Java IDE基于阿里云maven建工程项目

怼烎@ 2023-07-17 04:38 82阅读 0赞

我们在java开发时有时需要导入很多包，比如hive，spark，kafka等，这些虽然可以通过离线包来下载import，但始终不方便，而通过maven来import就很方便，它可以自动帮你下载所需包。不过初始的maven来源于国外，下载速度和质量不能保证，我们可以使用阿里云maven并进行相关工程项目开发

### 配置阿里云maven ###

*  下载maven：[https://maven.apache.org/download.cgi][https_maven.apache.org_download.cgi] 下载所需压缩包，并解压到合适的目录，解压即可，无需安装
 *  配置环境变量，以windows为例：
    
    1.  创建MAVEN\_HOME环境变量，指向安装目录
    2.  把MAVEN\_HOME添加到path里![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70][]

![20200319150952538.png][]

*  测试是否安装成功：win+r cmd 打开命令行窗口并输入 mvn -version，如成功返回版本则成功
 *  配置阿里云maven：在安装目录里的conf文件夹下，修改setting.xml文件，把里面内容替换为下面的
    
        <?xml version="1.0" encoding="UTF-8"?>
        <settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
                  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">
            <mirrors>
                <mirror>
                    <id>alimaven</id>
                    <name>aliyun maven</name>
                    <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
                    <mirrorOf>central</mirrorOf>
                </mirror>
            </mirrors>
        </settings>

### IntelliJ IDEA配置maven项目 ###

1.创建项目：选择maven，jdk并进行命名

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70 1][] ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70 2][]

2.import相关：点击Enable Auto-Import

![20200319160520717.png][]

3.设置maven关联文件：file-settings-Build,Execution,Deployment-Build Tools-Maven设置红框里的上面改的xml文件；  
        file-settings-Build,Execution,Deployment-compiler-java compiler更改Target bytecode version为你的jdk版本;  
        file-Project Structure-Modules--更改scr，sources为7

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70 3][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70 4][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70 5][]

4.在pom.xml里可以插入下面你想导入的包，系统会自动下载

<dependencies>
            <dependency>
                <groupId>junit</groupId>
                <artifactId>junit</artifactId>
                <version>4.11</version>
                <scope>test</scope>
            </dependency>
            <dependency>
                <groupId>org.apache.kafka</groupId>
                <artifactId>kafka-clients</artifactId>
                <version>0.10.2.2</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-nop</artifactId>
                <version>1.7.2</version>
            </dependency>
        </dependencies>

5.开始写java代码：新建package，新建java class即可

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21vY2hvdTExMQ_size_16_color_FFFFFF_t_70 6][]

这样所有的import都显示正常无红线就可以了

至此一个项目新建完成！

[https_maven.apache.org_download.cgi]: https://maven.apache.org/download.cgi
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[20200319150952538.png]: /images/20230528/62a03266161e44a0bf11115598a318a7.png
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