ylbtech-Java-Class-I：com.alibaba.fastjson.JSONObject

 

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1.1、

import com.alibaba.fastjson.JSON;

import com.alibaba.fastjson.JSONObject;

1.2、

String objJSON = "{'key':'value'}";

JSONObject responseObj = JSON.parseObject(objJSON);

String key = responseObj.getString("key");

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/* * Copyright 1999-2017 Alibaba Group. * * 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. */package com.alibaba.fastjson;import static com.alibaba.fastjson.util.TypeUtils.castToBigDecimal;import static com.alibaba.fastjson.util.TypeUtils.castToBigInteger;import static com.alibaba.fastjson.util.TypeUtils.castToBoolean;import static com.alibaba.fastjson.util.TypeUtils.castToByte;import static com.alibaba.fastjson.util.TypeUtils.castToBytes;import static com.alibaba.fastjson.util.TypeUtils.castToDate;import static com.alibaba.fastjson.util.TypeUtils.castToDouble;import static com.alibaba.fastjson.util.TypeUtils.castToFloat;import static com.alibaba.fastjson.util.TypeUtils.castToInt;import static com.alibaba.fastjson.util.TypeUtils.castToLong;import static com.alibaba.fastjson.util.TypeUtils.castToShort;import static com.alibaba.fastjson.util.TypeUtils.castToSqlDate;import static com.alibaba.fastjson.util.TypeUtils.castToTimestamp;import java.io.*;import java.lang.reflect.Field;import java.lang.reflect.InvocationHandler;import java.lang.reflect.Method;import java.lang.reflect.Type;import java.math.BigDecimal;import java.math.BigInteger;import java.util.Collection;import java.util.Date;import java.util.HashMap;import java.util.LinkedHashMap;import java.util.Map;import java.util.Set;import com.alibaba.fastjson.annotation.JSONField;import com.alibaba.fastjson.parser.ParserConfig;import com.alibaba.fastjson.util.TypeUtils;/** * @author wenshao[szujobs@hotmail.com] */public class JSONObject extends JSON implements Map
      
       , Cloneable, Serializable, InvocationHandler {    private static final long         serialVersionUID         = 1L;    private static final int          DEFAULT_INITIAL_CAPACITY = 16;    private final Map
       
         map;    public JSONObject(){        this(DEFAULT_INITIAL_CAPACITY, false);    }    public JSONObject(Map
        
          map){        if (map == null) {            throw new IllegalArgumentException("map is null.");        }        this.map = map;    }    public JSONObject(boolean ordered){        this(DEFAULT_INITIAL_CAPACITY, ordered);    }    public JSONObject(int initialCapacity){        this(initialCapacity, false);    }    public JSONObject(int initialCapacity, boolean ordered){        if (ordered) {            map = new LinkedHashMap
         
          (initialCapacity);        } else {            map = new HashMap
          
           (initialCapacity);        }    }    public int size() {        return map.size();    }    public boolean isEmpty() {        return map.isEmpty();    }    public boolean containsKey(Object key) {        return map.containsKey(key);    }    public boolean containsValue(Object value) {        return map.containsValue(value);    }    public Object get(Object key) {        Object val = map.get(key);        if (val == null && key instanceof Number) {            val = map.get(key.toString());        }        return val;    }    public JSONObject getJSONObject(String key) {        Object value = map.get(key);        if (value instanceof JSONObject) {            return (JSONObject) value;        }        if (value instanceof String) {            return JSON.parseObject((String) value);        }        return (JSONObject) toJSON(value);    }    public JSONArray getJSONArray(String key) {        Object value = map.get(key);        if (value instanceof JSONArray) {            return (JSONArray) value;        }        if (value instanceof String) {            return (JSONArray) JSON.parse((String) value);        }        return (JSONArray) toJSON(value);    }    public 
           
             T getObject(String key, Class
            
              clazz) { Object obj = map.get(key); return TypeUtils.castToJavaBean(obj, clazz); } public 
             
               T getObject(String key, Type type) { Object obj = map.get(key); return TypeUtils.cast(obj, type, ParserConfig.getGlobalInstance()); } public 
              
                T getObject(String key, TypeReference typeReference) { Object obj = map.get(key); if (typeReference == null) { return (T) obj; } return TypeUtils.cast(obj, typeReference.getType(), ParserConfig.getGlobalInstance()); } public Boolean getBoolean(String key) { Object value = get(key); if (value == null) { return null; } return castToBoolean(value); } public byte[] getBytes(String key) { Object value = get(key); if (value == null) { return null; } return castToBytes(value); } public boolean getBooleanValue(String key) { Object value = get(key); Boolean booleanVal = castToBoolean(value); if (booleanVal == null) { return false; } return booleanVal.booleanValue(); } public Byte getByte(String key) { Object value = get(key); return castToByte(value); } public byte getByteValue(String key) { Object value = get(key); Byte byteVal = castToByte(value); if (byteVal == null) { return 0; } return byteVal.byteValue(); } public Short getShort(String key) { Object value = get(key); return castToShort(value); } public short getShortValue(String key) { Object value = get(key); Short shortVal = castToShort(value); if (shortVal == null) { return 0; } return shortVal.shortValue(); } public Integer getInteger(String key) { Object value = get(key); return castToInt(value); } public int getIntValue(String key) { Object value = get(key); Integer intVal = castToInt(value); if (intVal == null) { return 0; } return intVal.intValue(); } public Long getLong(String key) { Object value = get(key); return castToLong(value); } public long getLongValue(String key) { Object value = get(key); Long longVal = castToLong(value); if (longVal == null) { return 0L; } return longVal.longValue(); } public Float getFloat(String key) { Object value = get(key); return castToFloat(value); } public float getFloatValue(String key) { Object value = get(key); Float floatValue = castToFloat(value); if (floatValue == null) { return 0F; } return floatValue.floatValue(); } public Double getDouble(String key) { Object value = get(key); return castToDouble(value); } public double getDoubleValue(String key) { Object value = get(key); Double doubleValue = castToDouble(value); if (doubleValue == null) { return 0D; } return doubleValue.doubleValue(); } public BigDecimal getBigDecimal(String key) { Object value = get(key); return castToBigDecimal(value); } public BigInteger getBigInteger(String key) { Object value = get(key); return castToBigInteger(value); } public String getString(String key) { Object value = get(key); if (value == null) { return null; } return value.toString(); } public Date getDate(String key) { Object value = get(key); return castToDate(value); } public java.sql.Date getSqlDate(String key) { Object value = get(key); return castToSqlDate(value); } public java.sql.Timestamp getTimestamp(String key) { Object value = get(key); return castToTimestamp(value); } public Object put(String key, Object value) { return map.put(key, value); } public JSONObject fluentPut(String key, Object value) { map.put(key, value); return this; } public void putAll(Map
                m) { map.putAll(m); } public JSONObject fluentPutAll(Map
                m) { map.putAll(m); return this; } public void clear() { map.clear(); } public JSONObject fluentClear() { map.clear(); return this; } public Object remove(Object key) { return map.remove(key); } public JSONObject fluentRemove(Object key) { map.remove(key); return this; } public Set
               
                 keySet() { return map.keySet(); } public Collection
                
               
              
             
            
           
          
         
        
       
      

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