一、项目场景：
提示：使用版本6.7.0
公司使用前后端项目分离，前端使用bpmn插件生成bpmn xml文件，后端解析处理数据。今天主要介绍后端集成flowable设计器的过程中遇到的问题。
如需了解flowable框架集成请参考文档
Flowable BPMN 用户手册 (v 6.3.0)
二、集成过程
提示：项目中遇到的问题：
为什么需要自己集成Flowable设计器？因为SpringBoot提供的依赖只集成Flowable引擎模块，没有集成modeler模块。SpringBoot集成Flowable需要导入如下依赖：
org.flowable flowable-spring-boot-starter-process ${flowable.version} 
可以看到没有集成和modeler相关的依赖，如下是flowable源码中提供的流程设计器模块：
flowable-ui-modeler-conf: 放置一些列的配置项
flowable-ui-modeler-frontend: 前端
flowable-ui-modeler-logic: 放置Service以及dao层
flowable-ui-modeler-rest: 放置Controller层
因为只需要集成flowable操作model 接口相关组件，所以只需要集成logic模块即可,添加依赖如下：
org.flowable flowable-ui-modeler-logic ${flowable.version} 三、问题总结：
提示：这里填写问题的分析：
1、程序启动报错（flowable.common.app.idm-url must be set）
`Failed to instantiate [org.flowable.ui.common.service.idm.RemoteIdmService]: Factory method 'remoteIdmService' threw exception; nested exception is java.lang.IllegalArgumentException: `flowable.common.app.idm-url` must be set`这个是由于flowable调用自己的用户权限导致的，如果把flowable集成自己的框架里面，就不需要用它自带的用户体现和权限了。
解决方案：将FlowableUiSecurityAutoConfiguration排除
@SpringBootApplication(exclude = {FlowableUiSecurityAutoConfiguration.class})2、引入modelService报红，运行报错
Field modelService in com.nmb.zx.base.sys.flow.service.FlowModelInfoService required a bean of type 'org.flowable.ui.modeler.serviceapi.ModelService' that could not be found.解决方案：参考flowable flowable-ui-modeler-conf组件中的源码中的配置类扫描我们需要的注入的类所在的包即可：
添加ModelerBeanConfig.java配置类到项目任意位置：
import org.flowable.ui.common.properties.FlowableCommonAppProperties;import org.flowable.ui.modeler.repository.ModelRepositoryImpl;import org.flowable.ui.modeler.service.FlowableModelQueryService;import org.flowable.ui.modeler.service.ModelImageService;import org.flowable.ui.modeler.service.ModelServiceImpl;import org.flowable.ui.modeler.serviceapi.ModelService;import org.springframework.boot.context.properties.EnableConfigurationProperties;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;import org.springframework.context.annotation.FilterType;@Configuration@ComponentScan(value = {// "org.flowable.ui.modeler.conf", //不引入 conf "org.flowable.ui.modeler.repository", "org.flowable.ui.modeler.service",// "org.flowable.ui.modeler.security",//授权方面的都不需要// "org.flowable.ui.common.conf", // flowable 开发环境内置的数据库连接// "org.flowable.ui.common.filter",// IDM 方面的过滤器// "org.flowable.ui.common.service", "org.flowable.ui.common.repository",// "org.flowable.ui.common.security",//授权方面的都不需要// "org.flowable.ui.common.tenant"}, excludeFilters = { @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = ModelRepositoryImpl.class)})@EnableConfigurationProperties({FlowableCommonAppProperties.class})public class ModelerBeanConfig { @Bean public ModelService createModelService() { return new ModelServiceImpl(); } @Bean public ModelImageService createModelImageService() { return new ModelImageService(); } @Bean public FlowableModelQueryService createFlowableModelQueryService() { return new FlowableModelQueryService(); }}mybatisPlus中添加配置
添加BPMN配置文件FlowBpmnConfig
import com.fasterxml.jackson.databind.ObjectMapper;import com.nmb.zx.base.core.config.flow.customcache.CustomDeploymentCache;import com.nmb.zx.base.core.config.flow.customcache.CustomProcessDefinitionInfoCache;import org.apache.ibatis.session.SqlSessionFactory;import org.flowable.bpmn.converter.BpmnXMLConverter;import org.flowable.spring.SpringProcessEngineConfiguration;import org.flowable.spring.boot.EngineConfigurationConfigurer;import org.flowable.validation.ProcessValidatorFactory;import org.mybatis.spring.SqlSessionTemplate;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;@Configurationpublic class FlowBpmnConfig implements EngineConfigurationConfigurer { @Autowired private CustomDeploymentCache customDeploymentCache; @Autowired private CustomProcessDefinitionInfoCache customProcessDefinitionInfoCache; @Override public void configure(SpringProcessEngineConfiguration configuration) { configuration.setEnableProcessDefinitionInfoCache(true); configuration.setProcessDefinitionCache(customDeploymentCache); configuration.setProcessDefinitionInfoCache(customProcessDefinitionInfoCache); //设置自定义的uuid生成策略 configuration.setIdGenerator(uuidGenerator()); } @Bean public ProcessValidatorFactory processValidator(){ return new ProcessValidatorFactory(); } @Bean public ObjectMapper objectMapper() { return new ObjectMapper(); } @Bean public UuidGenerator uuidGenerator() { return new UuidGenerator(); } @Bean public