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sionrui/src/main/java/cn/iocoder/dashboard/util/servlet/ServletUtils.java

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package cn.iocoder.dashboard.util.servlet;
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import cn.hutool.core.io.IoUtil;
import cn.hutool.extra.servlet.ServletUtil;
import com.alibaba.fastjson.JSON;
import org.springframework.http.MediaType;
import javax.servlet.http.HttpServletResponse;
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import java.io.IOException;
import java.net.URLEncoder;
/**
* 客户端工具类
*
* @author 芋道源码
*/
public class ServletUtils {
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/**
* 返回 JSON 字符串
*
* @param response 响应
* @param object 对象会序列化成 JSON 字符串
*/
@SuppressWarnings("deprecation") // 必须使用 APPLICATION_JSON_UTF8_VALUE否则会乱码
public static void writeJSON(HttpServletResponse response, Object object) {
String content = JSON.toJSONString(object);
ServletUtil.write(response, content, MediaType.APPLICATION_JSON_UTF8_VALUE);
}
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/**
* 返回附件
*
* @param response 响应
* @param filename 文件名
* @param content 附件内容
* @throws IOException
*/
public static void writeAttachment(HttpServletResponse response, String filename, byte[] content) throws IOException {
// 设置 header 和 contentType
response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(filename, "UTF-8"));
response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
// 输出附件
IoUtil.write(response.getOutputStream(), false, content);
}
}