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68-Java-使用Maven创建聚合工程.md\n\n1. 新建一个Maven工程\n\n![](68-Images/1.png)\n\n\n勾选 Create a simple project (skip archetype selection)\n\n如图所示，location里会有默认为别的项目的空间，我进行的尝如下：\n\n去掉勾选 Use default Workspace location 清空Location：里的路径\n完成之后再次勾选 Use default Workspace location\n\n![](68-Images/2.png)\n\n结果就成这样咯。。。。不能点击Next。。。显示我是没有解决这个bug\n\n**最终解决方法：**\n\nwindows ---\u003e Preferences ---\u003e Global Settings (open file) 配置好即可解决这个bug\n\n![](68-Images/3.png)\n\n![](68-Images/4.png)\n\n![](68-Images/5.png)\n\n这样一个Maven工程就创建好咯。。。\n\n![](68-Images/6.png)\n\n2. 因tct-commons这个总的工程下面有很多子的工程，所以再创建一个Maven Module\n\nFile ---\u003e NEW ---\u003e Maven ---\u003e Maven Module ---\u003e Next\n\n![](68-Images/7.png)\n\n![](68-Images/8.png)\n\n![](68-Images/9.png)\n\n![](68-Images/10.png)\n\n+ 打开txt-commons里的pom.xml,可以看到这里面已经有子级txt-domain的配置咯\n\n![](68-Images/11.png)\n\n3. 同样的操作再创建一个Maven Module tct-dao\n\n![](68-Images/12.png)\n\n![](68-Images/13.png)\n\n这里父级工程里的pom.xml已经自动更新\n\n```\n\u003cproject 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/maven-4.0.0.xsd\"\u003e\n  \u003cmodelVersion\u003e4.0.0\u003c/modelVersion\u003e\n  \u003cgroupId\u003ecom.tencent\u003c/groupId\u003e\n  \u003cartifactId\u003etct-commons\u003c/artifactId\u003e\n  \u003cversion\u003e0.0.1-SNAPSHOT\u003c/version\u003e\n  \u003cpackaging\u003epom\u003c/packaging\u003e\n  \u003cmodules\u003e\n  \t\u003cmodule\u003etxt-domain\u003c/module\u003e\n  \t\u003cmodule\u003etxt-dao\u003c/module\u003e\n  \u003c/modules\u003e\n\u003c/project\u003e\n```\n3. 同样的操作再创建一个Maven Module tct-service\n\n**注：**\n\n刚刚起错名咯。。将前缀名为txt的工程更改为tct\n\n4. 创建一个Maven Module tct-controller 需要勾选war包因为是web工程\n\n![](68-Images/14.png)\n\ntct-commons里的pom.xml\n\n```\n\u003cproject 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/maven-4.0.0.xsd\"\u003e\n  \u003cmodelVersion\u003e4.0.0\u003c/modelVersion\u003e\n  \u003cgroupId\u003ecom.tencent\u003c/groupId\u003e\n  \u003cartifactId\u003etct-commons\u003c/artifactId\u003e\n  \u003cversion\u003e0.0.1-SNAPSHOT\u003c/version\u003e\n  \u003cpackaging\u003epom\u003c/packaging\u003e\n  \u003cmodules\u003e\n  \t\u003cmodule\u003etct-domain\u003c/module\u003e\n  \t\u003cmodule\u003etct-dao\u003c/module\u003e\n  \t\u003cmodule\u003etct-service\u003c/module\u003e\n  \t\u003cmodule\u003etct-controller\u003c/module\u003e\n  \u003c/modules\u003e\n\u003c/project\u003e\n```\n**注：以后创建工程越来越大的时候，我们不但把模块分开，而且模块里面层与层也分开，这样分开分得很细，会让实施工程师/运维工程师很为难，但对于开发来说就很开心，因为只需要配置好这个模块就行**\n\n\n依赖关系 dao 层依赖 domain service 依赖 dao controller 依赖 service 所以需要在对应工程的 pom.xml 里配置依赖\n\n**配置tct-dao里的pom.xml**\n\n```\n\u003cproject 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/maven-4.0.0.xsd\"\u003e\n  \u003cmodelVersion\u003e4.0.0\u003c/modelVersion\u003e\n  \u003cparent\u003e\n    \u003cgroupId\u003ecom.tencent\u003c/groupId\u003e\n    \u003cartifactId\u003etct-commons\u003c/artifactId\u003e\n    \u003cversion\u003e0.0.1-SNAPSHOT\u003c/version\u003e\n  \u003c/parent\u003e\n  \u003cartifactId\u003etxt-dao\u003c/artifactId\u003e\n  \u003cdependencies\u003e\n\t  \u003cdependency\u003e\n\t\t  \u003cgroupId\u003ecom.tencent\u003c/groupId\u003e\n\t\t  \u003cartifactId\u003etct-domain\u003c/artifactId\u003e\n    \t  \u003cversion\u003e0.0.1-SNAPSHOT\u003c/version\u003e\n\t  \u003c/dependency\u003e\n  \u003c/dependencies\u003e\n\u003c/project\u003e\n```\n\n**报错信息如下：**\n\n```\nMissing artifact com.tencent:tct-domain:jar:0.0.1-SNAPSHOT\n```\n\n![](68-Images/15.png)\n\n**原因：** 之前的命名错误，将前缀txt更改为tct之后pom.xml里的artifactId标签里依然是txt-dao \n\n**解决方法：** 将所有工程里的pom.xml里的artifactId标签里前缀为txt更改为 tct，更改完成之后，如图所示报错解决\n\n![](68-Images/16.png)\n\n5. 在domain工程里写一个实体类\n\n```\npackage com.tencent.easyJava.domain;\n/**\n * User实体类\n* \u003cp\u003eTitle: User\u003c/p\u003e  \n* \u003cp\u003eDescription: \u003c/p\u003e  \n* @author xianxian \n* @date 2019年6月27日\n */\npublic class User {\n\n\tprivate Integer id;\n\tprivate String name;\n\tpublic Integer getId() {\n\t\treturn id;\n\t}\n\tpublic void setId(Integer id) {\n\t\tthis.id = id;\n\t}\n\tpublic String getName() {\n\t\treturn name;\n\t}\n\tpublic void setName(String name) {\n\t\tthis.name = name;\n\t}\n}\n```\n\n6. 在dao工程里写一个dao类看看是否能够导入其它工程的实体类，如图所示成功导入，未报错。\n\n![](68-Images/17.png)\n\n```\npackage com.tencent.easyJava.dao;\n\nimport com.tencent.easyJava.domain.User;\n\npublic class UserDao {\n\n\tpublic void addUser(User user) {\n\t\tSystem.out.println(\"add User:\" + user);\n\t}\n}\n```\n\n**以就就是我关于 Java-使用Maven创建聚合工程  知识点的整理与总结的全部内容 [另附源码](https://github.com/javaobjects/tct-commons)**\n\n==================================================================\n#### 分割线\n==================================================================\n\n**博主为咯学编程：父母不同意学编程，现已断绝关系;恋人不同意学编程，现已分手;亲戚不同意学编程，现已断绝来往;老板不同意学编程,现已失业三十年。。。。。。如果此博文有帮到你欢迎打赏，金额不限。。。**\n\n![](https://upload-images.jianshu.io/upload_images/5227364-e76764b127f255ed.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240) ","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjavaobjects%2Ftct-commons","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fjavaobjects%2Ftct-commons","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fjavaobjects%2Ftct-commons/lists"}