Activiti7 与 Spring Boot 及 Spring Security 整合 踩坑记录
1. 前言
实话实说，网上关于Activiti的教程千篇一律，有参考价值的不多。很多都是老早以前写的，基本都是直接照搬官方提供的示例，要么就是用单元测试跑一下，要么排除Spring Security，很少有看到一个完整的项目。太难了，笔者在实操的时候，遇到很多坑，在此做一个记录。
其实，选择用Activiti7没别的原因，就是因为穷。但凡是有钱，谁还用开源版的啊，当然是用商业版啦。国外的工作流引擎没有考虑中国的实际情况，很多像回退、委派、撤销等等功能都没有，所以最省事的还是中国特色的BPM。
Activiti7的文档比较少，但是教程多。Flowable的文档比较齐全，但是网上教程少。
2. Maven依赖
<?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>2.5.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.cjs.example</groupId>
<artifactId>demo-activiti7</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo-activiti7</name>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.activiti</groupId>
<artifactId>activiti-spring-boot-starter</artifactId>
<version>7.1.0.M6</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>4.4</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.1</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.76</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>配置 application.properties
server.port=8080
server.servlet.context-path=/activiti7
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf8&nullCatalogMeansCurrent=true
spring.datasource.username=root
spring.datasource.password=123456
spring.jpa.database=mysql
spring.jpa.open-in-view=true
spring.jpa.properties.hibernate.enable_lazy_load_no_trans=true
spring.jpa.show-sql=true
spring.redis.host=192.168.28.31
spring.redis.port=6379
spring.redis.password=123456
spring.redis.database=1
spring.activiti.database-schema-update=true
spring.activiti.db-history-used=true
spring.activiti.history-level=full
spring.activiti.check-process-definitions=false
spring.activiti.deployment-mode=never-fail代码是最好的老师，查看代码所有配置项都一目了然
这里最好关闭自动部署，不然每次项目启动的时候就会自动部署一次
3. 集成 Spring Security
详见我另一篇 《基于 Spring Security 的前后端分离的权限控制系统》
3.1. 实体类
权限
package com.cjs.example.entity;
import lombok.Getter;
import lombok.Setter;
import javax.persistence.*;
import java.io.Serializable;
import java.util.Set;
/**
* 菜单表
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@Setter
@Getter
@Entity
@Table(name = "sys_menu")
public class SysMenuEntity implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Integer id;
/**
* 资源编码
*/
@Column(name = "code")
private String code;
/**
* 资源名称
*/
@Column(name = "name")
private String name;
/**
* 菜单/按钮URL
*/
@Column(name = "url")
private String url;
/**
* 资源类型（1:菜单，2:按钮）
*/
@Column(name = "type")
private Integer type;
/**
* 父级菜单ID
*/
@Column(name = "pid")
private Integer pid;
/**
* 排序号
*/
@Column(name = "sort")
private Integer sort;
@ManyToMany(mappedBy = "menus")
private Set<SysRoleEntity> roles;
}角色
package com.cjs.example.entity;
import lombok.Getter;
import lombok.Setter;
import javax.persistence.*;
import java.io.Serializable;
import java.util.Set;
/**
* 角色表
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@Setter
@Getter
@Entity
@Table(name = "sys_role")
public class SysRoleEntity implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Integer id;
/**
* 角色名称
*/
@Column(name = "name")
private String name;
@ManyToMany(mappedBy = "roles")
private Set<SysUserEntity> users;
@ManyToMany
@JoinTable(name = "sys_role_menu",
joinColumns = {@JoinColumn(name = "role_id", referencedColumnName = "id")},
inverseJoinColumns = {@JoinColumn(name = "menu_id", referencedColumnName = "id")})
private Set<SysMenuEntity> menus;
@ManyToMany
@JoinTable(name = "sys_dept_role",
joinColumns = {@JoinColumn(name = "role_id", referencedColumnName = "id")},
inverseJoinColumns = {@JoinColumn(name = "dept_id", referencedColumnName = "id")})
