public class CatAction {
private ICatService catService;
public ICatService getCatService() {
return catService;
}
public void setCatService(ICatService catService) {
this.catService = catService;
} private List<Cat> catlist = new ArrayList<Cat>();
private Cat cat;
public Cat getCat() {
return cat;
}
public void setCat(Cat cat) {
this.cat = cat;
} public String getMotherId() {
return motherId;
}
public void setMotherId(String motherId) {
this.motherId = motherId;
}
// private Cat catMother = new Cat();
public List<Cat> getCatlist() {
return catlist;
}
public void setCatlist(List<Cat> catlist) {
this.catlist = catlist;
}
public String list()throws Exception
{
catlist = catService.listCats();
return "list";
}
public String add()throws Exception
{
catService.createCat(cat); return list();
}
}配置如下:
<bean id="catAction" class="com.struts2.bean.hibernate.CatAction" scope="prototype">
<property name="catService" ref="catService">
</property>
</bean>
org.springframework.dao.InvalidDataAccessApiUsageException: detached entity passed to persist: com.struts2.bean.hibernate.Cat; nested exception is org.hibernate.PersistentObjectException: detached entity passed to persist: com.struts2.bean.hibernate.Cat
org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:655)
org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:413)
org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:370)
org.springframework.orm.hibernate3.HibernateTemplate.persist(HibernateTemplate.java:719)
com.struts2.bean.hibernate.CatDaoImpl.createCat(CatDaoImpl.java:12)
com.struts2.bean.hibernate.CatServiceImpl.createCat(CatServiceImpl.java:21)请高手指点一下可能是什么原因
private ICatService catService;
public ICatService getCatService() {
return catService;
}
public void setCatService(ICatService catService) {
this.catService = catService;
} private List<Cat> catlist = new ArrayList<Cat>();
private Cat cat;
public Cat getCat() {
return cat;
}
public void setCat(Cat cat) {
this.cat = cat;
} public String getMotherId() {
return motherId;
}
public void setMotherId(String motherId) {
this.motherId = motherId;
}
// private Cat catMother = new Cat();
public List<Cat> getCatlist() {
return catlist;
}
public void setCatlist(List<Cat> catlist) {
this.catlist = catlist;
}
public String list()throws Exception
{
catlist = catService.listCats();
return "list";
}
public String add()throws Exception
{
catService.createCat(cat); return list();
}
}配置如下:
<bean id="catAction" class="com.struts2.bean.hibernate.CatAction" scope="prototype">
<property name="catService" ref="catService">
</property>
</bean>
org.springframework.dao.InvalidDataAccessApiUsageException: detached entity passed to persist: com.struts2.bean.hibernate.Cat; nested exception is org.hibernate.PersistentObjectException: detached entity passed to persist: com.struts2.bean.hibernate.Cat
org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:655)
org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:413)
org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:370)
org.springframework.orm.hibernate3.HibernateTemplate.persist(HibernateTemplate.java:719)
com.struts2.bean.hibernate.CatDaoImpl.createCat(CatDaoImpl.java:12)
com.struts2.bean.hibernate.CatServiceImpl.createCat(CatServiceImpl.java:21)请高手指点一下可能是什么原因
2. 还有一种原因是关联关系配置时，set标签的级联方式尽量使用cascade=CascadeType.REFRESH
我第一进入到新规的jsp界面，输入项都为空，添加一条记录成功。
但是第二次在进入到新规的jsp界面，输入项都是上次输入的值，这个地方就不太正常了（应该为空），
而且提交的时候，cat里面也保留了上一次提交的id（正常不应该有id，应该是数据库自动生成的），所以就错了。
http://topic.csdn.net/u/20111126/09/adabdc00-ee42-4446-9eef-6f51be937f3d.html
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<constant name="struts.objectFactory" value="org.apache.struts2.spring.StrutsSpringObjectFactory" />
<package name="main" namespace="/" extends="struts-default">
<global-results>
<result name="login">/login.jsp</result>
</global-results>
<action name="*Cat" class="catAction" method="{1}" >
<result >/successCat.jsp</result>
<result name="list">/listCat.jsp</result>
<result name="add">/editCat.jsp</result>
<result name="initadd">/editCat.jsp</result>
<result name="edit">/editCat.jsp</result>
</action>
</package>
</struts>
何必加一个type="redirect" 请问意义何在 没有的话一样跳转 我记得redirect是重定位到另外一个action吧，既然是跳到jsp就不需要用了
没有人遇到同样的问题吗？
import="java.util.List" errorPage="" %>
<%@ taglib uri="/struts-tags" prefix="struts" %>
<%@ taglib prefix="sx" uri="/struts-dojo-tags"%> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>My jsp 'index.jsp' starting page</title>
<link href="css/FormUITag.css" rel="stylesheet" type="text/css" />
<sx:head/>
</head>
<body>
<struts:form action="addCat!add" namespace="/" >
<struts:label value="form标签"></struts:label>
<struts:textfield name="cat.name" label="Name:" />
<struts:select label="Mother"
name="motherId"
list="mapMM"
listKey="key"
listValue="value"
headerKey="0" headerValue="--请选择子类型--"
/><struts:textfield name="cat.description" label="Description:" />
<struts:submit value="添加、编辑人员"></struts:submit>
<struts:hidden name="command" id="comand"/>
<struts:hidden name="editId" id="editId"/>
</struts:form>
</body>
</html>
<result name="initadd">/editCat.jsp</result>
<result name="edit">/editCat.jsp</result>你先把这三个result都加上type="redirect"，重新部署项目重新启动项目，我估计原因就是你所有请求都是用的转发，这样原先实体类的值都会保存在ValueStack中，而你页面中刚好又使用的是struts标签，就算你没有写value它也会自动从ValueStack中取出name与之相对应的值赋上，当你下此再增加是就会主键重复。一般情况下，增删改操作都需要type="redirect"就是重定向，避免重复提交，只有查询时才会使用转发。如果还是不行你可以试着将struts标签先换为普通标签试试。