/*
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* Copyright [2020-2030] [https://www.stylefeng.cn]
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
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*
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* 1.请不要删除和修改根目录下的LICENSE文件。
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* 2.请不要删除和修改Guns源码头部的版权声明。
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* 3.请保留源码和相关描述文件的项目出处，作者声明等。
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* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
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* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
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* 6.若您的项目无法满足以上几点，可申请商业授权
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*/
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package cn.stylefeng.roses.kernel.rule.util;
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import cn.hutool.core.util.CharsetUtil;
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import cn.hutool.core.util.ObjectUtil;
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import cn.hutool.core.util.StrUtil;
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import cn.hutool.core.util.URLUtil;
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import cn.hutool.http.ContentType;
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import cn.stylefeng.roses.kernel.rule.pojo.response.ErrorResponseData;
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import com.alibaba.fastjson.JSON;
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import lombok.extern.slf4j.Slf4j;
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import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
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import java.nio.charset.Charset;
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/**
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* http响应信息的直接渲染工具
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*
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* @author fengshuonan
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* @date 2020/12/15 21:39
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*/
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@Slf4j
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public class ResponseRenderUtil {
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/**
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* 渲染接口json信息
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*
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* @author fengshuonan
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* @date 2020/12/15 21:40
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*/
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public static void renderJsonResponse(HttpServletResponse response, Object responseData) {
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response.setCharacterEncoding(CharsetUtil.UTF_8);
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response.setContentType(ContentType.JSON.toString());
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String errorResponseJsonData = JSON.toJSONString(responseData);
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try {
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response.getWriter().write(errorResponseJsonData);
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} catch (IOException e) {
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log.error("渲染http json信息错误！", e);
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}
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}
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/**
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* 渲染接口json信息
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*
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* @author fengshuonan
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* @date 2020/12/15 21:40
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*/
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public static void renderErrorResponse(HttpServletResponse response,
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String code, String message, String exceptionClazz) {
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response.setCharacterEncoding(CharsetUtil.UTF_8);
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response.setContentType(ContentType.JSON.toString());
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ErrorResponseData errorResponseData = new ErrorResponseData(code, message);
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errorResponseData.setExceptionClazz(exceptionClazz);
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String errorResponseJsonData = JSON.toJSONString(errorResponseData);
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try {
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response.getWriter().write(errorResponseJsonData);
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} catch (IOException e) {
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log.error("渲染http json信息错误！", e);
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}
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}
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/**
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* 设置渲染文件的头
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*
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* @author fengshuonan
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* @date 2021/7/1 15:01
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*/
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public static void setRenderFileHeader(HttpServletResponse response, String fileName) {
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final String charset = ObjectUtil.defaultIfNull(response.getCharacterEncoding(), CharsetUtil.UTF_8);
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response.setHeader("Content-Disposition", StrUtil.format("attachment;filename={}", URLUtil.encode(fileName, Charset.forName(charset))));
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response.setContentType("application/octet-stream; charset=utf-8");
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}
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/**
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* 设置图片的渲染文件头
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*
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* @author fengshuonan
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* @date 2021/7/1 15:01
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*/
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public static void setRenderImageHeader(HttpServletResponse response) {
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response.setContentType("image/png");
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}
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}
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