{"id":632,"date":"2015-05-06T10:24:09","date_gmt":"2015-05-06T02:24:09","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=632"},"modified":"2026-08-18T11:18:19","modified_gmt":"2026-08-18T03:18:19","slug":"jsp%e7%9a%84%e5%85%ab%e4%b8%aa%e9%9a%90%e5%90%ab%e5%af%b9%e8%b1%a1","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=632","title":{"rendered":"jsp\u7684\u4e5d\u4e2a\u9690\u542b\u5bf9\u8c61"},"content":{"rendered":"
\n

JSP \u8f6c\u8bd1\u6210 Servlet \u4e4b\u540e\uff0c\u5bb9\u5668\u4f1a\u51c6\u5907\u597d\u4e5d\u4e2a\u9690\u542b\u5bf9\u8c61<\/strong>\uff0c\u9875\u9762\u91cc\u4e0d\u7528\u58f0\u660e\u5c31\u80fd\u76f4\u63a5\u7528\u3002\u5b83\u4eec\u5206\u522b\u5bf9\u5e94 page\u3001config\u3001request\u3001response\u3001out\u3001session\u3001application\u3001pageContext\u3001exception\u3002<\/p>\n

\"20161202102214\"<\/a><\/p>\n

\u8bb0\u7684\u65f6\u5019\u6309\u4f5c\u7528\u57df\u60f3\uff1apage<\/code> \u53ea\u5bf9\u5f53\u524d\u9875\uff0crequest<\/code> \u4e00\u6b21\u8bf7\u6c42\uff0csession<\/code> \u4e00\u6b21\u4f1a\u8bdd\uff0capplication<\/code> \u6574\u4e2a\u5e94\u7528\uff1bpageContext<\/code> \u80fd\u8de8\u8fd9\u56db\u4e2a\u8303\u56f4\u627e\u5c5e\u6027\u3002<\/p>\n

<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u5bf9\u8c61<\/th>\n\u5bf9\u5e94\u7c7b\u578b<\/th>\n\u4f5c\u7528\u57df \/ \u7528\u9014<\/th>\n<\/tr>\n<\/thead>\n
page<\/td>\nObject\uff08\u5f53\u524d Servlet \u5b9e\u4f8b\uff09<\/td>\n\u4ee3\u8868\u672c\u9875\u8f6c\u8bd1\u540e\u7684 Servlet<\/td>\n<\/tr>\n
config<\/td>\nServletConfig<\/td>\n\u8bfb\u672c\u9875 Servlet \u7684\u521d\u59cb\u5316\u53c2\u6570<\/td>\n<\/tr>\n
request<\/td>\nHttpServletRequest<\/td>\n\u8bf7\u6c42\u5934\u3001\u53c2\u6570\u3001Cookie<\/td>\n<\/tr>\n
response<\/td>\nHttpServletResponse<\/td>\n\u5199\u56de\u72b6\u6001\u7801\u3001\u5934\u3001\u91cd\u5b9a\u5411<\/td>\n<\/tr>\n
out<\/td>\nJspWriter<\/td>\n\u5411\u9875\u9762\u8f93\u51fa\u3001\u7ba1\u7406\u7f13\u51b2\u533a<\/td>\n<\/tr>\n
session<\/td>\nHttpSession<\/td>\n\u5f53\u524d\u7528\u6237\u4f1a\u8bdd<\/td>\n<\/tr>\n
application<\/td>\nServletContext<\/td>\n\u5e94\u7528\u7ea7\u73af\u5883\u4fe1\u606f<\/td>\n<\/tr>\n
pageContext<\/td>\nPageContext<\/td>\n\u62ff\u5176\u4ed6\u9690\u542b\u5bf9\u8c61\u3001\u8de8\u8303\u56f4\u627e\u5c5e\u6027<\/td>\n<\/tr>\n
exception<\/td>\nThrowable<\/td>\n\u4ec5\u9519\u8bef\u9875 isErrorPage=true<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e00\u3001page \u5bf9\u8c61<\/h2>\n

page<\/code> \u4ee3\u8868 JSP \u672c\u8eab\uff0c\u66f4\u51c6\u786e\u5730\u8bf4\u662f JSP \u88ab\u8f6c\u8bd1\u540e\u7684 Servlet\uff0c\u53ef\u4ee5\u8c03\u7528 Servlet \u7c7b\u4e0a\u5b9a\u4e49\u7684\u65b9\u6cd5\u3002<\/p>\n

