Examples with HttpException org.xutils.ex.HttpException used on opensource projects

Example 1 with HttpException

use of org.xutils.ex.HttpException in project xUtils3 by wyouflf.

the class HttpFragment method onTest5Click.

/**
     * 缓存示例, 更复杂的例子参考 {@link org.xutils.image.ImageLoader}
     */
@Event(value = R.id.btn_test5)
private void onTest5Click(View view) throws FileNotFoundException {
    BaiduParams params = new BaiduParams();
    params.wd = "xUtils";
    // 默认缓存存活时间, 单位:毫秒.(如果服务没有返回有效的max-age或Expires)
    params.setCacheMaxAge(1000 * 60);
    Callback.Cancelable cancelable = // 使用CacheCallback, xUtils将为该请求缓存数据.
    x.http().get(params, new Callback.CacheCallback<String>() {

        private boolean hasError = false;

        private String result = null;

        @Override
        public boolean onCache(String result) {
            // 得到缓存数据, 缓存过期后不会进入这个方法.
            // 如果服务端没有返回过期时间, 参考params.setCacheMaxAge(maxAge)方法.
            //
            // * 客户端会根据服务端返回的 header 中 max-age 或 expires 来确定本地缓存是否给 onCache 方法.
            //   如果服务端没有返回 max-age 或 expires, 那么缓存将一直保存, 除非这里自己定义了返回false的
            //   逻辑, 那么xUtils将请求新数据, 来覆盖它.
            //
            // * 如果信任该缓存返回 true, 将不再请求网络;
            //   返回 false 继续请求网络, 但会在请求头中加上ETag, Last-Modified等信息,
            //   如果服务端返回304, 则表示数据没有更新, 不继续加载数据.
            //
            this.result = result;
            // true: 信任缓存数据, 不在发起网络请求; false不信任缓存数据.
            return false;
        }

        @Override
        public void onSuccess(String result) {
            // 注意: 如果服务返回304 或 onCache 选择了信任缓存, 这时result为null.
            if (result != null) {
                this.result = result;
            }
        }

        @Override
        public void onError(Throwable ex, boolean isOnCallback) {
            hasError = true;
            Toast.makeText(x.app(), ex.getMessage(), Toast.LENGTH_LONG).show();
            if (ex instanceof HttpException) {
                // 网络错误
                HttpException httpEx = (HttpException) ex;
                int responseCode = httpEx.getCode();
                String responseMsg = httpEx.getMessage();
                String errorResult = httpEx.getResult();
            // ...
            } else {
            // 其他错误
            // ...
            }
        }

        @Override
        public void onCancelled(CancelledException cex) {
            Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
        }

        @Override
        public void onFinished() {
            if (!hasError && result != null) {
                // 成功获取数据
                Toast.makeText(x.app(), result, Toast.LENGTH_LONG).show();
            }
        }
    });
}

Example 2 with HttpException

use of org.xutils.ex.HttpException in project xUtils3 by wyouflf.

the class HttpFragment method onTest1Click.

