开发环境的塔建我就不多说了，具体可以参考我以前的几篇日志。

在Eclipse中新建一个动态Web工程，将Struts 、Spring、Hibernate需要的jar都添加到WEB-INF/lib目录下，

将Struts标签所需的tld文件、struts-config.xml文件(可以由StrutsIDE生成)添加到WEB-INF下，另外在

此目录下添加一个Spring的配置文件applicationContext.xml。

我参考的例子是夏昕的《深入浅出Hibernate》上的第6章，很好的一个论坛示例。

首先按照书上的ER模型，在数据库(MySQL)中建立相应的数据库。

create database forum;

use forum;

create table user(

id int not null auto_increment primary key,

name varchar(50),

pwd varchar(50),

email varchar(50)

)type=innodb;

create table board(

id int not null auto_increment primary key,

parent_id int,

create_by int not null,

name varchar(50) not null,

remark varchar(255),

create_time datetime,

index(parent_id),

index(create_by),

foreign key(parent_id) references board(id) on delete cascade,

foreign key(create_by) references user(id) on delete no action

)type=innodb;

create table article(

id int not null auto_increment primary key,

parent_id int ,

board_id int not null,

article_type int not null,

title varchar(255),

body text,

create_by int not null,

create_time datetime,

hits int unsigned,

bytes int unsigned,

last_update_by int not null,

last_update_time datetime,

index(parent_id),

index(board_id),

index(create_by),

index(last_update_by),

foreign key(parent_id) references article(id) on delete no action,

foreign key(board_id) references board(id) on delete cascade,

foreign key(create_by) references user(id) on delete no action,

foreign key(last_update_by) references user(id) on delete no action

)type=innodb;

之后，我选择了用Hibernate Sychonizer来生成映射文件和实体类，然后对生成的类进行修改(删掉了生成的Base类)，

实际上Hibernate Sychonizer生成的映射文件也有错误，需要修改，我也是后来在使用中发现的。

//User.hbm.xml

/p>

"-//Hibernate/Hibernate Mapping DTD//EN"

"

http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd

" >

name="User"

table="user"

>

name="Id"

type="integer"

column="id"

>

name="Name"

column="name"

type="string"

not-null="false"

length="50"

/>

name="Pwd"

column="pwd"

type="string"

not-null="false"

length="50"

/>

name="Email"

column="email"

type="string"

not-null="false"

length="50"

/>

【这里的create_by是后来修改的，Hibernate Sychonizer生成的有错，后面有几处同样的错误】

【这里的create_by是后来修改的】

//User.java

package com.lzy.forum.domain;

public class User{

private static final long serialVersionUID = 1L;

//  primary key

private java.lang.Integer id;

// fields

private java.lang.String name;

private java.lang.String pwd;

private java.lang.String email;

// collections

private java.util.Set articlesByLastUpdateBy;

private java.util.Set articlesByCreateBy;

private java.util.Set boards;

public java.util.Set getArticlesByCreateBy() {

return articlesByCreateBy;

}

public void setArticlesByCreateBy(java.util.Set articlesByCreateBy) {

this.articlesByCreateBy = articlesByCreateBy;

}

public java.util.Set getArticlesByLastUpdateBy() {

return articlesByLastUpdateBy;

}

public void setArticlesByLastUpdateBy(

java.util.Set articlesByLastUpdateBy) {

this.articlesByLastUpdateBy = articlesByLastUpdateBy;

}

public java.util.Set getBoards() {

return boards;

}

public void setBoards(java.util.Set boards) {

this.boards = boards;

}

public java.lang.String getEmail() {

return email;

}

public void setEmail(java.lang.String email) {

this.email = email;

}

public java.lang.Integer getId() {

return id;

}

public void setId(java.lang.Integer id) {

this.id = id;

}

public java.lang.String getName() {

return name;

}

public void setName(java.lang.String name) {

this.name = name;

}

public java.lang.String getPwd() {

return pwd;

}

public void setPwd(java.lang.String pwd) {

this.pwd = pwd;

}

}

//Board.hbm.xml

/p>

"-//Hibernate/Hibernate Mapping DTD//EN"

"

http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd

" >

name="Board"

table="board"

>

false

name="Id"

type="integer"

column="id"

>

name="Name"

column="name"

type="string"

not-null="true"

length="50"

/>

name="Remark"

column="remark"

type="string"

not-null="false"

length="255"

/>

name="CreateTime"

column="create_time"

type="timestamp"

not-null="false"

length="19"

/>

name="CreateBy"

column="create_by"

class="User"

not-null="true"

>

name="Parent"

column="parent_id"

class="Board"

not-null="false"

lazy="false">

【这里的board_id是后来修改的】

【这里的parent_id是后来修改的】

//Board.java

package com.lzy.forum.domain;

public class Board  {

private static final long serialVersionUID = 1L;

//  primary key

private java.lang.Integer id;

// fields

private java.lang.String name;

private java.lang.String remark;

private java.util.Date createTime;

// many to one

private com.lzy.forum.domain.User createBy;

private com.lzy.forum.domain.Board parent;