\u4e8c\u3001config \u5bf9\u8c61<\/h2>\n

config<\/code> \u5b58\u653e Servlet \u521d\u59cb\u6570\u636e\u7ed3\u6784\uff0c\u5b9e\u73b0 javax.servlet.ServletConfig<\/code>\uff0c\u5e38\u7528\u56db\u4e2a\u65b9\u6cd5\uff1a<\/p>\n

public String getInitParameter(String name)\npublic java.util.Enumeration getInitParameterNames()\npublic ServletContext getServletContext()\npublic String getServletName()<\/code><\/pre>\n
\u4e09\u3001request \u5bf9\u8c61<\/h2>\n
\u5305\u542b\u672c\u6b21\u8bf7\u6c42\u7684\u5168\u90e8\u4fe1\u606f\uff1a\u6765\u6e90\u3001\u6807\u5934\u3001Cookie\u3001\u53c2\u6570\u3002\u5b9e\u73b0 javax.servlet.http.HttpServletRequest<\/code>\uff0c\u65b9\u6cd5\u53ef\u5206\u6210\u56db\u7c7b\u3002<\/p>\n
1. \u5b58\u53d6\u5c5e\u6027<\/h3>\n
void setAttribute(String name, Object value)\njava.util.Enumeration getAttributeNames()\nObject getAttribute(String name)\nvoid removeAttribute(String name)<\/code><\/pre>\n
2. \u53d6\u5f97\u8bf7\u6c42\u53c2\u6570<\/h3>\n
String getParameter(String name)\njava.util.Enumeration getParameterNames()\nString[] getParameterValues(String name)\njava.util.Map getParameterMap()<\/code><\/pre>\n
3. HTTP \u6807\u5934\u4e0e Cookie<\/h3>\n
String getHeader(String name)\njava.util.Enumeration getHeaderNames()\njava.util.Enumeration getHeaders(String name)\nint getIntHeader(String name)\nlong getDateHeader(String name)\nCookie[] getCookies()<\/code><\/pre>\n
4. \u5176\u4ed6\u5e38\u7528\u65b9\u6cd5<\/h3>\n
String getContextPath()          \/\/ \u7ad9\u70b9 Context \u8def\u5f84\nString getMethod()               \/\/ GET \/ POST\nString getProtocol()             \/\/ HTTP\/1.1\u3001HTTP\/1.0\nString getQueryString()          \/\/ GET \u7684\u67e5\u8be2\u4e32\nString getRequestedSessionId()\nString getRequestURI()           \/\/ \u4e0d\u542b\u67e5\u8be2\u4e32\nString getRemoteAddr()\nString getRemoteHost()\nint getRemotePort()\nString getRemoteUser()\nvoid setCharacterEncoding(String encoding)  \/\/ \u89e3\u51b3\u8868\u5355\u4e2d\u6587<\/code><\/pre>\n
\u56db\u3001response \u5bf9\u8c61<\/h2>\n
\u628a JSP \u5904\u7406\u7ed3\u679c\u4f20\u56de\u5ba2\u6237\u7aef\uff0c\u5b9e\u73b0 javax.servlet.http.HttpServletResponse<\/code>\u3002<\/p>\n
1. \u8bbe\u5b9a\u8868\u5934<\/h3>\n
void addCookie(Cookie cookie)\nvoid addDateHeader(String name, long date)\nvoid addHeader(String name, String value)\nvoid addIntHeader(String name, int value)\nvoid setDateHeader(String name, long date)\nvoid setHeader(String name, String value)\nvoid setIntHeader(String name, int value)<\/code><\/pre>\n
2. \u8bbe\u5b9a\u54cd\u5e94\u72b6\u6001\u7801<\/h3>\n
void sendError(int sc)\nvoid sendError(int sc, String msg)\nvoid setStatus(int sc)<\/code><\/pre>\n
3. URL \u91cd\u5199<\/h3>\n
String encodeRedirectURL(String url)<\/code> \u4f1a\u5bf9\u5373\u5c06\u4ea4\u7ed9 sendRedirect()<\/code> \u7684 URL \u7f16\u7801\uff0c\u4fbf\u4e8e\u5728\u5173\u95ed Cookie \u65f6\u628a Session ID \u63a5\u5230\u5730\u5740\u4e0a\u3002<\/p>\n
\u4e94\u3001out \u5bf9\u8c61<\/h2>\n
out<\/code> \u628a\u7ed3\u679c\u8f93\u51fa\u5230\u7f51\u9875\u4e0a\uff0c\u7c7b\u578b\u662f JspWriter<\/code>\uff0c\u7528\u6765\u7ba1\u7406\u8f93\u51fa\u7f13\u51b2\u533a\u548c\u8f93\u51fa\u6d41\u3002<\/p>\n
void clear()              \/\/ \u6e05\u9664\u7f13\u51b2\u533a\uff08\u5df2\u63d0\u4ea4\u5219\u629b\u5f02\u5e38\uff09\nvoid clearBuffer()        \/\/ \u6e05\u9664\u7f13\u51b2\u533a\u5185\u5bb9\nvoid close()              \/\/ \u5173\u95ed\u8f93\u51fa\u6d41\nint getBufferSize()       \/\/ \u7f13\u51b2\u533a\u5927\u5c0f\nint getRemaining()        \/\/ \u5269\u4f59\u7a7a\u95f4\nboolean isAutoFlush()     \/\/ \u6ee1\u65f6\u662f\u5426\u81ea\u52a8\u5237\u65b0\uff1bfalse \u5219\u6ee1\u65f6\u629b\u5f02\u5e38<\/code><\/pre>\n
