BlogJava-VIRGIN FOREST OF JAVA-文章分类-SPRING

acegi in spring

R.Zeus — Wed, 07 Mar 2007 05:24:00 GMT

when read the acgi.xml and according source code,I found the way spring read the value ,on the other hand,how spring choose the editor to resolve the value.
for example,the "filterInvocationDefinitionSource" properties,Spring will choose the class "FilterInvocationDefinitionSourceEditor" to solve the "filterInvocationDefinitionSource".u may notes that
the "FilterInvocationDefinitionSourceEditor" = "filterInvocationDefinitionSource" plus "editor" ignore the case.
That is exactly what Spring do.

in acegi , "filterInvocationDefinitionSource" use to store urls for filering,so when u understand the its struture ,u can
get the url for database,not explicitly.

for the key word " CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON",it means u must
set the properties name lower case,otherwise will be error.

and " PATTERN_TYPE_APACHE_ANT" means use class PathBasedFilterInvocationDefinitionMap,default use
class RegExpBasedFilterInvocationDefinitionMap.

R.Zeus 2007-03-07 13:24 发表评论

CronExpression

R.Zeus — Fri, 24 Nov 2006 06:17:00 GMT

public class CronExpression
extends Object
implements Serializable, Cloneable

Provides a parser and evaluator for unix-like cron expressions. Cron expressions provide the ability to specify complex time combinations such as "At 8:00am every Monday through Friday" or "At 1:30am every last Friday of the month".

Cron expressions are comprised of 6 required fields and one optional field separated by white space. The fields respectively are described as follows:

Field Name	Allowed Values	Allowed Special Characters
`Seconds`	`0-59`	`, - * /`
`Minutes`	`0-59`	`, - * /`
`Hours`	`0-23`	`, - * /`
`Day-of-month`	`1-31`	`, - * ? / L W`
`Month`	`1-12 or JAN-DEC`	`, - * /`
`Day-of-Week`	`1-7 or SUN-SAT`	`, - * ? / L #`
`Year (Optional)`	`empty, 1970-2099`	`, - * /`

The '*' character is used to specify all values. For example, "*" in the minute field means "every minute".

The '?' character is allowed for the day-of-month and day-of-week fields. It is used to specify 'no specific value'. This is useful when you need to specify something in one of the two fileds, but not the other.

The '-' character is used to specify ranges For example "10-12" in the hour field means "the hours 10, 11 and 12".

The ',' character is used to specify additional values. For example "MON,WED,FRI" in the day-of-week field means "the days Monday, Wednesday, and Friday".

The '/' character is used to specify increments. For example "0/15" in the seconds field means "the seconds 0, 15, 30, and 45". And "5/15" in the seconds field means "the seconds 5, 20, 35, and 50". Specifying '*' before the '/' is equivalent to specifying 0 is the value to start with. Essentially, for each field in the expression, there is a set of numbers that can be turned on or off. For seconds and minutes, the numbers range from 0 to 59. For hours 0 to 23, for days of the month 0 to 31, and for months 1 to 12. The "/" character simply helps you turn on every "nth" value in the given set. Thus "7/6" in the month field only turns on month "7", it does NOT mean every 6th month, please note that subtlety.

The 'L' character is allowed for the day-of-month and day-of-week fields. This character is short-hand for "last", but it has different meaning in each of the two fields. For example, the value "L" in the day-of-month field means "the last day of the month" - day 31 for January, day 28 for February on non-leap years. If used in the day-of-week field by itself, it simply means "7" or "SAT". But if used in the day-of-week field after another value, it means "the last xxx day of the month" - for example "6L" means "the last friday of the month". When using the 'L' option, it is important not to specify lists, or ranges of values, as you'll get confusing results.

The 'W' character is allowed for the day-of-month field. This character is used to specify the weekday (Monday-Friday) nearest the given day. As an example, if you were to specify "15W" as the value for the day-of-month field, the meaning is: "the nearest weekday to the 15th of the month". So if the 15th is a Saturday, the trigger will fire on Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th. However if you specify "1W" as the value for day-of-month, and the 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not 'jump' over the boundary of a month's days. The 'W' character can only be specified when the day-of-month is a single day, not a range or list of days.

The 'L' and 'W' characters can also be combined for the day-of-month expression to yield 'LW', which translates to "last weekday of the month".

