Spring 在JdbcOperationsSessionRepository中找不到能够从java.lang.Object类型转换为byte[]类型的转换器

我试图通过基于SpringXML的配置将spring会话存储在OracleDB中

我已经手动创建了schema-oracle.sql中提供的表（SPRING_SESSION和SPRING_SESSION_属性），并按照SPRING doc guide中的建议在web.xml和SESSION.xml中提供了条目：

WEb INF/lib/

中的JAR：

spring-web-4.0.2.RELEASE.jar
spring-session-1.2.0.RELEASE.jar
spring-session-jdbc-1.2.0.RELEASE.jar
spring-jdbc-4.0.2.RELEASE.jar

错误跟踪：

JBWEB000236: Servlet.service() for servlet jsp threw exception: org.springframework.core.convert.ConverterNotFoundException: **No converter found capable of converting from type java.lang.Object to type byte[]**
    at org.springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:291) [spring-core-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:177) [spring-core-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    **at org.springframework.session.jdbc.JdbcOperationsSessionRepository.serialize(JdbcOperationsSessionRepository.java:524) [spring-session-1.2.0.RELEASE.jar:]**
    at org.springframework.session.jdbc.JdbcOperationsSessionRepository.access$200(JdbcOperationsSessionRepository.java:130) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.jdbc.JdbcOperationsSessionRepository$1$2.setValues(JdbcOperationsSessionRepository.java:298) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:997) [spring-jdbc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate$4.doInPreparedStatement(JdbcTemplate.java:987) [spring-jdbc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:642) [spring-jdbc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:671) [spring-jdbc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.jdbc.core.JdbcTemplate.batchUpdate(JdbcTemplate.java:987) [spring-jdbc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.session.jdbc.JdbcOperationsSessionRepository$1.doInTransactionWithoutResult(JdbcOperationsSessionRepository.java:290) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.transaction.support.TransactionCallbackWithoutResult.doInTransaction(TransactionCallbackWithoutResult.java:34) [spring-tx-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:133) [spring-tx-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.session.jdbc.JdbcOperationsSessionRepository.save(JdbcOperationsSessionRepository.java:273) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.jdbc.JdbcOperationsSessionRepository.save(JdbcOperationsSessionRepository.java:130) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.commitSession(SessionRepositoryFilter.java:244) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryRequestWrapper.access$100(SessionRepositoryFilter.java:214) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.SessionRepositoryFilter$SessionRepositoryResponseWrapper.onResponseCommitted(SessionRepositoryFilter.java:202) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.OnCommittedResponseWrapper.doOnResponseCommitted(OnCommittedResponseWrapper.java:226) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.OnCommittedResponseWrapper.checkContentLength(OnCommittedResponseWrapper.java:216) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.OnCommittedResponseWrapper.access$200(OnCommittedResponseWrapper.java:37) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.OnCommittedResponseWrapper$SaveContextPrintWriter.write(OnCommittedResponseWrapper.java:281) [spring-session-1.2.0.RELEASE.jar:]
    at org.apache.jasper.runtime.JspWriterImpl.write(JspWriterImpl.java:260) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at java.io.PrintWriter.write(PrintWriter.java:426) [rt.jar:1.7.0_45]
    at org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:117) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.jasper.runtime.JspWriterImpl.write(JspWriterImpl.java:309) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at java.io.Writer.write(Writer.java:157) [rt.jar:1.7.0_45]
    at org.apache.jsp.WEB_002dINF.jsp.common.frameworkResource_jsp._jspService(frameworkResource_jsp.java:806)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:69) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:365) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:309) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:242) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:832) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:718) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:655) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_45]
    at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_45]
    at net.bull.javamelody.JspWrapper.invoke(JspWrapper.java:150) [javamelody-core-1.58.0.jar:1.58.0]
    at net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:286) [javamelody-core-1.58.0.jar:1.58.0]
    at com.sun.proxy.$Proxy222.include(Unknown Source)
    at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:940) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.jsp.WEB_002dINF.jsp.loginpage_jsp._jspService(loginpage_jsp.java:128)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:69) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:365) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:309) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:242) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:832) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:620) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:553) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:482) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.7.0_45]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) [rt.jar:1.7.0_45]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.7.0_45]
    at java.lang.reflect.Method.invoke(Method.java:606) [rt.jar:1.7.0_45]
    at net.bull.javamelody.JspWrapper.invoke(JspWrapper.java:150) [javamelody-core-1.58.0.jar:1.58.0]
    at net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:286) [javamelody-core-1.58.0.jar:1.58.0]
    at com.sun.proxy.$Proxy222.forward(Unknown Source)
    at org.springframework.web.servlet.view.InternalResourceView.renderMergedOutputModel(InternalResourceView.java:209) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:267) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1225) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1012) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:876) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:852) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:734) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837) [spring-webmvc-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:847) [jboss-servlet-api_3.0_spec-1.0.2.Final-redhat-1.jar:1.0.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:162) [javamelody-core-1.58.0.jar:1.58.0]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88) [spring-web-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:108) [spring-web-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:164) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:80) [spring-session-1.2.0.RELEASE.jar:]
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:344) [spring-web-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:261) [spring-web-4.0.2.RELEASE.jar:4.0.2.RELEASE]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214) [jbossweb-7.2.2.Final-redhat-1.jar:7.2.2.Final-redhat-1]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) [spring-security-web-3.2.4.RELEASE.jar:3.2.4.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.4.RELEASE.jar:3.2.4.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.4.RELEASE.jar:3.2.4.RELEASE]
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) [spring-security-web-3.2.4.RELEASE.jar:3.2.4.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) [spring-security-web-3.2.4.RELEASE.jar:3.2.4.RELEASE]
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) [spring-security-web-3.2.4.RELEASE.jar:3.2.4.RELEASE]

---

我通过实现自己的转换器实现了这一点，因为

org.springframework.session.jdbc.config.annotation.web.http.JdbcHttpSessionConfiguration

中的转换器似乎没有正确加载（代码中有一条关于这一点的说明）

我通过基于

JdbcHttpSessionConfiguration

中的内容创建自己的

ByteaConversionService

来保存数据

首先使用属性在xml配置中创建bean

<bean class="org.springframework.session.jdbc.config.annotation.web.http.JdbcHttpSessionConfiguration">
    <property name="springSessionConversionService">
        <bean class="com.mycompany.ByteaConversionService" />
    </property>
</bean>

---

这对我有用。（现在我正在努力解决如何使多个会话正常工作。）

您能分享一个重现此问题的示例吗？默认的

ConversionService

应该能够将

对象

转换为字节数组。您是否有机会为

转换服务使用自定义配置？
public class ByteaConversionService extends GenericConversionService {
    public ByteaConversionService() {
        addConverter(Object.class, byte[].class, new SerializingConverter());
        addConverter(byte[].class, Object.class, new DeserializingConverter());
    }
}