Java Reflection Field Value Set setFieldValues(Object bean, Map valMap)

Description

Set all fields' value.

License

Apache License

Parameter

Parameter	Description
bean	a parameter
valMap	a parameter

Declaration

public static void setFieldValues(Object bean, Map<String, Object> valMap) 

Method Source Code

//package com.java2s;
/*//from   w  ww  .j a  va 2s . c  om
 * Copyright (C) 2013 The Open Source Project By Yunying.Zhang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * author:Yunying.Zhang
 * date:2013-09-27
 */

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Map.Entry;

public class Main {
    /**
     * Set all fields' value.
     * 
     * @param bean
     * @param valMap
     */
    public static void setFieldValues(Object bean, Map<String, Object> valMap) {
        Class<?> cls = bean.getClass();
        Map<String, Field> fieldMap = getFields(cls);
        Iterator<Entry<String, Object>> iterator = valMap.entrySet().iterator();
        while (iterator.hasNext()) {
            try {
                Field field = fieldMap.get(iterator.next().getKey());
                if (field == null) {
                    continue;
                }
                field.setAccessible(true);
                field.set(bean, valMap.get(field.getName()));
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        }
    }

    /**
     * Get all fields, contain superclass' fields.
     * @param cls
     * @return
     */
    public static Map<String, Field> getFields(Class<?> cls) {
        Map<String, Field> fieldMap = new HashMap<String, Field>();
        Class<?> superClass = cls.getSuperclass();
        if (superClass != null) {
            fieldMap.putAll(getFields(superClass));
        }
        Field[] fields = cls.getDeclaredFields();
        for (Field field : fields) {
            fieldMap.put(field.getName(), field);
        }
        return fieldMap;
    }
}

Related

1. setFieldValue(String name, Object instance, int value, Class cl)
2. setFieldValue(String name, String obfuscatedName, Class clazz, Object object, Object value)
3. setFieldvalue(T instance, E value, Field field)
4. setFieldValue_internal(Object bean, Field field, Object value)
5. setFieldValueForObject(Object object, String fieldName, Object value)
6. setFieldValueWithPath(Object object, String path, Object value)
7. setFieldValueWithSetterMethod(Object target, Object value, Class clazz, Field field)
8. setFieldValueX(Object target, String field, Object value)