{"id":10006727,"date":"2022-10-25T15:59:21","date_gmt":"2022-10-25T07:59:21","guid":{"rendered":"https:\/\/ityet.com\/?p=10006727"},"modified":"2022-10-25T15:59:21","modified_gmt":"2022-10-25T07:59:21","slug":"flowable-%e6%9c%8d%e5%8a%a1%e4%bb%bb%e5%8a%a1%e6%89%a7%e8%a1%8c%e7%9a%84%e4%b8%89%e7%a7%8d%e6%96%b9%e5%bc%8f","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006727","title":{"rendered":"Flowable \u670d\u52a1\u4efb\u52a1\u6267\u884c\u7684\u4e09\u79cd\u65b9\u5f0f"},"content":{"rendered":"

\u524d\u9762\u548c\u5c0f\u4f19\u4f34\u4eec\u5206\u522b\u804a\u4e86 Flowable \u4e2d\u7684 ReceiveTask \u548c UserTask\uff0c\u4eca\u5929\u6211\u4eec\u6765\u770b\u770b\u53e6\u5916\u4e00\u4e2a\u6bd4\u8f83\u5e38\u89c1\u7684 Task –> ServiceTask\u3002<\/p>\n

1. ServiceTask<\/h2>\n

ServiceTask \u4ece\u540d\u5b57\u4e0a\u770b\u5c31\u662f\u670d\u52a1\u4efb\u52a1\uff0c\u5b83\u7684\u56fe\u6807\u4e00\u822c\u662f\u50cf\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n

\"\"<\/p>\n

ServiceTask \u4e00\u822c\u7531\u7cfb\u7edf\u81ea\u52a8\u5b8c\u6210\uff0c\u5f53\u6d41\u7a0b\u8d70\u5230\u8fd9\u4e00\u6b65\u7684\u65f6\u5019\uff0c\u4e0d\u4f1a\u81ea\u52a8\u505c\u4e0b\u6765\uff0c\u800c\u662f\u4f1a\u53bb\u6267\u884c\u6211\u4eec\u63d0\u524d\u5728 ServiceTask \u4e2d\u914d\u7f6e\u597d\u7684\u65b9\u6cd5\u3002<\/p>\n

2. \u5b9e\u8df5<\/h2>\n

\u6211\u4eec\u901a\u8fc7\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\u6765\u770b\u4e00\u4e0b ServiceTask \u8981\u600e\u4e48\u73a9\u3002<\/p>\n

\u5047\u8bbe\u6211\u6709\u5982\u4e0b\u4e00\u4e2a\u7b80\u5355\u7684\u6d41\u7a0b\u56fe\uff1a<\/p>\n

\"\"<\/p>\n

\u4e2d\u95f4\u8fd9\u4e2a\u5c31\u662f\u4e00\u4e2a ServiceTask\u3002<\/p>\n

\u5f53\u6d41\u7a0b\u6267\u884c\u5230 ServiceTask \u7684\u65f6\u5019\uff0c\u5177\u4f53\u8981\u505a\u54ea\u4e9b\u4e8b\u60c5\uff1f\u6709\u4e09\u79cd\u4e0d\u540c\u7684\u65b9\u5f0f\u6765\u8bbe\u7f6e\u8fd9\u91cc\u7684\u4efb\u52a1\uff0c\u6211\u4eec\u5206\u522b\u6765\u770b\u3002<\/p>\n

