Activiti工作流访问途径资源注册和管理

Activiti工作流访问路径资源注册和管理

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??????? 在activiti中每一个用户属于一个用户组，不同的用户拥有不同的权限，不同的权限可以有不同的操作，因此请求的资源路径和登录的安全验证相当的重要。需要添加相关的验证。

?????? 原理实现REST的org.restlet.Application接口实现，实现REST访问方式唯一的入口点，同时添加相关的权限验证。然后再web.xml配置即可。

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web.xml配置如下：
<?xml version="1.0" encoding="UTF-8"?>?

<web-app id="WebApp_ID" version="2.4"?

??????????? xmlns="http://java.sun.com/xml/ns/j2ee"?

??????????? xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"?

??????????? xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee?

???????????????? http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">?

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? <display-name>Activiti REST</display-name>

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? <listener>

??? <listener-class>org.activiti.rest.servlet.ActivitiServletContextListener</listener-class>

? </listener>

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? <!-- Restlet adapter -->?

? <servlet>?

??? <servlet-name>RestletServlet</servlet-name>?

??? <servlet-class>org.restlet.ext.servlet.ServerServlet</servlet-class>

??? <init-param>

????? <!-- Application class name -->

????? <param-name>org.restlet.application</param-name>

????? <param-value>org.activiti.rest.application.ActivitiRestApplication</param-value>

??? </init-param>

? </servlet>

?

? <!-- Catch all requests -->?

? <servlet-mapping>?

??? <servlet-name>RestletServlet</servlet-name>?

? ??<url-pattern>/service/*</url-pattern>?

? </servlet-mapping>?

</web-app>

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代码如下：

package org.activiti.rest.application;

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import org.activiti.rest.api.ActivitiUtil;

import org.activiti.rest.api.DefaultResource;

import org.activiti.rest.api.engine.ProcessEngineResource;

import org.activiti.rest.api.identity.GroupResource;

import org.activiti.rest.api.identity.GroupUsersResource;

import org.activiti.rest.api.identity.LoginResource;

import org.activiti.rest.api.identity.UserGroupsResource;

import org.activiti.rest.api.identity.UserPictureResource;

import org.activiti.rest.api.identity.UserResource;

import org.activiti.rest.api.identity.UserSearchResource;

import org.activiti.rest.api.management.JobExecuteResource;

import org.activiti.rest.api.management.JobResource;

import org.activiti.rest.api.management.JobsExecuteResource;

import org.activiti.rest.api.management.JobsResource;

import org.activiti.rest.api.management.TableDataResource;

import org.activiti.rest.api.management.TableResource;

import org.activiti.rest.api.management.TablesResource;

import org.activiti.rest.api.process.ProcessDefinitionFormResource;

import org.activiti.rest.api.process.ProcessDefinitionPropertiesResource;

import org.activiti.rest.api.process.ProcessDefinitionsResource;

import org.activiti.rest.api.process.ProcessInstanceDiagramResource;

import org.activiti.rest.api.process.ProcessInstanceResource;

import org.activiti.rest.api.process.ProcessInstancesResource;

import org.activiti.rest.api.process.StartProcessInstanceResource;

import org.activiti.rest.api.repository.DeploymentDeleteResource;

import org.activiti.rest.api.repository.DeploymentUploadResource;

import org.activiti.rest.api.repository.DeploymentsDeleteResource;

import org.activiti.rest.api.repository.DeploymentsResource;

import org.activiti.rest.api.task.TaskAddResource;

import org.activiti.rest.api.task.TaskAttachmentAddResource;

import org.activiti.rest.api.task.TaskAttachmentResource;

import org.activiti.rest.api.task.TaskFormResource;

import org.activiti.rest.api.task.TaskOperationResource;

import org.activiti.rest.api.task.TaskPropertiesResource;

import org.activiti.rest.api.task.TaskResource;

import org.activiti.rest.api.task.TaskUrlAddResource;

import org.activiti.rest.api.task.TasksResource;

import org.activiti.rest.api.task.TasksSummaryResource;

import org.restlet.Application;

import org.restlet.Request;

import org.restlet.Response;

import org.restlet.Restlet;

import org.restlet.data.ChallengeScheme;

import org.restlet.routing.Router;

import org.restlet.security.ChallengeAuthenticator;

import org.restlet.security.SecretVerifier;

import org.restlet.security.Verifier;

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/**

?* @author Tijs Rademakers

?*/

public class ActivitiRestApplication extends Application {

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? private ChallengeAuthenticator authenticator;

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? /**

?? * Creates a root Restlet that will receive all incoming calls.

