1 <mbean code="org.jboss.naming.NamingService"
2 name="jboss:service=Naming"
3 xmbean-dd="resource:xmdesc/NamingService-xmbean.xml">
4 <!-- The call by value mode. true if all lookups are unmarshalled using
5 the caller's TCL, false if in VM lookups return the value by reference.
6 -->
7 <attribute name="CallByValue">false</attribute>
8 <!-- The listening port for the bootstrap JNP service. Set this to -1
9 to run the NamingService without the JNP invoker listening port.
10 -->
11 <attribute name="Port">1099</attribute>
12 <!-- The bootstrap JNP server bind address. This also sets the default
13 RMI service bind address. Empty == all addresses
14 -->
15 <attribute name="BindAddress">${jboss.bind.address}</attribute>
16 <!-- The port of the RMI naming service, 0 == anonymous -->
17 <attribute name="RmiPort">1098</attribute>
18 <!-- The RMI service bind address. Empty == all addresses
19 -->
20 <attribute name="RmiBindAddress">${jboss.bind.address}</attribute>
21 <!-- The thread pool service used to control the bootstrap lookups -->
22 <depends optional-attribute-name="LookupPool"
23 proxy-type="attribute">jboss.system:service=ThreadPool</depends>
24 </mbean>
<attribute name="Port">1099</attribute> 看这里的端口P修改q里的端口号Zprovider_url配置的端口号Q或着反过来修改你的provider_url的端口号里的端口受?br />
2 name="jboss:service=Naming"
3 xmbean-dd="resource:xmdesc/NamingService-xmbean.xml">
4 <!-- The call by value mode. true if all lookups are unmarshalled using
5 the caller's TCL, false if in VM lookups return the value by reference.
6 -->
7 <attribute name="CallByValue">false</attribute>
8 <!-- The listening port for the bootstrap JNP service. Set this to -1
9 to run the NamingService without the JNP invoker listening port.
10 -->
11 <attribute name="Port">1099</attribute>
12 <!-- The bootstrap JNP server bind address. This also sets the default
13 RMI service bind address. Empty == all addresses
14 -->
15 <attribute name="BindAddress">${jboss.bind.address}</attribute>
16 <!-- The port of the RMI naming service, 0 == anonymous -->
17 <attribute name="RmiPort">1098</attribute>
18 <!-- The RMI service bind address. Empty == all addresses
19 -->
20 <attribute name="RmiBindAddress">${jboss.bind.address}</attribute>
21 <!-- The thread pool service used to control the bootstrap lookups -->
22 <depends optional-attribute-name="LookupPool"
23 proxy-type="attribute">jboss.system:service=ThreadPool</depends>
24 </mbean>
2.如果1中配|沒有问题，h查你的防火墙Q杀毒Y件等安全工具是否止了端口，我用的mcafeeQ需要在mcafee的访问保?>属?>用户自定义规则添加一条规则，Ҏ(gu)提示写入需要排除的端口P然后在排除项中添加java.exe和javaw.exe定卛_Q在试试Q应该就可以了！
]]>
@PostLoad 查询之后
@PreUpdate和@PostUpdate q两个分别是在更C前和之后Q不q这两个必须是在PostLoad之后Q对查询出来的数据进行更斎ͼ才会触发
@PreRemove和@PostReomve 分别是删除前和删除后Q官Ҏ(gu)是Object状态变为deleted 状态）
下面是我的例子，当然q里只有关键代码Q?br /> 2010q??2?星期?br />
1 @PrePersist
2 public void logPrePersist() {
3 logger.info("PrePersist " + this.getTitle());
4 }
5
6 @PostPersist
7 public void logPostPersist() {
8 logger.info("PostPersist " + this.getTitle());
9 }
10
11 @PostLoad
12 public void logPostLoad() {
13 logger.info("PostLoad " + this.getTitle());
14 }
15
16 @PreUpdate
17 public void logPreUpdate() {
18 logger.info("PreUpdate " + this.getTitle());
19 }
20
21 @PostUpdate
22 public void logPostUpdate() {
23 logger.info("PostUpdate " + this.getTitle());
24 }
25
