SpringBoot怎麼整合Activiti7

1.使用idea建立springboot專案

在工程的pom.xml檔案中引入相關的依賴，具體依賴如下所示

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelversion>4.0.0</modelversion>
  <parent>
    <groupid>org.springframework.boot</groupid>
    <artifactid>spring-boot-starter-parent</artifactid>
    <version>2.2.1.release</version>
    <relativepath/> <!-- lookup parent from repository -->
  </parent>
  <groupid>com.example</groupid>
  <artifactid>activiti</artifactid>
  <version>0.0.1-snapshot</version>
  <name>activiti</name>
  <description>demo project for spring boot</description>

  <properties>
    <project.build.sourceencoding>utf-8</project.build.sourceencoding>
    <project.reporting.outputencoding>utf-8</project.reporting.outputencoding>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>
    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-jdbc</artifactid>
    </dependency>

    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-web</artifactid>
    </dependency>

    <dependency>
      <groupid>org.springframework.boot</groupid>
      <artifactid>spring-boot-starter-test</artifactid>
      <scope>test</scope>
    </dependency>

    <dependency>
      <groupid>org.activiti</groupid>
      <artifactid>activiti-spring-boot-starter</artifactid>
      <version>7.0.0.beta2</version>
    </dependency>
    <dependency>
      <groupid>org.mybatis</groupid>
      <artifactid>mybatis</artifactid>
      <version>3.4.5</version>
    </dependency>
    <dependency>
      <groupid>mysql</groupid>
      <artifactid>mysql-connector-java</artifactid>
      <version>5.1.27</version>
    </dependency>
    <dependency>
      <groupid>org.projectlombok</groupid>
      <artifactid>lombok</artifactid>
      <optional>true</optional>
    </dependency>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupid>org.springframework.boot</groupid>
        <artifactid>spring-boot-maven-plugin</artifactid>
      </plugin>
    </plugins>
  </build>

</project>

2.application.yml檔案設定

為了能夠實作activiti7產生的表放到mysql資料庫中，需要在設定檔application.yml中加入相關的設定

server:
 port: 8085
spring:
 application:
  name: spring-activiti
 datasource:
  url: jdbc:mysql://localhost:3306/activiti?useunicode=true&characterencoding=utf8&servertimezone=gmt&nullcatalogmeanscurrent=true
  username: root
  password: 123456
  driver-class-name: com.mysql.jdbc.driver
 activiti:
  #1.flase： 默认值。activiti在启动时，会对比数据库表中保存的版本，如果没有表或者版本不匹配，将抛出异常
  #2.true： activiti会对数据库中所有表进行更新操作。如果表不存在，则自动创建
  #3.create_drop： 在activiti启动时创建表，在关闭时删除表（必须手动关闭引擎，才能删除表）
  #4.drop-create： 在activiti启动时删除原来的旧表，然后在创建新表（不需要手动关闭引擎）
  database-schema-update: true
  #检测历史表是否存在
  db-history-used: true
  #记录历史等级 可配置的历史级别有none, activity, audit, full
  history-level: full
  #校验流程文件，默认校验resources下的processes文件夹里的流程文件
  check-process-definitions: false

3.新增springsecurity安全框架整合設定

activiti7與springboot整合後，預設情況下，整合了springsecurity安全框架，這樣我們就要去準備springsecurity整合進來的相關使用者權限配置資訊

1）加入securityutil類別

為了能夠快速實作springsecurity安全框架的配置，所新增的一個元件。

@component
public class securityutil {

  private logger logger = loggerfactory.getlogger(securityutil.class);

  @autowired
  @qualifier("myuserdetailsservice")
  private userdetailsservice userdetailsservice;

  public void loginas(string username) {

    userdetails user = userdetailsservice.loaduserbyusername(username);
    if (user == null) {
      throw new illegalstateexception("user " + username + " doesn't exist, please provide a valid user");
    }
    logger.info("> logged in as: " + username);
    securitycontextholder.setcontext(new securitycontextimpl(new authentication() {
      @override
      public collection<? extends grantedauthority> getauthorities() {
        return user.getauthorities();
      }

      @override
      public object getcredentials() {
        return user.getpassword();
      }

      @override
      public object getdetails() {
        return user;
      }

      @override
      public object getprincipal() {
        return user;
      }

      @override
      public boolean isauthenticated() {
        return true;
      }

      @override
      public void setauthenticated(boolean isauthenticated) throws illegalargumentexception {

      }

      @override
      public string getname() {
        return user.getusername();
      }
    }));
    org.activiti.engine.impl.identity.authentication.setauthenticateduserid(username);
  }
}

這個類別可以從activiti7官方提供的example中找到。

2）新增demoapplicationconfig類別

它的作用是為了實作springsecurity框架的使用者權限的配置，這樣我們就可以在系統中使用使用者權限資訊

@configuration
public class demoapplicationconfiguration {

  private logger logger = loggerfactory.getlogger(demoapplicationconfiguration.class);

  @bean
  public userdetailsservice myuserdetailsservice() {

    inmemoryuserdetailsmanager inmemoryuserdetailsmanager = new inmemoryuserdetailsmanager();

    string[][] usersgroupsandroles = {
        {"salaboy", "password", "role_activiti_user", "group_activititeam"},
        {"ryandawsonuk", "password", "role_activiti_user", "group_activititeam"},
        {"erdemedeiros", "password", "role_activiti_user", "group_activititeam"},
        {"other", "password", "role_activiti_user", "group_otherteam"},
        {"system", "password", "role_activiti_user"},
        {"admin", "password", "role_activiti_admin"},
    };

    for (string[] user : usersgroupsandroles) {
      list<string> authoritiesstrings = arrays.aslist(arrays.copyofrange(user, 2, user.length));
      logger.info("> registering new user: " + user[0] + " with the following authorities[" + authoritiesstrings + "]");
      inmemoryuserdetailsmanager.createuser(new user(user[0], passwordencoder().encode(user[1]),
          authoritiesstrings.stream().map(s -> new simplegrantedauthority(s)).collect(collectors.tolist())));
    }


    return inmemoryuserdetailsmanager;
  }


  @bean
  public passwordencoder passwordencoder() {
    return new bcryptpasswordencoder();
  }

}

4）建立測試類別

@springboottest
@slf4j
class activitiapplicationtests {

  @autowired
  private processengine processengine;

  /**
   * 流程定义的部署
   */
  @test
  public void createdeploy() { 
    repositoryservice repositoryservice = processengine.getrepositoryservice();

    deployment deployment = repositoryservice.createdeployment()
        .addclasspathresource("diagram/holiday.bpmn")//添加bpmn资源
        .addclasspathresource("diagram/holiday.png")
        .name("请假申请单流程")
        .deploy(); 
        
    log.info("流程部署id:" + deployment.getname());
    log.info("流程部署名称:" + deployment.getid());
  }
}

執行結果：

遇到的問題：

1）歷史表預設不會生成，需要在application.yml中配置

spring:
 activiti:
  #检测历史表是否存在
  db-history-used: true
  #记录历史等级 可配置的历史级别有none, activity, audit, full
  history-level: full

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