json处理数据报错

[meisen2002]

我在使用hibernate获取数据，进行json数据转换时报错了，报错信息如下:

ERROR [action] line:253 Servlet.service() for servlet action threw exception
java.lang.NoSuchMethodException: Property 'callback' has no getter method
at org.apache.commons.beanutils.PropertyUtils.getSimpleProperty(PropertyUtils.java:1180)
at org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUtils.java:772)
at org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:801)
at net.sf.json.JSONObject.fromBean(JSONObject.java:161)
at net.sf.json.JSONObject.fromObject(JSONObject.java:246)
at net.sf.json.JSONObject.setValue(JSONObject.java:534)
at net.sf.json.JSONObject.fromBean(JSONObject.java:162)
at net.sf.json.JSONObject.fromObject(JSONObject.java:246)
at net.sf.json.JSONArray.put(JSONArray.java:1319)
at net.sf.json.JSONArray.<init>(JSONArray.java:437)
at net.sf.json.JSONArray.fromCollection(JSONArray.java:128)
at net.sf.json.JSONArray.fromObject(JSONArray.java:160)
at com.jsshse.action.UserListAction2.execute(UserListAction2.java:73)
at org.springframework.web.struts.DelegatingActionProxy.execute(DelegatingActionProxy.java:106)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:415)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:174)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:75)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:77)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)

我的POJO对象中并不存在“callback”这个属性，断点调试查询已经取得了相关的数据。POJO对象USER与ROLE对应关系为一对多。其余的代码如下，请各位大虾帮忙分析下原因。


action中代码如下：

     JSONArray.fromObject(pageList.getObjectList());

user.hbm.xml：

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="com.jsshse.bean">
	<class name="User" table="USER">
		<id name="id" type="integer">
			<column name="id" />
			<generator class="assigned" />
		</id>
		<property name="name" type="string">
			<column name="name" length="50" />
		</property>
		<property name="password" type="string">
			<column name="password" length="50" />
		</property>
        <many-to-one name="role" class="com.jsshse.bean.RoleBean" fetch="select"  >
            <column name="roleId" not-null="true" />
        </many-to-one>
	</class>
</hibernate-mapping>

[zidasine]

你传的参数进来是带callback：xxx了

[meisen2002]

[Quote=引用 1 楼 zidasine 的回复:]
你传的参数进来是带callback：xxx了
[/Quote]

查询那边的代码如下：

public List findList(final Pages pages) {
		return getHibernateTemplate().executeFind(new HibernateCallback() {
			public Object doInHibernate(Session s) throws HibernateException {
				Criteria c = s.createCriteria(User.class);
				if(pages.getCriteriaList().size()>0){
					c.add(Restrictions.sqlRestriction(pages.getConditionSQL()));
				}
				if(pages.getSortField().length()>0){
					if(pages.getSortType().equalsIgnoreCase("desc")){
						c.addOrder(Order.desc(pages.getSortField()));
					}else{
						c.addOrder(Order.asc(pages.getSortField()));
					}
				}
				pages.executeCount();
		        c.setFirstResult(pages.getSpage());
		        c.setMaxResults(pages.getPerPageNum());
				return c.list();
			}
		});
	}

并没有传入callback参数啥的哦

[PSL124]

还有可能是 你的Tomcat没有编译该.java文件，那个calllback方法是最新写的，你 把项目中的web-inf refresh一下 ，再试试