获取properties配置

1. 使用@Value

@Value("${swagger.enable}")

使用Spring的PropertyPlaceholderConfigurer关联 @Value

方法一：使用xml配置PropertyPlaceholderConfigurer，使用@ContextConfiguration导入配置文件

package com.properties.value;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.beans.factory.annotation.Value;

import org.springframework.test.context.ContextConfiguration;

import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import lombok.extern.slf4j.Slf4j;

//方法一：使用xml配置PropertyPlaceholderConfigurer，使用@ContextConfiguration导入配置文件

@RunWith(SpringJUnit4ClassRunner.class)

@ContextConfiguration("classpath:applicationCtx.xml")

@Slf4j

public class ValueUsage1 {

    @Value("${username}")

    private String uname;

    @Value("${password}")

    private String pwd;

    @Test

    public void test(){

        log.info("username:"+uname);

        log.info("password:"+pwd);

    }

}

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">

        <!-- 对于读取一个配置文件采取的方案 -->

        <property name="location" value="classpath:cfg.properties"></property>

        <!-- 对于读取两个以上配置文件采取的处理方案 -->

        <!--

        <property name="locations">

            <list>

                <value>classpath:cfg.properties</value>

                <value>classpath:cfg2.properties</value>

            </list>

        </property>

        -->

    </bean>

</beans>

username=jay

password=123

env=${pom.env}

ver=${pom.ver}

方法二：使用@Bean实例化PropertySourcesPlaceholderConfigurer，@PropertySources导入资源

package com.properties.value;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

//方法二：使用@Bean实例化PropertySourcesPlaceholderConfigurer，@PropertySources导入资源

public class ValueUsage2 {

	public static void main(String[] args) {

		AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(PropertiesWithJavaConfig.class);

        FileService service = (FileService) annotationConfigApplicationContext.getBean("fileService");

        service.readValues();

        annotationConfigApplicationContext.close();

	}

}

package com.properties.value;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

import org.springframework.context.annotation.PropertySources;

import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;

@Configuration

@PropertySources({ @PropertySource(value = "classpath:cfg.properties", ignoreResourceNotFound = true),

	@PropertySource(value = "classpath:application.properties", ignoreResourceNotFound = true) })

//==> @PropertySource("file:${app.home}/app.properties")	file指向绝对路径

@ComponentScan(basePackages = "com.properties.value")

public class PropertiesWithJavaConfig {

   //要想使用@Value 用${}占位符注入属性，这个bean是必须的，这个就是占位bean,另一种方式是不用value直接用Envirment变量直接getProperty('key')

   @Bean

   public static PropertySourcesPlaceholderConfigurer propertySourcesPlaceholderConfigurer() {

      return new PropertySourcesPlaceholderConfigurer();

   }

}

#springfox.documentation.swagger.v2.path=/api-docs

#server.contextPath=/v2

server.port=8080

swagger.enable=true

jdbc.driverClassName = com.mysql.jdbc.Driver

jdbc.url = jdbc:mysql://localhost:3306/websystique

jdbc.username = myuser

jdbc.password = mypassword

hibernate.dialect = org.hibernate.dialect.MySQLDialect

hibernate.show_sql = false

hibernate.format_sql = false

sourceLocation =/dev/input

destination =c\:/temp/output

username=jay

password=123

env=${pom.env}

ver=${pom.ver}

2. 使用Environment

@Autowired

private Environment environment;

environment.getProperty("swagger.enable")

方法一：@Inject或者@Autowired一个Environment对象

package com.properties.environment;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

//方法一：@Inject或者@Autowired一个Environment对象

public class EnvironmentUsage1 {

	public static void main(String[] args) {

		AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext(PropertiesWithJavaConfig.class);

        FileService service = (FileService) annotationConfigApplicationContext.getBean("fileService");

        service.readValues();

        annotationConfigApplicationContext.close();

	}

}

package com.properties.environment;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

