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在前面的介绍中,虽然实现了绘制流程图,然后将流程图存储到数据库中,然后从数据库中获取流程信息,并部署和启动流程,但是部署的流程绘制器是在tomcat中部署的,可能在部分的项目中,需要我们将流程设计器,设置到自己的项目中,这样部署项目就相当于部署了流程设计器,下面对SpringBoot项目集成flowable流程设计器进行简单介绍。
在前面部署flowable-ui后可以看到,ui界面分为了任务应用程序、建模器应用程序、管理员应用程序和身份管理应用程序。
在这几个应用中,最重要的就是建模器应用程序(flowable-modeler),它主要是用来绘制流程图和流程定义信息,因此,在这里我们是在项目中集成了建模器应用程序,实现在自己的项目中使用flowable-ui官方的建模器具绘制流程图,并将其保存到mysql数据库中。
环境:flowable版本:6.7.2 MySQL版本:5.7
在这里下载对应版本的flowable-ui的源码。
Release Flowable 6.7.2 release · flowable/flowable-engine · GitHub
6.7.2版本的源码:
flowable-engine-flowable-6.7.2.zip
由于是 spring-boot 项目,因此直接选择 flowable-spring-boot-starter,里面提供了齐全的 REST API
- <!--Flowable的核心依赖-->
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-spring-boot-starter-process</artifactId>
- <version>${flowable.version}</version>
- </dependency>
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-spring-boot-starter</artifactId>
- <version>${flowable.version}</version>
- </dependency>
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-json-converter</artifactId>
- <version>${flowable.version}</version>
- </dependency>
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-bpmn-layout</artifactId>
- <version>${flowable.version}</version>
- </dependency>
添加yml配置:
- # flowable config
- flowable:
- # 关闭定时任务JOB
- async-executor-activate: true
- # 将databaseSchemaUpdate设置为true。当Flowable发现库与数据库表结构不一致时,会自动将数据库表结构升级至新版本。
- database-schema-update: true
- check-process-definitions: false
- db-history-used: true
- history-level: full
日志配置:
注意:Flowable 使用 SLF4J 作为内部日志框架,所以我们使用 log4j 作为 SLF4J 的实现
添加依赖:
- <!--日志-->
- <dependency>
- <groupId>org.slf4j</groupId>
- <artifactId>slf4j-api</artifactId>
- <version>1.7.21</version>
- </dependency>
- <dependency>
- <groupId>org.slf4j</groupId>
- <artifactId>slf4j-log4j12</artifactId>
- <version>1.7.21</version>
- </dependency>
resource 目录下新建文件 log4j.properties
- log4j.rootLogger=DEBUG, CA
-
- log4j.appender.CA=org.apache.log4j.ConsoleAppender
- log4j.appender.CA.layout=org.apache.log4j.PatternLayout
- log4j.appender.CA.layout.ConversionPattern= %d{hh:mm:ss,SSS} [%t] %-5p %c %x - %m%n
这里为了方便我们开发,将官方的flowable-modeler前端项目直接集成到了后端中。
从刚刚下载的源码中获取flowable-modeler的statci文件,6.7.2版本的目录在:
flowable-engine-flowable-6.7.2\modules\flowable-ui\flowable-ui-modeler-frontend\src\main\resources
复制包中 resources\static 下所有前端代码文件,复制到我们自己的项目static 文件夹下,项目没有static就在resource目录下新建static文件夹。
添加依赖:
- <!--通过下方的配置,加上官方源码中的静态文件,就可以将建模器应用程序集成到项目中-->
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-ui-modeler-rest</artifactId>
- <version>${flowable.version}</version>
- <exclusions>
- <exclusion>
- <groupId>org.mybatis</groupId>
- <artifactId>mybatis</artifactId>
- </exclusion>
- </exclusions>
- </dependency>
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-ui-modeler-conf</artifactId>
- <version>${flowable.version}</version>
- </dependency>
- <dependency>
- <groupId>org.flowable</groupId>
- <artifactId>flowable-ui-modeler-logic</artifactId>
- <version>${flowable.version}</version>
- </dependency>
-
- <dependency>
- <groupId>org.liquibase</groupId>
- <artifactId>liquibase-core</artifactId>
- <version>4.4.0</version>
- </dependency>
配置文件:
在新版本的flowable-modeler中,需要配置idm,身份认证的相关配置,因此,在配置文件中添加:
- # flowable config
- flowable:
- # 关闭定时任务JOB
- async-executor-activate: true
- # 将databaseSchemaUpdate设置为true。当Flowable发现库与数据库表结构不一致时,会自动将数据库表结构升级至新版本。
- database-schema-update: true
- check-process-definitions: false
- db-history-used: true
- history-level: full
- common:
- app:
- idm-url: http://localhost:8099/flowable-idm
- idm-admin:
- user: admin
- password: admin
自定义配置类:
DatabaseAutoConfiguration.java
Flowable 是基于 liquibase 进行数据库自动管理与追踪的,因此需要加一个 liquibase 的配置类(可以把org.flowable.ui.modeler.conf.DatabaseConfiguration下的复制下来改一改)
- import liquibase.Liquibase;
- import liquibase.database.Database;
- import liquibase.database.DatabaseConnection;
