spring cloud config--client

时间：2023-03-09 16:49:11
spring cloud config--client

概述

之前我们简单的搭建了一个单点的config-server服务，实现配置文件的统一管理，本次文章将实现config-client是如何从config-server中获取到统一配置文件信息的

1.创建springcloud--ssmServer服务

此服务是之前的springBoot继承了mybatis和springMvc等框架的完整项目，这里用来当做config-client，模仿真实的环境

父项目pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <!-- 父项目骨架 -->

    <groupId>com.pupeiyuan.springcloud</groupId>

    <artifactId>spring-Cloud</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>pom</packaging>

    <!-- 包含的子项目 -->

    <modules>

        <module>springcloud-eureka</module>

        <module>springcloud-configServer</module>

        <module>springcloud-configClient</module>

        <module>springcloud-ssmServer</module>

    </modules>

    <!-- java版本信息 -->

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

    </properties>

    <!-- springboot以来的父项目 -->

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.2.RELEASE</version>

    </parent>

    <dependencyManagement>

        <dependencies>

            <!-- springcloud版本依赖 -->

            <dependency>

                <groupId>org.springframework.cloud</groupId>

                <artifactId>spring-cloud-dependencies</artifactId>

                <version>Dalston.SR3</version>

                <type>pom</type>

                <scope>import</scope>

            </dependency>

        </dependencies>

    </dependencyManagement>

    <build>

        <plugins>

            <!-- maven插件 -->

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

        </plugins>

    </build>

</project>

此项目pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <parent>

        <groupId>com.pupeiyuan.springcloud</groupId>

        <artifactId>spring-Cloud</artifactId>

        <version>0.0.1-SNAPSHOT</version>

    </parent>

    <artifactId>springcloud-ssmServer</artifactId>

    <dependencies>

        <!-- 单元测试 -->

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <scope>test</scope>

        </dependency>

        <!-- 支持springWEB web支持: 1、web mvc; 2、restful; 3、jackjson支持; 4、aop ........ -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <!-- AOP依赖模块 -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-aop</artifactId>

        </dependency>

        <dependency>

            <groupId>org.aspectj</groupId>

            <artifactId>aspectjrt</artifactId>

            <version>1.8.7</version>

        </dependency>

        <!-- jdbc -->

        <dependency>

            <groupId>org.springframework</groupId>

            <artifactId>spring-jdbc</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-jdbc</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-tomcat</artifactId>

            <scope>provided</scope>

        </dependency>

        <!-- Mybatis -->

        <dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>1.3.1</version>

        </dependency>

        <!-- 通用Mapper -->

        <dependency>

            <groupId>tk.mybatis</groupId>

            <artifactId>mapper-spring-boot-starter</artifactId>

            <version>RELEASE</version>

        </dependency>

        <!-- 分页助手 -->

        <dependency>

            <groupId>com.github.pagehelper</groupId>

            <artifactId>pagehelper-spring-boot-starter</artifactId>

            <version>1.1.0</version>

        </dependency>

        <dependency>

            <groupId>com.github.jsqlparser</groupId>

            <artifactId>jsqlparser</artifactId>

            <version>0.9.1</version>

        </dependency>

        <!-- mysql 数据库驱动. -->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

        </dependency>

        <!-- 连接池 -->

        <dependency>

            <groupId>com.alibaba</groupId>

            <artifactId>druid-spring-boot-starter</artifactId>

            <version>1.1.9</version>

        </dependency>

        <!-- jstl -->

        <dependency>

            <groupId>jstl</groupId>

            <artifactId>jstl</artifactId>

            <version>1.2</version>

        </dependency>

        <dependency>

            <groupId>taglibs</groupId>

            <artifactId>standard</artifactId>

            <version>1.1.2</version>

        </dependency>

        <!-- JSP相关 -->

        <dependency>

            <groupId>com.github.jsqlparser</groupId>

            <artifactId>jsqlparser</artifactId>

            <version>0.9.1</version>

        </dependency>

        <dependency>

            <groupId>org.apache.tomcat.embed</groupId>

            <artifactId>tomcat-embed-jasper</artifactId>

            <scope>provided</scope>

        </dependency>

        <!-- httpclient -->

        <dependency>

            <groupId>org.apache.httpcomponents</groupId>

            <artifactId>httpclient</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

            <optional>true</optional>

            <scope>true</scope>

        </dependency>

        <!-- spring cloud -->

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-config</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.cloud</groupId>

            <artifactId>spring-cloud-starter-eureka</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <!-- java编译插件 -->

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-compiler-plugin</artifactId>