/**
     * 1. 方法必须私有限定,
     * 2. 方法参数形式必须和type对应的Listener接口一致.
     * 3. 注解参数value支持数组: value={id1, id2, id3}
     * 4. 其它参数说明见{@link org.xutils.view.annotation.Event}类的说明.
     **/
@Event(value = R.id.btn_test1, type = View.OnClickListener.class)
private void onTest1Click(View view) {
    /**
         * 自定义实体参数类请参考:
         * 请求注解 {@link org.xutils.http.annotation.HttpRequest}
         * 请求注解处理模板接口 {@link org.xutils.http.app.ParamsBuilder}
         *
         * 需要自定义类型作为callback的泛型时, 参考:
         * 响应注解 {@link org.xutils.http.annotation.HttpResponse}
         * 响应注解处理模板接口 {@link org.xutils.http.app.ResponseParser}
         *
         * 示例: 查看 org.xutils.sample.http 包里的代码
         */
    BaiduParams params = new BaiduParams();
    params.wd = "xUtils";
    // 有上传文件时使用multipart表单, 否则上传原始文件流.
    // params.setMultipart(true);
    // 上传文件方式 1
    // params.uploadFile = new File("/sdcard/test.txt");
    // 上传文件方式 2
    // params.addBodyParameter("uploadFile", new File("/sdcard/test.txt"));
    Callback.Cancelable cancelable = x.http().get(params, /**
                 * 1. callback的泛型:
                 * callback参数默认支持的泛型类型参见{@link org.xutils.http.loader.LoaderFactory},
                 * 例如: 指定泛型为File则可实现文件下载, 使用params.setSaveFilePath(path)指定文件保存的全路径.
                 * 默认支持断点续传(采用了文件锁和尾端校验续传文件的一致性).
                 * 其他常用类型可以自己在LoaderFactory中注册,
                 * 也可以使用{@link org.xutils.http.annotation.HttpResponse}
                 * 将注解HttpResponse加到自定义返回值类型上, 实现自定义ResponseParser接口来统一转换.
                 * 如果返回值是json形式, 那么利用第三方的json工具将十分容易定义自己的ResponseParser.
                 * 如示例代码{@link org.xutils.sample.http.BaiduResponse}, 可直接使用BaiduResponse作为
                 * callback的泛型.
                 *
                 * @HttpResponse 注解 和 ResponseParser接口仅适合做json, xml等文本类型数据的解析,
                 * 如果需要其他数据类型的解析可参考:
                 * {@link org.xutils.http.loader.LoaderFactory}
                 * 和 {@link org.xutils.common.Callback.PrepareCallback}.
                 * LoaderFactory提供PrepareCallback第一个泛型参数类型的自动转换,
                 * 第二个泛型参数需要在prepare方法中实现.
                 * (LoaderFactory中已经默认提供了部分常用类型的转换实现, 其他类型需要自己注册.)
                 *
                 * 2. callback的组合:
                 * 可以用基类或接口组合个种类的Callback, 见{@link org.xutils.common.Callback}.
                 * 例如:
                 * a. 组合使用CacheCallback将使请求检测缓存或将结果存入缓存(仅GET请求生效).
                 * b. 组合使用PrepareCallback的prepare方法将为callback提供一次后台执行耗时任务的机会,
                 * 然后将结果给onCache或onSuccess.
                 * c. 组合使用ProgressCallback将提供进度回调.
                 * ...(可参考{@link org.xutils.image.ImageLoader}
                 * 或 示例代码中的 {@link org.xutils.sample.download.DownloadCallback})
                 *
                 * 3. 请求过程拦截或记录日志: 参考 {@link org.xutils.http.app.RequestTracker}
                 *
                 * 4. 请求Header获取: 参考 {@link org.xutils.http.app.RequestInterceptListener}
                 *
                 * 5. 其他(线程池, 超时, 重定向, 重试, 代理等): 参考 {@link org.xutils.http.RequestParams}
                 *
                 **/
    new Callback.CommonCallback<List<BaiduResponse>>() {

        @Override
        public void onSuccess(List<BaiduResponse> result) {
            Toast.makeText(x.app(), result.get(0).toString(), Toast.LENGTH_LONG).show();
        }

        @Override
        public void onError(Throwable ex, boolean isOnCallback) {
            Toast.makeText(x.app(), ex.getMessage(), Toast.LENGTH_LONG).show();
            if (ex instanceof HttpException) {
                // 网络错误
                HttpException httpEx = (HttpException) ex;
                int responseCode = httpEx.getCode();
                String responseMsg = httpEx.getMessage();
                String errorResult = httpEx.getResult();
            // ...
            } else {
            // 其他错误
            // ...
            }
        }

        @Override
        public void onCancelled(CancelledException cex) {
            Toast.makeText(x.app(), "cancelled", Toast.LENGTH_LONG).show();
        }

        @Override
        public void onFinished() {
        }
    });
// cancelable.cancel(); // 取消请求
}

Example 3 with HttpException

use of org.xutils.ex.HttpException in project xUtils3 by wyouflf.

the class HttpRequest method sendRequest.

