/*
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* Copyright (c) 2018-2028, Chill Zhuang All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* Neither the name of the dreamlu.net developer nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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* Author: Chill 庄骞 (smallchill@163.com)
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*/
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package org.springblade.core.boot.ctrl;
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import org.springblade.core.boot.file.LocalFile;
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import org.springblade.core.boot.file.BladeFileUtil;
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import org.springblade.core.secure.BladeUser;
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import org.springblade.core.secure.utils.AuthUtil;
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import org.springblade.core.tool.api.R;
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import org.springblade.core.tool.utils.Charsets;
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import org.springblade.core.tool.utils.StringPool;
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import org.springblade.core.tool.utils.WebUtil;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.core.io.FileSystemResource;
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import org.springframework.core.io.Resource;
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import org.springframework.core.io.support.ResourceRegion;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.MediaType;
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import org.springframework.http.ResponseEntity;
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import org.springframework.web.multipart.MultipartFile;
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import org.springframework.web.util.UriUtils;
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import javax.servlet.http.HttpServletRequest;
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import java.io.File;
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import java.io.IOException;
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import java.util.List;
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/**
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* Blade控制器封装类
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*
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* @author Chill
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*/
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public class BladeController {
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/**
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* ============================ REQUEST =================================================
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*/
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@Autowired
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private HttpServletRequest request;
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/**
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* 获取request
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*/
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public HttpServletRequest getRequest() {
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return this.request;
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}
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/**
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* 获取当前用户
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*
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* @return
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*/
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public BladeUser getUser() {
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return AuthUtil.getUser();
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}
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/** ============================ API_RESULT ================================================= */
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/**
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* 返回ApiResult
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*
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* @param data
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* @return R
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*/
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public <T> R<T> data(T data) {
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return R.data(data);
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}
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/**
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* 返回ApiResult
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*
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* @param data
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* @param message
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* @return R
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*/
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public <T> R<T> data(T data, String message) {
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return R.data(data, message);
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}
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/**
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* 返回ApiResult
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*
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* @param data
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* @param message
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* @param code
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* @return R
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*/
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public <T> R<T> data(T data, String message, int code) {
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return R.data(code, data, message);
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}
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/**
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* 返回ApiResult
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*
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* @param message
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* @return R
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*/
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public R success(String message) {
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return R.success(message);
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}
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/**
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* 返回ApiResult
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*
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* @param message
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* @return R
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*/
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public R fail(String message) {
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return R.fail(message);
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}
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/**
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* 返回ApiResult
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*
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* @param flag
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* @return R
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*/
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public R status(boolean flag) {
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return R.status(flag);
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}
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/**============================ FILE ================================================= */
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/**
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* 获取BladeFile封装类
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*
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* @param file
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* @return
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*/
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public LocalFile getFile(MultipartFile file) {
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return BladeFileUtil.getFile(file);
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}
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/**
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* 获取BladeFile封装类
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*
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* @param file
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* @param dir
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* @return
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*/
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public LocalFile getFile(MultipartFile file, String dir) {
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return BladeFileUtil.getFile(file, dir);
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}
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/**
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* 获取BladeFile封装类
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*
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* @param file
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* @param dir
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* @param path
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* @param virtualPath
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* @return
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*/
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public LocalFile getFile(MultipartFile file, String dir, String path, String virtualPath) {
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return BladeFileUtil.getFile(file, dir, path, virtualPath);
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}
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/**
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* 获取BladeFile封装类
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*
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* @param files
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* @return
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*/
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public List<LocalFile> getFiles(List<MultipartFile> files) {
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return BladeFileUtil.getFiles(files);
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}
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/**
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* 获取BladeFile封装类
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*
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* @param files
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* @param dir
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* @return
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*/
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public List<LocalFile> getFiles(List<MultipartFile> files, String dir) {
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return BladeFileUtil.getFiles(files, dir);
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}
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/**
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* 获取BladeFile封装类
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*
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* @param files
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* @param path
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* @param virtualPath
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* @return
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*/
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public List<LocalFile> getFiles(List<MultipartFile> files, String dir, String path, String virtualPath) {
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return BladeFileUtil.getFiles(files, dir, path, virtualPath);
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}
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/**
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* 下载文件
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*
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* @param file 文件
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* @return {ResponseEntity}
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* @throws IOException io异常
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*/
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protected ResponseEntity<ResourceRegion> download(File file) throws IOException {
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String fileName = file.getName();
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return download(file, fileName);
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}
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/**
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* 下载
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*
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* @param file 文件
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* @param fileName 生成的文件名
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* @return {ResponseEntity}
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* @throws IOException io异常
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*/
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protected ResponseEntity<ResourceRegion> download(File file, String fileName) throws IOException {
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Resource resource = new FileSystemResource(file);
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return download(resource, fileName);
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}
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/**
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* 下载
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*
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* @param resource 资源
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* @param fileName 生成的文件名
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* @return {ResponseEntity}
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* @throws IOException io异常
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*/
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protected ResponseEntity<ResourceRegion> download(Resource resource, String fileName) throws IOException {
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HttpServletRequest request = WebUtil.getRequest();
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String header = request.getHeader(HttpHeaders.USER_AGENT);
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// 避免空指针
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header = header == null ? StringPool.EMPTY : header.toUpperCase();
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HttpStatus status;
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String msie= "MSIE";
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String trident= "TRIDENT";
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String edge= "EDGE";
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if (header.contains(msie) || header.contains(trident) || header.contains(edge)) {
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status = HttpStatus.OK;
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} else {
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status = HttpStatus.CREATED;
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}
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// 断点续传
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long position = 0;
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long count = resource.contentLength();
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String range = request.getHeader(HttpHeaders.RANGE);
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if (null != range) {
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status = HttpStatus.PARTIAL_CONTENT;
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String[] rangeRange = range.replace("bytes=", StringPool.EMPTY).split(StringPool.DASH);
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position = Long.parseLong(rangeRange[0]);
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if (rangeRange.length > 1) {
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long end = Long.parseLong(rangeRange[1]);
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count = end - position + 1;
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}
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}
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HttpHeaders headers = new HttpHeaders();
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headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
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String encodeFileName = UriUtils.encode(fileName, Charsets.UTF_8);
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// 兼容各种浏览器下载：
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// https://blog.robotshell.org/2012/deal-with-http-header-encoding-for-file-download/
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String disposition = "attachment;" +
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"filename=\"" + encodeFileName + "\";" +
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"filename*=utf-8''" + encodeFileName;
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headers.set(HttpHeaders.CONTENT_DISPOSITION, disposition);
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return new ResponseEntity<>(new ResourceRegion(resource, position, count), headers, status);
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}
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}
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