26 @PreRemove
27 public void logPreRemove() {
28 logger.info("PreRemove " + this.getTitle());
29 }
30
31 @PostRemove
32 public void logPostRemove() {
33 logger.info("PostRemove " + this.getTitle());
34 }
当然也可以用Entity Listeners
Q如Q?br />
在实体类上加上这个注解：@EntityListeners(value = { MagazineLog.class })2 public void logPrePersist() {
3 logger.info("PrePersist " + this.getTitle());
4 }
5
6 @PostPersist
7 public void logPostPersist() {
8 logger.info("PostPersist " + this.getTitle());
9 }
10
11 @PostLoad
12 public void logPostLoad() {
13 logger.info("PostLoad " + this.getTitle());
14 }
15
16 @PreUpdate
17 public void logPreUpdate() {
18 logger.info("PreUpdate " + this.getTitle());
19 }
20
21 @PostUpdate
22 public void logPostUpdate() {
23 logger.info("PostUpdate " + this.getTitle());
24 }
25
26 @PreRemove
27 public void logPreRemove() {
28 logger.info("PreRemove " + this.getTitle());
29 }
30
31 @PostRemove
32 public void logPostRemove() {
33 logger.info("PostRemove " + this.getTitle());
34 }
然后写MagazineLog.java:
1 public class MagazineLog {
2 /**
3 * Logger for this class
4 */
5 private static final Logger logger = LoggerFactory.getLogger(MagazineLog.class);
6
7 @PrePersist
8 public void logPrePersist(Object pc) {
9 logger.info("PrePersist " + ((Magazine)pc).getTitle());
10 }
11
12 @PostPersist
13 public void logPostPersist(Object pc) {
14 logger.info("PostPersist " + ((Magazine)pc).getTitle());
15 }
16
17 @PostLoad
18 public void logPostLoad(Object pc) {
19 logger.info("PostLoad " + ((Magazine)pc).getTitle());
20 }
21
22 @PreUpdate
23 public void logPreUpdate(Object pc) {
24 logger.info("PreUpdate " + ((Magazine)pc).getTitle());
25 }
26
27 @PostUpdate
28 public void logPostUpdate(Object pc) {
29 logger.info("PostUpdate " + ((Magazine)pc).getTitle());
30 }
31
32 @PreRemove
33 public void logPreRemove(Object pc) {
34 logger.info("PreRemove " + ((Magazine)pc).getTitle());
35 }
36
37 @PostRemove
38 public void logPostRemove(Object pc) {
39 logger.info("PostRemove " + ((Magazine)pc).getTitle());
40 }
41 }
p些，q个比较?br />
2 /**
3 * Logger for this class
4 */
5 private static final Logger logger = LoggerFactory.getLogger(MagazineLog.class);
6
7 @PrePersist
8 public void logPrePersist(Object pc) {
9 logger.info("PrePersist " + ((Magazine)pc).getTitle());
10 }
11
12 @PostPersist
13 public void logPostPersist(Object pc) {
14 logger.info("PostPersist " + ((Magazine)pc).getTitle());
15 }
16
17 @PostLoad
18 public void logPostLoad(Object pc) {
19 logger.info("PostLoad " + ((Magazine)pc).getTitle());
20 }
21
22 @PreUpdate
23 public void logPreUpdate(Object pc) {
24 logger.info("PreUpdate " + ((Magazine)pc).getTitle());
25 }
26
27 @PostUpdate
28 public void logPostUpdate(Object pc) {
29 logger.info("PostUpdate " + ((Magazine)pc).getTitle());
30 }
31
32 @PreRemove
33 public void logPreRemove(Object pc) {
34 logger.info("PreRemove " + ((Magazine)pc).getTitle());
35 }
36
37 @PostRemove
38 public void logPostRemove(Object pc) {
39 logger.info("PostRemove " + ((Magazine)pc).getTitle());
40 }
41 }
]]>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema" /> <!-- q个是自动创?nbsp;-->
<property name="openjpa.Log" value="DefaultLevel=WARN,SQL=TRACE" /> <!-- q是打印SQL语句 -->
q两个是比较常用的属?br />
今天说的是一对多的关联，q里有三个类Q非别是UserQPostQComment他们之间的关pLQUser中有多个Post?
