Ext.override(Ext.grid.CellSelectionModel, {
onEditorKey : function(field, e) {
var smodel = this;
var k = e.getKey(), newCell, g = smodel.grid, ed = g.activeEditor;
switch(k){
case e.TAB:
e.stopEvent();
ed.completeEdit();
if (e.shiftKey) {
newCell = g.walkCells(ed.row, ed.col-1, -1, smodel.acceptsNav, smodel);
} else {
newCell = g.walkCells(ed.row, ed.col+1, 1, smodel.acceptsNav, smodel);
}
if (ed.col == 1) {
if (e.shiftKey) {
newCell = g.walkCells(ed.row, ed.col+1, -1, smodel.acceptsNav, smodel);
} else {
newCell = g.walkCells(ed.row, ed.col+1, 1, smodel.acceptsNav, smodel);
}
}
break;
case e.UP:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row-1, ed.col, -1, smodel.acceptsNav, smodel);
break;
case e.DOWN:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row+1, ed.col, 1, smodel.acceptsNav, smodel);
break;
case e.LEFT:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row, ed.col-1, -1, smodel.acceptsNav, smodel);
break;
case e.RIGHT:
e.stopEvent();
ed.completeEdit();
newCell = g.walkCells(ed.row, ed.col+1, 1, smodel.acceptsNav, smodel);
break;
}
if (newCell) {
g.startEditing(newCell[0], newCell[1]);
}
}
});
]]>
]]>
大家可以参考下q个|站http://eoffice.im.fju.edu.tw/phpbb/viewtopic.php?p=28685
2.SSH2框架和h2数据库整合方?br /> 2.1先在数据库下创徏 schema目录(相当于一个数据库实例)
create schema fdrkftcode
目的是解册U异?span style="color:red">org.h2.jdbc.JdbcSQLException: Schema "fdrkftcode" not found; ...
create table fdrkftcode.admin(
id int primary key,
adminname varchar(50),
username varchar(50),
userpwd varchar(50),
adminrights varchar(50),
createdate datetime,
usedtimes int,
lastlogin datetime,
curstatus int,
remark varchar(200)
)
3.Z使用hibernate操作h2Q需要作如下讄Q在sql~辑H口输入下面q些脚本
对于实体pojo对象的映，我是用的annotationQ关键是id主键的映，如下Q?br /> @Column(name = "ID", nullable = false)
@Id
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "ABC_ID_SEQ")
@SequenceGenerator(name = "ABC_ID_SEQ", sequenceName = "ABC_ID_SEQ")
protected Long id;
注意q里的GeneratedValue和SequenceGenerator的用，q属于JPA规范Q全部来自javax.persisten
4.配置applicationContext.xml文g,主要有三个地方要注意Q?br /> 4.1修改q接数据库的JDBC驱动 driverClass的gؓorg.h2.Driver
4.2修改q接数据库所用的URL字符?jdbcUrl的gؓjdbc:h2:tcp://localhost/~/FDRKFTCODE;MODE=MySQL;AUTO_SERVER=TRUE
4.3修改Hibernate的数据库方言hibernate.dialect为org.hibernate.dialect.H2Dialect
5.h2数据库一些常用操?br /> 5.1帮助命ohelp
5.2表中某字D重命名 ALTER TABLE fdrkftcode.admin ALTER COLUMN usepwd rename to userpwd
5.3表中新增字段 ALTER TABLE fdrkftcode.admin ADD IF NOT EXISTS abc varchar(50)
5.4表中删除字段 ALTER TABLE fdrkftcode.admin DROP COLUMN IF EXISTS abc
5.5查找表中记录 SELECT * from fdrkftcode.admin
5.6往表中插入记录 INSERT INTO fdrkftcode.admin VALUES (1,'理?,'admin','admin','10000000000000000000','2013-05-1 00:12:34',3,'2013-05-1 15:32:57',1,'过U管理员')
5.7修改表中某记?UPDATE fdrkftcode.admin SET fdrkftcode.admin.adminname='理? where fdrkftcode.admin.id=1
5.8删除表中某记?DELETE FROM fdrkftcode.admin WHERE fdrkftcode.admin.id=1
6.下面是我目的applicationContext.xml配置ҎQ大家可以参考下
<?xml version="1.0" encoding="UTF-8"?><beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<!-- 定义使用C3P0q接池的数据?-->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<!-- 指定q接数据库的JDBC驱动 -->
<property name="driverClass">
<value>org.h2.Driver</value>
</property>
<!-- q接数据库所用的URL -->
