blocks|key|2520908|text|我发现freemarker在生成任何类型的代码方面都做得很好。来自网站：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2520909|2520910|+FreeMarker是一个“模板引擎”；一个基于模板生成文本输出(从超文本标记语言到自动生成的源代码)的通用工具。它是一个Java包，是一个面向Java程序员的类库。它本身并不是一个面向终端用户的应用程序，而是程序员可以嵌入到他们的产品中的东西。|blockquote|2520911|2520912|2520913|struts2经常使用它。该网站还有一长串使用freemarker的其他产品。|2520914|entityMap|0|LINK|mutability|MUTABLE|url|http://freemarker.sourceforge.net/^0|3|A|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|-4|5|6|7|X|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|Y|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|Z|8|@]|9|@]|C|$]]|$1|I|3|-4|5|6|7|10|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|11|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|C|$]]]|M|$N|$5|O|P|Q|C|$R|S]]]]

I've found that <a href="http://freemarker.sourceforge.net/" rel="noreferrer">freemarker</a> does a pretty good job for generating any type of code. From the website:

<blockquote>
 FreeMarker is a "template engine"; a generic tool to generate text output (anything from HTML to autogenerated source code) based on templates. It's a Java package, a class library for Java programmers. It's not an application for end-users in itself, but something that programmers can embed into their products. 
</blockquote>

It is used by struts2 a lot. The website has a long list of other products that use freemarker.

blocks|key|4632190|text|我使用过Velocity和StringTemplate。Velocity更传统一些(想想JSP/ASP的概念)，而StringTemplate看起来更简洁一些。在this+Artima+interview中描述的某种意义上。两者都是纯模板引擎，如果您想从模型生成完整的代码，则需要围绕它们编写一些代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4632191|ANTLR在内部使用StringTemplate，这可能对您的工作很有用。|4632192|作为另一种方法，您可以使用Eclipse，使用EMF和JET。|4632193|entityMap|0|LINK|mutability|MUTABLE|url|http://velocity.apache.org/|1|http://www.stringtemplate.org/|2|http://www.artima.com/lejava/articles/stringtemplate.html|3|http://www.antlr.org/|4|http://www.eclipse.org/|5|http://www.eclipse.org/modeling/emf/|6|http://www.eclipse.org/articles/Article-JET/jet_tutorial1.html^0|4|8|0|D|E|1|29|L|2|0|0|5|3|0|D|7|4|N|3|5|R|3|6|0^^$0|@$1|2|3|4|5|6|7|11|8|@]|9|@$A|12|B|13|1|14]|$A|15|B|16|1|17]|$A|18|B|19|1|1A]]|C|$]]|$1|D|3|E|5|6|7|1B|8|@]|9|@$A|1C|B|1D|1|1E]]|C|$]]|$1|F|3|G|5|6|7|1F|8|@]|9|@$A|1G|B|1H|1|1I]|$A|1J|B|1K|1|1L]|$A|1M|B|1N|1|1O]]|C|$]]|$1|H|3|-4|5|6|7|1P|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]|T|$5|K|L|M|C|$N|U]]|V|$5|K|L|M|C|$N|W]]|X|$5|K|L|M|C|$N|Y]]|Z|$5|K|L|M|C|$N|10]]]]

I have worked with both <a href="http://velocity.apache.org/" rel="noreferrer">Velocity</a> and <a href="http://www.stringtemplate.org/" rel="noreferrer">StringTemplate</a>. Velocity is a bit more conventional (think JSP/ASP concepts), while StringTemplate seems a bit cleaner. in a sense described in <a href="http://www.artima.com/lejava/articles/stringtemplate.html" rel="noreferrer">this Artima interview</a>. Both are pure templating engines, and will require you to write some code around them, if you want to do full-blown code generation from a model.

StringTemplate is used internally by <a href="http://www.antlr.org/" rel="noreferrer">ANTLR</a>, which may be useful to your effort.

As an alternative approach, you could go with <a href="http://www.eclipse.org/" rel="noreferrer">Eclipse</a>, using <a href="http://www.eclipse.org/modeling/emf/" rel="noreferrer">EMF</a> and <a href="http://www.eclipse.org/articles/Article-JET/jet_tutorial1.html" rel="noreferrer">JET</a>.

