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/**
 * Copyright 2018 jianggujin (www.jianggujin.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.jianggujin.http.response;

import java.io.IOException;
import java.io.InputStream;

import com.jianggujin.http.util.JDataUtils;

/**
 * XML响应
 * 
 * @author jianggujin
 *
 */
public class JXmlResponse extends JAbstractResponse {
    private Class target = null;
    private String charset;
    private static JXmlResolver defaultResolver = null;
    private JXmlResolver resolver = null;

    public JXmlResponse(Class target) {
        this.target = target;
    }

    public JXmlResponse(Class target, JXmlResolver resolver) {
        this.target = target;
        this.resolver = resolver;
    }

    public JXmlResponse(Class target, String charset) {
        this.charset = charset;
        this.target = target;
    }

    public JXmlResponse(Class target, String charset, JXmlResolver resolver) {
        this.charset = charset;
        this.target = target;
        this.resolver = resolver;
    }

    @Override
    protected void dealData(InputStream stream) throws IOException {
        String charset = (this.charset == null || this.charset.length() == 0)
                ? JDataUtils.getCharsetFromContentType(this.getHeader("Content-Type"))
                : this.charset;
        JXmlResolver resolver = this.resolver == null ? defaultResolver : this.resolver;
        this.data = resolver != null ? resolver.resolve(target, stream, charset) : null;
    }

    /**
     * 设置解析器
     * 
     * @param resolver
     */
    public static void setDefaultResolver(JXmlResolver resolver) {
        JXmlResponse.defaultResolver = resolver;
    }

    /**
     * XML解析器
     * 
     * @author jianggujin
     *
     */
    public static interface JXmlResolver {
        Object resolve(Class clazz, InputStream stream, String charset);
    }
}