本文只贴相关代码段,完整代码请移步至本人github,若是喜欢,可以star给予支持
作者:o_cYj
博客专栏:
https://blog.csdn.net/o_cYj
目录
对于config_toolkit及zookeeper的安装及创建节点请自己查阅相关资料
config_toolkit初始配置可以参考https://github.com/dangdangdotcom/config-toolkit
-Dconfig.zookeeper.connectString=localhost:2181
-Dconfig.rootNode=/project/module
-Dconfig.version=1.0.0
-Dconfig.groupName=sb2
其中
connectString为zookeeper的连接地址加端口号
rootNode为在zookeeper创建的根节点
version为版本号
groupName是你自己创建的组管理名称
<dependency>
<groupId>com.dangdang</groupId>
<artifactId>config-toolkit</artifactId>
<version>3.3.2-RELEASE</version>
</dependency>
在applicationContext.xml中引入config_toolkit的相关配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:c="http://www.springframework.org/schema/c"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd"
default-lazy-init="true">
<description>Spring公共配置</description>
<bean id="configProfile" class="com.dangdang.config.service.zookeeper.ZookeeperConfigProfile">
<constructor-arg name="connectStr"
value="#{systemProperties['config.zookeeper.connectString']}" />
<constructor-arg name="rootNode" value="#{systemProperties['config.rootNode']}" />
<constructor-arg name="version" value="#{systemProperties['config.version']}" />
</bean>
<bean id="configGroupSources" class="com.dangdang.config.service.support.spring.ConfigGroupSourceFactory" factory-method="create">
<constructor-arg name="configGroups">
<list>
<bean class="com.dangdang.config.service.zookeeper.ZookeeperConfigGroup" c:configProfile-ref="configProfile" c:node="#{systemProperties['config.groupName']}" c:enumerable="true" />
<bean class="com.dangdang.config.service.zookeeper.ZookeeperConfigGroup" c:configProfile-ref="configProfile" c:node="apps_common" c:enumerable="true" />
<bean class="com.dangdang.config.service.file.FileConfigGroup">
<constructor-arg name="configProfile">
<bean class="com.dangdang.config.service.file.FileConfigProfile">
<constructor-arg name="fileEncoding" value="utf-8" />
<constructor-arg name="contentType" value="properties" />
</bean>
</constructor-arg>
<constructor-arg name="location" value="classpath:application.properties" />
<constructor-arg name="enumerable" value="true"/>
</bean>
</list>
</constructor-arg>
</bean>
<bean class="org.springframework.context.support.PropertySourcesPlaceholderConfigurer">
<property name="order" value="1" />
<property name="ignoreUnresolvablePlaceholders" value="true" />
<property name="propertySources" ref="configGroupSources" />
</bean>
</beans>
application.properties
里面获取application.properties
configGroups
中的顺序来读取,所以会优先使用这里面前面组中所拥有的参数configGroupSources
的bean,我们后面主要从此bean中获取相关的数据完成到这里,我们如果在配置中心配置了相关的server.port
和server.contextPath
,就已经可以修改启动时的端口号和上下文了
此文件用于获取上面设置的configGroupSources
package com.chenyingjun.springboot2.utils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.annotation.Configuration;
/**
* 静态获取Bean
*
* @author chenyingjun
* @version 2018年08月24日
* @since 1.0
*
*/
@Configuration
public class SpringContextUtil implements ApplicationContextAware {
private static ApplicationContext applicationContext;
/**
* 重写上下文信息
* @param applicationContext 上下文
* @throws BeansException e
*/
@Override
public void setApplicationContext(ApplicationContext applicationContext)
throws BeansException {
SpringContextUtil.applicationContext = applicationContext;
}
/**
* 获取上下文
* @return 上下文
*/
public static ApplicationContext getApplicationContext() {
return applicationContext;
}
/**
* 获取指定的bean
* @param name bean名
* @return bean对象
* @throws BeansException e
*/
public static Object getBean(String name) throws BeansException {
try {
return applicationContext.getBean(name);
} catch (Exception e) {
throw new RuntimeException("获取的Bean不存在!");
}
}
public static <T> T getBean(String name, Class<T> requiredType)
throws BeansException {
return applicationContext.getBean(name, requiredType);
}
public static boolean containsBean(String name) {
return applicationContext.containsBean(name);
}
public static boolean isSingleton(String name)
throws NoSuchBeanDefinitionException {
return applicationContext.isSingleton(name);
}
public static Class<? extends Object> getType(String name)
throws NoSuchBeanDefinitionException {
return applicationContext.getType(name);
}
public static String[] getAliases(String name)
throws NoSuchBeanDefinitionException {
return applicationContext.getAliases(name);
}
}