CommentQPost有多个CommentQ而Comment有只有一个User和PostQ这里我׃列出来表l构了，因ؓ可以用JPA的自动生?
?br />
下面是User的关键代?<property name="openjpa.Log" value="DefaultLevel=WARN,SQL=TRACE" /> <!-- q是打印SQL语句 -->
1 @Entity
2 public class User {
3 @Id
4 @GeneratedValue(strategy = GenerationType.SEQUENCE)
5 private int id;
6 private String name;
7 private String password;
8 private String gender;
9 @OneToMany(cascade = CascadeType.ALL)
10 private List<Comment> comments;
11 @OneToMany(cascade = CascadeType.ALL)
12 private List<Post> posts;
13 // ………………
14 }
没有什么可说的Q只说两?br />
1.@GeneratedValue(strategy =
GenerationType.SEQUENCE)q是说ؓid自动生成一个序列，q个选项湖自动在数据库中创徏一个用来生成序列的表，一共有四种2 public class User {
3 @Id
4 @GeneratedValue(strategy = GenerationType.SEQUENCE)
5 private int id;
6 private String name;
7 private String password;
8 private String gender;
9 @OneToMany(cascade = CascadeType.ALL)
10 private List<Comment> comments;
11 @OneToMany(cascade = CascadeType.ALL)
12 private List<Post> posts;
13 // ………………
14 }
-
GeneratorType.AUTO: The default. Assign the field a generated value, leaving the details to the JPA vendor. -
GenerationType.IDENTITY: The database will assign an identity value on insert. -
GenerationType.SEQUENCE: Use a datastore sequence to generate a field value. -
GenerationType.TABLE: Use a sequence table to generate a field value
GenerationValueq有另外一个属性generatorq个我只在AUTO下实验了Q他有下面几U：
-
uuid-string: OpenJPA will generate a 128-bit type 1 UUID unique within the network, represented as a 16-character string. For more information on UUIDs, see the IETF UUID draft specification at: http://www1.ics.uci.edu/~ejw/authoring/uuid-guid/ -
uuid-hex: Same asuuid-string, but represents the type 1 UUID as a 32-character hexadecimal string. -
uuid-type4-string: OpenJPA will generate a 128-bit type 4 pseudo-random UUID, represented as a 16-character string. For more information on UUIDs, see the IETF UUID draft specification at: http://www1.ics.uci.edu/~ejw/authoring/uuid-guid/ -
uuid-type4-hex: Same asuuid-type4-string, but represents the type 4 UUID as a 32-character hexadecimal string.
2.@OneToMany(cascade = CascadeType.ALL),U联Q我q里是所有，U联也是?中（q是考的官方文Q：
-
CascadeType.PERSIST: When persisting an entity, also persist the entities held in this field. We suggest liberal application of this cascade rule, because if theEntityManagerfinds a field that references a new entity during flush, and the field does not useCascadeType.PERSIST, it is an error. -
CascadeType.REMOVE: When deleting an entity, also delete the entities held in this field. -
CascadeType.REFRESH: When refreshing an entity, also refresh the entities held in this field. -
CascadeType.MERGE: When merging entity state, also merge the entities held in this field.