<property name="jdbcUrl">
<value>jdbc:h2:tcp://localhost/~/FDRKFTCODE;MODE=MySQL;AUTO_SERVER=TRUE</value>
</property>
<!-- q接数据库的用户?-->
<property name="user">
<value>sa</value>
</property>
<!-- q接数据库的密码 -->
<property name="password">
<value></value>
</property>
<!-- 讄数据库连接池的最大连接数 -->
<property name="maxPoolSize">
<value>50</value>
</property>
<!-- 讄数据库连接池的最连接数 -->
<property name="minPoolSize">
<value>5</value>
</property>
<!-- 讄数据库连接池的初始化q接?-->
<property name="initialPoolSize">
<value>5</value>
</property>
<!-- 讄数据库连接池的连接的最大空闲时?单位为秒 -->
<property name="maxIdleTime">
<value>20</value>
</property>
</bean>
<!-- 定义Hibernate的SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<!-- 依赖注入上面定义的数据源dataSource -->
<property name="dataSource" ref="dataSource"/>
<!-- 注册Hibernate的ORM映射文g -->
<property name="mappingResources">
<list>
<value>com/sungoal/ORM/Admin.hbm.xml</value>
</list>
</property>
<!-- 讄Hibernate的相兛_?-->
<property name="hibernateProperties">
<props>
<!-- 讄Hibernate的数据库方言 -->
<prop key="hibernate.dialect">org.hibernate.dialect.H2Dialect</prop>
<!-- 讄Hibernate是否在控制台输出SQL语句Q开发调试阶D通常设ؓtrue -->
<prop key="show_sql">true</prop>
<!-- 讄Hibernate一个提交批ơ中的最大SQL语句?-->
<prop key="hibernate.jdbc.batch_size">50</prop>
</props>
</property>
</bean>
<!--定义Hibernate的事务管理器HibernateTransactionManager -->
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<!-- 依赖注入上面定义的sessionFactory -->
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- 装配通用数据库访问类BaseDAOImpl -->
<bean id="dao" class="com.sungoal.DAO.BaseDAOImpl">
<!-- 依赖注入上面定义的sessionFactory -->
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<!-- 部vpȝ用户理业务控制器AdminAction -->
<bean id="adminAction" class="com.sungoal.struts.action.AdminAction" scope="prototype">
<property name="dao" ref="dao"/>
</bean>
</beans>
]]>
hibernate.properties
######################
### Query Language ###
######################
## define query language constants / function names
hibernate.query.substitutions yes 'Y', no 'N'
## select the classic query parser
#hibernate.query.factory_class org.hibernate.hql.classic.ClassicQueryTranslatorFactory
#################
### Platforms ###
#################
## JNDI Datasource
#hibernate.connection.datasource jdbc/test
#hibernate.connection.username db2
#hibernate.connection.password db2
## HypersonicSQL
hibernate.dialect org.hibernate.dialect.HSQLDialect
hibernate.connection.driver_class org.hsqldb.jdbcDriver
hibernate.connection.username sa
hibernate.connection.password
hibernate.connection.url jdbc:hsqldb:./build/db/hsqldb/hibernate
#hibernate.connection.url jdbc:hsqldb:hsql://localhost
#hibernate.connection.url jdbc:hsqldb:test
## H2 (www.h2database.com)
#hibernate.dialect org.hibernate.dialect.H2Dialect
#hibernate.connection.driver_class org.h2.Driver
#hibernate.connection.username sa
#hibernate.connection.password
#hibernate.connection.url jdbc:h2:mem:./build/db/h2/hibernate
#hibernate.connection.url jdbc:h2:testdb/h2test
#hibernate.connection.url jdbc:h2:mem:imdb1
#hibernate.connection.url jdbc:h2:tcp://dbserv:8084/sample;
#hibernate.connection.url jdbc:h2:ssl://secureserv:8085/sample;
#hibernate.connection.url jdbc:h2:ssl://secureserv/testdb;cipher=AES
