package com.springbootblog.controller;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
/**
*@title : JavaClass
*@author:zyh
*@createDate:2018/9/13 21:46
*
**/
@RequestMapping(value = "/queryImg")
@Controller
public class ReadImgController {
@ApiOperation(value = "img", produces = "application/json")
@ApiImplicitParams({
})
@RequestMapping(value = "/img",method = RequestMethod.POST)
@ResponseBody
public void getImage(String path, HttpServletRequest request, HttpServletResponse response) {
try {
String url="D:\\temp-appImg\\20180912\\7cd2e1a3-a087-4e25-aac8-2bdf8e274c6f.png";
File file = new File(url);
String l=request.getRealPath("/")+"/"+url;
String filename = file.getName();
InputStream fis = new BufferedInputStream(new FileInputStream(file));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset();
// 设置response的Header
response.addHeader("Content-Length", "" + file.length());
response.setContentType("image/jpg");
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
//return response;
}
@ApiOperation(value = "img", produces = "application/json")
@ApiImplicitParams({
})
@RequestMapping(value = "/imgRes",method = RequestMethod.POST)
@ResponseBody
public HttpServletResponse getImageRes(String path, HttpServletRequest request, HttpServletResponse response) {
try {
String url="D:\\temp-appImg\\20180912\\7cd2e1a3-a087-4e25-aac8-2bdf8e274c6f.png";
File file = new File(url);
String l=request.getRealPath("/")+"/"+url;
String filename = file.getName();
InputStream fis = new BufferedInputStream(new FileInputStream(file));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
response.reset();
// 设置response的Header
response.addHeader("Content-Length", "" + file.length());
response.setContentType("image/png");
OutputStream toClient = new BufferedOutputStream(response.getOutputStream(),888888);
toClient.write(buffer);
toClient.flush();
toClient.close();
} catch (IOException ex) {
ex.printStackTrace();
}
return response;
}
@ApiOperation(value = "返回指定地址的文件流1")
@ApiImplicitParams({
@ApiImplicitParam(name = "url", value = "图片地址", required = true,
paramType = "query", defaultValue = "\\20180912\\7cd2e1a3-a087-4e25-aac8-2bdf8e274c6f.png"),
})
@RequestMapping(value = "/noLogin/readImageFile1", method = RequestMethod.POST)
@ResponseBody
public void getUrlFile(String url, HttpServletRequest request, HttpServletResponse response) {
String serverUrl = "D:\\temp-appImg\\";
String imgUrl = serverUrl + url;
File file = new File(imgUrl);
// 后缀名
String suffixName = url.substring(url.lastIndexOf("."));
String imgType = "image/" + suffixName;
//判断文件是否存在如果不存在就返回默认图标
if (!(file.exists() && file.canRead())) {
file = new File(request.getSession().getServletContext().getRealPath("/")
+ "resource/icons/auth/root.png");
}
FileInputStream inputStream = null;
try {
inputStream = new FileInputStream(file);
byte[] data = new byte[(int) file.length()];
int length = inputStream.read(data);
inputStream.close();
//setContentType("text/plain; charset=utf-8"); 文本
response.setContentType(imgType + ";charset=utf-8");
OutputStream stream = response.getOutputStream();
stream.write(data);
stream.flush();
stream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}