下来是Post和Comment的关键代码：
1 @Entity
2 public class Post {
3 @Id
4 @GeneratedValue(strategy = GenerationType.SEQUENCE)
5 private int id;
6 private Date createDate;
7 private String title;
8 private String content;
9 @ManyToOne(cascade = CascadeType.ALL)
10 private User author;
11 @OneToMany(cascade = CascadeType.ALL)
12 private List<Comment> comments;
13 // ………………
14 }
15
16 @Entity
17 public class Comment {
18 @Id
19 @GeneratedValue(strategy = GenerationType.SEQUENCE)
20 private int id;
21 private Date createDate;
22 private String title;
23 private String content;
24 @ManyToOne(cascade = CascadeType.ALL)
25 private User author;
26 @ManyToOne(cascade = CascadeType.ALL)
27 private Post post;
28 // ………………
29 }
下来的应该没有什么可说的Q下面是我的试代码Q?br />
2 public class Post {
3 @Id
4 @GeneratedValue(strategy = GenerationType.SEQUENCE)
5 private int id;
6 private Date createDate;
7 private String title;
8 private String content;
9 @ManyToOne(cascade = CascadeType.ALL)
10 private User author;
11 @OneToMany(cascade = CascadeType.ALL)
12 private List<Comment> comments;
13 // ………………
14 }
15
16 @Entity
17 public class Comment {
18 @Id
19 @GeneratedValue(strategy = GenerationType.SEQUENCE)
20 private int id;
21 private Date createDate;
22 private String title;
23 private String content;
24 @ManyToOne(cascade = CascadeType.ALL)
25 private User author;
26 @ManyToOne(cascade = CascadeType.ALL)
27 private Post post;
28 // ………………
29 }
1 EntityManagerFactory factory = Persistence.createEntityManagerFactory("test");
2 EntityManager em = factory.createEntityManager();
3 em.getTransaction().begin();
4 User user = new User();
5 user.setName("Innate");
6 user.setPassword("Innate");
7 user.setGender("?/span>");
8 List<Post> posts = new ArrayList<Post>();
9
10 for (int i = 0; i < 5; i++) {
11 Post post = new Post();
12 post.setAuthor(user);
13 post.setContent("test");
14 post.setCreateDate(new Date());
15 post.setTitle("Innate");
16 posts.add(post);
17 List<Comment> comments = new ArrayList<Comment>();
18 for (int j = 0; j < 5; j++) {
19 Comment comment = new Comment();
20 comment.setAuthor(user);
21 comment.setContent("testtest");
22 comment.setCreateDate(new Date());
23 comment.setPost(post);
24 comment.setTitle("InnateInnate");
25 comments.add(comment);
26 }
27 post.setComments(comments);
28 user.setComments(comments);
29 }
30 user.setPosts(posts);
31 em.persist(user);
32 em.getTransaction().commit();
源代码（包含1Q?的）:JTATest.7z2 EntityManager em = factory.createEntityManager();
3 em.getTransaction().begin();
4 User user = new User();
5 user.setName("Innate");
6 user.setPassword("Innate");
7 user.setGender("?/span>");
8 List<Post> posts = new ArrayList<Post>();
9
10 for (int i = 0; i < 5; i++) {
11 Post post = new Post();
12 post.setAuthor(user);
13 post.setContent("test");
14 post.setCreateDate(new Date());
15 post.setTitle("Innate");
16 posts.add(post);
17 List<Comment> comments = new ArrayList<Comment>();
18 for (int j = 0; j < 5; j++) {
19 Comment comment = new Comment();
20 comment.setAuthor(user);
21 comment.setContent("testtest");
22 comment.setCreateDate(new Date());
23 comment.setPost(post);
24 comment.setTitle("InnateInnate");
25 comments.add(comment);
26 }
27 post.setComments(comments);
28 user.setComments(comments);
29 }
30 user.setPosts(posts);
31 em.persist(user);
32 em.getTransaction().commit();
]]>
1 <persistence-unit name="test">
2 <class>cn.is.test.Test</class>
3
4 <properties>
5 <property name="openjpa.ConnectionURL" value="jdbc:mysql://localhost:3306/test" />
6 <property name="openjpa.ConnectionDriverName" value="com.mysql.jdbc.Driver" />
7 <property name="openjpa.ConnectionUserName" value="root" />
