SpringBoot四種讀取properties文件的方式(小結)
前言
在項目開發(fā)中經(jīng)常會用到配置文件,配置文件的存在解決了很大一份重復的工作。今天就分享四種在Springboot中獲取配置文件的方式。
注:前三種測試配置文件為springboot默認的application.properties文件
#######################方式一######################### com.zyd.type3=Springboot - @ConfigurationProperties com.zyd.title3=使用@ConfigurationProperties獲取配置文件 #map com.zyd.login[username]=zhangdeshuai com.zyd.login[password]=zhenshuai com.zyd.login[callback]=http://www.flyat.cc #list com.zyd.urls[0]=http://ztool.cc com.zyd.urls[1]=http://ztool.cc/format/js com.zyd.urls[2]=http://ztool.cc/str2image com.zyd.urls[3]=http://ztool.cc/json2Entity com.zyd.urls[4]=http://ztool.cc/ua #######################方式二######################### com.zyd.type=Springboot - @Value com.zyd.title=使用@Value獲取配置文件 #######################方式三######################### com.zyd.type2=Springboot - Environment com.zyd.title2=使用Environment獲取配置文件
一、@ConfigurationProperties方式
自定義配置類:PropertiesConfig.java
package com.zyd.property.config;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.boot.context.properties.ConfigurationProperties;
//import org.springframework.context.annotation.PropertySource;
import org.springframework.stereotype.Component;
/**
* 對應上方配置文件中的第一段配置
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午4:34:18
* @version V1.0
* @since JDK : 1.7
*/
@Component
@ConfigurationProperties(prefix = "com.zyd")
// PropertySource默認取application.properties
// @PropertySource(value = "config.properties")
public class PropertiesConfig {
public String type3;
public String title3;
public Map<String, String> login = new HashMap<String, String>();
public List<String> urls = new ArrayList<>();
public String getType3() {
return type3;
}
public void setType3(String type3) {
this.type3 = type3;
}
public String getTitle3() {
try {
return new String(title3.getBytes("ISO-8859-1"), "UTF-8");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return title3;
}
public void setTitle3(String title3) {
this.title3 = title3;
}
public Map<String, String> getLogin() {
return login;
}
public void setLogin(Map<String, String> login) {
this.login = login;
}
public List<String> getUrls() {
return urls;
}
public void setUrls(List<String> urls) {
this.urls = urls;
}
}
程序啟動類:Applaction.java
package com.zyd.property;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.zyd.property.config.PropertiesConfig;
/**
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午3:49:30
* @version V1.0
* @since JDK : 1.7
*/
@SpringBootApplication
@RestController
public class Applaction {
@Autowired
private PropertiesConfig propertiesConfig;
/**
*
* 第一種方式:使用`@ConfigurationProperties`注解將配置文件屬性注入到配置對象類中
*
* @author zyd
* @throws UnsupportedEncodingException
* @since JDK 1.7
*/
@RequestMapping("/config")
public Map<String, Object> configurationProperties() {
Map<String, Object> map = new HashMap<String, Object>();
map.put("type", propertiesConfig.getType3());
map.put("title", propertiesConfig.getTitle3());
map.put("login", propertiesConfig.getLogin());
map.put("urls", propertiesConfig.getUrls());
return map;
}
public static void main(String[] args) throws Exception {
SpringApplication application = new SpringApplication(Applaction.class);
application.run(args);
}
}
訪問結果:
{"title":"使用@ConfigurationProperties獲取配置文件","urls":["http://ztool.cc","http://ztool.cc/format/js","http://ztool.cc/str2image","http://ztool.cc/json2Entity","http://ztool.cc/ua"],"login":{"username":"zhangdeshuai","callback":"http://www.flyat.cc","password":"zhenshuai"},"type":"Springboot - @ConfigurationProperties"}
二、使用@Value注解方式
程序啟動類:Applaction.java
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午3:49:30
* @version V1.0
* @since JDK : 1.7
*/
@SpringBootApplication
@RestController
public class Applaction {
@Value("${com.zyd.type}")
private String type;
@Value("${com.zyd.title}")
private String title;
/**
*
* 第二種方式:使用`@Value("${propertyName}")`注解
*
* @author zyd
* @throws UnsupportedEncodingException
* @since JDK 1.7
*/
@RequestMapping("/value")
public Map<String, Object> value() throws UnsupportedEncodingException {
Map<String, Object> map = new HashMap<String, Object>();
map.put("type", type);
// *.properties文件中的中文默認以ISO-8859-1方式編碼,因此需要對中文內(nèi)容進行重新編碼
map.put("title", new String(title.getBytes("ISO-8859-1"), "UTF-8"));
return map;
}
public static void main(String[] args) throws Exception {
SpringApplication application = new SpringApplication(Applaction.class);
application.run(args);
}
}
訪問結果:
{"title":"使用@Value獲取配置文件","type":"Springboot - @Value"}
三、使用Environment
程序啟動類:Applaction.java
package com.zyd.property;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午3:49:30
* @version V1.0
* @since JDK : 1.7
*/
@SpringBootApplication
@RestController
public class Applaction {
@Autowired
private Environment env;
/**
*
* 第三種方式:使用`Environment`
*
* @author zyd
* @throws UnsupportedEncodingException
