java.lang.NoSuchMethodException

怼烎@ 2022-05-27 09:26 60阅读 0赞

错误信息:

java.lang.NoSuchMethodException: cn.xxxxx.core.entity.DepartmentDO.setName

`getMethod,getDeclaredMethod。看了下说明大概的意思就是getMethod只能调用public声明的方法，而getDeclaredMethod基本可以调用任何类型声明的方法`

代码实现:

private List<DepartmentDO> convertDepartmentList(List<List<String>> list) \{  
List<String> titleList = list.get(0);  
List<DepartmentDO> departmentDOList = new ArrayList<>();  
for (int i = 1; i < list.size(); i++) \{  
List<String> proList = list.get(i);  
DepartmentDO department = new DepartmentDO();  
Class<?> clazz = department.getClass();  
for (int i1 = 0; i1 < proList.size(); i1++) \{  
String str = DepartmentEnum.getPro(titleList.get(i1));  
String methodName = "set" + str.substring(0, 1).toUpperCase() + str.substring(1, str.length());  
  
  
try \{  
Method method = clazz.getDeclaredMethod(methodName, String.class);  
 method.invoke(department, proList.get(i1));  
\} catch (NoSuchMethodException e) \{  
e.printStackTrace();  
\} catch (IllegalAccessException e) \{  
e.printStackTrace();  
\} catch (InvocationTargetException e) \{  
e.printStackTrace();  
\}  
\}  
departmentDOList.add(department);  
  
  
\}  
return departmentDOList;  
\}

解决:

method.invoke

需要invoke方法为反射方法添加参数!

java.lang.NoSuchMethodException

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