8 <property name="openjpa.ConnectionPassword" value="root" />
9 </properties>
10 </persistence-unit>
2 <class>cn.is.test.Test</class>
3
4 <properties>
5 <property name="openjpa.ConnectionURL" value="jdbc:mysql://localhost:3306/test" />
6 <property name="openjpa.ConnectionDriverName" value="com.mysql.jdbc.Driver" />
7 <property name="openjpa.ConnectionUserName" value="root" />
8 <property name="openjpa.ConnectionPassword" value="root" />
9 </properties>
10 </persistence-unit>
q里有个问题Q我一般用mysql驱动的org.gjt.mm.mysql.Driverq个驱动c，但是在这里，q行的时候报驱动cL着q接URL错误
下面的是实体c?br />
1 package cn.is.test;
2
3 import java.io.Serializable;
4 import javax.persistence.Entity;
5 import javax.persistence.Id;
6
7 @Entity
8 public class Test implements Serializable {
9 @Id
10 private String id;
11
12 private String userName;
13
14 private String password;
15
16 private String sex;
17
18 private static final long serialVersionUID = 1L;
19
20 public Test() {
21 super();
22 }
23
24 public String getId() {
25 return this.id;
26 }
27
28 public void setId(String id) {
29 this.id = id;
30 }
31
32 public String getUserName() {
33 return this.userName;
34 }
35
36 public void setUserName(String username) {
37 this.userName = username;
38 }
39
40 public String getPassword() {
41 return this.password;
42 }
43
44 public void setPassword(String password) {
45 this.password = password;
46 }
47
48 public String getSex() {
49 return this.sex;
50 }
51
52 public void setSex(String sex) {
53 this.sex = sex;
54 }
55
56
57
58 }
59
2
3 import java.io.Serializable;
4 import javax.persistence.Entity;
5 import javax.persistence.Id;
6
7 @Entity
8 public class Test implements Serializable {
9 @Id
10 private String id;
11
12 private String userName;
13
14 private String password;
15
16 private String sex;
17
18 private static final long serialVersionUID = 1L;
19
20 public Test() {
21 super();
22 }
23
24 public String getId() {
25 return this.id;
26 }
27
28 public void setId(String id) {
29 this.id = id;
30 }
31
32 public String getUserName() {
33 return this.userName;
34 }
35
36 public void setUserName(String username) {
37 this.userName = username;
38 }
39
40 public String getPassword() {
41 return this.password;
42 }
43
44 public void setPassword(String password) {
45 this.password = password;
46 }
47
48 public String getSex() {
49 return this.sex;
50 }
51
52 public void setSex(String sex) {
53 this.sex = sex;
54 }
55
56
57
58 }
59
下来的是试代码Q?br />
1 EntityManagerFactory factory = Persistence.createEntityManagerFactory("test");
2 EntityManager em = factory.createEntityManager();
3 Test test = new Test();
4 test.setId(UUID.randomUUID().toString());
5 test.setSex("?/span>");
6 test.setUserName("Innate");
7 test.setPassword("solitary");
8
9 em.getTransaction().begin();
10
11 em.persist(test);
12
13 em.getTransaction().commit();
14
15 em.close();
16
17 em = factory.createEntityManager();
18
19 Query query = em.createQuery("select t from Test t");
20 List<Test> testList = query.getResultList();
21
22 for (Test _test : testList) {
23 System.out.println(_test.getUserName());
24 }
25
26 em.close();
27 factory.close();
2 EntityManager em = factory.createEntityManager();
3 Test test = new Test();
4 test.setId(UUID.randomUUID().toString());
5 test.setSex("?/span>");
6 test.setUserName("Innate");
7 test.setPassword("solitary");
8
9 em.getTransaction().begin();
10
11 em.persist(test);
12
13 em.getTransaction().commit();
14
15 em.close();
16
17 em = factory.createEntityManager();
18
19 Query query = em.createQuery("select t from Test t");
20 List<Test> testList = query.getResultList();
21
22 for (Test _test : testList) {
23 System.out.println(_test.getUserName());
24 }
25
26 em.close();
27 factory.close();
]]>