工作流Activiti的前置准备工作。

1. 安装jdk1.6 以上。

2. Eclipse3.6以上

3. eclipse 安装插件：  install new software --> add 

网络地址：http://activiti.org/designer/update/

安装2次，第一次安装插件依赖包，重启eclipe后，再安装一次，可以安装成功，安装成功后

新建里有activiti的选项如下

另外，在perfence里面

设置

新建项目，maven

配置pom.xml

<properties>

<spring.version>4.3.17.RELEASE</spring.version>

<mysql.version>5.1.39</mysql.version>

<activiti.version>5.22.0</activiti.version>

<mybats.version>3.4.6</mybatis.version>

</properties>

<!-- https://mvnrepository.com/artifact/org.activiti/activiti-engine -->
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-engine</artifactId>
<version>5.22.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/org.activiti/activiti-spring -->

<!--SSM集成时，要用-->
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring</artifactId>
<version>5.22.0</version>
</dependency>

还需要以下jar的坐标

spring-aspects

spring-aop

spring-context

spring-core

spring-expression

spring-jdbc

spring-tx

spring-beans

需要mybatis

mybatis

<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.4.6</version>
</dependency>

需要slf4j

slf4j-api

slf4j-simple

log4j

####################

另外在pom最后，配置一个build

<build>

　　<plugins>

　　　　<plugin>

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

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

   　　　　　　<version>3.7.0</version>

　　　　　　<configuration>

　　　　　　　　<source>1.8</source>

　　　　　　　　<target>1.8</target>

　　　　　　</configuration>　

</plugin>

</plugins>

</build>

#####################################################

初始化数据库

新建一个数据库activitiDB

创建类去初始化表

新建一个测试类

代码如下

@Test
    public void createDB() {
        
        ProcessEngineConfiguration peconfig = ProcessEngineConfiguration.createStandaloneProcessEngineConfiguration();
        peconfig.setJdbcUrl("jdbc:mysql://localhost:3306/activitidb");
        peconfig.setJdbcDriver("com.mysql.jdbc.Driver");
        peconfig.setJdbcUsername("root");
        peconfig.setJdbcPassword("123456");
    
        // 配置实例化的方式：drop-create,true
        peconfig.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
        
        //得到流程引擎
        ProcessEngine buildProcessEngine = peconfig.buildProcessEngine();
    }

pom.xml 文件如下

<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>cn.taotao</groupId>
    <artifactId>avtivitiDemo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>avtivitiDemo</name>
    <url>http://maven.apache.org</url>

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

    <dependencies>
        <!-- https://mvnrepository.com/artifact/junit/junit -->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>test</scope>
        </dependency>


        <!-- https://mvnrepository.com/artifact/org.activiti/activiti-engine -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-engine</artifactId>
            <version>5.22.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.activiti/activiti-spring -->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring</artifactId>
            <version>5.22.0</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-core -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-expression -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-expression</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
            <version>4.3.18.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.6</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>1.7.25</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-simple -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-simple</artifactId>
            <version>1.7.25</version>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.48</version>
        </dependency>

    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.7.0</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

//DriverManagerDataSource datasource = new  DriverManagerDataSource();
//datasource.setDriverClassName("com.mysql.jdbc.Driver");
//datasource.setUrl("jdbc:mysql://localhost:3306/activitidb");
//datasource.setUsername("root");
//datasource.setPassword("123456");
//peconfig.setDataSource(datasource)  ;    

上面的也可写成数据源的方式。

另外两种形式

activiti.cfg.xml

位置在/src/main/resource/ 下，需要加入build path的source中

文件如下

<?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:context="http://www.springframework.org/schema/context"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <bean id="processEngineConfiguration"
        class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
        <property name="jdbcDriver" value="com.mysql.jdbc.Driver"></property>
        <property name="jdbcUrl"
            value="jdbc:mysql://localhost:3306/activitidb"></property>
        <property name="jdbcUsername" value="root"></property>
        <property name="jdbcPassword" value="123456"></property>
        <property name="databaseSchemaUpdate" value="true"></property>
    </bean>
</beans>

代码如下

两种方法写一块了

    @Test
    public void createDb2() {
        ProcessEngineConfiguration config = ProcessEngineConfiguration.createProcessEngineConfigurationFromResource("activiti.cfg.xml");
         config.buildProcessEngine();
    }
    
    @Test
    public void createDB3() {
        ProcessEngine engine = ProcessEngines.getDefaultProcessEngine();
    }

第二种方式，是系统默认去找activiti.cfg.xml 文件，然后直接构建了。