* @since JDK 1.7
*/
@RequestMapping("/env")
public Map<String, Object> env() throws UnsupportedEncodingException {
Map<String, Object> map = new HashMap<String, Object>();
map.put("type", env.getProperty("com.zyd.type2"));
map.put("title", new String(env.getProperty("com.zyd.title2").getBytes("ISO-8859-1"), "UTF-8"));
return map;
}
public static void main(String[] args) throws Exception {
SpringApplication application = new SpringApplication(Applaction.class);
application.run(args);
}
}
訪問結果:
{"title":"使用Environment獲取配置文件","type":"Springboot - Environment"}
四、使用PropertiesLoaderUtils
app-config.properties
#### 通過注冊監(jiān)聽器(`Listeners`) + `PropertiesLoaderUtils`的方式 com.zyd.type=Springboot - Listeners com.zyd.title=使用Listeners + PropertiesLoaderUtils獲取配置文件 com.zyd.name=zyd com.zyd.address=Beijing com.zyd.company=in
PropertiesListener.java 用來初始化加載配置文件
package com.zyd.property.listener;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.context.ApplicationListener;
import com.zyd.property.config.PropertiesListenerConfig;
/**
* 配置文件監(jiān)聽器,用來加載自定義配置文件
*
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午3:38:25
* @version V1.0
* @since JDK : 1.7
*/
public class PropertiesListener implements ApplicationListener<ApplicationStartedEvent> {
private String propertyFileName;
public PropertiesListener(String propertyFileName) {
this.propertyFileName = propertyFileName;
}
@Override
public void onApplicationEvent(ApplicationStartedEvent event) {
PropertiesListenerConfig.loadAllProperties(propertyFileName);
}
}
PropertiesListenerConfig.java 加載配置文件內(nèi)容
package com.zyd.property.config;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.springframework.beans.BeansException;
import org.springframework.core.io.support.PropertiesLoaderUtils;
/**
* 第四種方式:PropertiesLoaderUtils
*
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午3:32:37
* @version V1.0
* @since JDK : 1.7
*/
public class PropertiesListenerConfig {
public static Map<String, String> propertiesMap = new HashMap<>();
private static void processProperties(Properties props) throws BeansException {
propertiesMap = new HashMap<String, String>();
for (Object key : props.keySet()) {
String keyStr = key.toString();
try {
// PropertiesLoaderUtils的默認編碼是ISO-8859-1,在這里轉(zhuǎn)碼一下
propertiesMap.put(keyStr, new String(props.getProperty(keyStr).getBytes("ISO-8859-1"), "utf-8"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (java.lang.Exception e) {
e.printStackTrace();
}
}
}
public static void loadAllProperties(String propertyFileName) {
try {
Properties properties = PropertiesLoaderUtils.loadAllProperties(propertyFileName);
processProperties(properties);
} catch (IOException e) {
e.printStackTrace();
}
}
public static String getProperty(String name) {
return propertiesMap.get(name).toString();
}
public static Map<String, String> getAllProperty() {
return propertiesMap;
}
}
Applaction.java 啟動類
package com.zyd.property;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.zyd.property.config.PropertiesListenerConfig;
import com.zyd.property.listener.PropertiesListener;
/**
* @author <a href="mailto:yadong.zhang0415@gmail.com" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" >yadong.zhang</a>
* @date 2017年6月1日 下午3:49:30
* @version V1.0
* @since JDK : 1.7
*/
@SpringBootApplication
@RestController
public class Applaction {
/**
*
* 第四種方式:通過注冊監(jiān)聽器(`Listeners`) + `PropertiesLoaderUtils`的方式
*
* @author zyd
* @throws UnsupportedEncodingException
* @since JDK 1.7
*/
@RequestMapping("/listener")
public Map<String, Object> listener() {
Map<String, Object> map = new HashMap<String, Object>();
map.putAll(PropertiesListenerConfig.getAllProperty());
return map;
}
public static void main(String[] args) throws Exception {
SpringApplication application = new SpringApplication(Applaction.class);
// 第四種方式:注冊監(jiān)聽器
application.addListeners(new PropertiesListener("app-config.properties"));
application.run(args);
}
}
訪問結果:
{"com.zyd.name":"zyd","com.zyd.address":"Beijing","com.zyd.title":"使用Listeners + PropertiesLoaderUtils獲取配置文件","com.zyd.type":"Springboot - Listeners","com.zyd.company":"in"}
到此這篇關于SpringBoot四種讀取properties文件的方式(小結)的文章就介紹到這了,更多相關SpringBoot讀取properties文件內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關文章希望大家以后多多支持腳本之家!
相關文章
如何使用jakarta.json進行json序列化和反序列化
java里,json框架何其多,常見的有jackson、fastjson、gson等,本文重點介紹如何使用jakarta.json進行json序列化和反序列化,需要的朋友可以參考下,2024-07-07
springboot+redis分布式鎖實現(xiàn)模擬搶單
這篇文章主要介紹了springboot+redis分布式鎖實現(xiàn)模擬搶單,小編覺得挺不錯的,現(xiàn)在分享給大家,也給大家做個參考。一起跟隨小編過來看看吧2019-03-03
idea配置檢查XML中SQL語法及書寫sql語句智能提示的方法
idea連接了數(shù)據(jù)庫,也可以執(zhí)行SQL查到數(shù)據(jù),但是無法識別sql語句中的表導致沒有提示,下面這篇文章主要給大家介紹了關于idea配置檢查XML中SQL語法及書寫sql語句智能提示的相關資料,需要的朋友可以參考下2023-03-03
Spring Security+Spring Data Jpa如何進行安全管理
這篇文章主要介紹了Spring Security+Spring Data Jpa如何進行安全管理,幫助大家更好的理解和學習Spring Security框架,感興趣的朋友可以了解下2020-09-09