## MySQL
#hibernate.dialect org.hibernate.dialect.MySQLDialect
#hibernate.dialect org.hibernate.dialect.MySQLInnoDBDialect
#hibernate.dialect org.hibernate.dialect.MySQLMyISAMDialect
#hibernate.connection.driver_class com.mysql.jdbc.Driver
#hibernate.connection.url jdbc:mysql:///test
#hibernate.connection.username gavin
#hibernate.connection.password
## Oracle
#hibernate.dialect org.hibernate.dialect.OracleDialect
#hibernate.dialect org.hibernate.dialect.Oracle9Dialect
#hibernate.connection.driver_class oracle.jdbc.driver.OracleDriver
#hibernate.connection.username ora
#hibernate.connection.password ora
#hibernate.connection.url jdbc:oracle:thin:@localhost:1521:orcl
#hibernate.connection.url jdbc:oracle:thin:@localhost:1522:XE
## PostgreSQL
#hibernate.dialect org.hibernate.dialect.PostgreSQLDialect
#hibernate.connection.driver_class org.postgresql.Driver
#hibernate.connection.url jdbc:postgresql:template1
#hibernate.connection.username pg
#hibernate.connection.password
## DB2
#hibernate.dialect org.hibernate.dialect.DB2Dialect
#hibernate.connection.driver_class com.ibm.db2.jcc.DB2Driver
#hibernate.connection.driver_class COM.ibm.db2.jdbc.app.DB2Driver
#hibernate.connection.url jdbc:db2://localhost:50000/somename
#hibernate.connection.url jdbc:db2:somename
#hibernate.connection.username db2
#hibernate.connection.password db2
## TimesTen
#hibernate.dialect org.hibernate.dialect.TimesTenDialect
#hibernate.connection.driver_class com.timesten.jdbc.TimesTenDriver
#hibernate.connection.url jdbc:timesten:direct:test
#hibernate.connection.username
#hibernate.connection.password
## DB2/400
#hibernate.dialect org.hibernate.dialect.DB2400Dialect
#hibernate.connection.username user
#hibernate.connection.password password
## Native driver
#hibernate.connection.driver_class COM.ibm.db2.jdbc.app.DB2Driver
#hibernate.connection.url jdbc:db2://systemname
## Toolbox driver
#hibernate.connection.driver_class com.ibm.as400.access.AS400JDBCDriver
#hibernate.connection.url jdbc:as400://systemname
## Derby (not supported!)
#hibernate.dialect org.hibernate.dialect.DerbyDialect
#hibernate.connection.driver_class org.apache.derby.jdbc.EmbeddedDriver
#hibernate.connection.username
#hibernate.connection.password
#hibernate.connection.url jdbc:derby:build/db/derby/hibernate;create=true
## Sybase
#hibernate.dialect org.hibernate.dialect.SybaseDialect
#hibernate.connection.driver_class com.sybase.jdbc2.jdbc.SybDriver
#hibernate.connection.username sa
#hibernate.connection.password sasasa
#hibernate.connection.url jdbc:sybase:Tds:co3061835-a:5000/tempdb
## Mckoi SQL
#hibernate.dialect org.hibernate.dialect.MckoiDialect
#hibernate.connection.driver_class com.mckoi.JDBCDriver
#hibernate.connection.url jdbc:mckoi:///
#hibernate.connection.url jdbc:mckoi:local://C:/mckoi1.0.3/db.conf
#hibernate.connection.username admin
#hibernate.connection.password nimda
## SAP DB
#hibernate.dialect org.hibernate.dialect.SAPDBDialect
#hibernate.connection.driver_class com.sap.dbtech.jdbc.DriverSapDB
#hibernate.connection.url jdbc:sapdb://localhost/TST
#hibernate.connection.username TEST
#hibernate.connection.password TEST
#hibernate.query.substitutions yes 'Y', no 'N'
