Examples with RenderException com.jfinal.render.RenderException used on opensource projects

Example 6 with RenderException

use of com.jfinal.render.RenderException in project jfinal by jfinal.

the class QrCodeRender method render.

public void render() {
    response.setHeader("Pragma", "no-cache");
    response.setHeader("Cache-Control", "no-cache");
    response.setDateHeader("Expires", 0);
    response.setContentType("image/png");
    Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
    hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
    //去掉白色边框，极度重要，否则二维码周围的白边会很宽
    hints.put(EncodeHintType.MARGIN, 0);
    if (errorCorrectionLevel != null) {
        hints.put(EncodeHintType.ERROR_CORRECTION, errorCorrectionLevel);
    }
    try {
        // MultiFormatWriter 可支持多种格式的条形码，在此直接使用 QRCodeWriter，通过查看源码可知少创建一个对象
        // BitMatrix bitMatrix = new MultiFormatWriter().encode(content, BarcodeFormat.QR_CODE, width, height, hints);
        QRCodeWriter writer = new QRCodeWriter();
        BitMatrix bitMatrix = writer.encode(content, BarcodeFormat.QR_CODE, width, height, hints);
        // 经测试 200 X 200 大小的二维码使用 "png" 格式只有 412B，而 "jpg" 却达到 15KB
        // format: "jpg"、"png"
        MatrixToImageWriter.writeToStream(bitMatrix, "png", response.getOutputStream());
    } catch (Exception e) {
        throw new RenderException(e);
    }
}

Example 7 with RenderException

use of com.jfinal.render.RenderException in project jfinal by jfinal.

the class ActionHandler method handle.

/**
	 * handle
	 * 1: Action action = actionMapping.getAction(target)
	 * 2: new Invocation(...).invoke()
	 * 3: render(...)
	 */
public final void handle(String target, HttpServletRequest request, HttpServletResponse response, boolean[] isHandled) {
    if (target.indexOf('.') != -1) {
        return;
    }
    isHandled[0] = true;
    String[] urlPara = { null };
    Action action = actionMapping.getAction(target, urlPara);
    if (action == null) {
        if (log.isWarnEnabled()) {
            String qs = request.getQueryString();
            log.warn("404 Action Not Found: " + (qs == null ? target : target + "?" + qs));
        }
        renderManager.getRenderFactory().getErrorRender(404).setContext(request, response).render();
        return;
    }
    try {
        Controller controller = action.getControllerClass().newInstance();
        controller.init(request, response, urlPara[0]);
        if (devMode) {
            if (ActionReporter.isReportAfterInvocation(request)) {
                new Invocation(action, controller).invoke();
                ActionReporter.report(target, controller, action);
            } else {
                ActionReporter.report(target, controller, action);
                new Invocation(action, controller).invoke();
            }
        } else {
            new Invocation(action, controller).invoke();
        }
        Render render = controller.getRender();
        if (render instanceof ForwardActionRender) {
            String actionUrl = ((ForwardActionRender) render).getActionUrl();
            if (target.equals(actionUrl)) {
                throw new RuntimeException("The forward action url is the same as before.");
            } else {
                handle(actionUrl, request, response, isHandled);
            }
            return;
        }
        if (render == null) {
            render = renderManager.getRenderFactory().getDefaultRender(action.getViewPath() + action.getMethodName());
        }
        render.setContext(request, response, action.getViewPath()).render();
    } catch (RenderException e) {
        if (log.isErrorEnabled()) {
            String qs = request.getQueryString();
            log.error(qs == null ? target : target + "?" + qs, e);
        }
    } catch (ActionException e) {
        int errorCode = e.getErrorCode();
        String msg = null;
        if (errorCode == 404) {
            msg = "404 Not Found: ";
        } else if (errorCode == 401) {
            msg = "401 Unauthorized: ";
        } else if (errorCode == 403) {
            msg = "403 Forbidden: ";
        }
        if (msg != null) {
            if (log.isWarnEnabled()) {
                String qs = request.getQueryString();
                log.warn(msg + (qs == null ? target : target + "?" + qs));
            }
        } else {
            if (log.isErrorEnabled()) {
                String qs = request.getQueryString();
                log.error(qs == null ? target : target + "?" + qs, e);
            }
        }
        e.getErrorRender().setContext(request, response, action.getViewPath()).render();
    } catch (Exception e) {
        if (log.isErrorEnabled()) {
            String qs = request.getQueryString();
            log.error(qs == null ? target : target + "?" + qs, e);
        }
        renderManager.getRenderFactory().getErrorRender(500).setContext(request, response, action.getViewPath()).render();
    }
}

Example 8 with RenderException

use of com.jfinal.render.RenderException in project my_curd by qinyou.

the class PoiRender method render.

@Override
public void render() {
    response.reset();
    response.setHeader("Content-disposition", "attachment; filename=" + fileName);
    response.setContentType(CONTENT_TYPE);
    OutputStream os = null;
    try {
        os = response.getOutputStream();
        PoiKit.with(data).sheetName(sheetName).headerRow(headerRow).headers(headers).columns(columns).cellWidth(cellWidth).export().write(os);
    } catch (Exception e) {
        throw new RenderException(e);
    } finally {
        try {
            if (os != null) {
                os.flush();
                os.close();
            }
        } catch (IOException e) {
            LOG.error(e.getMessage(), e);
        }
    }
}