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SpringBoot整合Activiti7的实现代码

来源:建站教学网  时间:2019-12-16 10:51:14

Activiti7发布正式版之后,它与SpringBoot2.x已经完全支持整合开发。我们可以将Activiti7与SpringBoot整合开发的坐标引入到工程中,从而达到SpringBoot支持Activti7整合。

1.使用IDEA创建SpringBoot项目

在工程的pom.xml文件中引入相关的依赖,具体依赖如下所示

<?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文件配置

为了能够实现Activiti7生成的表放到Mysql数据库中,需要在配置文件application.yml中添加相关的配置

server: port: 8085spring: 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.添加SpringSecurity安全框架整合配置

Activiti7与SpringBoot整合后,默认情况下,集成了SpringSecurity安全框架,这样我们就要去准备SpringSecurity整合进来的相关用户权限配置信息

1)添加SecurityUtil类

为了能够快速实现SpringSecurity安全框架的配置,所添加的一个组件。

@Componentpublic 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);  }}

这个类可以从Activiti7官方提供的Example中找到。

2)添加DemoApplicationConfig类

它的作用是为了实现SpringSecurity框架的用户权限的配置,这样我们就可以在系统中使用用户权限信息

@Configurationpublic 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)创建测试类

@SpringBootTest@Slf4jclass 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());  }}

运行结果:

遇到的问题:

1)历史表默认不会生成,需在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

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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