不支持的特性: getCursorName

在Spring + Struts2中,数据从action返回到页面时有时会报如下异常:

 

 

严重: Servlet.service() for servlet default threw exception

java.sql.SQLException: 不支持的特性: getCursorName

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:112)

at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java:146)

at oracle.jdbc.driver.BaseResultSet.getCursorName(BaseResultSet.java:37)

at com.mchange.v2.c3p0.impl.NewProxyResultSet.getCursorName(NewProxyResultSet.java:545)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:224)

at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)

at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)

at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)

at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)

at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)

at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)

at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)

at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)

at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)

at com.googlecode.jsonplugin.JSONWriter.value(JSONWriter.java:127)

at com.googlecode.jsonplugin.JSONWriter.add(JSONWriter.java:323)

at com.googlecode.jsonplugin.JSONWriter.bean(JSONWriter.java:225)

at com.googlecode.jsonplugin.JSONWriter.process(JSONWriter.java:161)

 

 

原因:action中存在了已经被实例化的属性,而这些属性在生成json的时候是不合法的,就会报错。

解决方法:

1.在action中去掉该属性的get方法。

2.在struts.xml中做如下配置:

<action name="userStat" class="trendStatAction" method="userStatChart">
	<result type="json">
		<param name="excludeProperties">trendStatService</param>
	</result>
</action>
 去掉该参数的返回。

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