Writing command line tools

1. Use common-cli to write command line tools

commons-cliIt is a package provided by the Apache open source organization for parsing command line parameters.

First refer to the common-cli dependency package:

<groupId>commons-cli</groupId>
<artifactId>commons-cli</artifactId>
<version>1.2</version>

Command definition:

private static final Options OPTIONS = new Options();

public void defineCommand() {
     OPTIONS.addOption("i", true, "the input directory where the proto files are");
     OPTIONS.addOption("o", true, "the output directory which is the output path");
     OPTIONS.addOption("c",true,"whether we use config.json or not");

     OPTIONS.addOption("groupId",true,"maven project related parameter");
     OPTIONS.addOption("artifactId",true,"maven project related parameter");
     OPTIONS.addOption("artifactVersion",true,"maven project related parameter");

     OPTIONS.addOption("h", true ,"get command input help");
     OPTIONS.addOption("help", true ,"get command input help");
}

Command parsing:

CommandLine cli = parser.parse(OPTIONS, args);
if (cli.hasOption("c")) {
     //TODO:  
}

Excuting an order:

java -jar common-cli-demo-1.0-SNAPSHOT.jar -c c:\cli\demo1\config.json

config.json:

{
  "groupId": "common.cli.demo",
  "artifactId": "cli-demo",
  "artifactVersion": "demo-snapshot",
  "outputDirectory": "c"
}

The config.json file name can be arbitrary, if not specified, the default configuration will be read.

2. Use the mustache template 

mustache reference address: Github address

Template file generator.mustache:

<?xml version="1.0" encoding="GBK"?>
<!DOCTYPE properties SYSTEM "http://java.sun.com/dtd/properties.dtd">
<properties>

    <entry key="base_package">{{base_package}}</entry>
    <!--配置实体包路径-->
    <entry key="base_entity_package">{{base_entity_package}}</entry>
    <!--配置mybatis Mapper包路径-->
    <entry key="base_mapper_package">{{base_mapper_package}}</entry>

</properties>

Template parameter configuration xmltemplate.json:

{
  "base_package": "com.demo.package",
  "base_entity_package": "com.demo.package.entity",
  "base_mapper_package": "com.demo.package.mapper"
}

Excuting an order:

java -jar common-cli-demo-1.1-SNAPSHOT.jar -c c:\cli\demo2\template.json -o c:\cli\demo2\