// collections

private java.util.Set articles;

private java.util.Set childBoards;

public java.util.Set getArticles() {

return articles;

}

public void setArticles(java.util.Set articles) {

this.articles = articles;

}

public java.util.Set getChildBoards() {

return childBoards;

}

public void setChildBoards(java.util.Set childBoards) {

this.childBoards = childBoards;

}

public com.lzy.forum.domain.User getCreateBy() {

return createBy;

}

public void setCreateBy(com.lzy.forum.domain.User createBy) {

this.createBy = createBy;

}

public java.util.Date getCreateTime() {

return createTime;

}

public void setCreateTime(java.util.Date createTime) {

this.createTime = createTime;

}

public java.lang.Integer getId() {

return id;

}

public void setId(java.lang.Integer id) {

this.id = id;

}

public java.lang.String getName() {

return name;

}

public void setName(java.lang.String name) {

this.name = name;

}

public com.lzy.forum.domain.Board getParent() {

return parent;

}

public void setParent(com.lzy.forum.domain.Board parent) {

this.parent = parent;

}

public java.lang.String getRemark() {

return remark;

}

public void setRemark(java.lang.String remark) {

this.remark = remark;

}

}

//Article.hbm.xml

/p>

"-//Hibernate/Hibernate Mapping DTD//EN"

"

http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd

" >

name="Article"

table="article"

>

false

name="Id"

type="integer"

column="id"

>

name="ArticleType"

column="article_type"

type="integer"

not-null="true"

length="11"

/>

name="Title"

column="title"

type="string"

not-null="false"

length="255"

/>

name="Body"

column="body"

type="string"

not-null="false"

/>

name="Hits"

column="hits"

type="integer"

not-null="false"

length="10"

/>

name="Bytes"

column="bytes"

type="integer"

not-null="false"

length="10"

/>

name="CreateTime"

column="create_time"

type="timestamp"

not-null="false"

length="19"

/>

name="LastUpdateTime"

column="last_update_time"

type="timestamp"

not-null="false"

length="19"

/>

name="LastUpdateBy"

column="last_update_by"

class="User"

not-null="true"

>

name="CreateBy"

column="create_by"

class="User"

not-null="true"

>

name="Parent"

column="parent_id"

class="Article"

not-null="false"

>

name="Board"

column="board_id"

class="Board"

not-null="true"

>

【这里的parent_id是后来修改的】

//Article.java

package com.lzy.forum.domain;

import java.util.Date;

public class Article  {

private static final long serialVersionUID = 1L;

// primary key

private java.lang.Integer id;

// fields

private java.lang.Integer articleType;

private java.lang.String title;

private java.lang.String body;

private java.lang.Integer hits;

private java.lang.Integer bytes;

private java.util.Date lastUpdateTime;

private java.util.Date createTime;

// many to one

private com.lzy.forum.domain.User lastUpdateBy;

private com.lzy.forum.domain.User createBy;

private com.lzy.forum.domain.Article parent;

private com.lzy.forum.domain.Board board;

// collections

private java.util.Set articles;

public java.util.Set getArticles() {

return articles;

}

public void setArticles(java.util.Set articles) {

this.articles = articles;

}

public java.lang.Integer getArticleType() {

return articleType;

}

public void setArticleType(java.lang.Integer articleType) {

this.articleType = articleType;

}

public com.lzy.forum.domain.Board getBoard() {

return board;

}

public void setBoard(com.lzy.forum.domain.Board board) {

this.board = board;

}

public java.lang.String getBody() {

return body;

}

public void setBody(java.lang.String body) {

this.body = body;

}

public java.lang.Integer getBytes() {

return bytes;

}

public void setBytes(java.lang.Integer bytes) {

this.bytes = bytes;

}

public com.lzy.forum.domain.User getCreateBy() {

return createBy;

}

public void setCreateBy(com.lzy.forum.domain.User createBy) {

this.createBy = createBy;

}

public java.lang.Integer getHits() {

return hits;

}

public void setHits(java.lang.Integer hits) {

this.hits = hits;

}

public java.lang.Integer getId() {

return id;

}

public void setId(java.lang.Integer id) {

this.id = id;

}

public com.lzy.forum.domain.User getLastUpdateBy() {

return lastUpdateBy;

}

public void setLastUpdateBy(com.lzy.forum.domain.User lastUpdateBy) {

this.lastUpdateBy = lastUpdateBy;

}

public java.util.Date getLastUpdateTime() {

return lastUpdateTime;

}

public void setLastUpdateTime(java.util.Date lastUpdateTime) {

this.lastUpdateTime = lastUpdateTime;

}

public com.lzy.forum.domain.Article getParent() {

return parent;

}

public void setParent(com.lzy.forum.domain.Article parent) {

this.parent = parent;

}

public java.lang.String getTitle() {

return title;

}

public void setTitle(java.lang.String title) {

this.title = title;

}

public java.util.Date getCreateTime(){

return createTime;

}

public void setCreateTime(java.util.Date createTime) {

// TODO Auto-generated method stub

this.createTime = createTime;

}