摘要：本文通過一個實例講述如何通過Spring2+Hibernate3來快捷操作數據庫中的Lob字段。
環境：Oracle10g、Srping2、Hibernate3、JUint4
一、創建實體并添加Xdoclet的Hibernate標簽
/**
* @author leizhimin
* @hibernate.mapping default-lazy="false"
* @hibernate.meta attribute="class-description" value="工作日志"
* @hibernate.class table="rc_gzrz"
*/
public class WorkNote {
private Long id; //標識
private Date workDate; //日期
private String weather; //天氣
private String content; //日志內容(Clob)
private String state; //日志狀態
private Long orgId; //機構id
private Long userId; //用戶id
private Date createDate; //創建日期
private byte[] image; //圖片
public static final String WORKNOTE_BLANK = "00"; //未填寫
public static final String WORKNOTE_FULL = "11"; //已填寫
/**
* @hibernate.id generator-class="sequence" column="BS"
* @hibernate.meta attribute="field-description" value="標識"
* @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"
* @hibernate.meta 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="24"
* @hibernate.meta attribute="field-description" value="天氣"
*/
public String getWeather() {
return weather;
}
public void setWeather(String weather) {
this.weather = weather;
}
/**
* @hibernate.property column="content" not-null="false" type="text"
* @hibernate.meta attribute="field-description" value="內容"
*/
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
/**
* @hibernate.property column="state" not-null="false" length="2"
* @hibernate.meta attribute="field-description" value="狀態"
*/
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
/**
* @hibernate.property column="orgId" type="long"
* @hibernate.meta attribute="field-description" value="機構id"
*/
public Long getOrgId() {
return orgId;
}
public void setOrgId(Long orgId) {
this.orgId = orgId;
}
/**
* @hibernate.property column="userId" type="long"
* @hibernate.meta attribute="field-description" value="用戶id"
*/
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
/**
* @hibernate.property column="createDate" not-null="false" type="timestamp"
* @hibernate.meta attribute="field-description" value="創建日期"
*/
public Date getCreateDate() {
return createDate;
}
public void setCreateDate(Date createDate) {
this.createDate = createDate;
}
/**
* @hibernate.property column="image" type="blob" not-null="false"
* @hibernate.meta attribute="field-description" value="圖片"
*/
public byte[] getImage() {
return image;
}
public void setImage(byte[] image) {
this.image = image;
}
}
二、通過XDoclet生成Mapping，并修正lob映射的類型為Spring提供的類型
<?xml version="1.0" encoding="gb2312"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping
default-lazy="false"
>
<class
name="com.topsoft.oa.routine.domain.office.entity.WorkNote"
table="rc_gzrz"
>
<meta attribute="class-description">工作日志</meta>
<id
name="id"
column="BS"
type="java.lang.Long"
>
<meta attribute="field-description">標識</meta>
<generator class="sequence">
<param name="sequence">SEQ_GW</param>
<!--
To add non XDoclet generator parameters, create a file named
hibernate-generator-params-WorkNote.xml
containing the additional parameters and place it in your merge dir.
-->
</generator>
</id>
<property
name="workDate"
type="timestamp"
update="true"
insert="true"
column="workDate"
not-null="false"
>
<meta attribute="field-description">工作日期</meta>
</property>
<property
name="weather"
type="java.lang.String"
update="true"
insert="true"
column="weather"
length="24"
not-null="false"
>
<meta attribute="field-description">天氣</meta>
</property>
<property
name="content"
type="org.springframework.orm.hibernate3.support.ClobStringType"
update="true"
insert="true"
column="content"
not-null="false"
>
<meta attribute="field-description">內容</meta>
</property>
<property
name="state"
type="java.lang.String"
update="true"
insert="true"
column="state"
length="2"
not-null="false"
>
<meta attribute="field-description">狀態</meta>
</property>
<property
name="orgId"
type="long"
update="true"
insert="true"
column="orgId"
>
<meta attribute="field-description">機構id</meta>
</property>
<property
name="userId"
type="long"
update="true"
insert="true"
column="userId"
>
<meta attribute="field-description">用戶id</meta>
</property>
<property
name="createDate"
type="timestamp"
update="true"
insert="true"
column="createDate"
not-null="false"
>
<meta attribute="field-description">創建日期</meta>
</property>
<property
name="image"
type="org.springframework.orm.hibernate3.support.BlobByteArrayType"
update="true"
insert="true"
column="image"
not-null="false"
>
<meta attribute="field-description">圖片</meta>
</property>
<!--
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、通過Mapping 用XDoclet生成數據庫（Oracle）腳本，并建表
drop table rc_gzrz cascade constraints;
create table rc_gzrz (
BS number(19,0) not null,
workDate timestamp,
weather varchar2(24 char),
content clob,
state varchar2(2 char),
orgId number(19,0),
userId number(19,0),
createDate timestamp,
image blob,
primary key (BS)
);
comment on table rc_gzrz is
'工作日志'
comment on column rc_gzrz.BS is
'標識'
comment on column rc_gzrz.workDate is
'工作日期'
comment on column rc_gzrz.weather is
'天氣'
comment on column rc_gzrz.content is
'內容'
comment on column rc_gzrz.state is
'狀態'
comment on column rc_gzrz.orgId is
'機構id'
comment on column rc_gzrz.userId is
'用戶id'
comment on column rc_gzrz.createDate is
'創建日期'
comment on column rc_gzrz.image is
'圖片'
四、創建DAO層
/**
* Created by IntelliJ IDEA.
* User: leizhimin
* Date: 2007-11-16
* Time: 10:55:50
* To change this template use File | Settings | File Templates.
*/
public interface WorkNoteDAO extends CommonDAO {
/**
* 根據日期查詢工作日志
*
* @param workDate 工作日期
* @param userId 用戶id
* @param orgId 機構id
* @param sp 分頁對象
* @return List
*/
public List findWorkNoteByDate(Date workDate, Long userId, Long orgId, SplitPage sp);
/**
* 根據狀態查詢工作日志
*
* @param state 日志狀態
* @param userId 用戶id
* @param orgId 機構id
* @param sp 分頁對象
* @return List
*/
public List findWorkNoteByState(String state, Long userId, Long orgId, SplitPage sp);
}
/**
* Created by IntelliJ IDEA.
* User: leizhimin
* Date: 2007-11-16
* Time: 10:56:00
* To change this template use File | Settings | File Templates.
*/
public class WorkNoteDAOImpl extends CommonDAOImpl implements WorkNoteDAO{
public List findWorkNoteByDate(Date workDate, Long userId, Long orgId, SplitPage sp) {
return null;
}
public List findWorkNoteByState(String state, Long userId, Long orgId, SplitPage sp) {
return null;
}
}
五、創建帶JTA事務控制的業務service層
/**
* Created by IntelliJ IDEA.
* User: leizhimin
* Date: 2007-11-16
* Time: 16:43:57
* 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: 2007-11-16
* Time: 16:45:54
* 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、書寫單元測試，并運行
/**
* Created by IntelliJ IDEA.
* User: leizhimin
* Date: 2007-11-16
* Time: 16:49:17
* 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("http://lavasoft.blog.51cto.com/");
workNote.setOrgId(Long.parseLong("999"));
workNote.setCreateDate(new Date());
byte[] b="lavasoft".getBytes();
workNote.setImage(b);
officeService.saveWorkNote(workNote);
}
}
看看測試結果：
posted on 2008-06-04 20:43
lvq810 閱讀(684)
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