Spring 整合 Flex （BlazeDS）无法从as对象 到 Java对象转换的异常：org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.util.Date' to required type 'java.sql.Timestamp' for property 'wfsj'; nested exception is java.lang.Ill

异常信息如下：

org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'java.util.Date' to required type 'java.sql.Timestamp' for property 'wfsj'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.util.Date] to required type [java.sql.Timestamp] for property 'wfsj': no matching editors or conversion strategy found
    at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:463)
    at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:494)
    at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1097)
    at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:882)
    at org.springframework.flex.core.io.SpringPropertyProxy.setValue(SpringPropertyProxy.java:182)
    at flex.messaging.io.amf.Amf3Input.readScriptObject(Amf3Input.java:438)
    at flex.messaging.io.amf.Amf3Input.readObjectValue(Amf3Input.java:152)
    at flex.messaging.io.amf.Amf3Input.readObject(Amf3Input.java:130)
    at flex.messaging.io.amf.Amf3Input.readArray(Amf3Input.java:358)
    …………
    at flex.messaging.io.amf.AmfMessageDeserializer.readObject(AmfMessageDeserializer.java:227)
    at flex.messaging.io.amf.AmfMessageDeserializer.readBody(AmfMessageDeserializer.java:206)
    at flex.messaging.io.amf.AmfMessageDeserializer.readMessage(AmfMessageDeserializer.java:126)
    at flex.messaging.endpoints.amf.SerializationFilter.invoke(SerializationFilter.java:145)
    at flex.messaging.endpoints.BaseHTTPEndpoint.service(BaseHTTPEndpoint.java:291)
    at flex.messaging.endpoints.AMFEndpoint$$EnhancerByCGLIB$$6f090fa2.service(<generated>)
    at org.springframework.flex.servlet.MessageBrokerHandlerAdapter.handle(MessageBrokerHandlerAdapter.java:109)
    …………
Caused by: java.lang.IllegalStateException: Cannot convert value of type [java.util.Date] to required type [java.sql.Timestamp] for property 'wfsj': no matching editors or conversion strategy found
    at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:264)
    at org.springframework.beans.BeanWrapperImpl.convertIfNecessary(BeanWrapperImpl.java:448)
    ... 59 more

 

看异常信息大概知道属性wfsj这个字段，不能完成java.util.Date 到 java.sql.Timestamp 日期时间戳的转换。后面还有提示， 没有找到匹配的conversion或editor。

conversion 在Spring中转换对象属性会用到，而editor和converter 以及formatter也是在转换对象（String –> Date, String –> Timestamp），从字符串到对象，从对象到字符串的时候会经常用到。

解决方法：

<bean id="customConfigProcessor" class="com.jp.tic.framework.flex.converter.CustomAmfConversionServiceConfigProcessor"/>

<flex:message-broker services-config-path="/WEB-INF/flex/services-config.xml">
    <flex:exception-translator ref="flexExceptionTranslator" />
    <flex:config-processor ref="configProcessor"/>
    <flex:config-processor ref="customConfigProcessor"/>
    <!--<flex:message-interceptor ref="flexMessageInterceptor" />
    <flex:message-interceptor ref="loginMessageInterceptor" />-->
</flex:message-broker>

为message-broker对象注入CustomAmfConversionServiceConfigProcessor对象，CustomAmfConversionServiceConfigProcessor是继承AbstractAmfConversionServiceConfigProcessor对象。

AbstractAmfConversionServiceConfigProcessor对象中提供了对各个类型转换serialization/deserialization的方法。

 

package com.jp.tic.framework.flex.converter;

import java.util.HashSet;
import java.util.Set;
import org.springframework.flex.core.io.AbstractAmfConversionServiceConfigProcessor;

/**
 * <b>function:</b> 自定义AMF转换服务
 * @author hoojo
 * @createDate 2013-7-17 下午01:35:12
 * @file CustomAmfConversionServiceConfigProcessor.java
 * @package com.jp.tic.framework.flex.converter
 * @project JTZHJK-Server
 * @blog http://blog.csdn.net/IBM_hoojo
 * @email hoojo_@126.com
 * @version 1.0
 */
public class CustomAmfConversionServiceConfigProcessor extends AbstractAmfConversionServiceConfigProcessor {

    private static Set<Class<?>> classes = new HashSet<Class<?>>();

    @Override
    protected Set<Class<?>> findTypesToRegister() {
        return classes;
    }
}

 

如果你还需要添加更多自己的转化服务，那么你需要给CustomAmfConversionServiceConfigProcessor 注入conversionService对象。

<!-- 添加配置类型转换器、转换服务 -->
    <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
         <property name="converters">
            <list>
                <bean class="com.jp.tic.framework.mvc.convert.StringToTimestampConverter"/>
                <bean class="com.jp.tic.framework.mvc.convert.DateToTimestampConverter"/>
            </list>
        </property>

        <property name="formatters">
            <list>
                <bean class="com.jp.tic.framework.mvc.formatter.SimpleDateTimeFormatAnnotationFormatterFactory"/>
                <bean class="com.jp.tic.framework.mvc.formatter.TimestampFormatterFactory"/>
            </list>
        </property>
    </bean>

 

 

<bean id="customConfigProcessor" class="com.jp.tic.framework.flex.converter.CustomAmfConversionServiceConfigProcessor">
    <property name="conversionService" ref="conversionService"/>
</bean>