2.1 \u76d1\u542c\u7c7b<\/h3>\n

\u9996\u5148\u6211\u4eec\u53ef\u4ee5\u8bbe\u7f6e\u4e00\u4e2a\u76d1\u542c\u7c7b\uff0c\u8fd9\u4e2a\u76d1\u542c\u7c7b\u6709\u4e00\u4e2a\u786c\u6027\u89c4\u5b9a\u5c31\u662f\u9700\u8981\u5b9e\u73b0 JavaDelegate \u63a5\u53e3\uff0c\u50cf\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n

public class MyServiceTask implements JavaDelegate {\n    @Override\n    public void execute(DelegateExecution execution) {\n        System.out.println("========MyServiceTask==========");\n    }\n}<\/code><\/pre>\n
\u5728\u8fd9\u4e2a\u76d1\u542c\u7c7b\u4e2d\u6211\u4eec\u53ef\u4ee5\u5b8c\u6210\u4e00\u4e9b\u64cd\u4f5c\uff0c\u901a\u8fc7\u8fd9\u4e2a execution \u4e5f\u53ef\u4ee5\u83b7\u53d6\u5230\u5728\u6d41\u7a0b\u8282\u70b9\u4e4b\u95f4\u4f20\u8f93\u7684\u53d8\u91cf\u3002<\/p>\n
\u8fd9\u4e2a\u7c7b\u5b9a\u4e49\u597d\u4e4b\u540e\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u5728\u6d41\u7a0b\u5b9a\u4e49\u7684\u65f6\u5019\uff0c\u914d\u7f6e\u8fd9\u4e2a\u7c7b\u7684\u5168\u8def\u5f84\u5373\u53ef\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n
\"\"<\/p>\n
\u8fd9\u4e2a\u914d\u7f6e\u5bf9\u5e94\u7684 XML \u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
  <process id="demo01" name="\u6d4b\u8bd5\u6d41\u7a0b" isExecutable="true">\n    <documentation>\u6d4b\u8bd5\u6d41\u7a0b<\/documentation>\n    <startEvent id="startEvent1" flowable:formFieldValidation="true"><\/startEvent>\n    <sequenceFlow id="sid-33A78082-C2FD-48BE-8B87-99FB20F0B331" sourceRef="startEvent1" targetRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8"><\/sequenceFlow>\n    <serviceTask id="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" flowable:class="org.javaboy.flowableidm.MyServiceTask"><\/serviceTask>\n    <endEvent id="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/endEvent>\n    <sequenceFlow id="sid-0698809E-0A6C-4B92-A167-AE96A8CB75F2" sourceRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" targetRef="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/sequenceFlow>\n  <\/process><\/code><\/pre>\n
\u5c0f\u4f19\u4f34\u4eec\u770b\u5230\uff0c\u5728 ServiceTask \u6807\u7b7e\u4e2d\u7684 flowable:class="org.javaboy.flowableidm.MyServiceTask"<\/code> \u5c31\u8868\u793a ServiceTask \u6267\u884c\u7684\u670d\u52a1\u7c7b\u3002<\/p>\n
\u914d\u7f6e\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u90e8\u7f72\u5e76\u542f\u52a8\u8fd9\u4e2a\u6d41\u7a0b\uff0c\u7531\u4e8e\u8fd9\u4e2a\u6d41\u7a0b\u9664\u4e86\u5f00\u59cb\u548c\u7ed3\u675f\uff0c\u5c31\u8fd9\u4e00\u4e2a\u8282\u70b9\uff0c\u6240\u4ee5\u6d41\u7a0b\u4e00\u542f\u52a8\u5c31\u81ea\u52a8\u7ed3\u675f\u4e86\u3002\u4e0d\u8fc7\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u63a7\u5236\u53f0\u6253\u5370\u51fa\u6765\u4e86\u65e5\u5fd7\uff0c\u8bf4\u660e\u8fd9\u4e2a ServiceTask \u786e\u5b9e\u662f\u6267\u884c\u4e86\u3002<\/p>\n
