功能优化

zhanghua

2023-03-29 88b11c72916d5ce1b6bebc060c234af9bbeee300

 ycl-platform/src/main/java/com/ycl/controller/platformApi/AlarmController.java

@@ -15,8 +15,8 @@
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletResponse;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

@@ -27,8 +27,6 @@
@RestController
@RequestMapping("/API")
public class AlarmController {


    private IVideoAlarmReportService videoAlarmReportService;

    @Autowired
@@ -63,25 +61,45 @@


    @ApiOperation(value = "获取图片")
    @GetMapping(value = "/img", produces = MediaType.IMAGE_PNG_VALUE)
    @GetMapping(value = "/img", produces = {MediaType.IMAGE_JPEG_VALUE, MediaType.IMAGE_PNG_VALUE})
//    @GetMapping(value = "/img")
    @ResponseBody
    public byte[] getImages(HttpServletResponse response, @RequestParam String fileUrl) {
    public byte[] getImages(HttpServletResponse response, @RequestParam String fileUrl,
                            @RequestParam(required = false) String OSSAccessKeyId,
                            @RequestParam(required = false) String Signature) {
        try {
            URL url = new URL(fileUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();
            conn.setRequestMethod("GET");
            conn.setConnectTimeout(5 * 1000);
            conn.setConnectTimeout(10 * 1000);
            conn.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0; Windows NT; DigExt)");

            InputStream inputStream = conn.getInputStream();// 通过输入流获取图片数据

            byte[] bytes = new byte[inputStream.available()];
            inputStream.read(bytes, 0, inputStream.available());

            return bytes;
            byte[] data = readInputStream(inputStream);
            return data;

        } catch (Exception e) {
            System.out.println("获取图片失败：" + e.getMessage());
            e.printStackTrace();
        }
        return null;
    }

    private byte[] readInputStream(InputStream inStream) throws Exception {
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        //创建一个Buffer字符串
        byte[] buffer = new byte[1024];
        //每次读取的字符串长度，如果为-1，代表全部读取完毕
        int len = 0;
        //使用一个输入流从buffer里把数据读取出来
        while ((len = inStream.read(buffer)) != -1) {
            //用输出流往buffer里写入数据，中间参数代表从哪个位置开始读，len代表读取的长度
            outStream.write(buffer, 0, len);
        }
        //关闭输入流
        inStream.close();
        //把outStream里的数据写入内存
        return outStream.toByteArray();
    }
}