blocks|key|4632528|text|您应该尝试Telosys+Tools，这是一个使用可定制Velocity模板从现有数据库进行代码生成的Eclipse插件|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4632529|请参阅：http://www.telosys.org/|offset|length|4632530|Eclipse市场：http://marketplace.eclipse.org/content/telosys-tools|4632531|教程在这里：https://sites.google.com/site/telosystutorial/|4632532|查看另一个关于CodeSmith的问题：Is+there+any+freeware+tool+available+which+is+like+Codesmith?|4632533|entityMap|0|LINK|mutability|MUTABLE|url|http://www.telosys.org/|1|http://marketplace.eclipse.org/content/telosys-tools|2|https://sites.google.com/site/telosystutorial/|3|https://stackoverflow.com/questions/24035599/is-there-any-freeware-tool-available-which-is-like-codesmith/24323355#24323355^0|0|4|N|0|0|A|1G|1|0|6|1A|2|0|K|1P|3|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|10|8|@]|9|@$D|11|E|12|1|13]]|A|$]]|$1|F|3|G|5|6|7|14|8|@]|9|@$D|15|E|16|1|17]]|A|$]]|$1|H|3|I|5|6|7|18|8|@]|9|@$D|19|E|1A|1|1B]]|A|$]]|$1|J|3|K|5|6|7|1C|8|@]|9|@$D|1D|E|1E|1|1F]]|A|$]]|$1|L|3|-4|5|6|7|1G|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]|T|$5|O|P|Q|A|$R|U]]|V|$5|O|P|Q|A|$R|W]]|X|$5|O|P|Q|A|$R|Y]]]]

You should try Telosys Tools, an Eclipse plugin for code generation working from an existing database with customizable Velocity templates

See: <a href="http://www.telosys.org/" rel="nofollow noreferrer">http://www.telosys.org/</a>

Eclipse Marketplace : <a href="http://marketplace.eclipse.org/content/telosys-tools" rel="nofollow noreferrer">http://marketplace.eclipse.org/content/telosys-tools</a>

The tutorials are here : <a href="https://sites.google.com/site/telosystutorial/" rel="nofollow noreferrer">https://sites.google.com/site/telosystutorial/</a> 

See this other question about CodeSmith : <a href="https://stackoverflow.com/questions/24035599/is-there-any-freeware-tool-available-which-is-like-codesmith/24323355#24323355">Is there any freeware tool available which is like Codesmith?</a>

blocks|key|4632542|text|我使用JavaForger从模板生成代码。它解析现有的类，以便您可以在模板中使用该class-data。它既可以创建新类，也可以在现有类中插入代码。您可以根据字符串转换规则(例如myProject/dao/ProductDao.java服务myProject/+=>+/ProductService.java)确定生成的代码插入的位置。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4632543|JavaForger是开源的，使用FreeMarker作为模板引擎，使用JavaParser作为解析器。|4632544|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/daanvdh/JavaForger|1|https://github.com/daanvdh/JavaForger/blob/master/TemplateVariables.md|2|https://freemarker.apache.org/docs/dgui_quickstart.html|3|https://javaparser.org/^0|3|A|0|15|A|1|0|H|A|2|10|A|3|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]|$A|X|B|Y|1|Z]]|C|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]|$A|14|B|15|1|16]]|C|$]]|$1|F|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]|R|$5|I|J|K|C|$L|S]]]]

I use <a href="https://github.com/daanvdh/JavaForger" rel="nofollow noreferrer">JavaForger</a> to generate code from templates. It parses existing classes so that you can use that <a href="https://github.com/daanvdh/JavaForger/blob/master/TemplateVariables.md" rel="nofollow noreferrer">class-data</a> inside your templates. It can both create new classes or insert code into existing classes. You can determine where generated code will be inserted based on a string conversion rule (e.g. myProject/dao/ProductDao.java => myProject/service/ProductService.java). 

JavaForger is open source and uses <a href="https://freemarker.apache.org/docs/dgui_quickstart.html" rel="nofollow noreferrer">FreeMarker</a> as template engine and <a href="https://javaparser.org/" rel="nofollow noreferrer">JavaParser</a> as parser.

blocks|key|2521061|text|这是一个古老的问题，但是(对于Java语言)唯一能做到CodeSmith生成器所做的事情就是Spring+Roo。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2521062|原因是Java没有像C#那样的分部类。Spring+Roo通过使用AspectJ+ITDs解决了这个问题。|2521063|entityMap|0|LINK|mutability|MUTABLE|url|http://www.springsource.org/spring-roo|1|http://spring-roo.blogspot.com/2011/10/quick-introduction-to-aspectj-itd.html^0|1A|A|0|0|X|C|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

This is an old question but the only thing that comes close (for Java) to do what CodeSmith Generator does is <a href="http://www.springsource.org/spring-roo" rel="nofollow">Spring Roo</a>.

