org.voovan.tools.json.JSONEncode Maven / Gradle / Ivy

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Voovan is a java framwork and it not depends on any third-party framework.
There is a newer version: 4.3.8
package org.voovan.tools.json;

import org.voovan.tools.TDateTime;
import org.voovan.tools.TString;
import org.voovan.tools.reflect.TReflect;

import java.lang.reflect.Array;
import java.math.BigDecimal;
import java.util.Collection;
import java.util.Date;
import java.util.List;
import java.util.Map;

/**
 * JSON打包类
 *
 * @author helyho
 * 
 * Voovan Framework.
 * WebSite: https://github.com/helyho/Voovan
 * Licence: Apache v2 License
 */
public class JSONEncode {

    /**
     * 分析自定义对象为JSON字符串
     *
     * @param object 自定义对象
     * @return JSON字符串
     * @throws ReflectiveOperationException
     */
    private static String complexObject(Object object, boolean allField) throws ReflectiveOperationException {
        return mapObject(TReflect.getMapfromObject(object, allField), allField);
    }

    /**
     * 分析Map对象为JSON字符串
     *
     * @param mapObject map对象
     * @return JSON字符串
     * @throws ReflectiveOperationException
     */
    private static String mapObject(Map mapObject, boolean allField) throws ReflectiveOperationException {
        String mapString = "{";
        StringBuilder contentStringBuilder = new StringBuilder();
        String ContentString = null;

        Object[] keys = mapObject.keySet().toArray();

        for (Object mapkey : keys) {
            Object key = fromObject(mapkey, allField);
            String Value = fromObject(mapObject.get(mapkey), allField);
            contentStringBuilder.append(key);
            contentStringBuilder.append(":");
            contentStringBuilder.append(Value);
            contentStringBuilder.append(",");
        }

        ContentString = contentStringBuilder.toString();
        if (!ContentString.trim().isEmpty()){
            ContentString = ContentString.substring(0, ContentString.length() - 1);
        }

        mapString = mapString + ContentString + "}";

        return mapString;
    }

    /**
     * 分析Array对象为JSON字符串
     *
     * @param arrayObject Array对象
     * @throws ReflectiveOperationException
     * @return JSON字符串
     */
    private static String arrayObject(Object[] arrayObject, boolean allField) throws ReflectiveOperationException {
        String arrayString = "[";
        String ContentString = "";
        StringBuilder ContentStringBuilder = new StringBuilder();

        for (Object object : arrayObject) {
            String Value = fromObject(object, allField);
            ContentStringBuilder.append(Value);
            ContentStringBuilder.append(",");
        }

        ContentString = ContentStringBuilder.toString();

        if (!ContentString.trim().isEmpty()) {
            ContentString = ContentString.substring(0, ContentString.length() - 1);
        }

        arrayString = arrayString + ContentString + "]";
        return arrayString;
    }

    /**
     * 分析Collection对象为JSON字符串
     *
     * @param collectionObject Collection 对象
     * @throws ReflectiveOperationException
     * @return JSON字符串
     */
    private static String CollectionObject(Collection collectionObject, boolean allField) throws ReflectiveOperationException {
        String arrayString = "[";
        String ContentString = "";
        StringBuilder ContentStringBuilder = new StringBuilder();

        for (Object object : collectionObject) {
            String Value = fromObject(object, allField);
            ContentStringBuilder.append(Value);
            ContentStringBuilder.append(",");
        }

        ContentString = ContentStringBuilder.toString();

        if (!ContentString.trim().isEmpty()) {
            ContentString = ContentString.substring(0, ContentString.length() - 1);
        }

        arrayString = arrayString + ContentString + "]";
        return arrayString;
    }

    /**
     * 将对象转换成JSON字符串
     *
     * @param object 要转换的对象
     * @return 类型:String 		对象对应的JSON字符串
     * @throws ReflectiveOperationException 反射异常
     */
    @SuppressWarnings("unchecked")
    public static String fromObject(Object object) throws ReflectiveOperationException {
        return fromObject(object, false);
    }

    /**
     * 将对象转换成JSON字符串
     *
     * @param object 要转换的对象
     * @param allField 是否处理所有属性
     * @return 类型:String 		对象对应的JSON字符串
     * @throws ReflectiveOperationException 反射异常
     */
    @SuppressWarnings("unchecked")
    public static String fromObject(Object object, boolean allField) throws ReflectiveOperationException {
        String value = null;

        if (object == null) {
            return "null";
        }

        Class clazz = object.getClass();

        if (object instanceof Class) {
            return ((Class)object).getCanonicalName();
        } else if (object instanceof BigDecimal) {
            if(BigDecimal.ZERO.compareTo((BigDecimal)object)==0){
                object = BigDecimal.ZERO;
            }

            value = ((BigDecimal) object).toPlainString();
        } else if (object instanceof Date) {
            value = "\"" + TDateTime.format(((Date)object), TDateTime.STANDER_DATETIME_TEMPLATE)+ "\"";;
        } else if (object instanceof Map) {
            Map mapObject = (Map) object;
            value = mapObject(mapObject, allField);
        } else if (object instanceof Collection) {
            Collection