The '#' character is allowed for the day-of-week field. This character is used to specify "the nth" XXX day of the month. For example, the value of "6#3" in the day-of-week field means the third Friday of the month (day 6 = Friday and "#3" = the 3rd one in the month). Other examples: "2#1" = the first Monday of the month and "4#5" = the fifth Wednesday of the month. Note that if you specify "#5" and there is not 5 of the given day-of-week in the month, then no firing will occur that month.

The legal characters and the names of months and days of the week are not case sensitive.

NOTES:

Support for specifying both a day-of-week and a day-of-month value is not complete (you'll need to use the '?' character in on of these fields).

Author:: Sharada Jambula, James House, Contributions from Mads Henderson, Refactoring from CronTrigger to CronExpression by Aaron Craven

ATTENTION::
it seems the default time between successive task executions is 1 second,so you must set the second otherwise the trigger will be activated continually.

The batchjob can do only when the application is alive.if it's close,the job will
shutdown.for example,in testcase,the batch job will only do once.

R.Zeus 2006-11-24 14:17 发表评论

i18n-fuck the ReloadableResourceBundleMessageSource

R.Zeus — Mon, 23 Oct 2006 12:11:00 GMT

           class="org.springframework.context.support.ReloadableResourceBundleMessageSource">

            com/suzsoft/jportal/usermanagement/acegi/ApplicationMessages_zh_CN




this from the reference,but the ReloadableResourceBundleMessageSource seems never init and i don't konw how to make it work.

at the last ,I use

          class="org.springframework.context.support.ResourceBundleMessageSource">

            com.suzsoft.jportal.usermanagement.acegi.ApplicationMessages



ResourceBundleMessageSource:

setBasename

public void setBasename(String basename)

Set a single basename, following ResourceBundle conventions: It is a fully-qualified classname. If it doesn't contain a package qualifier (such as org.mypackage), it will be resolved from the classpath root.

Messages will normally be held in the /lib or /classes directory of a WAR. They can also be held in Jars on the class path. For example, a Jar in an application's manifest classpath could contain messages for the application.

ReloadableResourceBundleMessageSource:

setBasename

public void setBasename(String basename)

Set a single basename, following the basic ResourceBundle convention of not specifying file extension or language codes, but in contrast to ResourceBundleMessageSource referring to a Spring resource location: e.g. "WEB-INF/messages" for "WEB-INF/messages.properties", "WEB-INF/messages_en.properties", etc.

As of Spring 1.2.2, XML properties files are also supported: e.g. "WEB-INF/messages" will find and load "WEB-INF/messages.xml", "WEB-INF/messages_en.xml", etc as well. Note that this will only work on JDK 1.5+.

R.Zeus 2006-10-23 20:11 发表评论

more server run applicatin on the same database will be error!

R.Zeus — Fri, 20 Oct 2006 05:35:00 GMT

                      if there are more than two server run with the same system code
            and call the save method at the same time ,it will be result of hibernate
            error!because hibernate get the max id for ganerator and store it in
            cache for next time using.so one server will get the expired id if another
            server change the database following.
            befroe save object,hibernate will excute this sql after the server start up once:
             Hibernate: select max(ID) from TB_LOG
            TB_LOG is my log table.

R.Zeus 2006-10-20 13:35 发表评论

java.sql.SQLException: Connection is broken

R.Zeus — Sat, 12 Aug 2006 12:11:00 GMT

WARN - SettingsFactory.buildSettings(103) | Could not obtain connection metadata

java.sql.SQLException: Connection is broken
        at org.hsqldb.jdbc.jdbcUtil.sqlException(Unknown Source)
        at org.hsqldb.jdbc.jdbcStatement.fetchResult(Unknown Source)
        at org.hsqldb.jdbc.jdbcStatement.executeQuery(Unknown Source)
        at org.hsqldb.jdbc.jdbcDatabaseMetaData.execute(Unknown Source)
        at org.hsqldb.jdbc.jdbcDatabaseMetaData.getDatabaseProductName(Unknown S
ource)
        at org.hibernate.cfg.SettingsFactory.buildSettings(SettingsFactory.java:
75)
        at org.hibernate.cfg.Configuration.buildSettings(Configuration.java:1881
)
        at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.jav
a:1174)
        at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSession
Factory(LocalSessionFactoryBean.java:825)

因为我在lib中放了hsqldb-1.7.3.0.jar所以导致了错误！

R.Zeus 2006-08-12 20:11 发表评论

tiles

R.Zeus — Thu, 10 Aug 2006 06:51:00 GMT

<%@ include file=".......Taglibs.jsp" %>
虽然定义的body里有了tag，但是各自的页面还要加，因为这是动态编译以后加载,所以每个页面都应该有！