## MS SQL Server
#hibernate.dialect org.hibernate.dialect.SQLServerDialect
#hibernate.connection.username sa
#hibernate.connection.password sa
## JSQL Driver
#hibernate.connection.driver_class com.jnetdirect.jsql.JSQLDriver
#hibernate.connection.url jdbc:JSQLConnect://1E1/test
## JTURBO Driver
#hibernate.connection.driver_class com.newatlanta.jturbo.driver.Driver
#hibernate.connection.url jdbc:JTurbo://1E1:1433/test
## WebLogic Driver
#hibernate.connection.driver_class weblogic.jdbc.mssqlserver4.Driver
#hibernate.connection.url jdbc:weblogic:mssqlserver4:1E1:1433
## Microsoft Driver (not recommended!)
#hibernate.connection.driver_class com.microsoft.jdbc.sqlserver.SQLServerDriver
#hibernate.connection.url jdbc:microsoft:sqlserver://1E1;DatabaseName=test;SelectMethod=cursor
## The New Microsoft Driver
#hibernate.connection.driver_class com.microsoft.sqlserver.jdbc.SQLServerDriver
#hibernate.connection.url jdbc:sqlserver://localhost
## jTDS (since version 0.9)
#hibernate.connection.driver_class net.sourceforge.jtds.jdbc.Driver
#hibernate.connection.url jdbc:jtds:sqlserver://1E1/test
## Interbase
#hibernate.dialect org.hibernate.dialect.InterbaseDialect
#hibernate.connection.username sysdba
#hibernate.connection.password masterkey
## DO NOT specify hibernate.connection.sqlDialect
## InterClient
#hibernate.connection.driver_class interbase.interclient.Driver
#hibernate.connection.url jdbc:interbase://localhost:3060/C:/firebird/test.gdb
## Pure Java
#hibernate.connection.driver_class org.firebirdsql.jdbc.FBDriver
#hibernate.connection.url jdbc:firebirdsql:localhost/3050:/firebird/test.gdb
## Pointbase
#hibernate.dialect org.hibernate.dialect.PointbaseDialect
#hibernate.connection.driver_class com.pointbase.jdbc.jdbcUniversalDriver
#hibernate.connection.url jdbc:pointbase:embedded:sample
#hibernate.connection.username PBPUBLIC
#hibernate.connection.password PBPUBLIC
## Ingres
## older versions (before Ingress 2006)
#hibernate.dialect org.hibernate.dialect.IngresDialect
#hibernate.connection.driver_class ca.edbc.jdbc.EdbcDriver
#hibernate.connection.url jdbc:edbc://localhost:II7/database
#hibernate.connection.username user
#hibernate.connection.password password
## Ingres 2006 or later
#hibernate.dialect org.hibernate.dialect.IngresDialect
#hibernate.connection.driver_class com.ingres.jdbc.IngresDriver
#hibernate.connection.url jdbc:ingres://localhost:II7/database;CURSOR=READONLY;auto=multi
#hibernate.connection.username user
#hibernate.connection.password password
## Mimer SQL
#hibernate.dialect org.hibernate.dialect.MimerSQLDialect
#hibernate.connection.driver_class com.mimer.jdbc.Driver
#hibernate.connection.url jdbc:mimer:multi1
#hibernate.connection.username hibernate
#hibernate.connection.password hibernate
## InterSystems Cache
#hibernate.dialect org.hibernate.dialect.Cache71Dialect
#hibernate.connection.driver_class com.intersys.jdbc.CacheDriver
#hibernate.connection.username _SYSTEM
#hibernate.connection.password SYS
#hibernate.connection.url jdbc:Cache://127.0.0.1:1972/HIBERNATE
