springboot集成activiti完成其他人的任务

原创已于 2023-06-27 19:29:29 修改 · 976 阅读

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#spring boot #spring #java

于 2023-06-27 19:22:48 首次发布

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在Activiti流程执行中，遇到一个需求是允许在后续节点完成后自动完成某些可选的前置任务。使用TaskRuntime.complete方法会检查当前用户是否是TaskOwner，导致报错。解决方案包括使用TaskService.complete不检查用户权限或通过SecurityUtil切换用户上下文来模拟TaskOwner完成任务。

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业务需求：流程图有些前置节点是可选的，不影响主流程流转，但是流程后续某个节点完成时需要自动完成前面的可选节点

遇到的问题：使用TaskRuntime.complete会校验当前用户是否是Task Owner。

CompleteTaskPayload completeTaskPayload = new CompleteTaskPayload();
completeTaskPayload.setTaskId(task.getId());
taskRuntime.complete(completeTaskPayload);

如果当前任务不是Task owner会报错： org.activiti.api.runtime.shared.NotFoundException: Unable to find task for the given id: 4093dbf7-14d7-11ee-82b7-024241f4c803 for user: test
(with groups: [activitiTeam] & with roles: [ACTIVITI_USER])
   at org.activiti.runtime.api.impl.TaskRuntimeHelper.getInternalTaskWithChecks(TaskRuntimeHelper.java:176)
   at org.activiti.runtime.api.impl.TaskRuntimeImpl.task(TaskRuntimeImpl.java:96)
   at org.activiti.runtime.api.impl.TaskRuntimeImpl.complete(TaskRuntimeImpl.java:150)

解决方案1：

使用org.activiti.engine.TaskService.complete(task.getId());这个方法不会校验用户；

解决方案2：

类中先定义userNameLocal ：

private final static ThreadLocal<String> userNameLocal = new ThreadLocal<>();

complete完成前切换用户：

SecurityUtil securityUtil = ApplicationContextUtil.getBean(SecurityUtil.class);
securityUtil.logInAs(userName);
CompleteTaskPayload completeTaskPayload = new CompleteTaskPayload();
completeTaskPayload.setTaskId(taskId);
org.activiti.api.task.model.Task task = taskRuntime.complete(completeTaskPayload);
if (userNameLocal.get() != null) {
userNameLocal.remove();
}

其中SecurityUtil的定义

package com.demo.activiti.security;

import org.springframework.beans.factory.annotation.Autowired;
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 org.springframework.security.core.Authentication;

import java.util.Collection;

@Component
public class SecurityUtil {

@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");
}

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);
}
}