/* | |
* Copyright 1999-2011 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.dubbo.common.serialize.support.json; | |
import java.io.BufferedReader; | |
import java.io.EOFException; | |
import java.io.IOException; | |
import java.io.InputStream; | |
import java.io.InputStreamReader; | |
import java.io.Reader; | |
import java.lang.reflect.Type; | |
import java.util.Map; | |
import com.alibaba.dubbo.common.json.JSON; | |
import com.alibaba.dubbo.common.json.ParseException; | |
import com.alibaba.dubbo.common.serialize.ObjectInput; | |
import com.alibaba.dubbo.common.utils.PojoUtils; | |
/** | |
* JsonObjectInput | |
* | |
* @author william.liangf | |
* @author ding.lid | |
*/ | |
public class JsonObjectInput implements ObjectInput { | |
private final BufferedReader reader; | |
public JsonObjectInput(InputStream in){ | |
this(new InputStreamReader(in)); | |
} | |
public JsonObjectInput(Reader reader){ | |
this.reader = new BufferedReader(reader); | |
} | |
public boolean readBool() throws IOException { | |
try { | |
return readObject(boolean.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public byte readByte() throws IOException { | |
try { | |
return readObject( byte.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public short readShort() throws IOException { | |
try { | |
return readObject(short.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public int readInt() throws IOException { | |
try { | |
return readObject(int.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public long readLong() throws IOException { | |
try { | |
return readObject(long.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public float readFloat() throws IOException { | |
try { | |
return readObject(float.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public double readDouble() throws IOException { | |
try { | |
return readObject(double.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public String readUTF() throws IOException { | |
try { | |
return readObject(String.class); | |
} catch (ClassNotFoundException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
public byte[] readBytes() throws IOException { | |
return readLine().getBytes(); | |
} | |
public Object readObject() throws IOException, ClassNotFoundException { | |
try { | |
String json = readLine(); | |
if (json.startsWith("{")) { | |
return JSON.parse(json, Map.class); | |
} else { | |
json = "{\"value\":" + json + "}"; | |
@SuppressWarnings("unchecked") | |
Map<String, Object> map = JSON.parse(json, Map.class); | |
return map.get("value"); | |
} | |
} catch (ParseException e) { | |
throw new IOException(e.getMessage()); | |
} | |
} | |
@SuppressWarnings("unchecked") | |
public <T> T readObject(Class<T> cls) throws IOException, ClassNotFoundException { | |
Object value = readObject(); | |
return (T) PojoUtils.realize(value, cls); | |
/*try { | |
return JSON.parse(readLine(), cls); | |
} catch (ParseException e) { | |
throw new IOException(e.getMessage()); | |
}*/ | |
} | |
@SuppressWarnings("unchecked") | |
public <T> T readObject(Class<T> cls, Type type) throws IOException,ClassNotFoundException | |
{ | |
Object value = readObject(); | |
return (T) PojoUtils.realize(value, cls, type); | |
} | |
private String readLine() throws IOException, EOFException { | |
String line = reader.readLine(); | |
if(line == null || line.trim().length() == 0) throw new EOFException(); | |
return line; | |
} | |
} |