整合ssh时报错：Messages: attempt to create saveOrUpdate event with null entity

发布于 2021-11-18 01:01:45 字数 2293 浏览 867 评论 10

jsp数据提交页面：

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<s:form action="userAction" namespace="/user" method="post">
	<table width="200" border="1">
		<tr>
			<td>name</td>
			<td><s:textfield name="user.name"/></td>
		</tr>
		<tr>
			<td>password</td>
			<td><s:textfield name="user.pwd"/></td>
		</tr>
		<tr>
			<td colspan="2"><s:submit value="submit"/></td>
		</tr>
	</table>
</s:form>
</body>
</html>

控制台报错：

17:41:16,129 ERROR ParametersInterceptor:34 - Developer Notification (set struts.devMode to false to disable this message):
Unexpected Exception caught setting 'user.name' on 'class $Proxy10: Error setting expression 'user.name' with value '[Ljava.lang.String;@12dcbd'
17:41:16,180 ERROR ParametersInterceptor:34 - Developer Notification (set struts.devMode to false to disable this message):
Unexpected Exception caught setting 'user.pwd' on 'class $Proxy10: Error setting expression 'user.pwd' with value '[Ljava.lang.String;@1cbcf19'
um----------------------:null

dao的实现类：

public class S3Impl implements UserDao{

	private SessionFactory sessionFactory = null;
	
	public void setSessionFactory(SessionFactory sessionFactory) {
		this.sessionFactory = sessionFactory;
	}

	@Override
	public boolean create(UserModel um) {
		
		Session session = sessionFactory.getCurrentSession();
		session.save(um);

		return true;
	}

}

页面报错：

Struts Problem Report
Struts has detected an unhandled exception: 

Messages: attempt to create saveOrUpdate event with null entity 
 
File: org/hibernate/event/spi/SaveOrUpdateEvent.java 
Line number: 62

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