BpmnXMLConverter createBpmnXMLConverter() { return new BpmnXMLConverter(); } @Bean public static PropertySourcesPlaceholderConfigurer placeholderConfigurer() { PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer(); configurer.setIgnoreUnresolvablePlaceholders(true); return configurer; } @Bean(destroyMethod = "clearCache") @Qualifier("flowableModeler") public SqlSessionTemplate modelerSqlSessionTemplate(SqlSessionFactory sqlSessionFactory) { return new SqlSessionTemplate(sqlSessionFactory); }} import org.flowable.common.engine.impl.persistence.StrongUuidGenerator;public class UuidGenerator extends StrongUuidGenerator { @Override public String getNextId() { String uuid = super.getNextId(); uuid = uuid.replaceAll("-", ""); return uuid; }}import org.flowable.common.engine.impl.persistence.deploy.DeploymentCache;import org.flowable.engine.impl.persistence.deploy.ProcessDefinitionCacheEntry;import org.flowable.engine.repository.ProcessDefinition;import org.springframework.stereotype.Component;import java.util.ArrayList;import java.util.Collection;import java.util.Collections;@Componentpublic class CustomDeploymentCache implements DeploymentCache { protected String id; protected ProcessDefinitionCacheEntry entry; @Override public ProcessDefinitionCacheEntry get(String id) { if (id.equals(this.id)) { return entry; } return null; } @Override public void add(String id, ProcessDefinitionCacheEntry object) { this.id = id; this.entry = object; } @Override public void remove(String id) { if (id.equals(this.id)) { this.id = null; this.entry = null; } } @Override public void clear() { this.id = null; this.entry = null; } @Override public boolean contains(String id) { return id.equals(this.id); } @Override public Collection getAll() { if (entry != null) { return Collections.singletonList(entry); } else { return new ArrayList<>(); } } @Override public int size() { if (entry != null) { return 1; } else { return 0; } } // For testing purposes only public ProcessDefinition getCachedProcessDefinition() { if (entry == null) { return null; } return entry.getProcessDefinition(); }} import org.flowable.common.engine.impl.persistence.deploy.DeploymentCache;import org.flowable.engine.impl.persistence.deploy.ProcessDefinitionInfoCacheObject;import org.springframework.stereotype.Component;import java.util.Collection;import java.util.Map;import java.util.concurrent.ConcurrentHashMap;@Componentpublic class CustomProcessDefinitionInfoCache implements DeploymentCache { private final Map cache = new ConcurrentHashMap<>(); @Override public ProcessDefinitionInfoCacheObject get(String id) { return cache.get(id); } @Override public boolean contains(String id) { return cache.containsKey(id); } @Override public void add(String id, ProcessDefinitionInfoCacheObject object) { cache.put(id, object); } @Override public void remove(String id) { cache.remove(id); } @Override public void clear() { cache.clear(); } @Override public Collection getAll() { return cache.values(); } @Override public int size(){ return cache.size(); }} 3、启动后访问接口直接重定向到登录页面
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.EnableWebSecurity;import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;import org.springframework.security.web.authentication.SavedRequestAwareAuthenticationSuccessHandler;@Configuration(proxyBeanMethods = false)@EnableWebSecuritypublic class ModelerSecurityConfiguration { @Configuration @Order(SecurityConstants.MODELER_API_SECURITY_ORDER) public static class ModelerApiWebSecurityConfigurationAdapter extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { SavedRequestAwareAuthenticationSuccessHandler successHandler = new SavedRequestAwareAuthenticationSuccessHandler(); successHandler.setTargetUrlParameter("redirectTo"); http.headers().frameOptions().disable(); http.csrf().disable().authorizeRequests().antMatchers("**").permitAll().anyRequest().authenticated().and().httpBasic(); } }}4、运行成功请求接口
找不到act_de_model表，因为flowable将act_re_model改成了act_de_model表了，所以需要手动添加配置类生产act_de_model表：
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.LoggerFactory;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import javax.sql.DataSource;@Configurationpublic class DatabaseConfiguration { private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(DatabaseConfiguration.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); } } } }}来源地址：https://blog.csdn.net/weixin_37304961/article/details/129255799