private Set<SysDeptEntity> depts;
}
部门
package com.cjs.example.entity;
import lombok.Getter;
import lombok.Setter;
import javax.persistence.*;
import java.io.Serializable;
import java.util.Set;
/**
* 部门表
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@Setter
@Getter
@Entity
@Table(name = "sys_dept")
public class SysDeptEntity implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Integer id;
/**
* 部门名称
*/
@Column(name = "name")
private String name;
/**
* 父级部门ID
*/
@Column(name = "pid")
private Integer pid;
/**
* 组对应的角色
*/
@ManyToMany(mappedBy = "depts")
private Set<SysRoleEntity> roles;
}
用户
package com.cjs.example.entity;
import lombok.Getter;
import lombok.Setter;
import javax.persistence.*;
import java.io.Serializable;
import java.time.LocalDate;
import java.util.Set;
/**
* 用户表
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@Setter
@Getter
@Entity
@Table(name = "sys_user")
public class SysUserEntity implements Serializable {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(name = "id")
private Integer id;
@Column(name = "username")
private String username;
@Column(name = "password")
private String password;
@Column(name = "mobile")
private String mobile;
@Column(name = "enabled")
private Integer enabled;
@Column(name = "create_time")
private LocalDate createTime;
@Column(name = "update_time")
private LocalDate updateTime;
@OneToOne
@JoinColumn(name = "dept_id")
private SysDeptEntity dept;
@ManyToMany
@JoinTable(name = "sys_user_role",
joinColumns = {@JoinColumn(name = "user_id", referencedColumnName = "id")},
inverseJoinColumns = {@JoinColumn(name = "role_id", referencedColumnName = "id")})
private Set<SysRoleEntity> roles;
}
3.2. 自定义 UserDetailsService
package com.cjs.example.domain;
import lombok.Setter;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import java.util.Collection;
import java.util.Set;
/**
* @Author ChengJianSheng
* @Date 2021/6/12
* @see User
* @see User
*/
@Setter
public class MyUserDetails implements UserDetails {
private String username;
private String password;
private boolean enabled;
private Set<SimpleGrantedAuthority> authorities;
public MyUserDetails(String username, String password, boolean enabled, Set<SimpleGrantedAuthority> authorities) {
this.username = username;
this.password = password;
this.enabled = enabled;
this.authorities = authorities;
}
@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
return authorities;
}
@Override
public String getPassword() {
return password;
}
@Override
public String getUsername() {
return username;
}
@Override
public boolean isAccountNonExpired() {
return true;
}
@Override
public boolean isAccountNonLocked() {
return true;
}
@Override
public boolean isCredentialsNonExpired() {
return true;
}
@Override
public boolean isEnabled() {
return enabled;
}
}
MyUserDetailsService
package com.cjs.example.service;
import com.cjs.example.domain.MyUserDetails;
import com.cjs.example.entity.SysMenuEntity;
import com.cjs.example.entity.SysRoleEntity;
import com.cjs.example.entity.SysUserEntity;
import com.cjs.example.repository.SysUserRepository;
import org.apache.commons.lang3.StringUtils;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Collectors;
/**
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@Service
public class MyUserDetailsService implements UserDetailsService {
@Resource
private SysUserRepository sysUserRepository;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
SysUserEntity sysUserEntity = sysUserRepository.findByUsername(username);
