Activiti moduler + spring web环境构建（二）
项目结构：基于activiti 5.21版本，可下载附件demo项目
maven 配置：
<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 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.activiti.examples</groupId>
<artifactId>activiti-examples</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>BPMN 2.0 with Activiti - Examples</name>
<properties>
<activiti-version>5.21.0</activiti-version>
<spring-version>4.3.3.RELEASE</spring-version>
</properties>
<dependencies>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-engine</artifactId>
<version>${activiti-version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-modeler</artifactId>
<exclusions>
<exclusion>
<groupId>xalan</groupId>
<artifactId>xalan</artifactId>
</exclusion>
</exclusions>
<version>${activiti-version}</version>
</dependency>
<!-- 查看流程详细定义 -->
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-diagram-rest</artifactId>
<version>${activiti-version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-explorer</artifactId>
<exclusions>
<exclusion>
<artifactId>vaadin</artifactId>
<groupId>com.vaadin</groupId>
</exclusion>
<exclusion>
<artifactId>dcharts-widget</artifactId>
<groupId>org.vaadin.addons</groupId>
</exclusion>
<exclusion>
<artifactId>activiti-simple-workflow</artifactId>
<groupId>org.activiti</groupId>
</exclusion>
</exclusions>
<version>${activiti-version}</version>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring</artifactId>
<version>${activiti-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.39</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jdk14</artifactId>
<version>1.7.6</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.3.2</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<inherited>true</inherited>
<configuration>
<classpathContainers>
<classpathContainer>org.eclipse.jdt.USER_LIBRARY/Activiti Designer
Extensions</classpathContainer>
</classpathContainers>
</configuration>
</plugin>
</plugins>
</build>
</project>
web配置
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
id="WebApp_ID" version="2.5">
<distributable />
<!-- To load the Spring context -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>
<!-- 编码过滤器 放在filter的第一位最佳-->
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!--springMVC配置，该servlet会拦截所有匹配的URL请求-->
<servlet>
<servlet-name>springMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springMVC.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- Session timeout on one day -->
<session-config>
<session-timeout>480</session-timeout>
</session-config>
</web-app>
spring基础配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<context:property-placeholder location="classpath:db.properties"
file-encoding="utf-8" ignore-unresolvable="true"/>
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driver}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
<property name="defaultAutoCommit" value="false"/>
</bean>
<bean id="processEngineConfiguration"
class="org.activiti.engine.impl.cfg.StandaloneProcessEngineConfiguration">
<property name="dataSource" ref="dataSource"/>
<property name="databaseType" value="${db}"/>
<property name="databaseSchemaUpdate" value="true"/>
<property name="jobExecutorActivate" value="false"/>
<!--<property name="enableDatabaseEventLogging" value="true" />
<property name="customFormTypes">
<list>
<bean class="org.activiti.explorer.form.UserFormType"/>
<bean class="org.activiti.explorer.form.ProcessDefinitionFormType"/>
<bean class="org.activiti.explorer.form.MonthFormType"/>
</list>
</property>-->
</bean>
<bean id="processEngine" class="org.activiti.spring.ProcessEngineFactoryBean">
<property name="processEngineConfiguration" ref="processEngineConfiguration"/>
</bean>
<bean id="repositoryService" factory-bean="processEngine" factory-method="getRepositoryService"/>
<bean id="runtimeService" factory-bean="processEngine" factory-method="getRuntimeService"/>
<bean id="taskService" factory-bean="processEngine" factory-method="getTaskService"/>
<bean id="historyService" factory-bean="processEngine" factory-method="getHistoryService"/>
<bean id="managementService" factory-bean="processEngine" factory-method="getManagementService"/>
<bean id="identityService" factory-bean="processEngine" factory-method="getIdentityService" />
<bean id="formService" factory-bean="processEngine" factory-method="getFormService" />
<!-- json处理，这里不可改成其他类，有依赖关系 -->
<bean id="objectMapper" class="com.fasterxml.jackson.databind.ObjectMapper"></bean>
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"/>
</bean>
</beans>
spring MVC配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
">
<!--配置扫描controller包，注册pojo (org.activiti.rest.editor,org.activiti.rest.diagram)-->
<context:component-scan base-package="com.bpm.controller,org.activiti.rest.editor"></context:component-scan>
<!--使用注解的方式-->
<mvc:annotation-driven/>
<!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 启动Spring MVC的注解功能，完成请求和注解POJO的映射 -->
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter"/><!-- json转换器 -->
</list>
</property>
</bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
<property name="prefix" value="/WEB-INF/views/"/>
<property name="suffix" value=".jsp"></property>
</bean>
<!-- 资源访问处理器 -->
<mvc:resources mapping="/resources/**" location="/resources/" />
</beans>
基础操作
@RequestMapping(value = "/create", method = RequestMethod.POST, produces = "application/json;charset=utf-8")
public String create(HttpServletRequest request, HttpServletResponse response) {
String id = "";
try {
String name = request.getParameter("name"),
key = request.getParameter("key"),
description = request.getParameter("category");
// 元数据信息
ObjectNode modelObjectNode = objectMapper.createObjectNode();