                <configuration>

                    <source>1.7</source>

                    <target>1.7</target>

                    <encoding>UTF-8</encoding>

                </configuration>

            </plugin>

            <!-- 这是spring boot devtool plugin -->

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

                <configuration>

                    <!--fork : 如果没有该项配置，肯呢个devtools不会起作用，即应用不会restart -->

                    <fork>true</fork>

                </configuration>

            </plugin>

        </plugins>

    </build>

</project>

创建 bootstrap.properties

config文件中这里要创建bootstrap.properties或者bootstrap.yml，一些关于config的配置需要在这里配置，因为spring cloud默认从这个配置文件中读取config，其他的配置还可以从燕来的配置文件application.properties中来设置

spring.application.name=multiple #这里的名字对应的配置服务中的应用名称{application}

spring.cloud.config.discovery.enabled=true

spring.cloud.config.discovery.service-id=pringcloud-configServer #这里是config--server在eureka中注册的服务

spring.cloud.config.profile=test #这里名字对应环境的标识{profile}

spring.cloud.config.label=master

eureka.client.serviceUrl.defaultZone=http://root:123456@peer1:8000/eureka

eureka.instance.prefer-ip-address=true

MyBatisConfig.java

此配置文件是初始化datasource注册bean的

package com.pupeiyuan.config;

import java.sql.SQLException;

import java.util.HashMap;

import java.util.Map;

import java.util.Properties;

import javax.sql.DataSource;

import org.apache.ibatis.session.SqlSessionFactory;

import org.mybatis.spring.SqlSessionFactoryBean;

import org.mybatis.spring.SqlSessionTemplate;

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

import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;

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

import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.core.annotation.Order;

import org.springframework.core.io.Resource;

import org.springframework.core.io.support.PathMatchingResourcePatternResolver;

import org.springframework.core.io.support.ResourcePatternResolver;

import org.springframework.jdbc.datasource.DataSourceTransactionManager;

import org.springframework.transaction.PlatformTransactionManager;

import com.alibaba.druid.pool.DruidDataSource;

import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;

import com.github.pagehelper.PageHelper;

import com.pupeiyuan.core.DataSourceKey;

import com.pupeiyuan.core.DynamicRoutingDataSource;

import tk.mybatis.spring.annotation.MapperScan;

import tk.mybatis.spring.mapper.MapperScannerConfigurer;

@Configuration

@MapperScan("com.pupeiyuan.mapper")

public class MyBatisConfig {

      @Bean

        //此处的"multiple.datasource.master"需要你在application.properties中配置，详细信息看下面贴出的application.properties文件。

        @ConfigurationProperties(prefix = "multiple.datasource.master")

        public DataSource dbMaster() {

          DruidDataSource druidDataSource = DruidDataSourceBuilder.create().build();

          //配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙

            try {

                druidDataSource.setFilters("stat,wall,log4j");

            } catch (SQLException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

            // 通过connectProperties属性来打开mergeSql功能；慢SQL记录

            druidDataSource.setConnectionProperties("druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000");

            //合并多个DruidDataSource的监控数据

            druidDataSource.setUseGlobalDataSourceStat(true);

            return druidDataSource;

        }

        @Bean

        @ConfigurationProperties(prefix = "multiple.datasource.slave")

        public DataSource dbSlave1() {

             DruidDataSource druidDataSource = DruidDataSourceBuilder.create().build();

              //配置监控统计拦截的filters，去掉后监控界面sql无法统计，'wall'用于防火墙

                try {

                    druidDataSource.setFilters("stat,wall,log4j");

                } catch (SQLException e) {

                    // TODO Auto-generated catch block

                    e.printStackTrace();

                }

                // 通过connectProperties属性来打开mergeSql功能；慢SQL记录

                druidDataSource.setConnectionProperties("druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000");

                //合并多个DruidDataSource的监控数据

                druidDataSource.setUseGlobalDataSourceStat(true);

                return druidDataSource;

        }

        /**

         * 核心动态数据源

         *

         * @return 数据源实例

         */

        @Bean

        public DataSource dynamicDataSource() {

            DynamicRoutingDataSource dataSource = new DynamicRoutingDataSource();

            dataSource.setDefaultTargetDataSource(dbMaster());

            Map<Object, Object> dataSourceMap = new HashMap<>(4);

            dataSourceMap.put(DataSourceKey.DB_MASTER, dbMaster());

            dataSourceMap.put(DataSourceKey.DB_SLAVE1, dbSlave1());

            dataSource.setTargetDataSources(dataSourceMap);

            return dataSource;

        }

        @Bean

        public SqlSessionFactory sqlSessionFactory() throws Exception {

            SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean();

            sqlSessionFactoryBean.setDataSource(dynamicDataSource());

            //此处设置为了解决找不到mapper文件的问题

            //sqlSessionFactoryBean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath:mapper/*.xml"));

            return sqlSessionFactoryBean.getObject();

        }

        @Bean

        public SqlSessionTemplate sqlSessionTemplate() throws Exception {

            return new SqlSessionTemplate(sqlSessionFactory());

        }

        /**

         * 事务管理

         *

         * @return 事务管理实例

         */

        @Bean

        public PlatformTransactionManager platformTransactionManager() {

            return new DataSourceTransactionManager(dynamicDataSource());

        }

}

2.下面我们在启动了config-server的前提下，启动此项目，看是否能获取到数据源信息，并成功装配到spring

spring cloud config--client

这里测试没有问题，说明已经成功的从config-server中获取到了配置信息

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