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Sun, 16 May 2010 08:16:00 GMT

自动地可视化表示数据库也可以让您受益匪浅。实体关�p�d��Q�ERD�Q�是实现数据库可视化的最��行的图�C�类型。大多数创徏 ERD 的工��P��例如�Q�ERWinfor�Q�都需要手动生�?ERD。虽然我��要�C��的工�?SchemaSpy 无法与现存的一些更复杂的工具媲��，但是它能够提供数据库的高�U?ERD 视图 �?以及�U�束、关�pȝ��。而且�Q�通过自动构徏来运行它�Q�您��可以轻村֜�从您的版本控制库中检查数据定义语�a��Q�Data Definition Language�Q�DDL�Q�的最新显�C��?

Ant 脚本使用 SchemaSpy 工具来创�?Javadoc 格式的文�Ӟ��

�l�合使用 SchemaSpy、Ant �?Javadoc

使用 java Ant ��d��调用 SchemaSpy�Q�传递了很多属性：

-t 为数据库�c�d��Q�有效��gؓ mysql�?code>ora�?code>db2�Q�等�{��?
-host 为托��数据库的计��机名�?
-port 为数据库 URL 的端口数�?
-u 为数据库用户名�?
-p 为数据库密码�?
-cp 为类路径�Q�用于指�C�数据库驱动�E�序 JAR 文�g的位�|�）�?
-o ��出目录的位置�?/li>

�q�些 SchemaSpy 的命令行属性用于生成显�C?ERD �?HTML 文�g

通过�l�合使用多种工具、作为构建的一部分针对数据库执�?ERD 生成脚本�Q��ƈ调度 ERD 生成�Q�您��可以在开发过�E�中��L��、快速地做出很多数据库决�{��?

另外�Q�对于喜�Ƣmaven的同学，SchemaSpy 也提供了plugin

http://maven.wakaleo.com/mojo/maven-schemaspy-plugin/faq.html

不需要解�?/a> 2010-05-16 16:16 发表评论

我的�E�序�?�q�_��一�Q?---参加工作

Mon, 03 May 2010 16:06:00 GMT

参加工作也已�l?�q�多了，一直想回头回想一下自己，然后动笔写下来，一来是自己目前�q�可以记忆�v一些事情，�{�自己将来老了�Q�可以看看这些东西回忆回忆。二来也是想做一个�ȝ��。本来这个题目也可以叫做我的bmi5�q�_��不过大家知道bmi的实在是��，而且现在�q�个公司已经名义上不存在了�?/p>

我是�?001�q�去沈阳��M��的，一直也是很喜欢沈阳的气候和东北人的豪爽�Q�东北爷们是真正可以拿心和你交朋友的�Q�不�q�我实在不喜�Ƣ东北的饮食�Q�觉得不�l�腻�Q�另外南方还有我的女人在�{�我回去�Q�要女�h来东北，隑ֺ�不是一般的大，所以在扑ַ�作的时候，我就下定军_��一定要扑֍�方的公司�Q�最好广州，深圳的，或者老家南昌的也是可以的。但是南方公司去东北招生的实在是��，除了华�ؓ�Q�中兴之外真的是��的可怜，��管我们学校在沈阳也是数一��C��的学校�?/p>

�?4�q�在10月䆾�Q�我面试的第一家公司是东��Y�Q�没有办法，谁让我们学校是东软的最大股东尼�Q�不知道现在是不是）�Q�面试的�q�程也还不错�Q�考试题也做的很顺�Q�东软还提出我们下学期直接找一些外教来教我们日文，不过当时东��Y�l�出的薪水实在是低的可怜，只有1800元，而且�q�要自己负责住宿�Q�自己当时也老大不小了，�q�有女�h在读书，是不是也是需要买些礼物的�Q�而且沈阳和大�q�都不是我想�ȝ��地方�Q�结果就直接没有��L��道�?/p>

接下来的日子也就整天在校内的招聘�|�站�Q�白山黑��_��上看帖子�Q�看��C��上�vbmi的招聘广告，一看是上�v的公司，而且做的是辽宁网通的��目�Q�感觉项目很大，可以学到不少东西�Q�关键是上�v的公司，��目做完了就可以��M��发展呢�Q�而且当时��x��友也�q�在�ȝ��I�生�Q�仔�l�的��x��觉得�q�个公司�q�是比较适合自己�Q�于是也开始做准备�Q�接下来的事情都很顺利，�W�试�Q�面试，当时有资格参加面试的�Q�整个我们学校也��?个�h�Q�一个本�U�生�Q�一个研�I�生�Q�不�q�最后那个研�I�生也没有过厅R�?/p>

