From 1fa96a66c8ecb7dbaaba00ddd0ff22980e88b4b1 Mon Sep 17 00:00:00 2001
From: fuhouyin <fuhouyin1230@126.com>
Date: Wed, 8 Feb 2023 17:24:00 +0800
Subject: [PATCH] :tada: new mod

---
 src/main/java/utils/HandlePage.java      | 21 ++++++
 src/main/java/utils/MethodGetAndSet.java | 94 ++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 src/main/java/utils/HandlePage.java
 create mode 100644 src/main/java/utils/MethodGetAndSet.java

diff --git a/src/main/java/utils/HandlePage.java b/src/main/java/utils/HandlePage.java
new file mode 100644
index 0000000..7d2a010
--- /dev/null
+++ b/src/main/java/utils/HandlePage.java
@@ -0,0 +1,21 @@
+package utils;
+
+import java.util.List;
+
+/**
+ * @author fuhouyin
+ * @time 2023/2/1 15:07
+ */
+public class HandlePage {
+
+    /**分页  start = (page - 1) * size, end = page * size*/
+    private <T> List<T> handlePage(List<T> source, int start, int end){
+        int total = source.size();
+//        end = end > total ? total : end;
+        end = Math.min(end, total);
+        if (end <= start) {
+            return null;
+        }
+        return source.subList(start,end);
+    }
+}
diff --git a/src/main/java/utils/MethodGetAndSet.java b/src/main/java/utils/MethodGetAndSet.java
new file mode 100644
index 0000000..1dee900
--- /dev/null
+++ b/src/main/java/utils/MethodGetAndSet.java
@@ -0,0 +1,94 @@
+package utils;
+
+import java.lang.reflect.Method;
+import java.math.BigDecimal;
+
+/**
+ * @author fuhouyin
+ * @time 2023/2/1 15:10
+ */
+public class MethodGetAndSet {
+
+    /**根据属性，获取get方法*/
+    private Object getGetMethod(Object ob , String name)throws Exception{
+        Method[] m = ob.getClass().getMethods();
+        for(int i = 0;i < m.length;i++){
+            if(("get"+name).toLowerCase().equals(m[i].getName().toLowerCase())){
+                return m[i].invoke(ob);
+            }
+        }
+        return null;
+    }
+
+    /**根据属性，拿到set方法，并把值set到对象中*/
+    private void setValue(Object obj,Class<?> clazz,String filedName,Class<?> typeClass,Object value){
+        filedName = removeLine(filedName);
+        String methodName = "set" + filedName.substring(0,1).toUpperCase()+filedName.substring(1);
+        try{
+            Method method =  clazz.getDeclaredMethod(methodName, new Class[]{typeClass});
+            method.invoke(obj, new Object[]{getClassTypeValue(typeClass, value)});
+        }catch(Exception ex){
+            ex.printStackTrace();
+        }
+    }
+
+    /**通过class类型获取获取对应类型的值*/
+    private Object getClassTypeValue(Class<?> typeClass, Object value){
+        if(typeClass == int.class  || value instanceof Integer){
+            if(null == value){
+                return 0;
+            }
+            return value;
+        }else if(typeClass == short.class){
+            if(null == value){
+                return 0;
+            }
+            return value;
+        }else if(typeClass == byte.class){
+            if(null == value){
+                return 0;
+            }
+            return value;
+        }else if(typeClass == double.class){
+            if(null == value){
+                return 0;
+            }
+            return value;
+        }else if(typeClass == long.class){
+            if(null == value){
+                return 0;
+            }
+            return value;
+        }else if(typeClass == String.class){
+            if(null == value){
+                return "";
+            }
+            return value;
+        }else if(typeClass == boolean.class){
+            if(null == value){
+                return true;
+            }
+            return value;
+        }else if(typeClass == BigDecimal.class){
+            if(null == value){
+                return new BigDecimal(0);
+            }
+            return new BigDecimal(value+"");
+        }else {
+            return typeClass.cast(value);
+        }
+    }
+
+    /**处理字符串  如：  abc_dex ---> abcDex*/
+    private String removeLine(String str){
+        if(null != str && str.contains("_")){
+            int i = str.indexOf("_");
+            char ch = str.charAt(i+1);
+            char newCh = (ch+"").substring(0, 1).toUpperCase().toCharArray()[0];
+            String newStr = str.replace(str.charAt(i+1), newCh);
+            String newStr2 = newStr.replace("_", "");
+            return newStr2;
+        }
+        return str;
+    }
+}