图解 activiti-explorer项目下的在线流程设计器新建的流程,保存时出现异常:Unexpected error: could not save model 解决办
2018-06-07 12:21
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最近由于公司业务系统升级需要,研究activiti工作流, 运行activiti-explorer示例项目,自己尝试设计一个新流程,当保存流程时,无法保存流程,提示:Unexpected error: could not save model
操作如下
图一 点击保存流程:
图二:确认保存流程
图三:保存失败,提示Unexpected error: could not save model
然后查询后台异常堆栈信息,报以下异常错误:
六月 07, 2018 11:55:12 上午 org.apache.catalina.core.StandardWrapperValve invoke 严重: Servlet.service() for servlet [dispatcher] in context with path [/activiti-explorer] threw exception [Handler dispatch failed; nested exception is java.lang.NoClassDefFoundError: org/apache/batik/script/InterpreterPool] with root cause java.lang.ClassNotFoundException: org.apache.batik.script.InterpreterPool at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547) at org.apache.batik.bridge.BridgeContext.<clinit>(BridgeContext.java:276) at org.apache.batik.transcoder.SVGAbstractTranscoder.createBridgeContext(SVGAbstractTranscoder.java:337) at org.apache.batik.transcoder.SVGAbstractTranscoder.createBridgeContext(SVGAbstractTranscoder.java:313) at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:194) at org.apache.batik.transcoder.image.ImageTranscoder.transcode(ImageTranscoder.java:92) at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(XMLAbstractTranscoder.java:142) at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(SVGAbstractTranscoder.java:156) at org.activiti.rest.editor.model.ModelSaveRestResource.saveModel(ModelSaveRestResource.java:82) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
对应的截图:
经分析异常报错信息:怀疑是找不到 org.apache.batik.script.InterpreterPool 这个类,于是上网找到这个类所对应的jar包。
之后在activiti-explorer项目pom.xml文件中添加所需jar包依赖,如下所示
<!-- https://mvnrepository.com/artifact/batik/batik-script --> <dependency> <groupId>batik</groupId> <artifactId>batik-script</artifactId> <version>1.6</version> </dependency>
对应的项目截图如下:
之后再重新对项目 mvc clean install,如下图所示:
执行完mvc clean install后 再重新运行项目:执行 mvc tomcat7:run,如下图所示
然后重新进入系统,在流程工作区设计新流程,保存流程成功!问题解决!保存成功后如下图示所示:
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