将异常转换为JSON

从理论上讲，您还可以遍历堆栈跟踪中的元素并生成如下内容：

{ "NullPointerException" :    { "Exception in thread "main" java.lang.NullPointerException",        {"Book.java:16" : "com.example.myproject.Book.getTitle",          "Author.java:25" : "at com.example.myproject.Author.getBookTitles",          "Bootstrap.java:14" : "at com.example.myproject.Bootstrap.main()"        }    },  "Caused By" :    { "Exception in thread "main" java.lang.NullPointerException",        {"Book.java:16" : "com.example.myproject.Book.getTitle",          "Author.java:25" : "at com.example.myproject.Author.getBookTitles",          "Bootstrap.java:14" : "at com.example.myproject.Bootstrap.main()"        }    }}

您可以像这样遍历异常：

catch (Exception cause) {    StackTraceElement elements[] = cause.getStackTrace();    for (int i = 0, n = elements.length; i < n; i++) {    System.err.println(elements[i].getFileName() + ":" + elements[i].getLineNumber()  + ">> " + elements[i].getMethodName() + "()");    }}