在辽宁项目的前期�q�段旉��Q�估计也会我成长最快，也是最艰苦的时��_��我后�l�的会详�l�介�l�到。我�W�一天上班就是去做release�Q�也��是做发布和部��v�Q�在当时的项目中�Q�我们�ƈ没有像一些公司还有项目配�|�员�q�个角色�Q�就是直接拉一个开发�h员来负责做release�Q�这个角色当时是在项目中最辛苦的一个，�l�常是下�?点开始，然后�~�译3-4个小�Ӟ��?0�Ҏ��可以�~�译完成�Q�比较顺利的情况下）�Q�如果遇到编译不�q�去的时候，�q�需要联�p�d��发�h员进行修改，�~�译之后在对照check list�q�行增量部��v�?/p>

在第一天上班，我就从上�?0点过去，�W?天凌�?点半才下班，�?�Ҏ��到学校宿舍睡觉，后箋�?个月都是如此�Q�现在回惌��v来，感觉当时真的是很辛苦�Q�不�q�那�D�|��间也开始熟习了不少东西�Q�知道了��Z��模块开发，对ant�Q�weblogic�Q�oracle�Q�plsql�Q�linux�Q�aix�{�的使用也开始非常熟习了。在�q�段旉��里也开始熟习了公司的项目情况，开发�h员，��试人员�?/p>

不需要解�?/a> 2010-05-04 00:06 发表评论

Mon, 19 Apr 2010 15:59:00 GMT

最�q�在看一些项目的代码�Q��L��发现很少��目提供出uml图，或者就是提供uml囄��也有可能�q�没有和代码对应上，如果有正��的uml图，可以非常方便的�ؓ大家更好的理解代码层�ơ逻辑。其实我们可以��用��用UMLGraph来生成uml图，直接使用java代码来生成UMLGraph。对于大部分��目来说�Q�我们一般��用maven和ant�Q�还在��用ant�Q�你out了）来作为项目的�~�译工具�?/p>

在maven中，我们可以在pom.xml增加�Q?/p>

        org.apache.maven.plugins
        maven-javadoc-plugin
        2.6.1

          org.umlgraph.doclet.UmlGraphDoc


            org.umlgraph
            doclet
            5.1

          -views
          true




使用javadoc:aggregate ��可以生成出整个��目按照package的uml图了�?/p>

如果是��用ant�Q�在build.xml中增加target

注意�Q�要正常使用 UMLGraph�Q�您必须先安�?Graphviz 工具�Q�请自己google相关信息�?/p>

不需要解�?/a> 2010-04-19 23:59 发表评论

百支培训心得

Fri, 16 Apr 2010 13:48:00 GMT

��管工作�?�q�多了，现在能想��h��的培训真的是��之又少�Q�但是我想以后，我一定不会这栯��了，因�ؓ我参加了百支了！

百支对于我来说是一�ơ清�z�，�z�掉以前的恶习，�z�掉以前的老思维�Q�重新培��L��丢掉已久的�h��D��Q�重新找回往日的�Ȁ情。来阉K��之后�Q�也一直在想一个问题，阉K��和我以前公司有什么不同？或者说有什么特别的之处�Q�其实这个问题有很简单，��是阉K��是一家有梦想的公司，一家有价��D��的公司，一家有亲情�Q�友情的公司�Q�一家工作生�z�M��体的公司�Q�从中国来看�Q�阿里是唯一一家大的公司，而且价��g��p�诏�ȝ��q�么好的公司�Q�only one in china�?/p>

百支培训了很多业务知识，传统�U�，虚拟�U�，兄弟�U�，安全�U�，资金�U�，…学��C��很多东西�?/p>

百支的培训，让我开始结识了新的同学�Q�新的家人，新的伙伴�Q�让我们happly every day�Q?认真工作�Q�快乐生�z�！

不需要解�?/a> 2010-04-16 21:48 发表评论

Tue, 10 Nov 2009 08:19:00 GMT

随着�|�络技术的发展�Q�很多恶意程序往往按照常规�Ҏ��无法��d��删除。有没有什么方法能够在不安装�Q何第三方工具的情况下�Q�删除它们呢�Q�笔者经�q�多�q�实践，告诉大家一个秘密武�?-关闭Explorer�q�程法�?