R.Zeus 2006-08-10 14:51 发表评论

mock

R.Zeus — Fri, 04 Aug 2006 10:56:00 GMT

mock是个模拟测试的东西，她创造的东西都是假的，在数据库测试，网络测试中可以用的很爽！

public class MockPrototypeTestCase extends org.jmock.MockObjectTestCase {
    Mock accountService = null;

    MockPrototype mo = new MockPrototype();
    protected void setUp() throws Exception {
        super.setUp();
        accountService = new Mock(AccountService.class);
//在MockPrototype 要用到AccountService.class，所以这里创建了一个，不过这个不是真实的，是模拟的
        mo.setAccountService((AccountService) accountService.proxy());
    }
    protected void tearDown() throws Exception {
        super.tearDown();
        mo = null;
    }
    public void testloginProcess() {
        Account a = new Account();
        a.setLoginId("aa");
        a.setPassword(StringUtil.encodePassword("bb", Constants.PASSWORD_ENCODING_TYPE));
//这里模拟了      getAccount，即getAccount("aa"),返回a；在mock中没有真实的东西，都是模拟的！
accountService.expects(atLeastOnce()) //注意 atLeastOnce()这个参数，这个指定使用次数，如果是
                .method("getAccount")             //atLeastOnce,则这个method中则至少使用一次，否则会报错！
                .with(eq("aa"))                      //总之，按照定义的函数调用，同时必须遵守规定，如次数！
                .will(returnValue(a));            //在mo的loginProcess()中，会用到这些方法
        accountService.expects(atLeastOnce())
                .method("getAccount")
                .with(eq("cc"))
                .will(returnValue(null));
        mo.loginProcess("aa","bb");
        try {
            mo.loginProcess("cc","bb");
        } catch (FrameworkdemoServiceException e) {
            assertEquals(e.getMessage(),"null.lll"); //To change body of catch statement use File | Settings | File Templates.
        }
    }
}

R.Zeus 2006-08-04 18:56 发表评论

spring service manager

R.Zeus — Fri, 04 Aug 2006 03:36:00 GMT

　
                PROPAGATION_REQUIRED, +FrameworkdemoServiceException
                PROPAGATION_REQUIRED,readOnly


我们还指定，当方法抛出FrameworkdemoServiceException类型的异常时，addLineItem就总是回滚事务。这就达到了另一个粒度级别：在异常场景中，我们的控制可以精细到TX的具体结束方式。前缀符号“-”指定回滚TX，而前缀符号“+”指定提交TX。("-"时，回滚，“+”，不回滚）

事务是否会滚要看每个method的配置！
如果一个事务为+，则它的失败对别的service没有影响！
如果为-，则它的失败对别人有影响！
还要看整个method的属性~！






                PROPAGATION_REQUIRED,+FrameworkdemoServiceException
                PROPAGATION_REQUIRED







                PROPAGATION_REQUIRED,+FrameworkdemoServiceException
                PROPAGATION_REQUIRED,readOnly



方法中的事务才不回滚

key属性确定代理应该给哪个方法增加事务行为。这样的属性最重要的部份是传播行为。有以下选项可供使用：
PROPAGATION_REQUIRED--支持当前事务，如果当前没有事务，就新建一个事务。这是最常见的选择。
PROPAGATION_SUPPORTS--支持当前事务，如果当前没有事务，就以非事务方式执行。
PROPAGATION_MANDATORY--支持当前事务，如果当前没有事务，就抛出异常。
PROPAGATION_REQUIRES_NEW--新建事务，如果当前存在事务，把当前事务挂起。
PROPAGATION_NOT_SUPPORTED--以非事务方式执行操作，如果当前存在事务，就把当前事务挂起。
PROPAGATION_NEVER--以非事务方式执行，如果当前存在事务，则抛出异常。
PROPAGATION_NESTED--如果当前存在事务，则在嵌套事务内执行。如果当前没有事务，则进行与PROPAGATION_REQUIRED类似的操作。

回滚事务中，spring 似乎把bean存到缓存中，等到事务全部处理完，没有会滚，才把bean存入数据库，如果这期间bean有变化，存入的是变化后的bean ，如

Account account1 = new Account();
        account1.setLoginId("prowww1");
propanagationTestAccountService.newAccount(account1);
account1.setLoginId("acodddddddddw1");
最后存入数据库的bean longId 是后面的数据：("acodddddddddw1");

R.Zeus 2006-08-04 11:36 发表评论