idea打包maven项目及python3调用jar包

news/2024/7/7 20:06:25

1、目标

解决java组件依赖的问题：将依赖java实现的程序封装后，打成可执行的jar包，再通过python3执行调用即可。

2、核心步骤

1）选择合适的框架，如maven，并引入依赖包(pom.xml)
2）封装主程序后，通过ieda快捷打包(包含所依赖的包)
3）python3调用jar包

3、实现过程

3.1 maven项目打jar包

1）创建maven项目

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2）主程序代码-demo如下

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JarMain.java

package com.huawei.controller;
import com.huawei.server.TestJar;

import com.alibaba.fastjson.JSON;

import java.util.ArrayList;
import java.util.HashMap;

public class JarMain {
    public static void main(String[] args) throws Exception{

        HashMap<String, ArrayList<String>> apiInfo = new HashMap<String, ArrayList<String>>();

        ArrayList<String> bookList = TestJar.getBookList();

        apiInfo.put("bookList", bookList);
//        System.out.println(apiInfo);            // {bookList=[三国志, 西游记]}

        String jsonApiInfo = JSON.toJSONString(apiInfo);   // hashMap 转 json
        System.out.println(jsonApiInfo);        // {"bookList":["三国志","西游记"]}

    }
}

TestJar.java

package com.huawei.server;

import java.util.ArrayList;

public class TestJar {

    public static ArrayList<String> getBookList() throws Exception{
        ArrayList<String> bookList = new ArrayList<String>();

        bookList.add("三国志");
        bookList.add("西游记");

        return bookList;

    }

}

3）pom文件指定组件及依赖进行打包

pom文件中指定 main类名及依赖包

<?xml version="1.0" encoding="UTF-8"?>
<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>com.huawei</groupId>
    <artifactId>test-maven-jar</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>2.0.1</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-assembly-plugin</artifactId>
                <version>2.5.5</version>
                <configuration>
                    <archive>
                        <manifest>
                            <!-- 这里配置你的程序入口main -->
                            <mainClass>com.huawei.controller.JarMain</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
                <executions>
                    <execution>
                        <id>make-assembly</id>
                        <phase>package</phase>
                        <goals>
                            <goal>single</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

通过idea的maven快捷键生成 jar包

mvn clean compile assembly:single

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生成的jar包，在 target目录下
终端命令可直接运行

java -jar test-maven-jar-1.0-SNAPSHOT-jar-with-dependencies.jar

3.2 python3调用jar包

import ast
import subprocess


class ReadJar(object):

    def __init__(self, jar_path):
        self.jar_path = jar_path

    def query_jar(self):

        execute = "java -jar {}".format(self.jar_path)

        output = subprocess.Popen(execute, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT,
                                  encoding="utf-8")
        res = output.stdout.readlines()
        return ast.literal_eval(res)


if __name__ == '__main__':
    rj = ReadJar("test-maven-jar-1.0-SNAPSHOT-jar-with-dependencies.jar")
    rj.query_jar()