2.2 \u59d4\u6258\u8868\u8fbe\u5f0f<\/h3>\n
\u6211\u4eec\u4e5f\u53ef\u4ee5\u914d\u7f6e\u59d4\u6258\u8868\u8fbe\u5f0f\u3002<\/p>\n
\u59d4\u6258\u8868\u8fbe\u5f0f\u662f\u6307\u5c06\u4e00\u4e2a\u5b9e\u73b0\u4e86 JavaDelegate \u63a5\u53e3\u7684\u7c7b\u6ce8\u518c\u5230 Spring \u5bb9\u5668\u4e2d\uff0c\u7136\u540e\u6211\u4eec\u5728\u6d41\u7a0b\u8282\u70b9\u7684\u914d\u7f6e\u4e2d\u4e0d\u7528\u5199\u5b8c\u6574\u7684\u7c7b\u540d\u4e86\uff0c\u53ea\u9700\u8981\u5199 Spring \u5bb9\u5668\u4e2d\u7684 Bean \u540d\u79f0\u5373\u53ef\u3002<\/p>\n
\u50cf\u4e0b\u9762\u8fd9\u6837\uff1a<\/p>\n
@Component\npublic class MyServiceTask implements JavaDelegate {\n    @Override\n    public void execute(DelegateExecution execution) {\n        System.out.println("========MyServiceTask==========");\n    }\n}<\/code><\/pre>\n
\u8fd9\u4e2a\u7c7b\u6ce8\u518c\u5230 Spring \u5bb9\u5668\u4e2d\u7684\u9ed8\u8ba4\u540d\u79f0\u662f\u7c7b\u540d\u9996\u5b57\u6bcd\u5c0f\u5199\uff0c\u5373 myServiceTask\u3002<\/p>\n
\u73b0\u5728\u6211\u4eec\u5728\u6d41\u7a0b\u56fe\u4e2d\uff0c\u53ef\u4ee5\u6309\u7167\u5982\u4e0b\u65b9\u5f0f\u8fdb\u884c\u914d\u7f6e\uff1a<\/p>\n
\"\"<\/p>\n
\u5bf9\u5e94\u7684 XML \u6587\u4ef6\u5982\u4e0b\uff1a<\/p>\n
<process id="demo01" name="\u6d4b\u8bd5\u6d41\u7a0b" isExecutable="true">\n  <documentation>\u6d4b\u8bd5\u6d41\u7a0b<\/documentation>\n  <startEvent id="startEvent1" flowable:formFieldValidation="true"><\/startEvent>\n  <sequenceFlow id="sid-33A78082-C2FD-48BE-8B87-99FB20F0B331" sourceRef="startEvent1" targetRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8"><\/sequenceFlow>\n  <serviceTask id="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" flowable:delegateExpression="${myServiceTask}"><\/serviceTask>\n  <endEvent id="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/endEvent>\n  <sequenceFlow id="sid-0698809E-0A6C-4B92-A167-AE96A8CB75F2" sourceRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" targetRef="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/sequenceFlow>\n<\/process><\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0cflowable:delegateExpression="${myServiceTask}"<\/code> \u5c31\u8868\u793a\u6267\u884c\u7684\u4e00\u4e2a\u8868\u8fbe\u5f0f\u3002<\/p>\n
\u6d4b\u8bd5\u8fc7\u7a0b\u540c 2.1 \u5c0f\u8282\uff0c\u6211\u5c31\u4e0d\u518d\u8d58\u8ff0\u4e86\u3002<\/p>\n
\u6700\u540e\u603b\u7ed3\u4e00\u4e0b\uff0c\u59d4\u6258\u8868\u8fbe\u5f0f\uff0c\u4e00\u5b9a\u662f JavaDelegate \u63a5\u53e3\u7684\u5b9e\u73b0\u7c7b\uff0c\u5c06\u8fd9\u4e2a\u5b9e\u73b0\u7c7b\u6ce8\u518c\u5230 Spring \u5bb9\u5668\u4e2d\uff0c\u7136\u540e\u5728\u4f7f\u7528\u7684\u65f6\u5019\uff0c\u6839\u636e Bean \u7684\u540d\u79f0\u4ece Spring \u5bb9\u5668\u4e2d\u67e5\u627e\u5373\u53ef\u3002<\/p>\n
