constant-generator

Java常量类生成器

• 需求

1. properties配置文件，创建常量类
2. 常量类创建后，繁多设置属性值
3. 配置文件变更和常量类不同步，容易遗漏

• 特点

1. 支持自动生成常量类 ConfigGenerator
2. 支持无限树形结构生成，基础数据类型（默认String，自定义属性type）
3. 支持自动设置值 ConfigLoader

• 作用：只需维护properties文件，自动生成类和设置属性值

示例

config.properties 配置文件

name=linsage
devMode=true
devMode.type=boolean
#数据库
db.url=jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8&zeroDateTimeBehavior=convertToNull
db.user=root
db.password=123456
#druid
druid.initialSize=10
druid.minIdle=10
druid.maxActive=100
#监控页面
druid.visitPath=/zs
#慢sql
druid.logSlowSql=true
druid.slowSqlMillis=100
#qiuniu
qiniu.accessKey=123456
qiniu.secretKey=56788
qiniu.separator=_
qiniu.bucket=test1
qiniu.domain=http://1.bkt.clouddn.com
qiniu.ins.bucket=test2
qiniu.ins.domain=http://2.bkt.clouddn.com
#proxy
httpProxy.ip=127.0.0.1
httpProxy.port=8118
httpProxy.port.type=int

ConfigGenerator 配置文件生成常量类

public static void main(String[] args) {
    /**
     * 生成常量类
     */
    // base model 文件保存路径
    String outputDir = PathKit.getWebRootPath() + "/../src/main/java/xyz/linsage/model";
    //包名
    String packageName = "xyz.linsage.model";
    //类名
    String className = "Constant";
    ConfigGenerator g = new ConfigGenerator(packageName, className, outputDir);
    //带顺序，为了和配置文件一致
    LinkedProp prop = LinkedPropKit.use("config.properties");
    g.generate(prop.getProperties());
}

生成类

package xyz.linsage.model;

/**
 * Generated by linsage, do not modify this file.
 */
@SuppressWarnings("serial")
public  class Constant {
	 public static String name;
	 public static boolean devMode;

	 public static class db {
		 public static String url;
		 public static String user;
		 public static String password;
	}

	 public static class druid {
		 public static String initialSize;
		 public static String minIdle;
		 public static String maxActive;
		 public static String visitPath;
		 public static String logSlowSql;
		 public static String slowSqlMillis;
	}

	 public static class qiniu {
		 public static String accessKey;
		 public static String secretKey;
		 public static String separator;
		 public static String bucket;
		 public static String domain;

		 public static class ins {
			 public static String bucket;
			 public static String domain;
		}
	}

	 public static class httpProxy {
		 public static String ip;
		 public static int port;
	}
}

ConfigLoader 自动加载配置文件属性值

public static void main(String[] args) {
    LinkedProp prop = LinkedPropKit.use("config.properties");
    ConfigLoader configLoader = new ConfigLoader();
    configLoader.load(Constant.class, prop.getProperties());

    System.out.println(Constant.name);
    System.out.println(Constant.devMode);
    System.out.println(Constant.db.url);
    System.out.println(Constant.qiniu.ins.domain);
    System.out.println(Constant.httpProxy.port);
    System.out.println("ok");
}