ServletResponse简介

ServletResponse简介 (Introduction to ServletResponse)

Servlet API provides two important interfaces ServletResponse and HttpServletResponse to assist in sending response to client.

Servlet API提供了两个重要的接口ServletResponse和HttpServletResponse来帮助将响应发送到客户端。

Methods	Description
PrintWriter `getWriter()`	returns a PrintWriter object that can send character text to the client.
void `setBufferSize(int size)`	Sets the preferred buffer size for the body of the response
void `setContentLength(int len)`	Sets the length of the content body in the response In HTTP servlets, this method sets the HTTP Content-Length header
void `setContentType(String type)`	sets the content type of the response being sent to the client before sending the respond.
void `setBufferSize(int size)`	sets the preferred buffer size for the body of the response.
boolean `isCommitted()`	returns a boolean indicating if the response has been committed
void `setLocale(Locale loc)`	sets the locale of the response, if the response has not been committed yet.

方法	描述
PrintWriter `getWriter()`	返回一个PrintWriter对象，该对象可以将字符文本发送到客户端。
void `setBufferSize(int size)`	设置响应主体的首选缓冲区大小
void `setContentLength(int len)`	设置响应中内容主体的长度在HTTP servlet中，此方法设置HTTP Content-Length标头
void `setContentType(String type)`	设置发送响应之前发送给客户端的响应的内容类型。
void `setBufferSize(int size)`	设置响应主体的首选缓冲区大小。
boolean `isCommitted()`	返回一个布尔值，指示响应是否已提交
`setLocale(Locale loc)`无效	设置响应的语言环境（如果尚未提交响应）。

HttpServletResponse interface adds the methods that relates to the HTTP response.

HttpServletResponse接口添加了与HTTP响应相关的方法。

Methods	Description
void `addCookie(Cookie cookie)`	adds the specified cookie to the response.
void `sendRedirect(String location)`	Sends a temporary redirect response to the client using the specified redirect location URL and clears the buffer
int `getStatus()`	gets the current status code of this response
String `getHeader(String name)`	gets the value of the response header with the given name.
void `setHeader(String name, String value)`	sets a response header with the given name and value
void `setStatus(int sc)`	sets the status code for this response
void `sendError(int sc, String msg)`	sends an error response to the client using the specified status and clears the buffer

方法	描述
无效`addCookie(Cookie cookie)`	将指定的cookie添加到响应中。
void `sendRedirect(String location)`	使用指定的重定向位置URL向客户端发送临时重定向响应并清除缓冲区
int `getStatus()`	获取此响应的当前状态代码
字符串`getHeader(String name)`	获取具有给定名称的响应头的值。
void `setHeader(String name, String value)`	设置具有给定名称和值的响应头
无效`setStatus(int sc)`	设置此响应的状态码
void `sendError(int sc, String msg)`	使用指定的状态向客户端发送错误响应并清除缓冲区

翻译自: https://www.studytonight.com/servlet/servlet-response.php