The reason is that Java does not have Partial Classes like C# does. Spring Roo gets around this by using <a href="http://spring-roo.blogspot.com/2011/10/quick-introduction-to-aspectj-itd.html" rel="nofollow">AspectJ ITDs</a>.

blocks|key|4632465|text|我的答案是使用StringTemplate，但除了使用什么工具之外，还有更多的东西要做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4632466|生成java代码有问题吗？或者是使用java工具？程序员通常会对编写代码感到非常自在。因此，编写一些java类并编写使用StringTemplate生成代码的遍历并不是一件容易的事情。我个人认为这是一个很好的练习来创建示例模型，从模型生成java代码。根据您的用例，您最终可以手动编写JSON模型，而不必编写任何java代码来生成java代码。或者，您可以最终编写生成等价模型的Java类。|4632467|您可以使用基于StringTemplate的STST，它读取JSON。STST是基于命令行的，我相信你可以将它连接到eclipse和/或Visual+Studio。|offset|length|4632468|我个人认为，JSON是一种非常简单的语言。而且几乎每种语言都有支持它的库。|4632469|entityMap|0|LINK|mutability|MUTABLE|url|http://hardlikesoftware.com/weblog/2007/04/26/on-learning-stringtemplate/^0|0|0|M|4|0|0|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|S|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$F|U|G|V|1|W]]|A|$]]|$1|H|3|I|5|6|7|X|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|K|$L|$5|M|N|O|A|$P|Q]]]]

My answer is to use StringTemplate, but there is a bit more to it than just what tool to use.

Is it the issue to generate java code? Or is it to use java tools? Programmers would be normally very comfortable writing code. Therefore, it would not be a leap to write some java classes and write a walk that would generate code using StringTemplate. I personally think it is a good exercise to create example models, generate your java code from the models. And depending on your use case you could end up writing JSON models by hand and never having to write any java code to produce the java code. Or you could end up writing Java classes that produce equivalent models.

You could use the StringTemplate based <a href="http://hardlikesoftware.com/weblog/2007/04/26/on-learning-stringtemplate/" rel="nofollow" title="STST">STST</a>, which reads JSON. STST is command line based, and I am sure you could hook it to both eclipse and/or Visual Studio.

I personally think about portability, JSON is an extremely simple language. And almost every language has libraries that support it.

blocks|key|1877762|text|我不是一个喜欢C#的人，所以我不知道等价物是什么，但是我发现xdoclet在过去非常好。我不认为它与eclipse集成在一起，但你可以从ant脚本运行它。从带注释的Java类生成Hibernate映射文件。如果这就是您要查找的内容，则非常有用:)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1877763|entityMap|0|LINK|mutability|MUTABLE|url|http://xdoclet.sourceforge.net/xdoclet/index.html^0|U|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I'm not a C# man so I don't know what the equivalents would be, however I've found <a href="http://xdoclet.sourceforge.net/xdoclet/index.html" rel="nofollow noreferrer">xdoclet</a> to be very good in the past. I don't think it integrates with eclipse as such but you can run it from an ant script. Does things like generating Hibernate mapping files from annotated Java classes. Useful if that's what you're looking for :)

blocks|key|1882268|text|eclipse有一个内置的模板系统。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1882269|在window+->首选项->+java+->代码样式->代码模板中查找|1882270|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

eclipse has a built-in template system.

look in window -> preferences -> java -> code style -> code templates

blocks|key|6049189|text|你可以看看我的插件：http://fast-code.sourceforge.net/。它允许用户选择多个字段并使用用户指定的速度模板生成代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|6049190|entityMap|0|LINK|mutability|MUTABLE|url|http://fast-code.sourceforge.net/^0|A|X|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You might look at my plugin : <a href="http://fast-code.sourceforge.net/" rel="nofollow">http://fast-code.sourceforge.net/</a>. It allows one to select multiple fields and generate code using user specified velocity templates.

blocks|key|4632479|text|请看一下我的项目https://github.com/karajdaar/templator，看看是否有帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4632480|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/karajdaar/templator^0|8|12|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Take a look at my project <a href="https://github.com/karajdaar/templator" rel="nofollow">https://github.com/karajdaar/templator</a> and see if that helps.

blocks|key|6049302|text|我写了一个简单的基于web的应用程序供我使用。它可以在https://github.com/harish2704/templates上找到，在http://templates-harish2704.rhcloud.com/上可以找到一个演示，它是一个独立于语言的工具。GUI支持多种语言(高亮显示、代码段补全等)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|6049303|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/harish2704/templates|1|http://templates-harish2704.rhcloud.com/^0|R|13|0|1Z|14|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

I wrote a simple web based application for my use.
its available at <a href="https://github.com/harish2704/templates" rel="nofollow">https://github.com/harish2704/templates</a>
 and a demo is available at <a href="http://templates-harish2704.rhcloud.com/" rel="nofollow">http://templates-harish2704.rhcloud.com/</a>
Its language independent tool. GUI supports several languages ( highlighting, snippet completion ect )

For C#, I have often used <a href="http://www.codesmithtools.com/" rel="nofollow noreferrer">CodeSmith</a> and lately the <a href="http://www.hanselman.com/blog/" rel="nofollow noreferrer">T4 generator</a> which is part of Visual Studio.

I'm looking for something similar for Java, in particular an Eclipse add-in since I do all my Java development using the Eclipse IDE.

Code / template  generator for Java

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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对于C#，我经常使用，最近还使用了Visual Studio中的。我正在寻找类似于Java的东西，特别是Eclipse插件，因为我所有的Java开发都是使用Eclipse IDE进行的。

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