springboot整合activiti7

1.新建spring boot项目，添加依赖

　　　　　<dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-spring-boot-starterartifactId>//acti
            <version>7.1.0.M6version>
        dependency>

        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>5.1.47version>
        dependency>

        <dependency>
            <groupId>org.activitigroupId>
            <artifactId>activiti-image-generatorartifactId>
            <version>5.22.0version>
        dependency>

2.resources下新建文件夹processes，并添加bpmn文件

3.yml配置

spring:
  activiti:
    database-schema-update: true   # 对所有表更新操作， 如不存在则创建
    db-history-used: true   # 使用历史表
    history-level: full   # 保存历史数据的最高级别
    check-process-definitions: true  # 校验流程文件 

4.增加配置类

activiti7默认集成了spring security框架，所以需要配置spring security

1和2两个类是从activiti官网的案例项目里的，这里附上链接 https://github.com/Activiti/activiti-examples

主要是配置了两个用户

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.provisioning.InMemoryUserDetailsManager;

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;

@Configuration
public class DemoApplicationConfiguration {
    private Logger logger = LoggerFactory.getLogger(DemoApplicationConfiguration.class);

    @Bean
    public UserDetailsService myUserDetailsService() {

        InMemoryUserDetailsManager inMemoryUserDetailsManager = new InMemoryUserDetailsManager();

        String[][] usersGroupsAndRoles = {
                {"system", "password", "ROLE_ACTIVITI_USER"},
                {"admin", "password", "ROLE_ACTIVITI_ADMIN"},
        };

        for (String[] user : usersGroupsAndRoles) {
            List 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();
    }

}

进行登陆的操作

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.context.SecurityContextImpl;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.stereotype.Component;

import java.util.Collection;

@Component
public class SecurityUtil {

    private Logger logger = LoggerFactory.getLogger(SecurityUtil.class);

    @Autowired
    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);
    }
}

启动类，在启动项目的时候进行登录，然后注入了一个DatasSource

@SpringBootApplication
public class ActivitiApplication implements CommandLineRunner {
    @Autowired
    private SecurityUtil securityUtil;

    public static void main(String[] args) {
        SpringApplication.run(ActivitiApplication.class, args);
    }

    @Override
    public void run(String... args) throws Exception {
        securityUtil.logInAs("system");
    }

    @Bean
    public DataSource dataSource() {
        DataSource dataSource = new DriverManagerDataSource("jdbc:mysql:///activiti?useUnicode=true&characterEncoding=utf8", "root", "root");
        return dataSource;
    }
}

5.启动项目，可以看到数据库已经创建了表

项目启动时，在processes文件夹中的流程文件会自动部署，可以查看数据库直接启动流程，接下来的操作和activiti6的操作就相同了。

 可以看到activiti7的id使用的是uuid