2.3 \u8868\u8fbe\u5f0f<\/h3>\n
\u6211\u4eec\u4e5f\u53ef\u4ee5\u4f7f\u7528\u8868\u8fbe\u5f0f\u3002<\/p>\n
\u8868\u8fbe\u5f0f\u5c31\u662f\u4e00\u4e2a\u666e\u901a\u7c7b\u7684\u666e\u901a\u65b9\u6cd5\uff0c\u5c06\u8fd9\u4e2a\u666e\u901a\u7c7b\u6ce8\u518c\u5230 Spring \u5bb9\u5668\u4e2d\uff0c\u7136\u540e\u8868\u8fbe\u5f0f\u4e2d\u8fd8\u53ef\u4ee5\u6267\u884c\u8fd9\u4e2a\u7c7b\u4e2d\u7684\u65b9\u6cd5\uff0c\u7c7b\u4f3c\u4e0b\u9762\u8fd9\u6837\uff0c\u4efb\u610f\u5b9a\u4e49\u4e00\u4e2a Java \u7c7b\uff1a<\/p>\n
@Component\npublic class MyServiceTask2 {\n    public void hello() {\n        System.out.println("========MyServiceTask2==========");\n    }\n}<\/code><\/pre>\n
\u7136\u540e\u5728\u6d41\u7a0b\u56fe\u4e2d\u6309\u7167\u5982\u4e0b\u65b9\u5f0f\u8fdb\u884c\u914d\u7f6e\uff1a<\/p>\n
\"\"<\/p>\n
\u8868\u8fbe\u5f0f\u4e2d\u6709\u4e00\u90e8\u5206\u5185\u5bb9\u9690\u85cf\u4e86\uff0c\u5b8c\u6574\u7684\u8868\u8fbe\u5f0f\u662f ${myServiceTask2.hello()}<\/code>\u3002<\/p>\n
\u5bf9\u5e94\u7684 XML \u6587\u4ef6\u5982\u4e0b\uff1a<\/p>\n
<process id="demo01" name="\u6d4b\u8bd5\u6d41\u7a0b" isExecutable="true">\n  <documentation>\u6d4b\u8bd5\u6d41\u7a0b<\/documentation>\n  <startEvent id="startEvent1" flowable:formFieldValidation="true"><\/startEvent>\n  <sequenceFlow id="sid-33A78082-C2FD-48BE-8B87-99FB20F0B331" sourceRef="startEvent1" targetRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8"><\/sequenceFlow>\n  <serviceTask id="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" flowable:expression="${myServiceTask2.hello()}"><\/serviceTask>\n  <endEvent id="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/endEvent>\n  <sequenceFlow id="sid-0698809E-0A6C-4B92-A167-AE96A8CB75F2" sourceRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" targetRef="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/sequenceFlow>\n<\/process><\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u8868\u8fbe\u5f0f\u7684\u5185\u5bb9\u662f flowable:expression="${myServiceTask2.hello()}<\/code>\u3002<\/p>\n
\u6d4b\u8bd5\u65b9\u5f0f\u540c 2.1 \u5c0f\u8282\uff0c\u8fd9\u91cc\u6211\u4e0d\u518d\u8d58\u8ff0\u3002<\/p>\n
3. \u7c7b\u4e2d\u5b57\u6bb5<\/h2>\n
\u53ef\u80fd\u6709\u5c0f\u4f19\u4f34\u6ce8\u610f\u5230\uff0c\u6211\u4eec\u5728\u7ed8\u5236\u6d41\u7a0b\u56fe\u7684\u65f6\u5019\uff0c\u8fd8\u53ef\u4ee5\u4e3a\u7c7b\u8bbe\u7f6e\u4e00\u4e2a\u5b57\u6bb5\u3002<\/p>\n
\u4f8b\u5982\u6211\u60f3\u7ed9 ServiceTask \u7684\u6267\u884c\u7c7b\u8bbe\u7f6e\u4e00\u4e2a username \u5b57\u6bb5\uff0c\u5982\u4e0b\uff1a<\/p>\n
\"\"<\/p>\n
\"\"<\/p>\n
\u8bbe\u7f6e\u5b8c\u6210\u540e\uff0c\u5bf9\u5e94\u7684 XML \u5982\u4e0b\uff1a<\/p>\n
