getPassword()});  
    }  

    /**   
     * 第一个参数为执行sql   
     * 第二个参数为参数数据   
     * 第三个参数为参数类型   
     */   
    @Override  
    public void save(User user) {  
        Assert.isNull(user, "user is not null");  
        jdbcTemplate.update(  
                "insert into tb_test1(name,password) values(?,?)",   
                new Object[]{user.getUsername(),user.getPassword()},   
                new int[]{java.sql.Types.VARCHAR,java.sql.Types.VARCHAR}  
                );  
    }  

    //避免sql注入  
    public void save2(final User user) {  
        Assert.isNull(user, "user is not null");  

        jdbcTemplate.update("insert into tb_test1(name,password) values(?,?)",   
                new PreparedStatementSetter(){  

                    @Override  
                    public void setValues(PreparedStatement ps) throws SQLException {  
                        ps.setString(1, user.getUsername());  
                        ps.setString(2, user.getPassword());  
                    }  
        });  

    }  

    public void save4(User user) {  
        Assert.isNull(user, "user is not null");  
        jdbcTemplate.update("insert into tb_test1(name,password) values(?,?)",   
                             new Object[]{user.getUsername(),user.getPassword()});  
    }  

    //返回插入的主键  
    public List save5(final User user) {  

        KeyHolder keyHolder = new GeneratedKeyHolder();  

        jdbcTemplate.update(new PreparedStatementCreator() {  

                                @Override  
                                public PreparedStatement createPreparedStatement(Connection connection) throws SQLException {  
                                    PreparedStatement ps = connection.prepareStatement("insert into tb_test1(name,password) values(?,?)", new String[] {"id"});  
                                    ps.setString(1, user.getUsername());  
                                    ps.setString(2, user.getPassword());  
                                    return ps;  
                                }  
                            },  
                keyHolder);  

        return keyHolder.getKeyList();  
    }  

    @Override  
    public void update(final User user) {  
        jdbcTemplate.update(  
                "update tb_test1 set name=？,password=？ where id = ?",   
                new PreparedStatementSetter(){  
                    @Override  
                    public void setValues(PreparedStatement ps) throws SQLException {  
                        ps.setString(1, user.getUsername());  
                        ps.setString(2, user.getPassword());  
                        ps.setInt(3, user.getId());  
                    }  
                }  
        );  
    }  

    @Override  
    public void delete(User user) {  
        Assert.isNull(user, "user is not null");  
        jdbcTemplate.update(  
                "delete from tb_test1 where id = ?",   
                new Object[]{user.getId()},   
                new int[]{java.sql.Types.INTEGER});  
    }  

    @Deprecated //因为没有查询条件，所以用处不大  
    public int queryForInt1(){  
        return jdbcTemplate.queryForInt("select count(0) from tb_test1");  
    }  

    public int queryForInt2(User user){  
        return jdbcTemplate.queryForInt("select count(0) from tb_test1 where username = ?" ,  
                new Object[]{user.getUsername()});  
    }  

    //最全的参数3个  
    public int queryForInt3(User user){  
        return jdbcTemplate.queryForInt("select count(0) from tb_test1 where username = ?" ,  
                new Object[]{user.getUsername()},  
                new int[]{java.sql.Types.VARCHAR});  
    }  

    //可以返回是一个基本类型的值  
    @Deprecated  //因为没有查询条件，所以用处不大  
    public String queryForObject1(User user) {  
        return (String) jdbcTemplate.queryForObject("select username from tb_test1 where id = 100",  
                                                    String.class);  
    }  

    //可以返回值是一个对象  
    @Deprecated //因为没有查询条件，所以用处不大  
    public User queryForObject2(User user) {  
        return (User) jdbcTemplate.queryForObject("select * from tb_test1 where id = 100", User.class); //class是结果数据的java类型  
    }  

    @Deprecated //因为没有查询条件，所以用处不大  
    public User queryForObject3(User user) {  
        return (User) jdbcTemplate.queryForObject("select * from tb_test1 where id = 100",   
                    new RowMapper(){  

                        @Override  
                        public Object mapRow(ResultSet rs, int rowNum)throws SQLException {  
                            User user  = new User();  
                            user.setId(rs.getInt("id"));  
                            user.setUsername(rs.getString("username"));  
                            user.setPassword(rs.getString("password"));  
                            return user;  
                        }  
                    }  
        );   
    }  

    public User queryForObject4(User user) {  
        return (User) jdbcTemplate.queryForObject("select * from tb_test1 where id = ?",   
                                                    new Object[]{user.getId()},  
                                                    User.class); //class是结果数据的java类型  实际上这里是做反射，将查询的结果和User进行对应复制  
    }  

    public User queryForObject5(User user) {  
        return (User) jdbcTemplate.queryForObject(  
                "select * from tb_test1 where id = ?",   
                new Object[]{user.getId()},  
                new RowMapper(){  

