套接字读取IOException未被捕获

Question

在grails中，套接字读取失败还是ioexception被捕获？即使我已经将错误部分包装在try-catch块中，也会触发以下错误。

ERROR 2021-03-28 08:34:10,170 [ajp-bio-8109-exec-39783] errors.GrailsExceptionResolver: IOException occurred when processing request: [POST] /race/results/
Socket read failed. Stacktrace follows:
java.io.IOException: Socket read failed
at java.io.FilterInputStream.read(FilterInputStream.java:133)
at java.io.PushbackInputStream.read(PushbackInputStream.java:186)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.Reader.read(Reader.java:140)
at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1485)
at org.apache.commons.io.IOUtils.copy(IOUtils.java:1461)
at org.apache.commons.io.IOUtils.copy(IOUtils.java:1436)
at org.apache.commons.io.IOUtils.toString(IOUtils.java:585)
at grails.converters.JSON.parse(JSON.java:312)
at grails.converters.JSON.parse(JSON.java:347)

在抛出错误的地方，我已经将它封装在try-catch块中，如下所示。

def results(){

def results

try {
results = request.JSON

} catch (IOException e1) {
log.error "ERROR WHILE request.json in /results******************************************************************"
render contentType: "text/json", text: '{"status":"fail"}'
return
}

此时抛出错误

results = request.JSON

我很欣赏任何见解。我使用的是Grails 2.2。

谢谢！

更新：

这是完整的堆叠比赛。谢谢

ERROR 2021-03-28 08:34:10,170 [ajp-bio-8109-exec-39783] errors.GrailsExceptionResolver: IOException occurred when processing request: [POST] /race/results/
Socket read failed. Stacktrace follows:
java.io.IOException: Socket read failed
at java.io.FilterInputStream.read(FilterInputStream.java:133)
at java.io.PushbackInputStream.read(PushbackInputStream.java:186)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.Reader.read(Reader.java:140)
at org.apache.commons.io.IOUtils.copyLarge(IOUtils.java:1485)
at org.apache.commons.io.IOUtils.copy(IOUtils.java:1461)
at org.apache.commons.io.IOUtils.copy(IOUtils.java:1436)
at org.apache.commons.io.IOUtils.toString(IOUtils.java:585)
at grails.converters.JSON.parse(JSON.java:312)
at grails.converters.JSON.parse(JSON.java:347)
at race.results(VirtualRaceController.groovy:2011)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

Answer 1

您可能会发现它抛出的是ConverterException，而不是IOException。这是代码：

class ConvertersExtension {
static getJSON(HttpServletRequest request) {
JSON.parse(request)
}
}
public class JSON  {
public static Object parse(HttpServletRequest request) throws ConverterException {
// blah blah
try {
/// blah blah
}
catch (IOException e) {
throw new ConverterException("Error parsing JSON", e);
}
}  
}

如果您正在使用IDE，右键单击有问题的API并选择"；GO To声明"；，或者IDE中的任何模棱两可的东西，直到你追踪你的路，看看是什么扔了什么。