\u516d\u3001session \u5bf9\u8c61<\/h2>\n
\u8868\u793a\u5f53\u524d\u7528\u6237\u7684\u4f1a\u8bdd\uff0c\u5b9e\u73b0 javax.servlet.http.HttpSession<\/code>\u3002<\/p>\n
long getCreationTime()\nString getId()\nlong getLastAccessedTime()\nlong getMaxInactiveInterval()\nvoid invalidate()\nboolean isNew()\nvoid setMaxInactiveInterval(int interval)<\/code><\/pre>\n
\u4e03\u3001application \u5bf9\u8c61<\/h2>\n
\u6700\u5e38\u7528\u6765\u5b58\u53d6\u73af\u5883\u4fe1\u606f\u3002\u73af\u5883\u901a\u5e38\u5b58\u5728 ServletContext<\/code> \u91cc\uff0c\u6240\u4ee5 application<\/code> \u5c31\u662f\u5f53\u524d\u5e94\u7528\u7684 Context\u3002<\/p>\n
int getMajorVersion()\nint getMinorVersion()\nString getServerInfo()\nString getMimeType(String file)\nServletContext getContext(String uripath)\nString getRealPath(String path)\nvoid log(String message)\nvoid log(String message, Throwable throwable)<\/code><\/pre>\n
\u516b\u3001pageContext \u5bf9\u8c61<\/h2>\n
pageContext<\/code> \u80fd\u62ff\u5230\u5176\u4ed6\u9690\u542b\u5bf9\u8c61\uff0c\u4e5f\u80fd\u6309\u8303\u56f4\u5b58\u53d6\u5c5e\u6027\u3002<\/p>\n
1. \u6307\u5b9a\u8303\u56f4\u5b58\u53d6\u5c5e\u6027<\/h3>\n
Object getAttribute(String name, int scope)\njava.util.Enumeration getAttributeNamesInScope(int scope)\nvoid removeAttribute(String name, int scope)\nvoid setAttribute(String name, Object value, int scope)\n\/\/ \u8303\u56f4\u5e38\u91cf\uff1aPAGE_SCOPE\u3001REQUEST_SCOPE\u3001SESSION_SCOPE\u3001APPLICATION_SCOPE<\/code><\/pre>\n
2. \u53d6\u5f97\u5176\u4ed6\u9690\u542b\u5bf9\u8c61<\/h3>\n
Exception getException()\nJspWriter getOut()\nObject getPage()\nServletRequest getRequest()\nServletResponse getResponse()\nServletConfig getServletConfig()\nServletContext getServletContext()\nHttpSession getSession()<\/code><\/pre>\n
3. \u67e5\u627e\u4e0e\u5220\u9664\u5c5e\u6027<\/h3>\n
Object getAttribute(String name, int scope)\njava.util.Enumeration getAttributeNamesInScope(int scope)\nint getAttributesScope(String name)\nvoid removeAttribute(String name)\nvoid removeAttribute(String name, int scope)\nvoid setAttribute(String name, Object value, int scope)\nObject findAttribute(String name)   \/\/ \u6309 page\u2192request\u2192session\u2192application \u67e5\u627e<\/code><\/pre>\n
\u4e5d\u3001exception \u5bf9\u8c61<\/h2>\n
\u8981\u4f7f\u7528 exception<\/code>\uff0c\u5fc5\u987b\u5728 page \u6307\u4ee4\u91cc\u6253\u5f00\u9519\u8bef\u9875\uff1a<%@ page isErrorPage=\"true\" %><\/code>\u3002<\/p>\n
getMessage()\ngetLocalizedMessage()\nprintStackTrace(new java.io.PrintWriter(out))<\/code><\/pre>\n
\n
\u4e00\u53e5\u8bdd\u603b\u7ed3\uff1a\u4e5d\u4e2a\u9690\u542b\u5bf9\u8c61\u5c31\u662f\u8f6c\u8bd1\u540e\u7684 Servlet \u73af\u5883\uff1a\u5148\u5206\u6e05\u56db\u4e2a\u4f5c\u7528\u57df\uff0c\u518d\u7528 pageContext \u628a\u5b83\u4eec\u4e32\u8d77\u6765\u3002<\/strong><\/p>\n<\/blockquote>\n<\/section>\n","protected":false},"excerpt":{"rendered":"
JSP \u8f6c\u8bd1\u6210 Servlet \u4e4b\u540e\uff0c\u5bb9\u5668\u4f1a\u51c6\u5907\u597d\u4e5d\u4e2a\u9690\u542b\u5bf9\u8c61\uff0c\u9875\u9762\u91cc\u4e0d\u7528\u58f0\u660e\u5c31\u80fd\u76f4\u63a5\u7528\u3002\u5b83\u4eec\u5206\u522b\u5bf9\u5e94 pag […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[60],"tags":[183,182],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/632"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=632"}],"version-history":[{"count":3,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/632\/revisions"}],"predecessor-version":[{"id":1784,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/632\/revisions\/1784"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}