Set<SysRoleEntity> userRoles = sysUserEntity.getRoles();
Set<SysRoleEntity> deptRoles = sysUserEntity.getDept().getRoles();
Set<SysRoleEntity> roleSet = new HashSet<>();
roleSet.addAll(userRoles);
roleSet.addAll(deptRoles);
Set<SimpleGrantedAuthority> authorities = roleSet.stream().flatMap(role->role.getMenus().stream())
.filter(menu-> StringUtils.isNotBlank(menu.getCode()))
.map(SysMenuEntity::getCode)
// .map(e -> "ROLE_" + e.getCode())
.map(SimpleGrantedAuthority::new)
.collect(Collectors.toSet());
return new MyUserDetails(sysUserEntity.getUsername(), sysUserEntity.getPassword(), 1==sysUserEntity.getEnabled(), authorities);
}
}如果加了“ROLE_”前缀，那么比较的时候应该用 SimpleGrantedAuthority 进行比较
这里姑且不加这个前缀了，因为后面集成 Activiti 的时候用户组有一个前缀 GROUP_
package com.cjs.example.service;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;
import java.util.Set;
import java.util.stream.Collectors;
@Component("myAccessDecisionService")
public class MyAccessDecisionService {
public boolean hasPermission(String permission) {
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
Object principal = authentication.getPrincipal();
if (principal instanceof UserDetails) {
UserDetails userDetails = (UserDetails) principal;
Set<String> set = userDetails.getAuthorities().stream().map(GrantedAuthority::getAuthority).collect(Collectors.toSet());
return set.contains(permission);
// // AuthorityUtils.createAuthorityList(permission);
// SimpleGrantedAuthority simpleGrantedAuthority = new SimpleGrantedAuthority(permission);
// return userDetails.getAuthorities().contains(simpleGrantedAuthority);
}
return false;
}
}
3.3. 自定义Token过滤器
package com.cjs.example.filter;
import com.alibaba.fastjson.JSON;
import com.cjs.example.domain.MyUserDetails;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
/**
* @Author ChengJianSheng
* @Date 2021/6/17
*/
@Component
public class TokenFilter extends OncePerRequestFilter {
@Autowired
private StringRedisTemplate stringRedisTemplate;
@Override
protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response, FilterChain chain) throws ServletException, IOException {
String token = request.getHeader("token");
String key = "TOKEN:" + token;
if (StringUtils.isNotBlank(token)) {
String value = stringRedisTemplate.opsForValue().get(key);
if (StringUtils.isNotBlank(value)) {
MyUserDetails user = JSON.parseObject(value, MyUserDetails.class);
if (null != user && null == SecurityContextHolder.getContext().getAuthentication()) {
UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(user, null, user.getAuthorities());
SecurityContextHolder.getContext().setAuthentication(authenticationToken);
// 刷新token
// 如果生存时间小于10分钟，则再续1小时
long time = stringRedisTemplate.getExpire(key);
if (time < 600) {
stringRedisTemplate.expire(key, (time + 3600), TimeUnit.SECONDS);
}
}
}
}
chain.doFilter(request, response);
}
}
3.3. WebSecurityConfig
package com.cjs.example.config;
import com.cjs.example.filter.TokenFilter;
import com.cjs.example.handler.*;
import com.cjs.example.service.MyUserDetailsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
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.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
/**
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@EnableGlobalMethodSecurity(prePostEnabled = true)
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private MyUserDetailsService myUserDetailsService;
@Autowired
private MyAuthenticationSuccessHandler myAuthenticationSuccessHandler;
@Autowired
private MyAuthenticationFailureHandler myAuthenticationFailureHandler;
