build(构建)--介绍

ゞ浴缸里的玫瑰 2022-12-04 05:24 136阅读 0赞

原文网址：[build(构建)--介绍\_IT利刃出鞘的博客-CSDN博客][build_--_IT_-CSDN]

# maven转gradle #

**纯粹转换依赖**

> [Maven to Gradle Dependencies Converter][]

**pom.xml生成gradle项目**

> 1.本机安装了gradle 2.0以上的版本
> 
> 2.生成gradle文件。  
> 在maven项目的根目录下运行：gradle init --type pom
> 
> 3.以build.gradle文件打开项目

# gradle转maven #

**1.build.gradle添加maven插件**

> apply plugin: 'maven'
> 
> 或者
> 
> plugins \{  
> id 'maven'  
> \}

**2.生成pom.xml**

执行gradle build再执行gradle install

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZlaXlpbmcwY2FuZ2xhbmc_size_16_color_FFFFFF_t_70][]

**3.查看文件**

此时，在项目的build/poms会生成pom-default.xml

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZlaXlpbmcwY2FuZ2xhbmc_size_16_color_FFFFFF_t_70 1][]

# Jar转为pom.xml #

其他网址

> [基于Maven中心库 通过Jar包生成Maven POM.xml的dependency\_java,maven\_贾小黑的博客-CSDN博客][Maven_ _Jar_Maven POM.xml_dependency_java_maven_-CSDN]  
> [将项目中的jar文件生成pom文件\_Java\_闵渭凯-CSDN博客][jar_pom_Java_-CSDN]

本程序会在控制台中输出依赖，例如：

<dependencies>
    	<dependency>
    		<groupId>commons-beanutils</groupId>
    		<artifactId>commons-beanutils</artifactId>
    		<version>1.8.3</version>
    	</dependency>
    	<dependency>
    		<groupId>commons-logging</groupId>
    		<artifactId>commons-logging</artifactId>
    		<version>1.1.3</version>
    	</dependency>
    	<dependency>
    		<groupId>XXX</groupId>
    		<artifactId>mysql-connector-java-bin</artifactId>
    		<version>5.0.8</version>
    	</dependency>
    	<dependency>
    		<groupId>org.apache.shiro</groupId>
    		<artifactId>shiro-all</artifactId>
    		<version>1.3.2</version>
    	</dependency>
    </dependencies>

**所需包**

<dependencies>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastJson</artifactId>
                <version>1.2.17</version>
            </dependency>
     
            <dependency>
                <groupId>dom4j</groupId>
                <artifactId>dom4j</artifactId>
                <version>1.6</version>
            </dependency>
            <dependency>
                <groupId>org.jsoup</groupId>
                <artifactId>jsoup</artifactId>
                <version>1.9.2</version>
            </dependency>
    </dependencies>

package com.test;
    
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.util.Iterator;
    import java.util.jar.JarInputStream;
    import java.util.jar.Manifest;
    
    import org.dom4j.Element;
    import org.dom4j.dom.DOMElement;
    import org.jsoup.Jsoup;
    import com.alibaba.fastjson.JSONObject;
    public class Jar2Pom {
        public static void main(String[] args) throws FileNotFoundException, IOException {
            Element dependencies = new DOMElement("dependencies");
    
            File dir = new File("E:\\my_project\\test\\src\\main\\lib");        //需生成pom.xml 文件的 lib路径
    
            System.out.println("<dependencies>");
    
            for (File jar : dir.listFiles()) {
                JarInputStream jis = new JarInputStream(new FileInputStream(jar));
                Manifest mainmanifest = jis.getManifest();
                jis.close();
                //其他网站方法都少这个判断，会抛出空指针异常
                if(mainmanifest==null) {
                    continue;
                }
                String bundleName = mainmanifest.getMainAttributes().getValue("Bundle-Name");
                String bundleVersion = mainmanifest.getMainAttributes().getValue("Bundle-Version");
                Element ele = null;
    