#################################
### Hibernate Connection Pool ###
#################################
hibernate.connection.pool_size 1
###########################
### C3P0 Connection Pool###
###########################
#hibernate.c3p0.max_size 2
#hibernate.c3p0.min_size 2
#hibernate.c3p0.timeout 5000
#hibernate.c3p0.max_statements 100
#hibernate.c3p0.idle_test_period 3000
#hibernate.c3p0.acquire_increment 2
#hibernate.c3p0.validate false
##############################
### Proxool Connection Pool###
##############################
## Properties for external configuration of Proxool
hibernate.proxool.pool_alias pool1
## Only need one of the following
#hibernate.proxool.existing_pool true
#hibernate.proxool.xml proxool.xml
#hibernate.proxool.properties proxool.properties
#################################
### Plugin ConnectionProvider ###
#################################
## use a custom ConnectionProvider (if not set, Hibernate will choose a built-in ConnectionProvider using hueristics)
#hibernate.connection.provider_class org.hibernate.connection.DriverManagerConnectionProvider
#hibernate.connection.provider_class org.hibernate.connection.DatasourceConnectionProvider
#hibernate.connection.provider_class org.hibernate.connection.C3P0ConnectionProvider
#hibernate.connection.provider_class org.hibernate.connection.ProxoolConnectionProvider
#######################
### Transaction API ###
#######################
## Enable automatic flush during the JTA beforeCompletion() callback
## (This setting is relevant with or without the Transaction API)
#hibernate.transaction.flush_before_completion
## Enable automatic session close at the end of transaction
## (This setting is relevant with or without the Transaction API)
#hibernate.transaction.auto_close_session
## the Transaction API abstracts application code from the underlying JTA or JDBC transactions
#hibernate.transaction.factory_class org.hibernate.transaction.JTATransactionFactory
#hibernate.transaction.factory_class org.hibernate.transaction.JDBCTransactionFactory
## to use JTATransactionFactory, Hibernate must be able to locate the UserTransaction in JNDI
## default is java:comp/UserTransaction
## you do NOT need this setting if you specify hibernate.transaction.manager_lookup_class
#jta.UserTransaction jta/usertransaction
#jta.UserTransaction javax.transaction.UserTransaction
#jta.UserTransaction UserTransaction
## to use the second-level cache with JTA, Hibernate must be able to obtain the JTA TransactionManager
#hibernate.transaction.manager_lookup_class org.hibernate.transaction.JBossTransactionManagerLookup
#hibernate.transaction.manager_lookup_class org.hibernate.transaction.WeblogicTransactionManagerLookup
#hibernate.transaction.manager_lookup_class org.hibernate.transaction.WebSphereTransactionManagerLookup
#hibernate.transaction.manager_lookup_class org.hibernate.transaction.OrionTransactionManagerLookup
#hibernate.transaction.manager_lookup_class org.hibernate.transaction.ResinTransactionManagerLookup