- import liquibase.database.DatabaseFactory;
- import liquibase.database.jvm.JdbcConnection;
- import liquibase.exception.DatabaseException;
- import liquibase.resource.ClassLoaderResourceAccessor;
- import org.flowable.ui.common.service.exception.InternalServerErrorException;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Configuration;
- import javax.sql.DataSource;
-
- @Configuration
- public class DatabaseAutoConfiguration {
-
- private static final Logger LOGGER = LoggerFactory.getLogger(DatabaseAutoConfiguration.class);
-
- protected static final String LIQUIBASE_CHANGELOG_PREFIX = "ACT_DE_";
-
- @Bean
- public Liquibase liquibase(DataSource dataSource) {
- LOGGER.info("Configuring Liquibase");
- Liquibase liquibase = null;
- try {
- DatabaseConnection connection = new JdbcConnection(dataSource.getConnection());
- Database database = DatabaseFactory.getInstance().findCorrectDatabaseImplementation(connection);
- database.setDatabaseChangeLogTableName(LIQUIBASE_CHANGELOG_PREFIX + database.getDatabaseChangeLogTableName());
- database.setDatabaseChangeLogLockTableName(LIQUIBASE_CHANGELOG_PREFIX + database.getDatabaseChangeLogLockTableName());
-
- liquibase = new Liquibase("META-INF/liquibase/flowable-modeler-app-db-changelog.xml", new ClassLoaderResourceAccessor(), database);
- liquibase.update("flowable");
- return liquibase;
- } catch (Exception e) {
- throw new InternalServerErrorException("Error creating liquibase database", e);
- } finally {
- closeDatabase(liquibase);
- }
- }
-
- private void closeDatabase(Liquibase liquibase) {
- if (liquibase != null) {
- Database database = liquibase.getDatabase();
- if (database != null) {
- try {
- database.close();
- } catch (DatabaseException e) {
- LOGGER.warn("Error closing database", e);
- }
- }
- }
- }
- }
之后还需要添加mybatis-plus的相关配置:需要配置扫描 classpath:/META-INF/modeler-mybatis-mappings/*.xml
- mybatis-plus:
- mapper-locations: classpath:/mapper/*Mapper.xml, classpath:/META-INF/modeler-mybatis-mappings/*.xml
- configuration:
- map-underscore-to-camel-case: true
- jdbc-type-for-null: null
- # 参数配置
- configuration-properties:
- # 配置流程引擎参数,详情可见 DatabaseConfiguration
- blobType: BLOB
- boolValue: TRUE
- # 不要设置库名,否则会出现双库名 bug
- prefix: ''
汉化配置:
StencilSetResource.java
在源码中找到这俩文件:
在resource下新建stencilset文件夹,将源码中的两个汉化文件放入该文件夹中。
添加类配置,在这里新建类的时候,名称不能为StencilSetResource,会与官方的jar包中的bean冲突,因此,我们新建FlowableStencilSetResource.java。
- import com.fasterxml.jackson.databind.JsonNode;
- import com.fasterxml.jackson.databind.ObjectMapper;
- import org.flowable.ui.common.service.exception.InternalServerErrorException;
- import org.slf4j.Logger;
- import org.slf4j.LoggerFactory;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.web.bind.annotation.RequestMapping;
- import org.springframework.web.bind.annotation.RequestMethod;
- import org.springframework.web.bind.annotation.RestController;
-
- /**
- * 汉化 配置
- */
- @RestController
- @RequestMapping("/app")
- public class FlowableStencilSetResource {
-
- private static final Logger LOGGER = LoggerFactory.getLogger(FlowableStencilSetResource.class);
-
- @Autowired
- protected ObjectMapper objectMapper;
-
- @RequestMapping(value = "/rest/stencil-sets/editor", method = RequestMethod.GET, produces = "application/json")
- public JsonNode getStencilSetForEditor() {
- try {
- JsonNode stencilNode = objectMapper.readTree(this.getClass().getClassLoader().getResourceAsStream("stencilset/stencilset_bpmn.json"));
- return stencilNode;
- } catch (Exception e) {
- LOGGER.error("Error reading bpmn stencil set json", e);
- throw new InternalServerErrorException("Error reading bpmn stencil set json");
- }
- }
-
- @RequestMapping(value = "/rest/stencil-sets/cmmneditor", method = RequestMethod.GET, produces = "application/json")
- public JsonNode getCmmnStencilSetForEditor() {
- try {
- JsonNode stencilNode = objectMapper.readTree(this.getClass().getClassLoader().getResourceAsStream("stencilset/stencilset_cmmn.json"));