/**
     * invoke via Loader
     *
     * @throws IOException
     */
@Override
@TargetApi(Build.VERSION_CODES.KITKAT)
public void sendRequest() throws Throwable {
    isLoading = false;
    responseCode = 0;
    URL url = new URL(queryUrl);
    {
        // init connection
        Proxy proxy = params.getProxy();
        if (proxy != null) {
            connection = (HttpURLConnection) url.openConnection(proxy);
        } else {
            connection = (HttpURLConnection) url.openConnection();
        }
        // try to fix bug: accidental EOFException before API 19
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
            connection.setRequestProperty("Connection", "close");
        }
        connection.setReadTimeout(params.getReadTimeout());
        connection.setConnectTimeout(params.getConnectTimeout());
        connection.setInstanceFollowRedirects(params.getRedirectHandler() == null);
        if (connection instanceof HttpsURLConnection) {
            SSLSocketFactory sslSocketFactory = params.getSslSocketFactory();
            if (sslSocketFactory != null) {
                ((HttpsURLConnection) connection).setSSLSocketFactory(sslSocketFactory);
            }
        }
    }
    if (params.isUseCookie()) {
        // add cookies
        try {
            Map<String, List<String>> singleMap = COOKIE_MANAGER.get(url.toURI(), new HashMap<String, List<String>>(0));
            List<String> cookies = singleMap.get("Cookie");
            if (cookies != null) {
                connection.setRequestProperty("Cookie", TextUtils.join(";", cookies));
            }
        } catch (Throwable ex) {
            LogUtil.e(ex.getMessage(), ex);
        }
    }
    {
        // add headers
        List<RequestParams.Header> headers = params.getHeaders();
        if (headers != null) {
            for (RequestParams.Header header : headers) {
                String name = header.key;
                String value = header.getValueStr();
                if (!TextUtils.isEmpty(name) && !TextUtils.isEmpty(value)) {
                    if (header.setHeader) {
                        connection.setRequestProperty(name, value);
                    } else {
                        connection.addRequestProperty(name, value);
                    }
                }
            }
        }
    }
    // intercept response
    if (requestInterceptListener != null) {
        requestInterceptListener.beforeRequest(this);
    }
    {
        // write body
        HttpMethod method = params.getMethod();
        try {
            connection.setRequestMethod(method.toString());
        } catch (ProtocolException ex) {
            try {
                // fix: HttpURLConnection not support PATCH method.
                Field methodField = HttpURLConnection.class.getDeclaredField("method");
                methodField.setAccessible(true);
                methodField.set(connection, method.toString());
            } catch (Throwable ignored) {
                throw ex;
            }
        }
        if (HttpMethod.permitsRequestBody(method)) {
            RequestBody body = params.getRequestBody();
            if (body != null) {
                if (body instanceof ProgressBody) {
                    ((ProgressBody) body).setProgressHandler(progressHandler);
                }
                String contentType = body.getContentType();
                if (!TextUtils.isEmpty(contentType)) {
                    connection.setRequestProperty("Content-Type", contentType);
                }
                long contentLength = body.getContentLength();
                if (contentLength < 0) {
                    connection.setChunkedStreamingMode(256 * 1024);
                } else {
                    if (contentLength < Integer.MAX_VALUE) {
                        connection.setFixedLengthStreamingMode((int) contentLength);
                    } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
                        connection.setFixedLengthStreamingMode(contentLength);
                    } else {
                        connection.setChunkedStreamingMode(256 * 1024);
                    }
                }
                connection.setRequestProperty("Content-Length", String.valueOf(contentLength));
                connection.setDoOutput(true);
                body.writeTo(connection.getOutputStream());
            }
        }
    }
    if (params.isUseCookie()) {
        // save cookies
        try {
            Map<String, List<String>> headers = connection.getHeaderFields();
            if (headers != null) {
                COOKIE_MANAGER.put(url.toURI(), headers);
            }
        } catch (Throwable ex) {
            LogUtil.e(ex.getMessage(), ex);
        }
    }
    // check response code
    responseCode = connection.getResponseCode();
    // intercept response
    if (requestInterceptListener != null) {
        requestInterceptListener.afterRequest(this);
    }
    if (responseCode == 204 || responseCode == 205) {
        // empty content
        throw new HttpException(responseCode, this.getResponseMessage());
    } else if (responseCode >= 300) {
        HttpException httpException = new HttpException(responseCode, this.getResponseMessage());
        try {
            httpException.setResult(IOUtil.readStr(this.getInputStream(), params.getCharset()));
        } catch (Throwable ignored) {
        }
        LogUtil.e(httpException.toString() + ", url: " + queryUrl);
        throw httpException;
    }
    isLoading = true;
}

