所以这就是我参与的计划中的输出:
java.lang.IllegalArgumentException: argument type mismatch
CreationDate
getCreationDate
setCreationDate
LastModifiedDate
getLastModifiedDate
setLastModifiedDate
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at Transform.transform(Transform.java:86)
at Experiment.main(Experiment.java:120)
java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at Transform.transform(Transform.java:86)
at Experiment.main(Experiment.java:120)
DeletionDate
getDeletionDate
setDeletionDate
调用它的代码:
for (Field f : databaseFields) {
String upperCamelCase = Character.toUpperCase(f.getName().charAt(0)) + f.getName().substring(1);
System.out.println(upperCamelCase);
String getMethodName = "get" + upperCamelCase;
System.out.println(getMethodName);
Method getMethod = null;
try {
getMethod = databaseClass.getDeclaredMethod(getMethodName);
} catch (NoSuchMethodException e) {
} catch (SecurityException e) { }
if (getMethod == null) {
getMethodName = "is" + upperCamelCase;
try {
getMethod = databaseClass.getDeclaredMethod(getMethodName);
} catch (NoSuchMethodException e) {
continue;
} catch (SecurityException e) {
continue;
}
}
String setMethodName = "set" + upperCamelCase;
System.out.println(setMethodName);
Method setMethod = null;
for (int i = 0; i < parameterTypes.length; i++) {
try {
setMethod = jsonClass.getDeclaredMethod(setMethodName, parameterTypes[i]);
} catch (NoSuchMethodException e) { }
}
if (setMethod == null) {
continue;
}
try {
setMethod.invoke(jsonObject, getMethod.invoke(databaseObject));
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
这是一个反射变换,显然我不能告诉它引发异常的get或set方法。我该如何解决这个问题?
答案 0 :(得分:3)
在Eclipse中,Console中的stderr和stdout的颜色不同。您还可以通过右键单击控制台窗口并选择“首选项”来隐藏其中一个。
在命令行中,您可以使用重定向>
和2>
将stderr或stdout发送到单独的文件。
答案 1 :(得分:2)
呼叫
System.out.flush();
每次println
调用后立即强制输出到控制台。