知识大全 Hibernate+Spring搞定Clob、Blob的存取

Posted 2022-07-14 知

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　　摘要本文通过一个实例讲述如何通过Spring +Hibernate 来快捷操作数据库中的Lob字段环境 Oracle g Srping Hibernate JUint

　　说明由于时间紧迫没有详细写出思路运行一下例子就明白了

　　一创建实体并添加Xdoclet的Hibernate标签

　　/** * @author leizhimin * @hibernate mapping default lazy= false * ta attribute= class description value= 工作日志 * @hibernate class table= rc_gzrz */ public class WorkNote private Long id; //标识 private Date workDate; //日期 private String weather; //天气 private String content; //日志内容(Clob) private String state; //日志状态 private Long Id; //机构id private Long userId; //用户id private Date createDate; //创建日期 private byte[] image; //图片

　　public static final String WORKNOTE_BLANK = ; //未填写 public static final String WORKNOTE_FULL = ; //已填写

　　/** * @hibernate id generator class= sequence column= BS * ta attribute= field description value= 标识 * @hibernate generator param name= sequence value= SEQ_GW */ public Long getId() return id;

　　public void setId(Long id) this id = id;

　　/** * @hibernate property column= workDate not null= false type= timestamp * ta attribute= field description value= 工作日期 */

　　public Date getWorkDate() return workDate;

　　public void setWorkDate(Date workDate) this workDate = workDate;

　　/** * @hibernate property column= weather not null= false length= * ta attribute= field description value= 天气 */ public String getWeather() return weather;

　　public void setWeather(String weather) this weather = weather;

　　/** * @hibernate property column= content not null= false type= text * ta attribute= field description value= 内容 */ public String getContent() return content;

　　public void setContent(String content) ntent = content;

　　/** * @hibernate property column= state not null= false length= * ta attribute= field description value= 状态 */ public String getState() return state;

　　public void setState(String state) this state = state;

　　/** * @hibernate property column= Id type= long * ta attribute= field description value= 机构id */ public Long getOrgId() return Id;

　　public void setOrgId(Long Id) Id = Id;

　　/** * @hibernate property column= userId type= long * ta attribute= field description value= 用户id */ public Long getUserId() return userId;

　　public void setUserId(Long userId) this userId = userId;

　　/** * @hibernate property column= createDate not null= false type= timestamp * ta attribute= field description value= 创建日期 */ public Date getCreateDate() return createDate;

　　public void setCreateDate(Date createDate) this createDate = createDate;

　　/** * @hibernate property column= image type= blob not null= false * ta attribute= field description value= 图片 */ public byte[] getImage() return image;

　　public void setImage(byte[] image) this image = image;

二通过XDoclet生成Mapping 并修正lob映射的类型为Spring提供的类型

　　<?xml version= encoding= gb ?>

　　<!DOCTYPE hibernate mapping PUBLIC //Hibernate/Hibernate Mapping DTD //EN mapping dtd >

　　<! To add non XDoclet property mappings create a file named hibernate properties WorkNote xml containing the additional properties and place it in your merge dir >

　　</class>

　　</hibernate mapping>

　　三通过Mapping 用XDoclet生成数据库（Oracle）脚本并建表

　　drop table rc_gzrz cascade constraints;

　　create table rc_gzrz ( BS number( ) not null workDate timestamp weather varchar ( char) content clob state varchar ( char) Id number( ) userId number( ) createDate timestamp image blob primary key (BS) );

　　ment on table rc_gzrz is 工作日志 ;

　　ment on column rc_gzrz BS is 标识 ;

　　ment on column rc_gzrz workDate is 工作日期 ;

　　ment on column rc_gzrz weather is 天气 ;

　　ment on column ntent is 内容 ;

　　ment on column rc_gzrz state is 状态 ;

　　ment on column Id is 机构id ;

　　ment on column rc_gzrz userId is 用户id ;

　　ment on column rc_gzrz createDate is 创建日期 ;

　　ment on column rc_gzrz image is 图片 ;

　　四创建DAO层

　　/** * Created by IntelliJ IDEA * User: leizhimin * Date: * Time: : : * To change this template use File | Settings | File Templates */ public interface WorkNoteDAO extends CommonDAO /** * 根据日期查询工作日志 * * @param workDate 工作日期 * @param userId 用户id * @param Id 机构id * @param sp 分页对象 * @return List */ public List findWorkNoteByDate(Date workDate Long userId Long Id SplitPage sp);

　　/** * 根据状态查询工作日志 * * @param state 日志状态 * @param userId 用户id * @param Id 机构id * @param sp 分页对象 * @return List */ public List findWorkNoteByState(String state Long userId Long Id SplitPage sp);

　　/** * Created by IntelliJ IDEA * User: leizhimin * Date: * Time: : : * To change this template use File | Settings | File Templates */ public class WorkNoteDAOImpl extends CommonDAOImpl implements WorkNoteDAO public List findWorkNoteByDate(Date workDate Long userId Long Id SplitPage sp) return null;

　　public List findWorkNoteByState(String state Long userId Long Id SplitPage sp) return null;

　　五创建带JTA事务控制的业务service层

　　/** * Created by IntelliJ IDEA * User: leizhimin * Date: * Time: : : * To change this template use File | Settings | File Templates */ public interface OfficeService

　　public void saveWorkNote(WorkNote workNote);

　　public void updateWorkNote(WorkNote workNote);

　　/** * Created by IntelliJ IDEA * User: leizhimin * Date: * Time: : : * To change this template use File | Settings | File Templates */ public class OfficeServiceImpl implements OfficeService private WorkNoteDAO workNoteDAO;

　　public WorkNoteDAO getWorkNoteDAO() return workNoteDAO;

　　public void setWorkNoteDAO(WorkNoteDAO workNoteDAO) this workNoteDAO = workNoteDAO;

　　public void saveWorkNote(WorkNote workNote) this workNoteDAO saveObject(workNote);

　　public void updateWorkNote(WorkNote workNote) this workNoteDAO updateObject(workNote);

　　六书写单元测试并运行 /** * Created by IntelliJ IDEA * User: leizhimin * Date: * Time: : : * To change this template use File | Settings | File Templates */ public class TestOffice extends TestCase public void test_worknote_save() OfficeService officeService = (OfficeService) ContextHelper getContext() getBean( officeServiceProxy ); WorkNote workNote=new WorkNote(); workNote setContent( ); workNote setOrgId(Long parseLong( )); workNote setCreateDate(new Date()); byte[] b= lavasoft getBytes(); workNote setImage(b); officeService saveWorkNote(workNote);

　　看看测试结果

cha138/Article/program/Java/ky/201311/27913