Example 4 with HttpException

use of org.xutils.ex.HttpException in project xUtils3 by wyouflf.

the class FileLoader method load.

@Override
public File load(final UriRequest request) throws Throwable {
    ProcessLock processLock = null;
    File result = null;
    try {
        // 处理[下载逻辑1](见文件头doc)
        saveFilePath = params.getSaveFilePath();
        diskCacheFile = null;
        if (TextUtils.isEmpty(saveFilePath)) {
            if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
                throw new Callback.CancelledException("download stopped!");
            }
            // 保存路径为空, 存入磁盘缓存.
            initDiskCacheFile(request);
        } else {
            tempSaveFilePath = saveFilePath + ".tmp";
        }
        if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
            throw new Callback.CancelledException("download stopped!");
        }
        // 等待, 若不能下载则取消此次下载.
        processLock = ProcessLock.tryLock(saveFilePath + "_lock", true);
        if (processLock == null || !processLock.isValid()) {
            throw new FileLockedException("download exists: " + saveFilePath);
        }
        params = request.getParams();
        {
            // 处理[断点逻辑1](见文件头doc)
            long range = 0;
            if (isAutoResume) {
                File tempFile = new File(tempSaveFilePath);
                long fileLen = tempFile.length();
                if (fileLen <= CHECK_SIZE) {
                    IOUtil.deleteFileOrDir(tempFile);
                    range = 0;
                } else {
                    range = fileLen - CHECK_SIZE;
                }
            }
            // retry 时需要覆盖RANGE参数
            params.setHeader("RANGE", "bytes=" + range + "-");
        }
        if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
            throw new Callback.CancelledException("download stopped!");
        }
        // may be throw an HttpException
        request.sendRequest();
        contentLength = request.getContentLength();
        if (isAutoRename) {
            responseFileName = getResponseFileName(request);
        }
        if (isAutoResume) {
            isAutoResume = isSupportRange(request);
        }
        if (progressHandler != null && !progressHandler.updateProgress(0, 0, false)) {
            throw new Callback.CancelledException("download stopped!");
        }
        if (diskCacheFile != null) {
            DiskCacheEntity entity = diskCacheFile.getCacheEntity();
            entity.setLastAccess(System.currentTimeMillis());
            entity.setEtag(request.getETag());
            entity.setExpires(request.getExpiration());
            entity.setLastModify(new Date(request.getLastModified()));
        }
        result = this.load(request.getInputStream());
    } catch (HttpException httpException) {
        if (httpException.getCode() == 416) {
            if (diskCacheFile != null) {
                result = diskCacheFile.commit();
            } else {
                result = new File(tempSaveFilePath);
            }
            // 从缓存获取文件, 不rename和断点, 直接退出.
            if (result != null && result.exists()) {
                if (isAutoRename) {
                    responseFileName = getResponseFileName(request);
                }
                result = autoRename(result);
            } else {
                IOUtil.deleteFileOrDir(result);
                throw new IllegalStateException("cache file not found" + request.getCacheKey());
            }
        } else {
            throw httpException;
        }
    } finally {
        IOUtil.closeQuietly(processLock);
        IOUtil.closeQuietly(diskCacheFile);
    }
    return result;
}