?? */

? @Override

? public synchronized Restlet createInboundRoot() {

??? Verifier verifier = new SecretVerifier() {

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????? @Override

????? public boolean verify(String username, char[] password) throws IllegalArgumentException {

??????? boolean verified = ActivitiUtil.getIdentityService().checkPassword(username, new String(password));

??????? return verified;

????? }

??? };

??? authenticator = new ChallengeAuthenticator(null, true, ChallengeScheme.HTTP_BASIC,

????????? "Activiti Realm") {

?????

????? @Override

????? protected boolean authenticate(Request request, Response response) {

??????? if (request.getChallengeResponse() == null) {

???? ?????return false;

??????? } else {

????????? return super.authenticate(request, response);

??????? }

????? }

??? };

??? authenticator.setVerifier(verifier);

???

??? Router router = new Router(getContext());

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??? router.attachDefault(DefaultResource.class);

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??? router.attach("/process-engine", ProcessEngineResource.class);

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??? router.attach("/login", LoginResource.class);

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??? router.attach("/user/{userId}", UserResource.class);

??? router.attach("/user/{userId}/groups", UserGroupsResource.class);

??? router.attach("/user/{userId}/picture", UserPictureResource.class);

??? router.attach("/users/{searchText}", UserSearchResource.class);

???

??? router.attach("/group/{groupId}", GroupResource.class);

??? router.attach("/groups/{groupId}/users", GroupUsersResource.class);

???

??? router.attach("/process-definitions", ProcessDefinitionsResource.class);

??? router.attach("/process-instances", ProcessInstancesResource.class);

??? router.attach("/process-instance", StartProcessInstanceResource.class);

??? router.attach("/processInstance/{processInstanceId}", ProcessInstanceResource.class);

??? router.attach("/processInstance/{processInstanceId}/diagram", ProcessInstanceDiagramResource.class);

??? router.attach("/process-definition/{processDefinitionId}/form", ProcessDefinitionFormResource.class);

??? router.attach("/process-definition/{processDefinitionId}/properties", ProcessDefinitionPropertiesResource.class);

???

??? router.attach("/tasks", TasksResource.class);

??? router.attach("/tasks-summary", TasksSummaryResource.class);

??? router.attach("/task", TaskAddResource.class);

??? router.attach("/task/{taskId}", TaskResource.class);

??? router.attach("/task/{taskId}/form", TaskFormResource.class);

??? router.attach("/task/{taskId}/attachment", TaskAttachmentAddResource.class);

??? router.attach("/task/{taskId}/url", TaskUrlAddResource.class);

??? router.attach("/task/{taskId}/{operation}", TaskOperationResource.class);

???

??? router.attach("/attachment/{attachmentId}", TaskAttachmentResource.class);

???

??? router.attach("/form/{taskId}/properties", TaskPropertiesResource.class);

???

??? router.attach("/deployments", DeploymentsResource.class);

??? router.attach("/deployment", DeploymentUploadResource.class);

??? router.attach("/deployments/delete", DeploymentsDeleteResource.class);

??? router.attach("/deployment/{deploymentId}", DeploymentDeleteResource.class);

???

??? router.attach("/management/jobs", JobsResource.class);

??? router.attach("/management/job/{jobId}", JobResource.class);

??? router.attach("/management/job/{jobId}/execute", JobExecuteResource.class);

??? router.attach("/management/jobs/execute", JobsExecuteResource.class);

???

??? router.attach("/management/tables", TablesResource.class);

??? router.attach("/management/table/{tableName}", TableResource.class);

??? router.attach("/management/table/{tableName}/data", TableDataResource.class);

???

??? authenticator.setNext(router);

???

??? return authenticator;

? }

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? public String authenticate(Request request, Response response) {

??? if (!request.getClientInfo().isAuthenticated()) {

????? authenticator.challenge(response, false);

????? return null;

??? }

??? return request.getClientInfo().getUser().getIdentifier();

? }

}

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