                    @Override  
                    public Object mapRow(ResultSet rs,int rowNum)throws SQLException {  
                        User user  = new User();  
                        user.setId(rs.getInt("id"));  
                        user.setUsername(rs.getString("username"));  
                        user.setPassword(rs.getString("password"));  
                        return user;  
                    }  

        }); //class是结果数据的java类型  
    }  

    @Override  
    public User queryForObject(User user) {  
        //方法有返回值  
        return (User) jdbcTemplate.queryForObject("select * from tb_test1 where id = ?",  
                new Object[]{user.getId()},  
                new int[]{java.sql.Types.INTEGER},   
                new RowMapper() {  

                    @Override  
                    public Object mapRow(ResultSet rs, int rowNum) throws SQLException {  
                        User user  = new User();  
                        user.setId(rs.getInt("id"));  
                        user.setUsername(rs.getString("username"));  
                        user.setPassword(rs.getString("password"));  
                        return user;  
                    }  
                }  
        );  
    }  

    @SuppressWarnings("unchecked")  
    public List<User> queryForList1(User user) {  
        return (List<User>) jdbcTemplate.queryForList("select * from tb_test1 where username = ?",   
                            new Object[]{user.getUsername()},  
                            User.class);  
    }  

    @SuppressWarnings("unchecked")  
    public List<String> queryForList2(User user) {  
        return (List<String>) jdbcTemplate.queryForList("select username from tb_test1 where sex = ?",   
                            new Object[]{user.getSex()},  
                            String.class);  
    }  

    @SuppressWarnings("unchecked")  
    //最全的参数查询  
    public List<User> queryForList3(User user) {  
        return (List<User>) jdbcTemplate.queryForList("select * from tb_test1 where username = ?",  
                            new Object[]{user.getUsername()},  
                            new int[]{java.sql.Types.VARCHAR},  
                            User.class);  
    }  

    //通过RowCallbackHandler对Select语句得到的每行记录进行解析，并为其创建一个User数据对象。实现了手动的OR映射。  
    public User queryUserById4(String id){  
        final User user  = new User();  

        //该方法返回值为void  
        this.jdbcTemplate.query("select * from tb_test1 where id = ?",   
                new Object[] { id },   
                new RowCallbackHandler() {     

                    @Override    
                    public void processRow(ResultSet rs) throws SQLException {     
                        User user  = new User();  
            user.setId(rs.getInt("id"));  
            user.setUsername(rs.getString("username"));  
            user.setPassword(rs.getString("password"));    
                    }     
        });   

        return user;     
    }  

    @SuppressWarnings("unchecked")  
    @Override  
    public List<User> list(User user) {  
        return jdbcTemplate.query("select * from tb_test1 where username like '%?%'",   
                new Object[]{user.getUsername()},   
                new int[]{java.sql.Types.VARCHAR},   
                new RowMapper(){  

                    @Override  
                    public Object mapRow(ResultSet rs, int rowNum) throws SQLException {  
                        User user  = new User();  
                        user.setId(rs.getInt("id"));  
                        user.setUsername(rs.getString("username"));  
                        user.setPassword(rs.getString("password"));  
                        return user;  
                    }  
        });  
    }  

    //批量操作    适合于增、删、改操作  
    public int[] batchUpdate(final List users) {  

        int[] updateCounts = jdbcTemplate.batchUpdate(  
                "update tb_test1 set username = ?, password = ? where id = ?",  
                new BatchPreparedStatementSetter() {  

                        @Override  
                        public void setValues(PreparedStatement ps, int i) throws SQLException {  
                            ps.setString(1, ((User)users.get(i)).getUsername());  
                            ps.setString(2, ((User)users.get(i)).getPassword());  
                            ps.setLong(3, ((User)users.get(i)).getId());  
                        }  

                        @Override  
                        public int getBatchSize() {  
                            return users.size();  
                        }  
                }   
        );  

        return updateCounts;  
    }  

    //调用存储过程  
    public void callProcedure(int id){  
        this.jdbcTemplate.update("call SUPPORT.REFRESH_USERS_SUMMARY(?)", new Object[]{Long.valueOf(id)});  
}