@Configuration

@PropertySource(value = { "classpath:cfg.properties", "classpath:application.properties" })

@ComponentScan(basePackages = "com.properties.environment")

public class PropertiesWithJavaConfig {

}

package com.properties.environment;

public interface FileService {

	public void readValues();

}

package com.properties.environment;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.core.env.Environment;

import org.springframework.stereotype.Service;

@Service("fileService")

public class FileServiceImpl implements FileService {

	@Autowired

	private Environment environment;

	public void readValues() {

		System.out.println("Getting property via Spring Environment :" + environment.getProperty("jdbc.driverClassName"));

		System.out.println("Source Location : " + environment.getProperty("sourceLocation"));

		System.out.println("Destination Location : " + environment.getProperty("destination"));

	}

}

#springfox.documentation.swagger.v2.path=/api-docs

#server.contextPath=/v2

server.port=8080

swagger.enable=true

jdbc.driverClassName = com.mysql.jdbc.Driver

jdbc.url = jdbc:mysql://localhost:3306/websystique

jdbc.username = myuser

jdbc.password = mypassword

hibernate.dialect = org.hibernate.dialect.MySQLDialect

hibernate.show_sql = false

hibernate.format_sql = false

sourceLocation =/dev/input

destination =c\:/temp/output

username=jay

password=123

env=${pom.env}

ver=${pom.ver}

方法二：实现EnvironmentAware接口

package com.properties.environment;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import org.springframework.context.annotation.ComponentScan;

import org.springframework.core.env.Environment;

//方法二：实现EnvironmentAware接口

@ComponentScan(basePackages = "com.properties.environment")

@SpringBootApplication

public class EnvironmentUsage2 {

	public static void main(String[] args) {

		AnnotationConfigApplicationContext annotationConfigApplicationContext = new AnnotationConfigApplicationContext();

		annotationConfigApplicationContext.register(EnvironmentBean.class);

		annotationConfigApplicationContext.refresh();

		Environment environment = annotationConfigApplicationContext.getBean("environment2",Environment.class);

		System.out.println("Getting property via Spring Environment :" + environment.getProperty("jdbc.driverClassName"));

		System.out.println("Source Location : " + environment.getProperty("sourceLocation"));

		System.out.println("Destination Location : " + environment.getProperty("destination"));

		annotationConfigApplicationContext.close();

	}

}

package com.properties.environment;

import org.springframework.context.EnvironmentAware;

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

import org.springframework.core.env.Environment;

@Configuration

@PropertySource(value = { "classpath:cfg.properties", "classpath:application.properties" })

public class EnvironmentBean implements EnvironmentAware {

	private Environment environment2;

	@Override

	public void setEnvironment(Environment environment) {

		this.environment2=environment;

	}

	@Bean(name="environment2")

	public Environment readEnvironment() {

		return environment2;

	}

}

#springfox.documentation.swagger.v2.path=/api-docs

#server.contextPath=/v2

server.port=8080

swagger.enable=true

jdbc.driverClassName = com.mysql.jdbc.Driver

jdbc.url = jdbc:mysql://localhost:3306/websystique

jdbc.username = myuser

jdbc.password = mypassword

hibernate.dialect = org.hibernate.dialect.MySQLDialect

hibernate.show_sql = false

hibernate.format_sql = false

sourceLocation =/dev/input

destination =c\:/temp/output

username=jay

password=123

env=${pom.env}

ver=${pom.ver}

3. pom中

<springfox.version>2.8.0</springfox.version>

</properties>

<groupId>io.springfox</groupId>

<artifactId>springfox-swagger-ui</artifactId>

<version>${springfox.version}</version>

</dependency>

4. 使用system.load properties

java.util.Properties

package com.properties.util;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.util.Properties;

public class PropertiesUsage {

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

		Properties properties = new Properties();

		try (InputStream resourceAsStream = PropertiesUsage.class.getClassLoader().getResourceAsStream("application.properties");