                StringBuffer sb = new StringBuffer(jar.getName());
                if (bundleName != null) {
                    bundleName = bundleName.toLowerCase().replace(" ", "-");
                    sb.append(bundleName+"\t").append(bundleVersion);
                    ele = getDependices(bundleName, bundleVersion);
                    //System.out.println(sb.toString());
                    //System.out.println(ele.asXML());
                }
                if (ele == null || ele.elements().size() == 0) {
                    bundleName = "";
                    bundleVersion = "";
                    String[] ns = jar.getName().replace(".jar", "").split("-");
                    for (String s : ns) {
                        if (Character.isDigit(s.charAt(0))) {
                            bundleVersion += s + "-";
                        } else {
                            bundleName += s + "-";
                        }
                    }
                    if (bundleVersion.endsWith("-")) {
                        bundleVersion = bundleVersion.substring(0, bundleVersion.length() - 1);
                    }
                    if (bundleName.endsWith("-")) {
                        bundleName = bundleName.substring(0, bundleName.length() - 1);
                    }
                    ele = getDependices(bundleName, bundleVersion);
                    sb.setLength(0);
                    sb.append(bundleName+"\t").append(bundleVersion);
                    //System.out.println(ele.asXML());
                }
    
                ele = getDependices(bundleName, bundleVersion);
                if (ele.elements().size() == 0) {
                    ele.add(new DOMElement("groupId").addText("XXX"));
                    ele.add(new DOMElement("artifactId").addText(bundleName));
                    ele.add(new DOMElement("version").addText(bundleVersion));
                }
                System.out.println("\t" + "<dependency>");
                Iterator<DOMElement> iterator = ele.nodeIterator();
                while(iterator.hasNext()){
                    System.out.println("\t\t" + iterator.next().asXML());
                }
                System.out.println("\t" + "</dependency>");
    
                //System.out.println("\t"+ele.asXML());
                //dependencies.add(ele);
            }
            //System.out.println(dependencies.asXML());
            System.out.println("</dependencies>");
        }
        public static Element getDependices(String key, String ver) {
            Element dependency = new DOMElement("dependency");
            // 设置代理
            // System.setProperty("http.proxyHost", "127.0.0.1");
            // System.setProperty("http.proxyPort", "8090");
            try {
                String url = "http://search.maven.org/solrsearch/select?q=a%3A%22" +
                        key + "%22%20AND%20v%3A%22" + ver + "%22&rows=3&wt=json";
    
                org.jsoup.nodes.Document doc = Jsoup.connect(url).ignoreContentType(true).timeout(30000).get();
                String elem = doc.body().text();
                JSONObject response = JSONObject.parseObject(elem).getJSONObject("response");
                if (response.containsKey("docs") && response.getJSONArray("docs").size() > 0) {
                    JSONObject docJson = response.getJSONArray("docs").getJSONObject(0);
                    Element groupId = new DOMElement("groupId");
                    Element artifactId = new DOMElement("artifactId");
                    Element version = new DOMElement("version");
                    groupId.addText(docJson.getString("g"));
                    artifactId.addText(docJson.getString("a"));
                    version.addText(docJson.getString("v"));
                    dependency.add(groupId);
                    dependency.add(artifactId);
                    dependency.add(version);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return dependency;
        }
    }

# pom.xml生成Jar #

其他网址：[jar文件和pom.xml文件依赖之间的转换\_Java\_断橋殘雪的博客-CSDN博客][jar_pom.xml_Java_-CSDN]

**1：创建pom2jar.bat**

> 内容如下
> 
>     call mvn -f pom.xml dependency:copy-dependencies
>     
>     @pause

**2.创建pom.xml**

在此pom.xml中添加相应依赖即可

<?xml version="1.0"?>
    <project 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">
    	<modelVersion>4.0.0</modelVersion>
    	<groupId>temp.download</groupId>
    	<artifactId>temp-download</artifactId>
    	<version>1.0-SNAPSHOT</version> 
    
    	<dependencies>
    		
    		
    		<dependency>
    			<groupId>mysql</groupId>
    			<artifactId>mysql-connector-java</artifactId>
    			<version>5.1.45</version>
    		</dependency>
    
    	</dependencies>
    </project>

**3.将pom2jar.bat与pom.xml放到同一个文件夹**

**4.双击pom2jar.bat**

> jar包文件会下载在target/dependency/

[build_--_IT_-CSDN]: https://knife.blog.csdn.net/article/details/108424712
[Maven to Gradle Dependencies Converter]: http://sagioto.github.io/maven2gradle/
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZlaXlpbmcwY2FuZ2xhbmc_size_16_color_FFFFFF_t_70]: /images/20221123/e952c2d4d5194283bd3699f285819dc5.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2ZlaXlpbmcwY2FuZ2xhbmc_size_16_color_FFFFFF_t_70 1]: /images/20221123/b8c693ff3f684ef0ae6afe0d59a0df29.png
[Maven_ _Jar_Maven POM.xml_dependency_java_maven_-CSDN]: https://blog.csdn.net/JustinJia91/article/details/106162722
[jar_pom_Java_-CSDN]: https://blog.csdn.net/weixin_41187876/article/details/91883035
[jar_pom.xml_Java_-CSDN]: https://blog.csdn.net/qq_35620501/article/details/87909859