@Autowired
private MyLogoutSuccessHandler myLogoutSuccessHandler;
@Autowired
private TokenFilter tokenFilter;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(myUserDetailsService).passwordEncoder(passwordEncoder());
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.formLogin()
.successHandler(myAuthenticationSuccessHandler)
.failureHandler(myAuthenticationFailureHandler)
.and()
.logout().logoutSuccessHandler(myLogoutSuccessHandler)
.and()
.authorizeRequests()
.antMatchers("/activiti7/login").permitAll()
.anyRequest().authenticated()
.and()
.exceptionHandling()
.accessDeniedHandler(new MyAccessDeniedHandler())
.authenticationEntryPoint(new MyAuthenticationEntryPoint())
.and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.maximumSessions(1)
.maxSessionsPreventsLogin(false)
.expiredSessionStrategy(new MyExpiredSessionStrategy());
http.addFilterBefore(tokenFilter, UsernamePasswordAuthenticationFilter.class);
http.csrf().disable();
}
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
}至此一切都很顺利，毕竟之前也写过很多遍。
package com.cjs.example.controller;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @Author ChengJianSheng
* @Date 2021/6/12
*/
@RestController
@RequestMapping("/hello")
public class HelloController {
@PreAuthorize("@myAccessDecisionService.hasPermission('hello:sayHello')")
@GetMapping("/sayHello")
public String sayHello() {
return "hello";
}
@PreAuthorize("@myAccessDecisionService.hasPermission('hello:sayHi')")
@GetMapping("/sayHi")
public String sayHi() {
return "hi";
}
}
4. 集成 Activiti7
启动项目以后，activiti相关表已经创建好了
接下来，以简单的请假为例来演示
<process id="leave" name="leave" isExecutable="true">
<startEvent id="startevent1" name="Start"></startEvent>
<userTask id="usertask1" name="填写请假单" activiti:assignee="${sponsor}"></userTask>
<sequenceFlow id="flow1" sourceRef="startevent1" targetRef="usertask1"></sequenceFlow>
<endEvent id="endevent1" name="End"></endEvent>
<sequenceFlow id="flow2" sourceRef="usertask1" targetRef="endevent1"></sequenceFlow>
<userTask id="usertask2" name="经理审批" activiti:candidateGroups="${manager}"></userTask>
<sequenceFlow id="flow3" sourceRef="usertask1" targetRef="usertask2"></sequenceFlow>
<endEvent id="endevent2" name="End"></endEvent>
<sequenceFlow id="flow4" sourceRef="usertask2" targetRef="endevent2"></sequenceFlow>
</process>4.1. 部署流程定义
package com.cjs.example.controller;
import com.cjs.example.domain.RespResult;
import com.cjs.example.util.ResultUtils;
import lombok.extern.slf4j.Slf4j;
import org.activiti.engine.RepositoryService;
import org.activiti.engine.repository.Deployment;
import org.activiti.engine.repository.ProcessDefinition;
import org.apache.commons.io.IOUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.InputStream;
import java.util.zip.ZipInputStream;
/**
* @Author ChengJianSheng
* @Date 2021/7/12
*/
@Slf4j
@RestController
@RequestMapping("/deploy")
public class DeploymentController {
@Autowired
private RepositoryService repositoryService;
/**
* 部署
* @param file ZIP压缩包文件
* @param processName 流程名称
* @return
*/
@PostMapping("/upload")
public RespResult<String> upload(@RequestParam("zipFile") MultipartFile file, @RequestParam("processName") String processName) {
String originalFilename = file.getOriginalFilename();
if (!originalFilename.endsWith("zip")) {
return ResultUtils.error("文件格式错误");
}
ProcessDefinition processDefinition = null;
try {
ZipInputStream zipInputStream = new ZipInputStream(file.getInputStream());
