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package cn.wisenergy.chnmuseum.party.common.util;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.charset.Charset;
import org.springframework.http.HttpInputMessage;
import org.springframework.http.HttpOutputMessage;
import org.springframework.http.converter.AbstractHttpMessageConverter;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.http.converter.HttpMessageNotWritableException;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
public class FastJsonHttpMessageConverter extends AbstractHttpMessageConverter<Object> {
public final static Charset UTF8 = Charset.forName("UTF-8");
private Charset charset = UTF8;
private SerializerFeature[] serializerFeature;
@Override
protected boolean supports(Class<?> clazz) {
return true;
}
@Override
protected Object readInternal(Class<? extends Object> clazz, HttpInputMessage inputMessage)
throws IOException, HttpMessageNotReadableException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
InputStream in = inputMessage.getBody();
byte[] buf = new byte[1024];
for (;;) {
int len = in.read(buf);
if (len == -1) {
break;
}
if (len > 0) {
baos.write(buf, 0, len);
}
}
byte[] bytes = baos.toByteArray();
if (charset == UTF8) {
return JSON.parseObject(bytes, clazz);
} else {
return JSON.parseObject(bytes, 0, bytes.length, charset.newDecoder(), clazz);
}
}
@Override
protected void writeInternal(Object obj, HttpOutputMessage outputMessage)
throws IOException, HttpMessageNotWritableException {
OutputStream out = outputMessage.getBody();
byte[] bytes;
if (charset == UTF8) {
if (serializerFeature != null) {
bytes = JSON.toJSONBytes(obj, serializerFeature);
} else {
bytes = JSON.toJSONBytes(obj, SerializerFeature.WriteDateUseDateFormat);
}
} else {
String text;
if (serializerFeature != null) {
text = JSON.toJSONString(obj, serializerFeature);
} else {
text = JSON.toJSONString(obj, SerializerFeature.WriteDateUseDateFormat);
}
bytes = text.getBytes(charset);
}
out.write(bytes);
}
}