在服务器�pȝ��出现问题�Ӟ��例如某个文�g无法删除�Q�某个程序假��L��者是�pȝ��没有响应都可以按CTRL+SHIFT+ESC�Q�调出Windows��d��理器。接下来扑ֈ�“进�E�”标�{�，��“explorer.exe”进�E�关闭。接下来整个桌面��׃��消失�Q�只剩下桌布了。然后通过Windows��d��理器的“文件”菜单下的“新��Z�Q务（�q�行�Q�”打开“创建新��d��”窗口，通过“浏览”按钮找到要删除文�g所在目录，在浏览窗口里直接删除卛_��?9%都可以将�q�个��固的文件删除，删除后��l�选择“文件”菜单下的“新��Z�Q务（�q�行�Q�”打开“创建新��d��”窗口，在打开处输入命�?-explorer后回车，我们��返回到正常的桌面界面下。显�Ӟ��对付��固文�g�Q�这个方法尤为简单�?

不需要解�?/a> 2009-11-10 16:19 发表评论

软�g开发管理的十条忠告

Sat, 07 Nov 2009 19:10:00 GMT

1、专注于构徏一个强有力�?a >团队�Q�这一团队能够解决困难的问题，�q��ؓ客户创造真正的价倹{�?
　　2、领��D��鼓舞；��理者授权。要同时成�ؓ优秀的领��D��和��理者，你需要就愿景�q�行沟�?/a>�q�理解其�l�节�?
　　3、对可能出现的障��有所准备�Q�防微杜渐，在这些障��尚未壮大时��清除它们�?
　　4、花旉��来仔�l�們֐�别�h的意见，但不要过于担心其他�h的想法�?
　　5、专注于事实�?
　　6、充当一个衰减器�Q�而不是放大器�Q��ؓ团队提供�E�_��性�?
　　7、永�q�不要将不能解释的事情归咎�ؓ蓄意破坏�?
　　8、培��d��默意识来作�ؓ严肃认真的一�U��^衡：对工作一丝不苟，对自��p��松自如�?
　　9、除了工作，�q�应该懂得��n受生�z�，而且每年要读25本书�?
　　10、相信你的直觉：如果你感觉不妙，那么很可能预感就会成真�?/p>

不需要解�?/a> 2009-11-08 03:10 发表评论

Ideas of software product

Mon, 02 Nov 2009 03:26:00 GMT

Productize software

When talking about the productized software, people often think of Microsoft Office and Microsoft XP. Of course the Microsoft product series is very successful. They can provide excellent GUI, and good user experience.

In China, there is a different picture for software products. Let me take Chinese software development companies for example. Most of the companies in China work on some projects, instead of specific products, When a company starts a new project, they need to invest lots of developers and money into the project. Sometimes, they also need to send a number of technicians to the customer site to do the development. In my opinion, there are two reasons.

(1) The software is not very satisfactory enough to be a perfect product.

(2) Chinese customers have lots of special requirements.

Customer is GOD. We can not change the ideas of customer most of time. So, we need to improve our product. Then how to evaluate a software product's success? Because of various concerns, different users hold different opinions and will arrive at different conclusions.

As for redevelopment and customization, the following should be more concerned:

(1) Software scaffolding

If the product provides scaffolding, the redevelopment people will quickly generate code (from database, UML, etc�?). As we know, the Spring, Hibernate also provide some scaffolding.

(2) Easy installation package

Most of time, the installation gives the first impression to the customer. So it is very important.

A simple installation must ensure everyone, even someone not very familiar with the application, can install the software.

The installation log file also plays significant role. Sometimes, it’s possible for the customer’s environment to have some problem so that the installation runs unsuccessfully. In this situation, the customer can send the log file to the technicians for analysis.

People who do not know about your product also can install easily according to wizard.

(3) Lots of Examples

The examples are the best teacher. Why most of java developer favor apache ant? The reason is that apache ant can provide lots of examples; you can find any task example in apache ant web site.

Example not only provides assistance to the development but also the product redevelopment If your product provides lost of examples, the questions from customers will be reduced substantially.

(4) Online documentation

If the developer can find some on-line document, he will not worry about that the document in his hands is an old version. And of course, the product developer also can work more effectively. For example, if the document has some error, or need to be modified, he can fix it quickly.

(5) Very good support

If the customer has some problem when he use or customize, he can get easily the support.

As for end-users, the following is very important.

(1) Friendly GUI, operator easily

(2) Collection client information online active, when some error happen.

(3) Auto-update to new version.

For customer, he does not need install some patch.

(4) In a conspicuous place clearly marked version of the software, and contact method

As for a kernel developer, he might think we need to provide:

(1) OSGI framework or plug-in framework to facilitate the expansion

(2) Standard software delivery process

(3) Software quality control

(4) A very good suite of documents.

