通常，您不应该依赖于参数的顺序.如果您确实确定这是必要的，则可以:

Normally you should not depend on the order of parameters. If you are really sure this is necessary, you can:

• 使用 request.getQueryString()查看 GET 参数
• 获取原始请求( request.getInputStream())并读取提交的 POST 参数.

• use request.getQueryString() to see GET parameters
• get the raw request (request.getInputStream()) and read the submitted POST params.