				InputStreamReader inputStreamReader = new InputStreamReader(resourceAsStream,"UTF-8");){

			properties.load(inputStreamReader);

			System.out.println(properties.getProperty("hibernate.dialect"));

		}

	}

}

5. commons-configuration

package com.properties.util;

import java.util.HashMap;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.configuration.ConfigurationException;

import org.apache.commons.configuration.PropertiesConfiguration;

import org.apache.commons.configuration.reloading.FileChangedReloadingStrategy;

import org.apache.commons.lang.StringUtils;

import lombok.extern.slf4j.Slf4j;

@Slf4j

public class PropertiesConfigUtil {

	public static final String PROPS_SUFFIX = ".properties";

	private static Map<String, PropertiesConfiguration> configMap = new ConcurrentHashMap<String, PropertiesConfiguration>();

	private static PropertiesConfiguration getConfig(String configName) {

		// 去除空格

		configName = configName.trim();

		// 有后缀使用后缀 没后缀 添加后缀

		String configSig = StringUtils.endsWith(configName, PROPS_SUFFIX) ? configName : configName + PROPS_SUFFIX;

		if (configMap.containsKey(configSig)) {

			return configMap.get(configSig);

		}

		PropertiesConfiguration config = null;

		try {

			config = new PropertiesConfiguration();

			config.setEncoding("UTF-8");

			config.load(configSig);

			// 默认五秒检查一次

			config.setReloadingStrategy(new FileChangedReloadingStrategy());

			config.setThrowExceptionOnMissing(true);

			configMap.put(configSig, config);

		} catch (ConfigurationException e) {

			e.printStackTrace();

		}

		return config;

	}

	public static Map<String, String> getKeyValuePairs(String configSig) {

		PropertiesConfiguration config = getConfig(configSig);

		if (config == null) {

			return null;

		}

		Iterator<String> iters = config.getKeys();

		Map<String, String> retMap = new HashMap<String, String>();

		while (iters.hasNext()) {

			String beforeKey = iters.next();

			if (retMap.containsKey(beforeKey)) {

				log.warn(configSig + " configKey:" + beforeKey + " repeated!!");

			}

			retMap.put(beforeKey, config.getString(beforeKey));

		}

		return retMap;

	}

	/**

	 * 通过PropertiesConfiguration取得参数的方法

	 * <p>

	 *

	 * @return 。

	 */

	static public String getString(String configSig, String key) {

		return getConfig(configSig).getString(key);

	}

	static public String getString(String configSig, String key, String defaultValue) {

		return getConfig(configSig).getString(key, defaultValue);

	}

	static public int getInt(String configSig, String key) {

		return getConfig(configSig).getInt(key);

	}

	static public int getInt(String configSig, String key, int defaultValue) {

		return getConfig(configSig).getInt(key, defaultValue);

	}

	static public boolean getBoolean(String configSig, String key) {

		return getConfig(configSig).getBoolean(key);

	}

	static public boolean getBoolean(String configSig, String key, boolean defaultValue) {

		return getConfig(configSig).getBoolean(key, defaultValue);

	}

	static public double getDouble(String configSig, String key) {

		return getConfig(configSig).getDouble(key);

	}

	static public double getDouble(String configSig, String key, double defaultValue) {

		return getConfig(configSig).getDouble(key, defaultValue);

	}

	static public float getFloat(String configSig, String key) {

		return getConfig(configSig).getFloat(key);

	}

	static public float getFloat(String configSig, String key, float defaultValue) {

		return getConfig(configSig).getFloat(key, defaultValue);

	}

	static public long getLong(String configSig, String key) {

		return getConfig(configSig).getLong(key);

	}

	static public long getLong(String configSig, String key, long defaultValue) {

		return getConfig(configSig).getLong(key, defaultValue);

	}

	static public short getShort(String configSig, String key) {

		return getConfig(configSig).getShort(key);

	}

	static public short getShort(String configSig, String key, short defaultValue) {

		return getConfig(configSig).getShort(key, defaultValue);

