分布式系统一定是由多个节点组成的系统，是不同的系统部在不同的服务器上,服务器之间相互调用。那java分布式项目如何搭建?下面来我们就来给大家讲解一下这方面的内容。
准备工具:eclipse,装有CentOS7系统的VMwarm,zookeeper.......最重要的,一台三年高龄的老人机.
1.首先创建一个父类的maven项目,打包方式为pom.
在eclipse中创建一个父类maven项目,打包方式为pom.为什么要创建一个父类的maven项目呢?因为要使用这个maven项目进行各个jar包版本的管理,子类想要jar包直接跟父类要就可以.
<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> <groupId>com.itqf</groupId> <artifactId>sping-parent</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>pom</packaging> <!-- 定义所有jar包的版本 --> <properties> <junit.version>4.12</junit.version> <spring.version>4.2.4.RELEASE</spring.version> <mybatis.version>3.2.8</mybatis.version> <mybatis.spring.version>1.2.2</mybatis.spring.version> <mybatis.paginator.version>1.2.15</mybatis.paginator.version> <mysql.version>5.1.32</mysql.version> <slf4j.version>1.6.4</slf4j.version> <jackson.version>2.4.2</jackson.version> <druid.version>1.0.9</druid.version> <httpclient.version>4.3.5</httpclient.version> <jstl.version>1.2</jstl.version> <servlet-api.version>2.5</servlet-api.version> <jsp-api.version>2.0</jsp-api.version> <joda-time.version>2.5</joda-time.version> <commons-lang3.version>3.3.2</commons-lang3.version> <commons-io.version>1.3.2</commons-io.version> <commons-net.version>3.3</commons-net.version> <pagehelper.version>3.4.2-fix</pagehelper.version> <jsqlparser.version>0.9.1</jsqlparser.version> <commons-fileupload.version>1.3.1</commons-fileupload.version> <jedis.version>2.7.2</jedis.version> <solrj.version>4.10.3</solrj.version> <dubbo.version>2.5.3</dubbo.version> <zookeeper.version>3.4.7</zookeeper.version> <zkclient.version>0.1</zkclient.version> <activemq.version>5.11.2</activemq.version> <freemarker.version>2.3.23</freemarker.version> <quartz.version>2.2.2</quartz.version> </properties> <!-- 管理所有项目中用到的jar包，并不做真正的依赖 --> <dependencyManagement> <dependencies> <!-- 时间操作组件 --> <dependency> <groupId>joda-time</groupId>
2.1 创建maven聚合工程,继承父工程.
聚合工程:可以将项目中的controller层,view层等都独立成一个工程,最终运行的时候整合到一起运行.
<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.itqf</groupId> <artifactId>sping-parent</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <groupId>com.itqf</groupId> <artifactId>sping-manager</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>pom</packaging> <dependencies> <dependency> <groupId>com.itqf</groupId> <artifactId>sping-common</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.tomcat.maven</groupId> <artifactId>tomcat7-maven-plugin</artifactId> <configuration> <port>8083</port> <path>/</path> </configuration> </plugin> </plugins> </build> <modules> <module>sping-manager-pojo</module> <module>sping-manager-interface</module> <module>sping-manager-service</module> <module>sping-manager-mapper</module> </modules> </project>
2.2 在聚合工程中创建maven Module,命名sping-manager-pojo(实体类层).
pojo是一个普通的jar格式,不需要依赖父工程.
<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.itqf</groupId> <artifactId>sping-manager</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>sping-manager-pojo</artifactId> </project>
导入依赖jar包.
<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.itqf</groupId>
<artifactId>sping-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>sping-manager-mapper</artifactId>
<!-- 依赖pojo -->
<dependencies>
<dependency>
<groupId>com.itqf</groupId>
<artifactId>sping-manager-pojo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- Mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>${mybatis.spring.version}</version>
</dependency>
<dependency>
<groupId>com.github.miemiedev</groupId>
<artifactId>mybatis-paginator</artifactId>
<version>${mybatis.paginator.version}</version>
</dependency>
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>${pagehelper.version}</version>
</dependency>
<!-- MySql -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
</dependency>
<!-- 连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
</dependencies>
</project>2.4 在聚合工程中创建sping-manager-interface(接口),将所有的service接口都放到独立的工程当中. 接口中方法返回值如果是实体类,需要用到pojo.所以在pom中依赖pojo
<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.itqf</groupId> <artifactId>sping-manager</artifactId> <version>0.0.1-SNAPSHOT</version> </parent> <artifactId>sping-manager-interface</artifactId> <dependencies> <dependency> <groupId>com.itqf</groupId> <artifactId>sping-manager-pojo</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> </project>
因为将controller层与service层分开了,所以在运行启动的时候要讲controller和service单独使用tomcat发布,将聚合工程中所需要的配置文件都放入service中,这样在Tomcat启动的时候回将配置文件都进行加载整合.
service需要用到接口,所以依赖接口sping-manager-interface.
service需要用到pojo,也需要调用到mapper,所以直接依赖mapper就可以,以为mapper已经依赖了pojo (依赖传递) .
service需要被spring管理,让spring给service创建对象
service需要dubbo的包(后面对dubbo进行介绍)
service需要使用到SOA,将service当成一个服务发布出去.
配置文件
SqlMapConfig.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> </configuration>
db.driver = com.mysql.jdbc.Driver db.url = jdbc: mysql: //localhost:3306/taotao?characterEncoding=UTF-8 db.username = root db.password = root
applicationContext-tx.xml
<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.2.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd"> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <tx:advice id="adviceId" transaction-manager="txManager"> <tx:attributes> <tx:method name="add*" propagation="REQUIRED"/> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="del*" propagation="REQUIRED"/> <tx:method name="find*" propagation="SUPPORTS" read-only="true"/> <tx:method name="get*" propagation="SUPPORTS" read-only="true"/> </tx:attributes> </tx:advice> <aop:config> <aop:advisor advice-ref="adviceId" pointcut="execution(* com.itqf.service..*.*(..))"/> </aop:config> </beans>
applicationContext-dao.xml
<?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:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:dubbo="http://code.alibabatech.com/schema/dubbo"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
http://code.alibabatech.com/schema/dubbo
http://code.alibabatech.com/schema/dubbo/dubbo.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.2.xsd">
<context:property-placeholder location="classpath:resource/*.properties"/>
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${db.driver}"></property>
<property name="url" value="${db.url}"></property>
<property name="username" value="${db.username}"></property>
<property name="password" value="${db.password}"></property>
<property name="maxActive" value="10"></property>
<property name="minIdle" value="5"></property>
</bean>
<bean class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis/SqlMapConfig.xml"></property>
</bean>
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.itqf.mapper"></property>
</bean>
</beans><?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.2.xsd"> <context:component-scan base-package="com.itqf.service"></context:component-scan> </beans>
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.qianfeng</groupId>
<artifactId>sping-manager</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>sping-manager-service</artifactId>
<packaging>war</packaging>
<dependencies>
<dependency>
<groupId>com.qianfeng</groupId>
<artifactId>sping-manager-interface</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.qianfeng</groupId>
<artifactId>sping-manager-mapper</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
</project>
以上就是java实现分布式项目搭建的方法，从文中看，操作起来还是比较复杂的，不过只要多研究多练习就会熟悉了。最后大家如果想要了解更多java实例知识，敬请关注奇Q工具网。
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