modelObjectNode.put(ModelDataJsonConstants.MODEL_NAME, name);
modelObjectNode.put(ModelDataJsonConstants.MODEL_REVISION, 1);
modelObjectNode.put(ModelDataJsonConstants.MODEL_DESCRIPTION,
org.apache.commons.lang3.StringUtils
.defaultString(description));
Model newModel = repositoryService.newModel();
newModel.setMetaInfo(modelObjectNode.toString());
newModel.setName(name);
newModel.setKey(key);
newModel.setCategory(description);
repositoryService.saveModel(newModel);
// 创建所必须的JSON数据
ObjectNode editorNode = objectMapper.createObjectNode();
editorNode.put("id", "canvas");
editorNode.put("resourceId", "canvas");
ObjectNode stencilSetNode = objectMapper.createObjectNode();
stencilSetNode.put("namespace", "http://b3mn.org/stencilset/bpmn2.0#");
editorNode.put("stencilset", stencilSetNode);
repositoryService.addModelEditorSource(newModel.getId(), editorNode.toString().getBytes("utf-8"));
id = newModel.getId();
} catch (Exception e) {
e.printStackTrace();
}
return "redirect:/demo/editor?modelId=" + id;
}
@RequestMapping("/deploy/{modelId}")
@ResponseBody
public Result deploy(@PathVariable String modelId) throws IOException {
Result result = new Result();
try {
// 将创建的模型转为json
JsonNode editorNode = new ObjectMapper().readTree(repositoryService.getModelEditorSource(modelId));
BpmnJsonConverter jsonConverter = new BpmnJsonConverter();
BpmnModel modelCt = jsonConverter.convertToBpmnModel(editorNode);
// 获取流程模型
Model model = repositoryService.createModelQuery().modelId(modelId).singleResult();
// 发布流程模型
String processName = model.getName() + ".bpmn20.xml";
repositoryService.createDeployment().name(model.getName()).addBpmnModel(processName, modelCt).deploy();
} catch (Exception e) {
e.printStackTrace();
result.setSuccess(false);
result.setMsg(e.getMessage());
}
return result;
}
@RequestMapping("/process/start/{processDefinitionId}")
@ResponseBody
public Map<String, Object> startProcess(@PathVariable String processDefinitionId, ModelMap mav, HttpServletRequest request, HttpServletResponse response) throws IOException {
Map<String, Object> result = new HashMap<String, Object>();
result.put("success", true);
try {
Object obj = request.getSession().getAttribute("user");
// 查询是否有表单，有的话弹出表单，否则的话直接提交任务
FormDataImpl formData = (FormDataImpl) formService.getStartFormData(processDefinitionId);
List<FormProperty> propertyList = formData.getFormProperties();
result.put("hasForm", propertyList.isEmpty() ? false : true);
if (propertyList.isEmpty()) {
// 定义map用于往工作流数据库中传值。
Map variables = new HashMap();
variables.put("applyUserName", ((User) obj).getFirstName());
identityService.setAuthenticatedUserId(((User) obj).getId());
// 启动实例
runtimeService.startProcessInstanceById(processDefinitionId, variables);
}
} catch (Exception e) {
e.printStackTrace();
result.put("success", false);
result.put("msg", e.getMessage());
}
return result;
}
/**
* 获取表单用于展示
*
* @param type start 表示启动时的表单；task 表示任务中的表单
* @param id 类型为start时，为流程定义ID；类型为task时，为任务ID
* @param modelMap 返回前台数据
* @return String 页面
* @author DS
*/
@RequestMapping(value = "/process/getForm/{type}/{id}")
public String getForm(@PathVariable String type, @PathVariable String id, ModelMap modelMap) {
FormDataImpl formData = null;
if ("start".equals(type)) {
formData = (FormDataImpl) formService.getStartFormData(id);
} else if ("task".equals(type)) {
formData = (FormDataImpl) formService.getTaskFormData(id);
}
// 获取属性设置
List<FormProperty> formProperties = formData.getFormProperties();
Object values;
Map<String,Object> attributes = new HashMap<String, Object>();
for (FormProperty formProperty : formProperties) {
if("date".equals(formProperty.getType().getName()) || "enum".equals(formProperty.getType().getName())){
values = formProperty.getType().getInformation("values");
if (values != null) {
attributes.put(formProperty.getId(), values);
}else {
values = formProperty.getType().getInformation("datePattern");
if (values != null){
attributes.put(formProperty.getId(),values);
}
}
}
}
modelMap.put("attributes",attributes);
modelMap.put("formList", formProperties);
modelMap.put("type",type);
modelMap.put("id",id);
return "apply";
}
/**
* 保存表单数据
*
* @param type start 表示启动时的表单；task 表示任务中的表单
* @param id 类型为start时，为流程定义ID；类型为task时，为任务ID
* @param request 请求
* @param response 响应
* @return Result 保存结果
* @author DS
*/
@RequestMapping(value = "/process/saveForm/{type}/{id}")
@ResponseBody
public Result submitStartFormAndStartProcessInstance(@PathVariable String type, @PathVariable("id") String id,
HttpServletRequest request, HttpServletResponse response) throws IOException {
Result result = new Result();
Map<String, String> formProperties = new HashMap<String, String>();
// 从request中读取参数然后转换
Map<String, String[]> parameterMap = request.getParameterMap();
Set<String> keySet = parameterMap.keySet();
for (String key : keySet) {
formProperties.put(key, parameterMap.get(key)[0]);
}
// 用户未登录不能操作，实际应用使用权限框架实现，例如Spring Security、Shiro等
Object obj = request.getSession().getAttribute("user");
try {
if("start".equals(type)){
formProperties.put("applyUserName",((User)obj).getFirstName());
formProperties.put("applyUserId",((User)obj).getId());
identityService.setAuthenticatedUserId(((User)obj).getId());
ProcessInstance processInstance = formService.submitStartFormData(id, formProperties);
logger.debug("流程启动成功: {}", processInstance.getId());
}else if ("task".equals(type)){
formService.submitTaskFormData(id,formProperties);
logger.debug("流程进入下一步");
}
}catch (Exception e){
result.setSuccess(false);
result.setMsg(e.getMessage());
e.printStackTrace();
}finally {
identityService.setAuthenticatedUserId(null);
}
result.setResult(id);
return result;
}
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