<process id="demo01" name="\u6d4b\u8bd5\u6d41\u7a0b" isExecutable="true">\n  <documentation>\u6d4b\u8bd5\u6d41\u7a0b<\/documentation>\n  <startEvent id="startEvent1" flowable:formFieldValidation="true"><\/startEvent>\n  <sequenceFlow id="sid-33A78082-C2FD-48BE-8B87-99FB20F0B331" sourceRef="startEvent1" targetRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8"><\/sequenceFlow>\n  <serviceTask id="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" flowable:delegateExpression="${myServiceTask}">\n    <extensionElements>\n      <flowable:field name="username">\n        <flowable:string><![CDATA[javaboy]]><\/flowable:string>\n      <\/flowable:field>\n    <\/extensionElements>\n  <\/serviceTask>\n  <endEvent id="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/endEvent>\n  <sequenceFlow id="sid-0698809E-0A6C-4B92-A167-AE96A8CB75F2" sourceRef="sid-6FA66E2A-F8E6-4F10-8FA2-6450408E17D8" targetRef="sid-A5F11956-15EA-4574-98D0-29A4E3DB5495"><\/sequenceFlow>\n<\/process><\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u8fd9\u91cc\u901a\u8fc7 extensionElements<\/code> \u8282\u70b9\u63cf\u8ff0\u4e86\u989d\u5916\u7684\u4fe1\u606f\u3002<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u5728 Java \u7c7b\u4e2d\u8bbf\u95ee\u5230\u8fd9\u4e2a\u53d8\u91cf\u4e86\uff0c\u5982\u4e0b\uff1a<\/p>\n
@Component\npublic class MyServiceTask implements JavaDelegate {\n    Expression username;\n    @Override\n    public void execute(DelegateExecution execution) {\n        System.out.println("username.getExpressionText() = " + username.getExpressionText());\n        System.out.println("username.getValue(execution) = " + username.getValue(execution));\n        System.out.println("========MyServiceTask==========");\n    }\n}<\/code><\/pre>\n
\u60f3\u8981\u83b7\u53d6\u5230 username \u5bf9\u5e94\u7684\u503c\uff0c\u4e0a\u9762\u8fd9\u6bb5\u4ee3\u7801\u4e2d\uff0c\u677e\u54e5\u7ed9\u5927\u5bb6\u6f14\u793a\u4e86\u4e24\u79cd\u65b9\u5f0f\u3002<\/p>\n
\u4e0d\u8fc7\u9700\u8981\u6ce8\u610f\uff0c\u8fd9\u79cd\u8bbe\u7f6e\u7c7b\u4e2d\u5b57\u6bb5\u7684\u65b9\u5f0f\uff0c\u9002\u7528\u4e8e 2.1 \u548c 2.2 \u5c0f\u8282\u7684\u60c5\u51b5\uff0c\u4e0d\u9002\u7528\u4e8e 2.3 \u5c0f\u8282\u7684\u60c5\u51b5\u3002<\/p>\n
\u597d\u5566\uff0c\u4eca\u5929\u548c\u5c0f\u4f19\u4f34\u4eec\u4ecb\u7ecd\u4e86 ServiceTask \u6267\u884c\u7684\u4e09\u79cd\u60c5\u51b5\uff0c\u8fd9\u4e9b\u5185\u5bb9\u6211\u5c06\u6765\u4e5f\u4f1a\u5f55\u5236\u6210\u89c6\u9891\u653e\u5728 TienChin \u9879\u76ee\u4e2d\uff0c\u611f\u5174\u8da3\u7684\u5c0f\u4f19\u4f34\u53ef\u4ee5\u8bd5\u8bd5\u5566\uff5e<\/p>\n
https:\/\/segmentfault.com\/a\/1190000042684356<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
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