- return stencilNode;
- } catch (Exception e) {
- LOGGER.error("Error reading bpmn stencil set json", e);
- throw new InternalServerErrorException("Error reading bpmn stencil set json");
- }
- }
- }
SecurityUtils配置
注意因为源码中引用了这个类,因此我们在配置的时候,路径需要与源码中的路径保持一致,也就是:org.flowable.ui.common.security 这样在 Jar 中的方法在调用时会覆盖原 Jar 里的工具类
下方的类为6.7.2版本的配置,如果是低版本的配置,可能不同,在旧版本中,flowable使用了FlowableAppUser,但是在新版本的依赖中,转而是:SecurityScope,因此这个配置需要根据自己的flowable版本配置。
- import java.util.ArrayList;
- import java.util.List;
- import org.flowable.common.engine.api.FlowableIllegalStateException;
- import org.flowable.idm.api.User;
- import org.flowable.ui.common.model.RemoteUser;
- import org.springframework.security.core.Authentication;
- import org.springframework.security.core.context.SecurityContext;
- import org.springframework.security.core.context.SecurityContextHolder;
-
- /**
- * 重构流程编辑器获取用户信息
- */
- public class SecurityUtils {
-
- private static User assumeUser;
-
- private static SecurityScopeProvider securityScopeProvider = new FlowableSecurityScopeProvider();
-
- private SecurityUtils() {
- }
-
- /**
- * Get the login of the current user.
- */
- public static String getCurrentUserId() {
- User user = getCurrentUserObject();
- if (user != null) {
- return user.getId();
- }
- return null;
- }
-
- /**
- * @return the {@link User} object associated with the current logged in user.
- */
- public static User getCurrentUserObject() {
- if (assumeUser != null) {
- return assumeUser;
- }
-
- RemoteUser user = new RemoteUser();
- user.setId("admin");
- user.setDisplayName("admin");
- user.setFirstName("admin");
- user.setLastName("admin");
- user.setEmail("admin@flowable.com");
- user.setPassword("123456");
- List<String> pris = new ArrayList<>();
- pris.add(DefaultPrivileges.ACCESS_MODELER);
- pris.add(DefaultPrivileges.ACCESS_IDM);
- pris.add(DefaultPrivileges.ACCESS_ADMIN);
- pris.add(DefaultPrivileges.ACCESS_TASK);
- pris.add(DefaultPrivileges.ACCESS_REST_API);
- user.setPrivileges(pris);
- return user;
- }
-
- public static void setSecurityScopeProvider(SecurityScopeProvider securityScopeProvider) {
- SecurityUtils.securityScopeProvider = securityScopeProvider;
- }
-
- public static SecurityScope getCurrentSecurityScope() {
- SecurityContext securityContext = SecurityContextHolder.getContext();
- if (securityContext != null && securityContext.getAuthentication() != null) {
- return getSecurityScope(securityContext.getAuthentication());
- }
- return null;
- }
-
- public static SecurityScope getSecurityScope(Authentication authentication) {
- return securityScopeProvider.getSecurityScope(authentication);
- }
-
- public static SecurityScope getAuthenticatedSecurityScope() {
- SecurityScope currentSecurityScope = getCurrentSecurityScope();
- if (currentSecurityScope != null) {
- return currentSecurityScope;
- }
- throw new FlowableIllegalStateException("User is not authenticated");
- }
-
- public static void assumeUser(User user) {
- assumeUser = user;
- }
-
- public static void clearAssumeUser() {
- assumeUser = null;
- }
- }
认证请求配置
前端 url-config.js 修改
路径:resource\static\scripts\configuration\url-conf.js
将 getAccountUrl 的路径改为上面自己的 getAccount 接口的路径,我们让他使用我们自己的认证
后端添加Controller
添加一个登录认证的FlowModelerController
-
- /**
- * flowable-modeler获取默认的管理员信息
- *
- * @Author: yichangqiao
- * @Date: 2024/4/19 16:11
- */
- @Slf4j
- @RestController
- public class FlowModelerController {
-
- /**
- * 获取默认的管理员信息
- * @return
- */
- @RequestMapping(value = "/flow/rest/account", method = RequestMethod.GET, produces = "application/json")
- public UserRepresentation getAccount() {
- UserRepresentation userRepresentation = new UserRepresentation();
- userRepresentation.setId("admin");
- userRepresentation.setEmail("admin@flowable.org");
- userRepresentation.setFullName("Administrator");
- userRepresentation.setLastName("Administrator");
