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writer

aimy — Tue, 12 Dec 2006 04:16:00 GMT

注意writer的参数有多个,特别是有一个boolean的参数决定刷新或在附加文�?/p>

            log =    new PrintWriter( new FileOutputStream(fl, true ), true );
            SimpleDateFormat df = new SimpleDateFormat( " yyyy.MM.dd 'at' hh:mm:ss\n " );
            Date now = new Date();
            String dateformat = df.format(now)
            BufferedWriter bf   = new BufferedWriter( new FileWriter(fl, true ));
            bf.append(dateformat);
            bf.close();
            log.println( " start connection databse: " );
            log.println( " driver name: " .concat(driveName);

输出的结果示�?

2006.12.12 at 10:21:13
start connection databse:
driver name:oracle.jdbc.driver.OracleDriver

aimy 2006-12-12 12:16 发表评论

工作��的错误

aimy — Sun, 09 Jul 2006 08:17:00 GMT

1、org.hibernate.ObjectNotFoundException: No row with the given identifier exists: [com.xindeco.business.pojo.NonageRegister#82]
at org.hibernate.ObjectNotFoundException.throwIfNull(ObjectNotFoundException.java:27)
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:65)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at org.apache.catalina.core.ApplicationDispatcher.forward

错误的原因：
在nonregsiter中已�l�手动删除了id=�?2’的记录�Q�而在WF_task以及wf-proces中还有bizclass = '3' && bizId = '82'的记�?只要删除wf-task中相应的记录.

aimy 2006-07-09 16:17 发表评论

aimy — Thu, 06 Jul 2006 02:37:00 GMT

ProcessInstance.hbm.xml�Q?/p>

xml version = " 1.0 " encoding = " UTF-8 " ?>

DOCTYPE hibernate - mapping PUBLIC
     " -//Hibernate/Hibernate Mapping DTD 3.0//EN "
     " http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd " >

< hibernate - mapping
>
     < class
        name = " com.xindeco.workflow.ProcessInstance "
        table = " WF_PROCESS "
        dynamic - update = " true "
        dynamic - insert = " true "
        select - before - update = " false "
        optimistic - lock = " version "
     >

         < id
            name = " ID "
            column = " ID "
            type = " long "
            length = " 30 "
         >
             < generator class = " native " >
             generator >
         id >

         < discriminator
            column = " bizClass "
            type = " string "
         />

         < property
            name = " state "
            type = " java.lang.Integer "
            update = " true "
            insert = " true "
            access = " property "
            column = " state "
            length = " 10 "
         />

         < many - to - one
            name = " flow "
             class = " com.xindeco.workflow.WFFlow "
            cascade = " none "
            outer - join = " auto "
            update = " true "
            insert = " true "
            access = " property "
            column = " flowId "
         />

         < set
            name = " tasks "
            lazy = " true "
            inverse = " true "
            cascade = " delete "
            sort = " unsorted "
         >

               < key
                  column = " processId "
               >
               key >

               < one - to - many
                   class = " com.xindeco.workflow.WFTask "
               />

         set >

     class >

hibernate - mapping >

CollRegPI.hbm.xml�Q?br />

xml version="1.0"?>
DOCTYPE hibernate-mapping PUBLIC
      "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
          "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping default-access="field" >

  <subclass name="com.xindeco.business.pojo.wf.CollRegPI"
            discriminator-value="2"
            extends="com.xindeco.workflow.ProcessInstance"
            lazy="false">

            <many-to-one name="collReg"
                 class="com.xindeco.business.pojo.CollReg"
                 column="bizId"
                 cascade="none"/>
subclass>
hibernate-mapping>

数据库的数据�Q?br />

     id    flowid    bizId   bizClass   state
  21      2          9          2              0
22         2         10         2             0
23         2         11         2              0
24         2         12         2              0
25         2         13         2              0
26         2         14         2              0
29         2         17         2             0
30         2         18         2            1
44         4         1          32             0
45         4       2           32             1
46         5          1          33             0
47       5          2           33             1
48        5          3           33             0
50      3          1            3              0
51      3         1            3              0

