CXF之五（异常处理）

? ? ?在CXF中默认的异常处理是无法满足开发需求，经常需要把异常信息转换为JSON或者XML格式，返回给客户的，这样就只能自定义异常处理了。

? ? 在对外提供接口的时候，如果出现异常，一般会通过JSON或XML将异常码及异常信息反回给客户，这在CXF中也很容易实现。

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第一步：编写自己的异常处理类?InvokeFaultExceptionMapper?

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@Providerpublic class InvokeFaultExceptionMapper implements ExceptionMapper {public Response toResponse(Throwable ex) { StackTraceElement[] trace = new StackTraceElement[1];        trace[0] = ex.getStackTrace()[0];        ex.setStackTrace(trace);        ResponseBuilder rb = Response.status(Response.Status.INTERNAL_SERVER_ERROR);        rb.type("application/json;charset=UTF-8");        rb.entity(ex);        rb.language(Locale.SIMPLIFIED_CHINESE);        Response r = rb.build();        return r;}}

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第二部：加载InvokeFaultExceptionMapper

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<jaxrs:server id="expGateway" address="/expGateway"><jaxrs:inInterceptors>   <ref bean="inMessageInterceptor"/></jaxrs:inInterceptors><jaxrs:outInterceptors>    <ref bean="outMessageInterceptor"/></jaxrs:outInterceptors><jaxrs:serviceBeans><ref bean="expGatewayImpl" /></jaxrs:serviceBeans><jaxrs:extensionMappings><entry key="json" value="application/json" /><entry key="xml" value="application/xml" /></jaxrs:extensionMappings><jaxrs:languageMappings><entry key="en" value="en-gb" /></jaxrs:languageMappings><jaxrs:providers>            <bean name="code">{"operate":null,"errCode":0,"errSubCode":"err.001","cause":null,"message":"ID值异常！","localizedMessage":"ID值异常！","stackTrace":[{"className":"com.pml.service.outer.ExpGatewayImpl","fileName":"ExpGatewayImpl.java","lineNumber":59,"methodName":"getUser","nativeMethod":false}]}

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