	}

	static public List<Object> getList(String configSig, String key) {

		return getConfig(configSig).getList(key);

	}

	static public List<Object> getList(String configSig, String key, List<Object> defaultValue) {

		return getConfig(configSig).getList(key, defaultValue);

	}

	static public byte getByte(String configSig, String key) {

		return getConfig(configSig).getByte(key);

	}

	static public byte getByte(String configSig, String key, byte defaultValue) {

		return getConfig(configSig).getByte(key, defaultValue);

	}

	static public String[] getStringArray(String configSig, String key) {

		return getConfig(configSig).getStringArray(key);

	}

}

package com.properties.util;

public class PropertiesConfigurationTest {

	public static void main(String[] args) {

		System.out.println(PropertiesConfigUtil.getString("application.properties", "hibernate.dialect"));

	}

}

#springfox.documentation.swagger.v2.path=/api-docs

#server.contextPath=/v2

server.port=8080

swagger.enable=true

jdbc.driverClassName = com.mysql.jdbc.Driver

jdbc.url = jdbc:mysql://localhost:3306/websystique

jdbc.username = myuser

jdbc.password = mypassword

hibernate.dialect = org.hibernate.dialect.MySQLDialect

hibernate.show_sql = false

hibernate.format_sql = false

sourceLocation =/dev/input

destination =c\:/temp/output

6. @ConfigurationProperties将properties导入到类中

package com.properties.configurationProperties;

import org.apache.commons.lang.builder.ReflectionToStringBuilder;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.boot.context.properties.EnableConfigurationProperties;

import org.springframework.context.ConfigurableApplicationContext;

/*@EnableConfigurationProperties注解是用来开启对@ConfigurationProperties注解配置Bean的支持。

也就是@EnableConfigurationProperties注解告诉Spring Boot 使能支持@ConfigurationProperties*/

/*@ConfigurationProperties注解和@EnableConfigurationProperties配合使用*/

@SpringBootApplication

@EnableConfigurationProperties

public class DemoApplication {

	public static void main(String[] args) {

		try(ConfigurableApplicationContext configurableApplicationContext = SpringApplication.run(DemoApplication.class, args);){

			RedisProps redisProps = configurableApplicationContext.getBean(RedisProps.class);

			System.out.println(ReflectionToStringBuilder.toString(redisProps));

		}

	}

}

package com.properties.configurationProperties;

import java.util.List;

import java.util.Map;

import javax.validation.constraints.NotNull;

import org.springframework.boot.context.properties.ConfigurationProperties;

import org.springframework.context.annotation.Configuration;

import org.springframework.context.annotation.PropertySource;

import org.springframework.stereotype.Component;

import lombok.Data;

@Component

@PropertySource("classpath:application.yml")

@Configuration

@ConfigurationProperties(prefix = "spring.redis")

@Data

public class RedisProps {

	private int dbIndex;

	@NotNull

	private String hostname;

	private String password;

	@NotNull

	private int port;

	private long timeout;

	private List<Map<String, String>> poolConfig;

}

spring:

  redis:

    dbIndex: 0

    hostName: 192.168.58.133

    password: nmamtf

    port: 6379

    timeout: 0

    poolConfig:

      - maxIdle: 8

      - minIdle: 0

      - maxActive: 8

      - maxWait: -1

7. 使用第三方jar，比如Archaius

获取properties配置的更多相关文章

获取.properties配置文件属性值
public class TestProperties { /** * * @Title: printAllProperty * @Description: 输出所有配置信息 * @param pro ...
如何快速获取properties中的配置属性值
本文为博主原创,未经博主允许,不得转载: 在项目中,经常需要将一些配置的常量信息放到properties文件中,这样在项目的配置变动的时候,只需要修改配置文件中对应的配置常量即可. 在项目应用中,如 ...
@Value 注解获取properties值
转自:使用Spring 3的@value简化配置文件的读取 Spring 3支持@value注解的方式获取properties文件中的配置值,大简化了读取配置文件的代码. 1.在application ...
[坑]Spring利用注解@Value获取properties属性为null
今天在项目中想使用@Value来获取Springboot中properties中属性值. 场景:定义了一个工具类,想要获取一些配置参数,使用了@value来获取,但是死活也获取不到. 如何解决:在使用 ...
Spring利用注解@Value获取properties属性为null
今天在项目中想使用@Value来获取Springboot中properties中属性值. 场景:定义了一个工具类,想要获取一些配置参数,使用了@value来获取,但是死活也获取不到. 如何解决:在使用 ...
SpringBoot利用注解@Value获取properties属性为null
参考:https://www.cnblogs.com/zacky31/p/8609990.html 今天在项目中想使用@Value来获取Springboot中properties中属性值. 场景:定义 ...
Struts2学习：Action获取properties文件的值
配置文件路径: 配置内容: 方法一: Action内被调用的函数添加下段代码: Properties props = new Properties(); props.load(UploadFileAc ...
spring 通过@Value 获取properties文件中设置了属性，与@Value # 和$的区别
spring 获取 properties的值方法在spring.xml中配置很奇怪的是,在context-param 加载的spring.xml 不能使用 ${xxx} 必须交给Dispatche ...
Spring在代码中获取properties文件属性
这里介绍两种在代码中获取properties文件属性的方法. 使用@Value注解获取properties文件属性: 1.因为在下面要用到Spring的<util />配置,所以,首先要在 ...

随机推荐

postman简单使用
postman百度网盘下载地址:https://pan.baidu.com/s/1nuO2CGT 下载压缩后打开chrome输入chrome://extensions/ 把文件拖到浏览器中启动po ...
JSP、Java和Servlet获取当前工程的路径
JSP.Java和Servlet获取当前工程的路径: 1.JSP中取得路径: 以工程名为TEST为例: (1)得到包含工程名的当前页面全路径:request.getRequestURI()结果:/TE ...
Scala的=>作用
举例: var increase = (x: Int) => x + 1 increase(10) res0: Int = 11 类似于转化符号,=>指明这个函数把左边的东西(任何整数x) ...
Balanced Substring
You are given a string s consisting only of characters 0 and 1. A substring [l, r] of s is a string ...
使用Maven运行Solr（翻译）
Solr是一个使用开源的搜索服务器,它采用Lucene Core的索引和搜索功能构建,它可以用于几乎所有的编程语言实现可扩展的搜索引擎. Solr的虽然有很多优点,建立开发环境是不是其中之一.此博客条 ...
pandas之Dataframe转成dict+过滤+index去重
转成字典a = ['key1', 'key2', 'key3']b = ['1', '2', '3']data = pd.DataFrame(zip(a, b), columns=['project' ...
JAVA-Unit03： SQL（基础查询）、 SQL（关联查询）
Unit03: SQL(基础查询) . SQL(关联查询) 列别名当SELECT子句中查询的列是一个函数或者表达式时,那么查询出来的结果集中对应的该字段的名字就是这个函数或者表达式的名字.为此 ...
NAT功能测试
一.测试目标和功能: 1.内网设备可以访问外网的IP: 2.外网PC可以登录内网设备的telnet. 二.设备硬件结构 1.3135相当于交换机: 2.eth0.netra和业务网口通过内部端口连接3 ...
python 生成器和生成器表达式
1.生成器生成器的本质就是迭代器生成器的特点和迭代器一样.取值方式和迭代器一样(__next__(),send():给上一个yield传值) 生成器一般由生成器函数或者生成器表达式来创建其实就是 ...
one2many &&many2many
只记录双向的情况(双向是单向的一种) @OneToMany 和 @ManyToOne :一个Group 包含多个 User; Group.class package com.XX.model; im ...

获取properties配置

获取properties配置的更多相关文章

随机推荐

热门专题