java编程之Exception handlers should preserve the original exception

不兼容代码例子：

// Noncompliant - exception is lost
try { /* ... */ } catch (Exception e) { LOGGER.info("context"); }

// Noncompliant - exception is lost (only message is preserved)
try { /* ... */ } catch (Exception e) { LOGGER.info(e.getMessage()); }

// Noncompliant - exception is lost
try { /* ... */ } catch (Exception e) { throw new RuntimeException("context"); }

兼容代码例子：

try { /* ... */ } catch (Exception e) { LOGGER.info(e); }

try { /* ... */ } catch (Exception e) { throw new RuntimeException(e); }

try {
/* ... */
} catch (RuntimeException e) {
doSomething();
throw e;
} catch (Exception e) {
// Conversion into unchecked exception is also allowed
throw new RuntimeException(e);
 }

e.getMessage获得的异常信息远不如直接通过logger.log(Level.SEVERE,"",异常对象)这个方式记录的信息全，强烈建议采用后者
来记录异常信息。