com.ifengxue.http.parser.CodecHttpParser Maven / Gradle / Ivy

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Use this tool to quickly create com.ifengxue.http client. Currently support get,post,put and patch request. Request body support url-encoded, form-data, json, Response body support json, text, stream.

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/*
 * Copyright 2019 https://www.ifengxue.com
 *
 * 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.ifengxue.http.parser;

import com.ifengxue.http.HttpClientException;
import com.ifengxue.http.codec.Codec;
import com.ifengxue.http.contract.HttpResponse;
import com.ifengxue.http.util.TypeUtil;
import java.io.IOException;
import java.lang.reflect.Type;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.nio.charset.Charset;
import org.apache.commons.lang3.StringUtils;

/**
 * codec http parser
 */
public class CodecHttpParser implements HttpParser {

  protected final Codec codec;

  public CodecHttpParser(Codec codec) {
    this.codec = codec;
  }

  @Override
  @SuppressWarnings("unchecked")
  public  T parse(HttpResponse response, Charset charset, Type type) throws HttpClientException, IOException {
    try {
      if (TypeUtil.isVoidType(type)) {
        return null;
      }
      String string = response.getContent(charset);
      if (StringUtils.isBlank(string)) {
        return null;
      }
      if (TypeUtil.isTypeOf(type, String.class)) {
        return (T) string;
      }
      if (TypeUtil.isTypeOf(type, BigDecimal.class)) {
        return (T) new BigDecimal(string);
      }
      if (TypeUtil.isTypeOf(type, BigInteger.class)) {
        return (T) new BigInteger(string);
      }
      if (TypeUtil.isPrimitiveType(type)) {
        return TypeUtil.resolvePrimitiveTypeValue(string, TypeUtil.findActualType(type));
      }
      return codec.decode(string, TypeUtil.findActualType(type));
    } catch (IOException | HttpClientException e) {
      throw e;
    } catch (Exception e) {
      throw new HttpClientException(e);
    } finally {
      try {
        response.close();
      } catch (IOException e) {
        // ignore
      }
    }
  }
}