如果bizclass=2是同一�U�类型的class。由
         <discriminator
            column="bizClass"
            type="string"
        />来表�C��?/span>

aimy 2006-07-06 10:37 发表评论

no persistent for class

aimy — Tue, 04 Jul 2006 02:30:00 GMT

org.hibernate.hql.QuerySplitter - no persistent classes found for query class:
意味着你没有将someclass的配�|�文件放在hibernate.config或没有写配置文�g�?img src ="http://www.aygfsteel.com/aimyxmu/aggbug/56476.html" width = "1" height = "1" />

aimy 2006-07-04 10:30 发表评论

6.26 spring 创徏bean

aimy — Mon, 26 Jun 2006 15:26:00 GMT

1,通过构造函数创建bean

<bean id="baseDAO" class="com.aimy.core.dao.impl.BaseDAOImpl">
相当�?br />basedaoimpl baseDAO = new BaseDAOImpl();

2,通过静态工厂创建bean

<bean id="driver1" class="com.aimy.driver.driverManager"
factory-method="createInstance"/>
相当�?br />Object driver1 = driverManager.createInstance();

其中没有指定driverManager.createInstance();�q�回对象的类型，而且createInstance()必须是static�Ҏ��
3�Q�通过实例工厂�Ҏ��创徏bean

�Q�bean id="father" class="com.aimy.Father"/>
�Q�．�Q�．�Q�．�Q�．
<bean id="son" factory-bean="father" factory-method="createSon"/>
相当�?br />Father father = new Father();
Object son = father.createSon();

其中father和son必须在同一个bean工厂或父bean工厂�Q�即在同一个applicationcontext或子applicationcontext

二、如果applicationcontext默认预实例化那些singleton　bean�Q�这样就可以在beanfactory装蝲时就��查出错误�Q�而如果singleton　bean讄��为lazy�Q�mode�Q?img src ="http://www.aygfsteel.com/aimyxmu/aggbug/55239.html" width = "1" height = "1" />

aimy 2006-06-26 23:26 发表评论

6.26

aimy — Mon, 26 Jun 2006 01:56:00 GMT

hibernate 保存�I�值的�l�节
1。如果字�D�在pojo�c�M��是复杂对象类型，则在数据库用nulll表示�?br />2。如果字�D�在pojo�c�M��是简单数据类型，则在数据库用0表示�?img src ="http://www.aygfsteel.com/aimyxmu/aggbug/55073.html" width = "1" height = "1" />

aimy 2006-06-26 09:56 发表评论

aimy — Thu, 22 Jun 2006 05:19:00 GMT

1. document.name.value----->document.all.name.value
2. eval(document.all.name)---->eval('document.all.name')
3.javascript:window.history.go(-1)
4、在action�Ҏ��中只要抛出exception�Q�就会蟩到jspexception��面中，怎么处理�?img src ="http://www.aygfsteel.com/aimyxmu/aggbug/54466.html" width = "1" height = "1" />

aimy 2006-06-22 13:19 发表评论

aimy — Wed, 17 May 2006 03:17:00 GMT

��Z��业务逻辑攑ֈ�service层，比如判断登陆用户的信息，而在service层无法用SysUser user = (SysUser) request.getSession().getAttribute(WebConstants.SESSION_USER);因此在BaseService设一个属性�ؓ
public void setOperator(Entity operator);
public Entity getOperator();

aimy 2006-05-17 11:17 发表评论

设计模式1 单例

aimy — Wed, 17 May 2006 02:05:00 GMT

   private static WFEngine instance;
    public static final WFEngine getInstance() {
        return instance;
    }

aimy 2006-05-17 10:05 发表评论

5-11 sqlmap映射文�g

aimy — Thu, 11 May 2006 02:06:00 GMT

注意sqlmapGraAppInfoDTO的name�Q�unit只能是基本数据类型，不能是复杂数据类型．
�Q��?lt;script>的位�|?br />

�?lt;form>

的差别，必须在form加蝲完对它赋��|��否则srchEdit又重新加载，为null

3、hibernate属性设�|�出现错误：
如果pojo�c�d��fSUnit属性名�Q�系�l�将无法识别。get和set��取不到倹{�?br />

aimy 2006-05-11 10:06 发表评论