Spring Exception Handler返回部分响应-可能是错误?

时间:2018-10-16 11:42:39

标签: spring spring-mvc spring-boot jackson

我正在使用Spring Boot 2.0.4构建REST接口。 我使用ExceptionHandler处理错误。

问题:

当序列化过程中引发异常时,杰克逊会抛出JsonMappingException。我使用默认异常处理程序(捕获所有异常)来处理此异常。

@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
@ResponseBody
@ExceptionHandler(Throwable.class)
public String handleThrowable(final Throwable throwable) {
    return "SERVER ERROR";
}

现在,当我返回一大堆对象时,我的行为很奇怪,由于RuntimeException而失败,我没有得到500的回信。但是我得到一个200,其中包含第一个序列化的对象,然后是错误消息。

示例:

我准备了一个完整的问题示例: https://github.com/stefan0001/spring-exception-test/tree/master/src/main/java/test

呼叫时:

GET http://localhost:8080/test

预期结果:

状态:500 正文:SERVER ERROR

实际结果:

状态:200 身体:

[{"name":"0","throwException":false,"foo":"bar"},{"name":"1","throwException":false,"foo":"bar"},{"name":"2","throwException":false,"foo":"bar"},{"name":"3","throwException":false,"foo":"bar"},{"name":"4","throwException":false,"foo":"bar"},{"name":"5","throwException":false,"foo":"bar"},{"name":"6","throwException":false,"foo":"bar"},{"name":"7","throwException":false,"foo":"bar"},{"name":"8","throwException":false,"foo":"bar"},{"name":"9","throwException":false,"foo":"bar"},{"name":"10","throwException":false,"foo":"bar"},{"name":"11","throwException":false,"foo":"bar"},{"name":"12","throwException":false,"foo":"bar"},{"name":"13","throwException":false,"foo":"bar"},{"name":"14","throwException":false,"foo":"bar"},{"name":"15","throwException":false,"foo":"bar"},{"name":"16","throwException":false,"foo":"bar"},{"name":"17","throwException":false,"foo":"bar"},{"name":"18","throwException":false,"foo":"bar"},{"name":"19","throwException":false,"foo":"bar"},{"name":"20","throwException":false,"foo":"bar"},{"name":"21","throwException":false,"foo":"bar"},{"name":"22","throwException":false,"foo":"bar"},{"name":"23","throwException":false,"foo":"bar"},{"name":"24","throwException":false,"foo":"bar"},{"name":"25","throwException":false,"foo":"bar"},{"name":"26","throwException":false,"foo":"bar"},{"name":"27","throwException":false,"foo":"bar"},{"name":"28","throwException":false,"foo":"bar"},{"name":"29","throwException":false,"foo":"bar"},{"name":"30","throwException":false,"foo":"bar"},{"name":"31","throwException":false,"foo":"bar"},{"name":"32","throwException":false,"foo":"bar"},{"name":"33","throwException":false,"foo":"bar"},{"name":"34","throwException":false,"foo":"bar"},{"name":"35","throwException":false,"foo":"bar"},{"name":"36","throwException":false,"foo":"bar"},{"name":"37","throwException":false,"foo":"bar"},{"name":"38","throwException":false,"foo":"bar"},{"name":"39","throwException":false,"foo":"bar"},{"name":"40","throwException":false,"foo":"bar"},{"name":"41","throwException":false,"foo":"bar"},{"name":"42","throwException":false,"foo":"bar"},{"name":"43","throwException":false,"foo":"bar"},{"name":"44","throwException":false,"foo":"bar"},{"name":"45","throwException":false,"foo":"bar"},{"name":"46","throwException":false,"foo":"bar"},{"name":"47","throwException":false,"foo":"bar"},{"name":"48","throwException":false,"foo":"bar"},{"name":"49","throwException":false,"foo":"bar"},{"name":"50","throwException":false,"foo":"bar"},{"name":"51","throwException":false,"foo":"bar"},{"name":"52","throwException":false,"foo":"bar"},{"name":"53","throwException":false,"foo":"bar"},{"name":"54","throwException":false,"foo":"bar"},{"name":"55","throwException":false,"foo":"bar"},{"name":"56","throwException":false,"foo":"bar"},{"name":"57","throwException":false,"foo":"bar"},{"name":"58","throwException":false,"foo":"bar"},{"name":"59","throwException":false,"foo":"bar"},{"name":"60","throwException":false,"foo":"bar"},{"name":"61","throwException":false,"foo":"bar"},{"name":"62","throwException":false,"foo":"bar"},{"name":"63","throwException":false,"foo":"bar"},{"name":"64","throwException":false,"foo":"bar"},{"name":"65","throwException":false,"foo":"bar"},{"name":"66","throwException":false,"foo":"bar"},{"name":"67","throwException":false,"foo":"bar"},{"name":"68","throwException":false,"foo":"bar"},{"name":"69","throwException":false,"foo":"bar"},{"name":"70","throwException":false,"foo":"bar"},{"name":"71","throwException":false,"foo":"bar"},{"name":"72","throwException":false,"foo":"bar"},{"name":"73","throwException":false,"foo":"bar"},{"name":"74","throwException":false,"foo":"bar"},{"name":"75","throwException":false,"foo":"bar"},{"name":"76","throwException":false,"foo":"bar"},{"name":"77","throwException":false,"foo":"bar"},{"name":"78","throwException":false,"foo":"bar"},{"name":"79","throwException":false,"foo":"bar"},{"name":"80","throwException":false,"foo":"bar"},{"name":"81","throwException":false,"foo":"bar"},{"name":"82","throwException":false,"foo":"bar"},{"name":"83","throwException":false,"foo":"bar"},{"name":"84","throwException":false,"foo":"bar"},{"name":"85","throwException":false,"foo":"bar"},{"name":"86","throwException":false,"foo":"bar"},{"name":"87","throwException":false,"foo":"bar"},{"name":"88","throwException":false,"foo":"bar"},{"name":"89","throwException":false,"foo":"bar"},{"name":"90","throwException":false,"foo":"bar"},{"name":"91","throwException":false,"foo":"bar"},{"name":"92","throwException":false,"foo":"bar"},{"name":"93","throwException":false,"foo":"bar"},{"name":"94","throwException":false,"foo":"bar"},{"name":"95","throwException":false,"foo":"bar"},{"name":"96","throwException":false,"foo":"bar"},{"name":"97","throwException":false,"foo":"bar"},{"name":"98","throwException":false,"foo":"bar"},{"name":"99","throwException":false,"foo":"bar"},{"name":"100","throwException":false,"foo":"bar"},{"name":"101","throwException":false,"foo":"bar"},{"name":"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ERROR

查看响应正文末尾的SERVER ERROR

我不知道这是错误还是故意的。 看起来响应已经写好了或类似的东西...

参考文献:

SPRING JIRA ISSUE

GITHUB EXAMPLE

1 个答案:

答案 0 :(得分:1)

一旦提交了HTTP响应,就无法更改HTTP状态或标头。那时,该响应可能位于网络缓冲区中,甚至已经发送给客户端。那时,还没有办法收回它。

因此,在这种情况下,Spring无法更改响应。

从客户端的角度来看,如果响应不完整(例如,其长度反映了Content-Length标头),则为then the RFC says the client should close the connection and consider the response incomplete