Deployment deployment = repositoryService.createDeployment().addZipInputStream(zipInputStream).name(processName).deploy();
processDefinition = repositoryService.createProcessDefinitionQuery().deploymentId(deployment.getId()).singleResult();
} catch (IOException e) {
log.error("流程部署失败！原因: {}", e.getMessage(), e);
}
return ResultUtils.success(processDefinition.getId());
}
/**
* 查看流程图
* @param deploymentId 部署ID
* @param resourceName 图片名称
* @param response
* @return
*/
@GetMapping("/getDiagram")
public void getDiagram(@RequestParam("deploymentId") String deploymentId, @RequestParam("resourceName") String resourceName, HttpServletResponse response) {
InputStream inputStream = repositoryService.getResourceAsStream(deploymentId, resourceName);
// response.setContentType(MediaType.IMAGE_PNG_VALUE);
try {
IOUtils.copy(inputStream, response.getOutputStream());
} catch (IOException e) {
e.printStackTrace();
} finally {
IOUtils.closeQuietly(inputStream);
}
}
}首先登录一下
然后，将流程图文件打成zip压缩包
查看流程图
4.2. 启动流程实例
最开始，我是这样写的
ProcessInstance processInstance = processRuntime.start(ProcessPayloadBuilder
.start()
.withProcessDefinitionId(processDefinitionId)
.withVariable("sponsor", authentication.getName())
.build());当我这样写了以后，第一个问题出现了，没有权限访问
查看代码之后，我发现调用ProcessRuntime的方法需要当前登录用户有“ACTIVITI_USER” 权限
于是，我在数据库sys_menu表里加了一条数据
重新登录后，zhangsan可以调用ProcessRuntime里面的方法了
很快，第二个问题出现了， 当我用 ProcessRuntime#start() 启动流程实例的时候报错了
org.activiti.engine.ActivitiException: Query return 2 results instead of max 1
at org.activiti.engine.impl.DeploymentQueryImpl.executeSingleResult(DeploymentQueryImpl.java:213) ~[activiti-engine-7.1.0.M6.jar:na]
at org.activiti.engine.impl.DeploymentQueryImpl.executeSingleResult(DeploymentQueryImpl.java:30) ~[activiti-engine-7.1.0.M6.jar:na]
查看代码，终于找到问题所在了
这明显就是 Activiti 的Bug，查询所有部署的流程没有加任何查询条件，吐了
于是，百度了一下，网上有人建议换一个版本，于是我将activiti-spring-boot-starter的版本从“7.1.0.M6”换成了“7.1.0.M5”，呵呵，又一个错，缺少字段
原来M6和M5的表结构不一样。我又将版本将至“7.1.0.M4”，这次直接起不来了
没办法，版本改回7.1.0.M6，不用ProcessRuntime，改用原来的RuntimeService
package com.cjs.example.controller;
import com.cjs.example.domain.RespResult;
import com.cjs.example.util.ResultUtils;
import org.activiti.api.process.model.ProcessInstance;
import org.activiti.api.process.model.builders.ProcessPayloadBuilder;
import org.activiti.api.process.runtime.ProcessRuntime;
import org.activiti.engine.RuntimeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import java.util.HashMap;
import java.util.Map;
/**
* @Author ChengJianSheng
* @Date 2021/7/12
*/
@RestController
@RequestMapping("/processInstance")
public class ProcessInstanceController {
@Autowired
private ProcessRuntime processRuntime;
@Autowired
private RuntimeService runtimeService;
@GetMapping("/start")
public RespResult start(@RequestParam("processDefinitionId") String processDefinitionId) {
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
org.activiti.engine.runtime.ProcessInstance processInstance = null;
try {
// ProcessInstance processInstance = processRuntime.start(ProcessPayloadBuilder
// .start()
// .withProcessDefinitionId(processDefinitionId)
// .withVariable("sponsor", authentication.getName())
// .build());
Map<String, Object> variables = new HashMap<>();
variables.put("sponsor", authentication.getName());
processInstance = runtimeService.startProcessInstanceById(processDefinitionId, variables);
} catch (Exception ex) {
ex.printStackTrace();
}
return ResultUtils.success(processInstance);
}
}这里注意 org.activiti.engine.runtime.ProcessInstance 和 org.activiti.api.process.model.ProcessInstance 别搞混了
查看流程定义
package com.cjs.example.controller;