package com.chenyingjun.springboot2.utils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.env.MutablePropertySources;
import org.springframework.core.env.PropertySource;
import java.util.Iterator;
import java.util.NoSuchElementException;
/**
* 配置参数信息
* @author chenyingjun
* @date 2018年8月24日
*/
public class PropertiesLoaderUtil {
/**
* 日志
*/
private static Logger logger = LoggerFactory.getLogger(PropertiesLoaderUtil.class);
/**
* properties
*/
private MutablePropertySources propertySources;
/**
* 加载配置信息
*/
public PropertiesLoaderUtil() {
try {
this.propertySources = (MutablePropertySources) SpringContextUtil.getBean("configGroupSources");
} catch (Exception var3) {
logger.error("没有配置统一配置服务");
}
}
/**
* 根据key值获取配置信息
* @param key key
* @return 配置信息
*/
private String getValue(String key) {
String systemProperty = System.getProperty(key);
if (systemProperty != null) {
return systemProperty;
} else {
if (this.propertySources != null) {
Iterator iter = this.propertySources.iterator();
while(iter.hasNext()) {
PropertySource<?> str = (PropertySource)iter.next();
if (str.containsProperty(key)) {
return str.getProperty(key).toString();
}
}
}
return null;
}
}
/**
* 根据key值获取配置信息
* @param key key
* @return 配置信息
*/
public String getProperty(String key) {
String value = this.getValue(key);
if (value == null) {
throw new NoSuchElementException();
} else {
return value;
}
}
/**
* 根据key值获取配置信息
* @param key key
* @param defaultValue 默认值
* @return 配置信息
*/
public String getProperty(String key, String defaultValue) {
String value = this.getValue(key);
return value != null ? value : defaultValue;
}
}
package com.chenyingjun.springboot2.utils;
/**
* 配置信息获取
* @author chenyingjun
* @date 2018年8月13日
*/
public class GlobalUtil {
/**
* 配置参数信息
*/
private static PropertiesLoaderUtil propertiesLoaderUtil;
/**
* 构建函数
*/
public GlobalUtil() {
}
/**
* 根据key值获取配置信息
* @param key key
* @return 配置信息
*/
public static String getConfig(String key) {
return getPropertiesLoaderUtil().getProperty(key);
}
/**
* 根据key值获取配置信息
* @param key key
* @param defaultValue 默认值
* @return 配置信息
*/
public static String getConfig(String key, String defaultValue) {
return getPropertiesLoaderUtil().getProperty(key, defaultValue);
}
public static int getIntConfig(String key) {
return Integer.valueOf(getConfig(key)).intValue();
}
public static int getIntConfig(String key, int defaultValue) {
return Integer.valueOf(getConfig(key, String.valueOf(defaultValue))).intValue();
}
public static boolean getBooleanConfig(String key) {
return Boolean.valueOf(getConfig(key)).booleanValue();
}
public static boolean getBooleanConfig(String key, boolean defaultValue) {
return Boolean.valueOf(getConfig(key, String.valueOf(defaultValue))).booleanValue();
}
public static long getLongConfig(String key) {
return Long.valueOf(getConfig(key)).longValue();
}
public static long getLongConfig(String key, long defaultValue) {
return Long.valueOf(getConfig(key, String.valueOf(defaultValue))).longValue();
}
/**
* 加载配置文件
* @return 配置信息
*/
private static PropertiesLoaderUtil getPropertiesLoaderUtil() {
if (null == propertiesLoaderUtil) {
propertiesLoaderUtil = new PropertiesLoaderUtil();
}
return propertiesLoaderUtil;
}
}
此时,我们可以自由的对配置中心里面的数据进行获取了
@Value("${systemProfiles.title}")
private String testConfigValue;
String title = GlobalUtil.getConfig("systemProfiles.title", "无值");
spring.redis.host=${redis.host}
spring.redis.port=${redis.port}
<constructor-arg index="2" value="${redis.port}" name="port" type="int"/>
package com.chenyingjun.springboot2.config;
import com.chenyingjun.springboot2.utils.GlobalUtil;
import freemarker.template.Configuration;
import freemarker.template.TemplateModelException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.annotation.PostConstruct;
/**
* FreeMarker工具类配置
*
* @author chenyingjun
* @since 1.0
* @version 2018年8月15日 chenyingjun
*/
@Component
public class MyFreeMarkerConfig {
/** Logger */
private final Logger logger = LoggerFactory.getLogger(MyFreeMarkerConfig.class);
/** Configuration */
@Autowired
private Configuration freeMarkerConfiguration;
/**
* 配置工具类
*/
@PostConstruct
public void freemarkerConfig() {
try {
freeMarkerConfiguration.setSharedVariable("global", new GlobalUtil());
} catch (TemplateModelException e) {
logger.error(e.toString(), e);
}
}
}
这样,我们就能在ftl页面中获取我们需要的参数了
${global.getConfig("systemProfiles.title")?html}