不需要解�?/a> 2009-11-02 11:26 发表评论

maven Repository Configuration

Mon, 02 Nov 2009 03:25:00 GMT

Repositories are remote collections of projects from which Maven uses to populate the local repository of the build system. It is from this local repository that Maven calls it plugins and dependencies. Different remote repositories may contain different projects, and under the active profile they may be searched for a matching release or snapshot artifact.

Example A.8. Repository Configuration in settings.xml

<settings xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
                      http://maven.apache.org/xsd/settings-1.0.0.xsd">
  ...
  <profiles>
    <profile>
      ...
      <repositories>
        <repository>
          <id>codehausSnapshots</id>
          <name>Codehaus Snapshots</name>
          <releases>
            <enabled>false</enabled>
            <updatePolicy>always</updatePolicy>
            <checksumPolicy>warn</checksumPolicy>
          </releases>
          <snapshots>
            <enabled>true</enabled>
            <updatePolicy>never</updatePolicy>
            <checksumPolicy>fail</checksumPolicy>
          </snapshots>
          <url>http://snapshots.maven.codehaus.org/maven2</url>
          <layout>default</layout>
        </repository>
      </repositories>
      <pluginRepositories>
        ...
      </pluginRepositories>
      ...
    </profile>
  </profiles>
  ...
</settings>

releases, snapshots

These are the policies for each type of artifact, Release or snapshot. With these two sets, a POM has the power to alter the policies for each type independent of the other within a single repository. For example, one may decide to enable only snapshot downloads, possibly for development purposes.

enabled

true or false for whether this repository is enabled for the respective type (releases or snapshots).

updatePolicy

This element specifies how often updates should attempt to occur. Maven will compare the local POMs timestamp to the remote. The choices are: always, daily (default), interval:X (where X is an integer in minutes) or never.

checksumPolicy

When Maven deploys files to the repository, it also deploys corresponding checksum files. Your options are to ignore, fail, or warn on missing or incorrect checksums.

layout

In the above description of repositories, it was mentioned that they all follow a common layout. This is mostly correct. Maven 2 has a default layout for its repositories; however, Maven 1.x had a different layout. Use this element to specify which if it is default or legacy. If you are upgrading from Maven 1 to Maven 2, and you want to use the same repository which was used in your Maven 1 build, list the layout as legacy

不需要解�?/a> 2009-11-02 11:25 发表评论

Java obfuscate

Sun, 18 Oct 2009 16:50:00 GMT

there are lots tools about the java obfuscate. I know two.

(1)proguard

(2)yguard

the proguard support ant, maven. I use maven as the project and build tools. so I want use the maven proguard plugin, but It is not easy to use. so I use yguard.

in your pom.xml, you can add:

            net.sf.mgp
            maven-unclasses-plugin
            0.0.2


maven-antrun-plugin


      yguard
      yguard
      2.3.0
      system
      lib/yguard.jar



      package


                      name="mvn.classpath">

                      classname="com.yworks.yguard.YGuardTask"/>


                          in="${project.build.directory}/${project.build.finalName}.${project.packaging}"
              out="${project.build.directory}/${project.build.finalName}.jar"/>

                          logfile="${project.build.directory}/yguard.log.xml"
              replaceClassNameStrings="true">

















        run

It is very cool!!!.

不需要解�?/a> 2009-10-19 00:50 发表评论

Sat, 17 Oct 2009 09:23:00 GMT

有个大师说过一句话�Q�有人的地方��有江湖�Q�有江湖的地方就有斗争。今天在java eys��q��C��一场Resourcebundle引�v的口角，集体�?

http://www.javaeye.com/topic/6417?page=1.

�q�个问题在jdk1.6已经不存�?/p>

clearCache

public static final void clearCache()

Removes all resource bundles from the cache that have been loaded using the caller's class loader.

Since:: 1.6
See Also:: ResourceBundle.Control.getTimeToLive(String,Locale)

clearCache

public static final void clearCache(ClassLoader loader)

Removes all resource bundles from the cache that have been loaded using the given class loader.

Parameters:: loader - the class loader
Throws:: NullPointerException - if loader is null
Since:: 1.6
See Also:: ResourceBundle.Control.getTimeToLive(String,Locale)

�?.5�Q?.4怎么办呢�Q?/p>

   Class klass = ResourceBundle.getBundle("your.Bundle").getClass().getSuperclass();
   Field field = klass.getDeclaredField("cacheList");
   field.setAccessible(true);
   sun.misc.SoftCache cache = (sun.misc.SoftCache)field.get(null);
   cache.clear();
   field.setAccessible(false);

�q�样��可以清楚cache.

不需要解�?/a> 2009-10-17 17:23 发表评论