zyml/cn.com.taiji.system/src/main/java/cn/com/taiji/zhongxiao/web/FileDown.java

package cn.com.taiji.zhongxiao.web;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URLEncoder;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.util.ResourceUtils;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;


@Controller
@RequestMapping(value="/fileDown")
public class FileDown {

	@Value("${spring.profiles.active}")
	private String profile;
	    @RequestMapping("/download{name}")  
	    public void fileDownload(@PathVariable("name") String name ,HttpServletRequest request, HttpServletResponse response){   //Model models,
			FileInputStream ins = null;
			OutputStream out = null ;
			try {
				File file = File.createTempFile(name, ".xlsx");
				file.deleteOnExit();
				if ("prod".equals(profile)) {
					FileUtils.copyInputStreamToFile(this.getClass().getClassLoader().getResourceAsStream("templates/download-excel-template/" + name + ".xlsx"), file);
				} else {
					file = ResourceUtils.getFile("classpath:templates/download-excel-template/" + name + ".xlsx");
				}
				//设置响应头，控制浏览器下载该文件
		  if(file.exists()){
	    	response.setHeader("Content-disposition", String.format("attachment; filename=\"%s\"", name+".xlsx"));
	    	response.setContentType("application/vnd.ms-excel;charset=utf-8");
	    	response.setCharacterEncoding("UTF-8"); 
	    	//读取要下载的文件，保存到文件输入流
	    	    ins  = new FileInputStream(file);
	    	//创建输出流
	    	    out = response.getOutputStream();
	    	//创建缓冲区
	    	byte buffer[] = new byte[1024];
	    	int len = 0;
	    	//循环将输入流中的内容读取到缓冲区当中
	    	while((len=ins.read(buffer))>0){
	    	//输出缓冲区的内容到浏览器，实现文件下载
	    	out.write(buffer, 0, len);
	    	
	    	}
	
		    }else{
		    	response.setHeader("Warning" ,"199 Miscellaneous warning");
		    	response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode("文件不存在或者失效.html", "UTF-8"));
		    }
	    	} catch (IOException e1) {
				e1.printStackTrace();
			}finally{
					try {
						//关闭文件输入流
						if (ins != null) {
							ins.close();
						}
						//关闭输出流
						if (out != null) {
							out.close();
						}
					} catch (IOException e) {
						e.printStackTrace();
					}
			}
	    	
	    }  
	    @RequestMapping("/alldownload{name}-{type}")  
	    public void allfileDownload(@PathVariable("name") String name ,@PathVariable("type") String type, HttpServletRequest request, HttpServletResponse response){   //Model models,
			FileInputStream ins = null;
			OutputStream out = null ;
			try {
				File file = File.createTempFile(name, "." + type);
				file.deleteOnExit();
				if ("prod".equals(profile)) {
					FileUtils.copyInputStreamToFile(this.getClass().getClassLoader().getResourceAsStream("templates/download-excel-template/" + name + "." + type), file);
				} else {
					file = ResourceUtils.getFile("classpath:templates/download-excel-template/" + name + "." + type);
				}
				//设置响应头，控制浏览器下载该文件
		  if(file.exists()){
	    	response.setHeader("Content-disposition", String.format("attachment; filename=\"%s\"", name+"."+type));
	    	response.setContentType("application/octet-stream;charset=utf-8");
	    	response.setCharacterEncoding("UTF-8"); 
	    	//读取要下载的文件，保存到文件输入流
	    	    ins  = new FileInputStream(file);
	    	//创建输出流
	    	    out = response.getOutputStream();
	    	//创建缓冲区
	    	byte buffer[] = new byte[1024];
	    	int len = 0;
	    	//循环将输入流中的内容读取到缓冲区当中
	    	while((len=ins.read(buffer))>0){
	    	//输出缓冲区的内容到浏览器，实现文件下载
	    	out.write(buffer, 0, len);
	    	
	    	}
	
		    }else{
		    	response.setHeader("Warning" ,"199 Miscellaneous warning");
		    	response.setHeader("content-disposition", "attachment;filename=" + URLEncoder.encode("文件不存在或者失效.html", "UTF-8"));
		    }
	    	} catch (IOException e1) {
				e1.printStackTrace();
			}finally{
					try {
						//关闭文件输入流
						if (ins != null) {
							ins.close();
						}
						//关闭输出流
						if (out != null) {
							out.close();
						}
					} catch (IOException e) {
						e.printStackTrace();
					}
			}
	    	
	    }  
	
	
}