CXF之五（错误处理）

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。

 

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

 

 

@Provider
public 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;
	}

}

 

第二部：加载InvokeFaultExceptionMapper

 

<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 class="org.codehaus.jackson.jaxrs.JacksonJsonProvider"/>
            <bean class="com.pml.service.outer.InvokeFaultExceptionMapper"/>
        </jaxrs:providers>
	</jaxrs:server>

 

第三步：测试

   在你的接口中跑出异常试一试，结果如下

 

{"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}]}