- userRepresentation.setFirstName("Administrator");
- List<String> privileges = new ArrayList<>();
- privileges.add(DefaultPrivileges.ACCESS_MODELER);
- privileges.add(DefaultPrivileges.ACCESS_IDM);
- privileges.add(DefaultPrivileges.ACCESS_ADMIN);
- privileges.add(DefaultPrivileges.ACCESS_TASK);
- privileges.add(DefaultPrivileges.ACCESS_REST_API);
- userRepresentation.setPrivileges(privileges);
- log.info("login init success ..... ");
- return userRepresentation;
- }
- }
mybatis-plus配置
因为flowable自己使用了一个sqlsessionfactory创建SQL会话,但是我们自己的项目中又需要使用mybatis-plus的sqlsessionfactory,在mybatis-plus加载sqlsessionfactory默认是单例的,因此我们需要配置默认的回话连接:
- import com.baomidou.mybatisplus.annotation.DbType;
- import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
- import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
- import org.mybatis.spring.annotation.MapperScan;
- import org.springframework.context.annotation.Bean;
- import org.springframework.context.annotation.Configuration;
-
- @Configuration
- @MapperScan(basePackages = {"com.flowable.mapper"},
- sqlSessionFactoryRef = "sqlSessionFactory",
- sqlSessionTemplateRef = "sqlSessionTemplate")
- public class MybatisPlusConfig {
- @Bean
- public MybatisPlusInterceptor mybatisPlusInterceptor() {
- MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
- interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
- return interceptor;
- }
- }
配置security
这里我们需要跳过flowable的权限校验,而是使用我们自己的认证框架,因此,需要在项目中配置:
- import org.flowable.ui.common.security.SecurityConstants;
- import org.springframework.context.annotation.Configuration;
- import org.springframework.core.annotation.Order;
- import org.springframework.security.config.annotation.web.builders.HttpSecurity;
- import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
-
- @Configuration
- public class SecurityConfiguration {
-
- @Configuration(proxyBeanMethods = false)//所以这个地方-1让该配置项在FlowableUiSecurityAutoConfiguration中对应配置项前加载,以跳过授权
- @Order(SecurityConstants.FORM_LOGIN_SECURITY_ORDER - 1)
- public static class FormLoginWebSecurityConfigurerAdapter extends WebSecurityConfigurerAdapter {
- @Override
- protected void configure(HttpSecurity http) throws Exception {
- http
- //必须要将csrf设置为disable,不然后面发送POST请求时会报403错误
- .csrf().disable()
- //为了简单起见,简单粗暴方式直接放行modeler下面所有请求
- .authorizeRequests().antMatchers("/**").permitAll();
- }
- }
-
- }
修改Application启动类配置
让spring加载我们自定义的配置bean:FlowableStencilSetResource.class、DatabaseAutoConfiguration.class
- import com.yichangqiao.flowable.config.DatabaseAutoConfiguration;
- import com.yichangqiao.flowable.config.FlowableStencilSetResource;
- import lombok.extern.slf4j.Slf4j;
- import org.flowable.ui.common.security.ApiHttpSecurityCustomizer;
- import org.flowable.ui.common.security.FlowableUiSecurityAutoConfiguration;
- import org.mybatis.spring.annotation.MapperScan;
- import org.springframework.boot.SpringApplication;
- import org.springframework.boot.autoconfigure.SpringBootApplication;
- import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
- import org.springframework.context.annotation.ComponentScan;
- import org.springframework.context.annotation.Import;
- import java.time.LocalDateTime;
-
- @Slf4j
- //启用全局异常拦截器
- @Import(value = {
- FlowableStencilSetResource.class,
- // 引入 DatabaseConfiguration 表更新转换,
- DatabaseAutoConfiguration.class
- })
- @ComponentScan(basePackages = {"com.flowable.*"})
- @SpringBootApplication(exclude = {SecurityAutoConfiguration.class})
- public class MasterYiFlowableApplication {
-
- public static void main(String[] args) {
- SpringApplication.run(MasterYiFlowableApplication.class, args);
- log.info("flowable模块加载成功 ================> {}", LocalDateTime.now());
- }
-
- }
启动项目
启动项目后,访问项目地址:127.0.0.1:端口,就可以访问到我们本地项目中的flowable-modeler了。
实际整合过程中,可能存在版本、环境、依赖等影响,导致出现报错,但是大体的思路如上,可以参考整合。
下一节:flowable-整合系统角色人员 Flowable-整合系统角色人员-CSDN博客
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