java Object类型转Map

一时失言乱红尘 2023-09-27 08:37 151阅读 0赞

仅供参考

@Log4j  
public class ObjectToMap \{  
/\*简单Object转成map\*/  
public static Map<String,String> toMap(Object o)\{  
Map<String,String> map=new HashMap<String, String>();  
Field\[\] fields=o.getClass().getDeclaredFields();  
try \{  
for (int i=0;i<fields.length;i++) \{  
String name=fields\[i\].getName();  
Field field=o.getClass().getDeclaredField(name);  
field.setAccessible(true);  
if (null!=field)\{  
map.put(name,field.get(o).toString());  
\}  
\}  
\}catch(Exception e)\{  
log.error(e.getMessage(),e);  
\}  
return map;  
\}  
/\*复杂Object转成map\*/  
public static Map<String, Object> toObjectMap(Object object) \{  
Map<String, Object> map = new HashMap<String, Object>();  
toMap(object.getClass(), object, map);  
return map;  
\}  
private static void toMap(Class<> clazz, Object object, Map<String, Object> map) \{  
Method\[\] methods = clazz.getDeclaredMethods();  
if (methods != null && methods.length > 0) \{  
for (Method method : methods) \{  
String mname = method.getName();  
if (mname.startsWith(“get”) && method.getParameterTypes().length == 0) \{  
try \{  
String fieldName = mname.substring(3, 4).toLowerCase() + mname.substring(4);  
if (“serialVersionUID”.equals(fieldName)) \{  
continue;  
\} else if (“class”.equals(fieldName)) \{  
continue;  
\}  
Object fieldValue = method.invoke(object, null);  
if (fieldValue != null) \{  
map.put(fieldName, fieldValue);  
\}  
\} catch (IllegalAccessException e) \{  
log.info(e.getMessage(),e);

\} catch (InvocationTargetException e) \{  
log.info(e.getMessage(),e);  
\} catch (SecurityException e) \{  
log.error(e.getMessage(),e);  
\}  
\}  
\}  
\}  
if (clazz.getSuperclass() != null) \{  
toMap(clazz.getSuperclass(), object, map);  
\}  
\}

public static void main(String\[\] args)throws Exception \{  
Tests tests=new Tests(10,“zhangsan”);  
ObjectToMap om= new ObjectToMap();  
Map<String,String> map= om.toMap(tests);  
System.out.println(map.toString());  
Map<String,Object> omap= om.toObjectMap(tests);  
System.out.println(omap.toString());  
\}

\}  
class Tests\{  
private int age;  
private String name;

public Tests(int age,String name) \{  
this.age=age;  
this.name=name;  
\}  
public int getAge() \{  
return age;  
\}

public void setAge(int age) \{  
this.age = age;  
\}

public String getName() \{  
return name;  
\}

public void setName(String name) \{  
this.name = name;  
\}  
\}