ylbtech-Java-Class-I:com.alibaba.fastjson.JSONObject
1.返回顶部

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");
2、

2.返回顶部
 
3.返回顶部
 
4.返回顶部
1、
/*
* 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<String, Object>, Cloneable, Serializable, InvocationHandler { private static final long serialVersionUID = 1L;
private static final int DEFAULT_INITIAL_CAPACITY = 16; private final Map<String, Object> map; public JSONObject(){
this(DEFAULT_INITIAL_CAPACITY, false);
} public JSONObject(Map<String, Object> 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<String, Object>(initialCapacity);
} else {
map = new HashMap<String, Object>(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> T getObject(String key, Class<T> clazz) {
Object obj = map.get(key);
return TypeUtils.castToJavaBean(obj, clazz);
} public <T> T getObject(String key, Type type) {
Object obj = map.get(key);
return TypeUtils.cast(obj, type, ParserConfig.getGlobalInstance());
} public <T> 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<? extends String, ? extends Object> m) {
map.putAll(m);
} public JSONObject fluentPutAll(Map<? extends String, ? extends Object> 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<String> keySet() {
return map.keySet();
} public Collection<Object> values() {
return map.values();
} public Set<Map.Entry<String, Object>> entrySet() {
return map.entrySet();
} @Override
public Object clone() {
return new JSONObject(map instanceof LinkedHashMap //
? new LinkedHashMap<String, Object>(map) //
: new HashMap<String, Object>(map)
);
} public boolean equals(Object obj) {
return this.map.equals(obj);
} public int hashCode() {
return this.map.hashCode();
} public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
Class<?>[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length == 1) {
if (method.getName().equals("equals")) {
return this.equals(args[0]);
} Class<?> returnType = method.getReturnType();
if (returnType != void.class) {
throw new JSONException("illegal setter");
} String name = null;
JSONField annotation = method.getAnnotation(JSONField.class);
if (annotation != null) {
if (annotation.name().length() != 0) {
name = annotation.name();
}
} if (name == null) {
name = method.getName(); if (!name.startsWith("set")) {
throw new JSONException("illegal setter");
} name = name.substring(3);
if (name.length() == 0) {
throw new JSONException("illegal setter");
}
name = Character.toLowerCase(name.charAt(0)) + name.substring(1);
} map.put(name, args[0]);
return null;
} if (parameterTypes.length == 0) {
Class<?> returnType = method.getReturnType();
if (returnType == void.class) {
throw new JSONException("illegal getter");
} String name = null;
JSONField annotation = method.getAnnotation(JSONField.class);
if (annotation != null) {
if (annotation.name().length() != 0) {
name = annotation.name();
}
} if (name == null) {
name = method.getName();
if (name.startsWith("get")) {
name = name.substring(3);
if (name.length() == 0) {
throw new JSONException("illegal getter");
}
name = Character.toLowerCase(name.charAt(0)) + name.substring(1);
} else if (name.startsWith("is")) {
name = name.substring(2);
if (name.length() == 0) {
throw new JSONException("illegal getter");
}
name = Character.toLowerCase(name.charAt(0)) + name.substring(1);
} else if (name.startsWith("hashCode")) {
return this.hashCode();
} else if (name.startsWith("toString")) {
return this.toString();
} else {
throw new JSONException("illegal getter");
}
} Object value = map.get(name);
return TypeUtils.cast(value, method.getGenericReturnType(), ParserConfig.getGlobalInstance());
} throw new UnsupportedOperationException(method.toGenericString());
} public Map<String, Object> getInnerMap() {
return this.map;
} private void readObject(final java.io.ObjectInputStream in) throws IOException, ClassNotFoundException {
SecureObjectInputStream.ensureFields();
if (SecureObjectInputStream.fields != null && !SecureObjectInputStream.fields_error) {
ObjectInputStream secIn = new SecureObjectInputStream(in);
try {
secIn.defaultReadObject();
return;
} catch (java.io.NotActiveException e) {
// skip
}
} in.defaultReadObject();
for (Entry entry : map.entrySet()) {
final Object key = entry.getKey();
if (key != null) {
ParserConfig.global.checkAutoType(key.getClass());
} final Object value = entry.getValue();
if (value != null) {
ParserConfig.global.checkAutoType(value.getClass());
}
}
} static class SecureObjectInputStream extends ObjectInputStream {
static Field[] fields;
static volatile boolean fields_error; static void ensureFields() {
if (fields == null && !fields_error) {
try {
final Field[] declaredFields = ObjectInputStream.class.getDeclaredFields();
String[] fieldnames = new String[]{"bin", "passHandle", "handles", "curContext"};
Field[] array = new Field[fieldnames.length];
for (int i = 0; i < fieldnames.length; i++) {
Field field = TypeUtils
.getField(ObjectInputStream.class
, fieldnames[i]
, declaredFields
);
field.setAccessible(true);
array[i] = field;
}
fields = array;
} catch (Throwable error) {
fields_error = true;
}
}
} public SecureObjectInputStream(ObjectInputStream in) throws IOException {
super(in);
try {
for (int i = 0; i < fields.length; i++) {
final Field field = fields[i];
final Object value = field.get(in);
field.set(this, value);
}
} catch (IllegalAccessException e) {
fields_error = true;
}
} protected Class<?> resolveClass(ObjectStreamClass desc)
throws IOException, ClassNotFoundException {
String name = desc.getName();
if (name.length() > 2) {
int index = name.lastIndexOf('[');
if (index != -1) {
name = name.substring(index + 1);
}
if (name.length() > 2 && name.charAt(0) == 'L' && name.charAt(name.length() - 1) == ';') {
name = name.substring(1, name.length() - 1);
}
ParserConfig.global.checkAutoType(name, null);
}
return super.resolveClass(desc);
} protected Class<?> resolveProxyClass(String[] interfaces)
throws IOException, ClassNotFoundException {
for (String interfacename : interfaces) {
//检查是否处于黑名单
ParserConfig.global.checkAutoType(interfacename, null);
}
return super.resolveProxyClass(interfaces);
} //Hack:默认构造方法会调用这个方法,重写此方法使用反射还原部分关键属性
protected void readStreamHeader() throws IOException, StreamCorruptedException { }
}
}
2、
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作者:ylbtech
出处:http://ylbtech.cnblogs.com/
本文版权归作者和博客园共有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接,否则保留追究法律责任的权利。

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