##############################
### Miscellaneous Settings ###
##############################
## print all generated SQL to the console
#hibernate.show_sql true
## format SQL in log and console
hibernate.format_sql true
## add comments to the generated SQL
#hibernate.use_sql_comments true
## generate statistics
#hibernate.generate_statistics true
## auto schema export
#hibernate.hbm2ddl.auto create-drop
#hibernate.hbm2ddl.auto create
#hibernate.hbm2ddl.auto update
#hibernate.hbm2ddl.auto validate
## specify a default schema and catalog for unqualified tablenames
#hibernate.default_schema test
#hibernate.default_catalog test
## enable ordering of SQL UPDATEs by primary key
#hibernate.order_updates true
## set the maximum depth of the outer join fetch tree
hibernate.max_fetch_depth 1
## set the default batch size for batch fetching
#hibernate.default_batch_fetch_size 8
## rollback generated identifier values of deleted entities to default values
#hibernate.use_identifer_rollback true
## enable bytecode reflection optimizer (disabled by default)
#hibernate.bytecode.use_reflection_optimizer true
#####################
### JDBC Settings ###
#####################
## specify a JDBC isolation level
#hibernate.connection.isolation 4
## enable JDBC autocommit (not recommended!)
#hibernate.connection.autocommit true
## set the JDBC fetch size
#hibernate.jdbc.fetch_size 25
## set the maximum JDBC 2 batch size (a nonzero value enables batching)
#hibernate.jdbc.batch_size 5
#hibernate.jdbc.batch_size 0
## enable batch updates even for versioned data
hibernate.jdbc.batch_versioned_data true
## enable use of JDBC 2 scrollable ResultSets (specifying a Dialect will cause Hibernate to use a sensible default)
#hibernate.jdbc.use_scrollable_resultset true
## use streams when writing binary types to / from JDBC
hibernate.jdbc.use_streams_for_binary true
## use JDBC 3 PreparedStatement.getGeneratedKeys() to get the identifier of an inserted row
#hibernate.jdbc.use_get_generated_keys false
## choose a custom JDBC batcher
# hibernate.jdbc.factory_class
## enable JDBC result set column alias caching
## (minor performance enhancement for broken JDBC drivers)
# hibernate.jdbc.wrap_result_sets
## choose a custom SQL exception converter
#hibernate.jdbc.sql_exception_converter
##########################
### Second-level Cache ###
##########################
## optimize chache for minimal "puts" instead of minimal "gets" (good for clustered cache)
#hibernate.cache.use_minimal_puts true
## set a prefix for cache region names
hibernate.cache.region_prefix hibernate.test
## disable the second-level cache
#hibernate.cache.use_second_level_cache false
## enable the query cache
#hibernate.cache.use_query_cache true
## store the second-level cache entries in a more human-friendly format
#hibernate.cache.use_structured_entries true
## choose a cache implementation
#hibernate.cache.provider_class org.hibernate.cache.EhCacheProvider
#hibernate.cache.provider_class org.hibernate.cache.EmptyCacheProvider
hibernate.cache.provider_class org.hibernate.cache.HashtableCacheProvider
#hibernate.cache.provider_class org.hibernate.cache.TreeCacheProvider
#hibernate.cache.provider_class org.hibernate.cache.OSCacheProvider
#hibernate.cache.provider_class org.hibernate.cache.SwarmCacheProvider
## choose a custom query cache implementation
#hibernate.cache.query_cache_factory
############
### JNDI ###
############
## specify a JNDI name for the SessionFactory
#hibernate.session_factory_name hibernate/session_factory
## Hibernate uses JNDI to bind a name to a SessionFactory and to look up the JTA UserTransaction;
## if hibernate.jndi.* are not specified, Hibernate will use the default InitialContext() which
## is the best approach in an application server
#file system
#hibernate.jndi.class com.sun.jndi.fscontext.RefFSContextFactory