import com.cjs.example.domain.RespResult;
import com.cjs.example.util.ResultUtils;
import org.activiti.api.process.model.ProcessDefinition;
import org.activiti.api.process.runtime.ProcessAdminRuntime;
import org.activiti.api.process.runtime.ProcessRuntime;
import org.activiti.api.runtime.shared.query.Page;
import org.activiti.api.runtime.shared.query.Pageable;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @Author ChengJianSheng
* @Date 2021/7/12
*/
@RestController
@RequestMapping("/processDefinition")
public class ProcessDefinitionController {
@Autowired
private ProcessAdminRuntime processAdminRuntime;
// private ProcessRuntime processRuntime;
@GetMapping("/list")
public RespResult<Page<ProcessDefinition>> getProcessDefinition(){
Page<ProcessDefinition> processDefinitionPage = processAdminRuntime.processDefinitions(Pageable.of(0, 10));
return ResultUtils.success(processDefinitionPage);
}
}
4.3. 查询待办任务并完成
按照我们的流程定义，zhangsan提交了请假申请，所以第一个任务是zhangsan的，先让zhangsan登录
Page<Task> page = taskRuntime.tasks(Pageable.of(0, 10));
if (null != page && page.getTotalItems() > 0) {
for (Task task : page.getContent()) {
taskRuntime.complete(TaskPayloadBuilder.complete().withTaskId(task.getId()).build());
}
}由于第一个任务是一个个人任务，所以不需要先认领任务，直接去完成即可
第二个任务是一个组任务，而且我还用了流程变量，因此要么在启动流程实例的时候就给这个流程变量赋值，要么在上一个任务完成时给变量赋值。
这里，我用的是候选组（Candidate Groups），而不是候选者（Candidate Users）。二者差不多，都是组任务，区别在于如果用候选者的话需要列出所有候选用户并用逗号分隔，如果用候选组的话就只需要写组名即可，多个组之间用逗号分隔。
本例中，我也不用流程变量，例如直接写 activiti:candidateGroups="caiwu"
taskRuntime.complete(TaskPayloadBuilder.complete().withTaskId(task.getId()).withVariable("manager", "caiwu").build());有没有发现，这里查询任务的时候没有指定要查谁的任务，完成任务的时候也没有指定是谁完成的，这都是Spring Security的功劳
到这里可以看出，取的是当前登录用户，即 SecurityContextHolder.getContext().getAuthentication().getName()
SecurityContextHolder.getContext().getAuthentication().getName()同理，完成任务
接下来的是一个组任务，任务必须由“canwu”这个组的人去完成，为了让 lisi 能看到这个任务，需要在sys_menu表中加一条记录
当lisi登录进来以后，调用 taskRuntime.tasks(Pageable.of(0, 10)) 查询自己的任务时
通过跟代码，我们知道，查询任务其实是这样的，等价于下面这段代码
Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
String authenticatedUserId = authentication.getName();
List<String> userGroups = authentication.getAuthorities()
.stream()
.map(GrantedAuthority::getAuthority)
.filter(a -> a.startsWith("GROUP_"))
.map(a -> a.substring("GROUP_".length()))
.collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
List<Task> taskList = taskService.createTaskQuery()
.taskCandidateOrAssigned(authenticatedUserId, userGroups)
.processInstanceId("xxx")
.listPage(0,10);查询当前登录用户的个人任务和组任务
接下来，让 zhaoliu 登录进来
package com.cjs.example.controller;
import org.activiti.api.runtime.shared.query.Page;
import org.activiti.api.runtime.shared.query.Pageable;
import org.activiti.api.task.model.Task;
import org.activiti.api.task.model.builders.TaskPayloadBuilder;
import org.activiti.api.task.runtime.TaskRuntime;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @Author ChengJianSheng
* @Date 2021/7/12
*/
@RestController
@RequestMapping("/task")
public class TaskController {
@Autowired
private TaskRuntime taskRuntime;
@GetMapping("/pageList")
public void pageList() {
// 查询待办任务（个人任务 + 组任务）
Page<Task> page = taskRuntime.tasks(Pageable.of(0, 10));
if (null != page && page.getTotalItems() > 0) {
for (Task task : page.getContent()) {
// 认领任务
taskRuntime.claim(TaskPayloadBuilder.claim().withTaskId(task.getId()).build());
// 完成任务
taskRuntime.complete(TaskPayloadBuilder.complete().withTaskId(task.getId()).build());
}
}
}
}zhaoliu完成任务后，整个流程就结束了
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