Hibernate+Spring彻底搞定Clob、Blob的存取
一、创建实体并添加Xdoclet的Hibernate标签
/**
* @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; //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 orgId; //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 = "00"; //未填写
public static final String WORKNOTE_FULL = "11"; //已填写
/**
* @hibernate.id generator-class="sequence" column="BS"
* @hibernate.meta 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"
* @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="天气"
*/
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="内容"
*/
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="状态"
*/
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="机构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="用户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="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"
* @hibernate.meta 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="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">标识</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">天气</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">内容</meta> </property> <property name="state" type="java.lang.String" update="true" insert="true" column="state" length="2" not-null="false" > <meta attribute="field-description">状态</meta> </property> <property name="orgId" type="long" update="true" insert="true" column="orgId" > <meta attribute="field-description">机构id</meta> </property> <property name="userId" type="long" update="true" insert="true" column="userId" > <meta attribute="field-description">用户id</meta> </property> <property name="createDate" type="timestamp" update="true" insert="true" column="createDate" not-null="false" > <meta attribute="field-description">创建日期</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">图片</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(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 '标识'; comment on column rc_gzrz.workDate is '工作日期'; comment on column rc_gzrz.weather is '天气'; comment on column rc_gzrz.content is '内容'; comment on column rc_gzrz.state is '状态'; comment on column rc_gzrz.orgId is '机构id'; comment on column rc_gzrz.userId is '用户id'; comment on column rc_gzrz.createDate is '创建日期'; comment on column rc_gzrz.image is '图片'; 四、创建DAO层/** * 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 { /** * 根据日期查询工作日志 * * @param workDate 工作日期 * @param userId 用户id * @param orgId 机构id * @param sp 分页对象 * @return List */ public List findWorkNoteByDate(Date workDate, Long userId, Long orgId, SplitPage sp); /** * 根据状态查询工作日志 * * @param state 日志状态 * @param userId 用户id * @param orgId 机构id * @param sp 分页对象 * @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、创建带JTA事务控制的业务service层/** * 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、书写单元测试，并运行/** * 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); } }