Thinkphp 在api开发中异常返回依然是html的解决方式

现在谁不开发接口的呢？但是在接口开发过程中，报错误异常后居然返回错误的信息依然是html信息！TP官方也不知道为啥不添加，说好的为接口而生，我的解决方案也很简单，把系统的异常处理类复制出来，去掉模板相关，直接以json方式输出

下面是解决方案：

1:按照TP扩展异常的方式引用这个文件

https://www.kancloud.cn/manual/thinkphp5_1/354092

// 判断默认输出类型
// $app 是配置数组
if ($app['default_return_type'] == 'json') {
// 异常处理handle类 留空使用 \think\exception\Handle
$app['exception_handle'] = '\\app\\common\\exception\\JsonException';
}
return $app;

异常处理类：

<?php

namespace app\common\exception;

use Exception;
use think\exception\ErrorException;
use think\exception\Handle;
use think\exception\HttpException;
use think\console\Output;
use think\Container;
use think\Response;

class JsonException extends Handle
{
protected $render;
protected $ignoreReport = [
'\\think\\exception\\HttpException',
];

public function setRender($render)
{
$this->render = $render;
}

/**
* Report or log an exception.
*
* @access public
* @param \Exception $exception
* @return void
*/
public function report(Exception $exception)
{
if (!$this->isIgnoreReport($exception)) {
// 收集异常数据
if (Container::get('app')->isDebug()) {
$data = [
'file' => $exception->getFile(),
'line' => $exception->getLine(),
'message' => $this->getMessage($exception),
'code' => $this->getCode($exception),
];
$log = "[{$data['code']}]{$data['message']}[{$data['file']}:{$data['line']}]";
} else {
$data = [
'code' => $this->getCode($exception),
'message' => $this->getMessage($exception),
];
$log = "[{$data['code']}]{$data['message']}";
}

if (Container::get('app')->config('log.record_trace')) {
$log .= "\r\n" . $exception->getTraceAsString();
}

Container::get('log')->record($log, 'error');
}
}

protected function isIgnoreReport(Exception $exception)
{
foreach ($this->ignoreReport as $class) {
if ($exception instanceof $class) {
return true;
}
}

return false;
}

/**
* Render an exception into an HTTP response.
*
* @access public
* @param \Exception $e
* @return Response
*/
public function render(Exception $e)
{
if ($this->render && $this->render instanceof \Closure) {
$result = call_user_func_array($this->render, [$e]);

if ($result) {
return $result;
}
}

if ($e instanceof HttpException) {
return $this->renderHttpException($e);
} else {
return $this->convertExceptionToResponse($e);
}
}

/**
* @access public
* @param Output $output
* @param Exception $e
*/
public function renderForConsole(Output $output, Exception $e)
{
if (Container::get('app')->isDebug()) {
$output->setVerbosity(Output::VERBOSITY_DEBUG);
}

$output->renderException($e);
}

/**
* @access protected
* @param HttpException $e
* @return Response
*/
protected function renderHttpException(HttpException $e)
{
$status = $e->getStatusCode();
$template = Container::get('app')->config('http_exception_template');

if (!Container::get('app')->isDebug() && !empty($template[$status])) {
return Response::create($e, 'json', $status);
} else {
return $this->convertExceptionToResponse($e);
}
}

/**
* @access protected
* @param Exception $exception
* @return Response
*/
protected function convertExceptionToResponse(Exception $exception)
{
// 收集异常数据
if (Container::get('app')->isDebug()) {
// 调试模式，获取详细的错误信息
$data = [
'name' => get_class($exception),
'file' => $exception->getFile(),
'line' => $exception->getLine(),
'message' => $this->getMessage($exception),
'trace' => $exception->getTrace(),
'code' => $this->getCode($exception),
'source' => $this->getSourceCode($exception),
'datas' => $this->getExtendData($exception),
'tables' => [
'GET Data'    => $_GET,
'POST Data'    => $_POST,
'Files'     => $_FILES,
'Cookies'    => $_COOKIE,
'Session'    => isset($_SESSION) ? $_SESSION : [],
'Server/Request Data' => $_SERVER,
'Environment Variables' => $_ENV,
'ThinkPHP Constants' => $this->getConst(),
],
];
} else {
// 部署模式仅显示 Code 和 Message
$data = [
'code' => $this->getCode($exception),
'message' => $this->getMessage($exception),
];

if (!Container::get('app')->config('show_error_msg')) {
// 不显示详细错误信息
$data['message'] = Container::get('app')->config('error_message');
}
}

//保留一层
while (ob_get_level() > 1) {
ob_end_clean();
}

$data['echo'] = ob_get_clean();

$response = Response::create($data, 'json');

if ($exception instanceof HttpException) {
$statusCode = $exception->getStatusCode();
$response->header($exception->getHeaders());
}

if (!isset($statusCode)) {
$statusCode = 500;
}
$response->code($statusCode);

return $response;
}

/**
* 获取错误编码
* ErrorException则使用错误级别作为错误编码
* @access protected
* @param \Exception $exception
* @return integer    错误编码
*/
protected function getCode(Exception $exception)
{
$code = $exception->getCode();

if (!$code && $exception instanceof ErrorException) {
$code = $exception->getSeverity();
}

return $code;
}

/**
* 获取错误信息
* ErrorException则使用错误级别作为错误编码
* @access protected
* @param \Exception $exception
* @return string    错误信息
*/
protected function getMessage(Exception $exception)
{
$message = $exception->getMessage();

if (PHP_SAPI == 'cli') {
return $message;
}

$lang = Container::get('lang');

if (strpos($message, ':')) {
$name = strstr($message, ':', true);
$message = $lang->has($name) ? $lang->get($name) . strstr($message, ':') : $message;
} elseif (strpos($message, ',')) {
$name = strstr($message, ',', true);
$message = $lang->has($name) ? $lang->get($name) . ':' . substr(strstr($message, ','), 1) : $message;
} elseif ($lang->has($message)) {
$message = $lang->get($message);
}

return $message;
}

/**
* 获取出错文件内容
* 获取错误的前9行和后9行
* @access protected
* @param \Exception $exception
* @return array     错误文件内容
*/
protected function getSourceCode(Exception $exception)
{
// 读取前9行和后9行
$line = $exception->getLine();
$first = ($line - 9 > 0) ? $line - 9 : 1;

try {
$contents = file($exception->getFile());
$source = [
'first' => $first,
'source' => array_slice($contents, $first - 1, 19),
];
} catch (Exception $e) {
$source = [];
}

return $source;
}

/**
* 获取异常扩展信息
* 用于非调试模式html返回类型显示
* @access protected
* @param \Exception $exception
* @return array     异常类定义的扩展数据
*/
protected function getExtendData(Exception $exception)
{
$data = [];

if ($exception instanceof \think\Exception) {
$data = $exception->getData();
}

return $data;
}

/**
* 获取常量列表
* @access private
* @return array 常量列表
*/
private static function getConst()
{
$const = get_defined_constants(true);

return isset($const['user']) ? $const['user'] : [];
}

}

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