HttpServletResponse(响应)和HttpServletRequest(请求) (待更)
2020-12-30 12:28
标签:ade web服务 servlet request set tps bsp use eset web服务器接收到客户端的http请求,这对这个请求,分别创建一个代表请求的HttpServletRequest对象,代表响应的一个HttpServletResponse; 如果要获取客户端请求过来的参数:找HttpServletRequest 如果要给客户端响应一些信息:找HttpServletResponse 1.向浏览器输出信息 2.下载文件(步骤) 2.1 获取下载文件路径 2.2 下载文件的名是什么 2.3 设置让浏览器能够支持下载我们需要的东西 2.4 获取下载文件的输入流 2.5 创建缓冲区 2.6 获取OutpuitStream对象 2.7 将FileOutputstream流写入到buffer缓冲区 2.8 使用OutputStream将缓冲区中的数据输出的客户端 HttpServletResponse(响应)和HttpServletRequest(请求) (待更) 标签:ade web服务 servlet request set tps bsp use eset 原文地址:https://www.cnblogs.com/CL-King/p/13769418.html1. HttpServletResponse
1.1简单分类
负责向浏览器发送数据的方法
1.ServletOutputStream getOutputStream() throws IOException;
2.PrintWriter getWriter() throws IOException;
负责向浏览器发送响应头的方法
void setCharacterEncoding(String var1);
void setContentLength(int var1);
void setContentLengthLong(long var1);
void setContentType(String var1);
void setDateHeader(String var1, long var2);
void addDateHeader(String var1, long var2);
void setHeader(String var1, String var2);
void addHeader(String var1, String var2);
void setIntHeader(String var1, int var2);
void addIntHeader(String var1, int var2);
响应的状态码
int SC_CONTINUE = 100;
int SC_SWITCHING_PROTOCOLS = 101;
int SC_OK = 200;
int SC_CREATED = 201;
int SC_ACCEPTED = 202;
int SC_NON_AUTHORITATIVE_INFORMATION = 203;
int SC_NO_CONTENT = 204;
int SC_RESET_CONTENT = 205;
int SC_PARTIAL_CONTENT = 206;
int SC_MULTIPLE_CHOICES = 300;
int SC_MOVED_PERMANENTLY = 301;
int SC_MOVED_TEMPORARILY = 302;
int SC_FOUND = 302;
int SC_SEE_OTHER = 303;
int SC_NOT_MODIFIED = 304;
int SC_USE_PROXY = 305;
int SC_TEMPORARY_REDIRECT = 307;
int SC_BAD_REQUEST = 400;
int SC_UNAUTHORIZED = 401;
int SC_PAYMENT_REQUIRED = 402;
int SC_FORBIDDEN = 403;
int SC_NOT_FOUND = 404;
int SC_METHOD_NOT_ALLOWED = 405;
int SC_NOT_ACCEPTABLE = 406;
int SC_PROXY_AUTHENTICATION_REQUIRED = 407;
int SC_REQUEST_TIMEOUT = 408;
int SC_CONFLICT = 409;
int SC_GONE = 410;
int SC_LENGTH_REQUIRED = 411;
int SC_PRECONDITION_FAILED = 412;
int SC_REQUEST_ENTITY_TOO_LARGE = 413;
int SC_REQUEST_URI_TOO_LONG = 414;
int SC_UNSUPPORTED_MEDIA_TYPE = 415;
int SC_REQUESTED_RANGE_NOT_SATISFIABLE = 416;
int SC_EXPECTATION_FAILED = 417;
int SC_INTERNAL_SERVER_ERROR = 500;
int SC_NOT_IMPLEMENTED = 501;
int SC_BAD_GATEWAY = 502;
int SC_SERVICE_UNAVAILABLE = 503;
int SC_GATEWAY_TIMEOUT = 504;
int SC_HTTP_VERSION_NOT_SUPPORTED = 505;
1.2常见应用
2.HttpServletRequest
文章标题:HttpServletResponse(响应)和HttpServletRequest(请求) (待更)
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