#hibernate.jndi.url file:/
#WebSphere
#hibernate.jndi.class com.ibm.websphere.naming.WsnInitialContextFactory
#hibernate.jndi.url iiop://localhost:900/
]]>
]]>
package edu.hxraid;
import java.io.*;
public class Resource {
public void getResource() throws IOException{
File file=new File("bin/resource/res.txt");
BufferedReader br=new BufferedReader(new FileReader(file));
String s="";
while((s=br.readLine())!=null)
System.out.println(s);
}
}
1、src/
src/edu/hxraid/Resource.java
2、bin/
bin/resource/res.txt
bin/edu/hxraid/Resource.class
很显然运行源代码1是能够找到资源文件res.txt。但当我们把整个工程打成jar包以?ResourceJar.jar)Q这个jar包内的目录ؓQ?br /> edu/hxraid/Resource.class
resource/res.txt
而这时jar包中Resource.class字节 码：ldc <String "bin/resource/res.txt"> [20] 无法定位到jar包中的res.txt位置上。就把bin/目录LQldc <String "resource/res.txt"> [20] 仍然无法定位到jar包中res.txt上?/span>
当然不是Q我们可以用c装载器(ClassLoader)来做到这一点：
(1) ClassLoader 是类加蝲器的抽象cR它可以在运行时动态的获取加蝲cȝq行信息?/span> 可以q样_当我们调用ResourceJar.jar中的ResourcecLQJVM加蝲qResourcec，q记录下Resourceq行时信?(包括Resource所在jar包的路径信息)。而ClassLoadercM的方法可以帮助我们动态的获取q些信息:
● public URL getResource(String name)
查找hl定名称的资源。资源是可以通过cM码以与代码基无关的方式访问的一些数?囑փ、声韟뀁文本等)。ƈq回资源的URL对象?br /> ● public InputStream getResourceAsStream(String name);
q回d指定资源的输入流?span style="color: #000080;">q个Ҏ很重要，可以直接获得jar包中文g的内宏V?/span>
(2) ClassLoader是abstract的，不可能实例化对象Q更加不可能通过ClassLoader调用上面两个Ҏ?strong>所以我们真正写代码的时候，是通过ClasscM的getResource()和getResourceAsStream()ҎQ这两个Ҏ会委托ClassLoader中的getResource()和getResourceAsStream()Ҏ 。好了，现在我们重新写一DResource代码,来看看上面那D费解的话是什么意思了Q?/span>
package edu.hxraid;
import java.io.*;
import java.net.URL;
public class Resource {
public void getResource() throws IOException{
//查找指定资源的URLQ其中res.txt仍然开始的bin目录?nbsp;
URL fileURL=this.getClass().getResource("/resource/res.txt");
System.out.println(fileURL.getFile());
}
public static void main(String[] args) throws IOException {
Resource res=new Resource();
res.getResource();
}
}
我们这D代码打包成ResourceJar.jar ,q将ResourceJar.jar攑֜其他路径?比如 c:\ResourceJar.jar)。然后另外创Z个java projectq导入ResourceJar.jarQ写一D调用jar包中Resourcecȝ试代码Q?/span>
import edu.hxraid.Resource;
public class TEST {
public static void main(String[] args) throws IOException {
Resource res=new Resource();
res.getResource();
}
}
当然不可能，因ؓ".../ResourceJar.jar!/resource/...."q不是文件资源定位符的格?(jar中资源有其专门的URL形式Q?/span> jar:<url>!/{entry} )。所以，如果jar包中的类源代码用File f=new File(相对路径);的Ş式，是不可能定位到文件资源的。这也是Z么源代码1打包成jar文g后，调用jar包时会报出FileNotFoundException的症l所在了?/span>
(3) 我们不能用常规操作文件的Ҏ来读取ResourceJar.jar中的资源文gres.txtQ?strong>但可以通过ClasscȝgetResourceAsStream()Ҏ来获?/span> Q这U方法是如何djar中的资源文g的，q一点对于我们来说是透明的。我们将Resource.java改写成：
package edu.hxraid;
import java.io.*;
public class Resource {
public void getResource() throws IOException{
//q回d指定资源的输入流
InputStream is=this.getClass().getResourceAsStream("/resource/res.txt");
BufferedReader br=new BufferedReader(new InputStreamReader(is));
String s="";
while((s=br.readLine())!=null)
System.out.println(s);
}
}
原文Q?div>http://www.iteye.com/topic/483115
]]>
2 @Table(name="T_ADM_USER")
3 public class User extends GenericEntity implements Serializable {
4
5 @OneToOne(cascade = CascadeType.PERSIST)
6 @JoinColumn(name="grade_id")
7 public Grade getGrade() {
8 return grade;
9 }
10 public void setGrade(Grade grade) {
11 this.grade = grade;
12 }
13 @Column(name="user_name", insertable = true, updatable = true, nullable = true)
14 public String getUsername() {
15 return username;
16 }
17 public void setUsername(String username) {
18 this.username = username;
19 }
20
21 }
2
3 public static void main(String[] args) {
4 try{
5
6 AnnotationConfiguration cfg = new AnnotationConfiguration();
7 cfg.addAnnotatedClass(com.mygogo.grade.user.entity.User.class);
9 SchemaExport se = new SchemaExport(cfg);
10 se.setDelimiter(";");
11 se.drop(true, true);
12 se.create(true, true);
13 }catch(Exception e){
14 e.printStackTrace();
15 }
16
17 }
18 }
]]>