一、act_hi_comment和act_hi_attachment兩表表，前者意見表后者是附件表

意見表它里面有一個(gè)類型type字段，分別是comment代表意見(這個(gè)type可以自定義,例如自定義為：通過/退回/提前終止），缺省提供了comment，event是事件，當(dāng)你給附件表增加記錄時(shí)，它就會(huì)在意見表同時(shí)增加多少條記錄，并且type的類型為event。所以取意見時(shí)，需要注意這個(gè)問題。

（一）act_hi_comment提供了以下方法：

/** Add a comment to a task and/or process instance. */ Comment addComment(String taskId, String processInstanceId, String message);/** Add a comment to a task and/or process instance with a custom type. */ Comment addComment(String taskId, String processInstanceId, String type, String message);/** Update a comment to a task and/or process instance. */ void saveComment(Comment comment);/*** Returns an individual comment with the given id. Returns null if no comment exists with the given id.*/ Comment getComment(String commentId);/** Removes all comments from the provided task and/or process instance */ void deleteComments(String taskId, String processInstanceId);/*** Removes an individual comment with the given id.* * @throws FlowableObjectNotFoundException* when no comment exists with the given id.*/ void deleteComment(String commentId);/** The comments related to the given task. */ List<Comment> getTaskComments(String taskId);/** The comments related to the given task of the given type. */ List<Comment> getTaskComments(String taskId, String type);/** All comments of a given type. */ List<Comment> getCommentsByType(String type);/** The all events related to the given task. */ List<Event> getTaskEvents(String taskId);/*** Returns an individual event with the given id. Returns null if no event exists with the given id.*/ Event getEvent(String eventId);/** The comments related to the given process instance. */ List<Comment> getProcessInstanceComments(String processInstanceId);/** The comments related to the given process instance. */ List<Comment> getProcessInstanceComments(String processInstanceId, String type);

(三）真實(shí)應(yīng)用：

總結(jié)

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