pageContext有个方法 setAttribute...
据说它是javax.servlet.jsp.PageContext类的实例对象
但是在PageContext中没发现这个方法 package javax.servlet.jsp;import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.tagext.BodyContent;public abstract class PageContext extends JspContext
{
public static final int PAGE_SCOPE = 1;
public static final int REQUEST_SCOPE = 2;
public static final int SESSION_SCOPE = 3;
public static final int APPLICATION_SCOPE = 4;
public static final String PAGE = "javax.servlet.jsp.jspPage";
public static final String PAGECONTEXT = "javax.servlet.jsp.jspPageContext";
public static final String REQUEST = "javax.servlet.jsp.jspRequest";
public static final String RESPONSE = "javax.servlet.jsp.jspResponse";
public static final String CONFIG = "javax.servlet.jsp.jspConfig";
public static final String SESSION = "javax.servlet.jsp.jspSession";
public static final String OUT = "javax.servlet.jsp.jspOut";
public static final String APPLICATION = "javax.servlet.jsp.jspApplication";
public static final String EXCEPTION = "javax.servlet.jsp.jspException"; public abstract void initialize(Servlet paramServlet, ServletRequest paramServletRequest, ServletResponse paramServletResponse, String paramString, boolean paramBoolean1, int paramInt, boolean paramBoolean2)
throws IOException, IllegalStateException, IllegalArgumentException; public abstract void release(); public abstract HttpSession getSession(); public abstract Object getPage(); public abstract ServletRequest getRequest(); public abstract ServletResponse getResponse(); public abstract Exception getException(); public abstract ServletConfig getServletConfig(); public abstract ServletContext getServletContext(); public abstract void forward(String paramString)
throws ServletException, IOException; public abstract void include(String paramString)
throws ServletException, IOException; public abstract void include(String paramString, boolean paramBoolean)
throws ServletException, IOException; public abstract void handlePageException(Exception paramException)
throws ServletException, IOException; public abstract void handlePageException(Throwable paramThrowable)
throws ServletException, IOException; public BodyContent pushBody()
{
return null;
} public ErrorData getErrorData()
{
return new ErrorData((Throwable)getRequest().getAttribute("javax.servlet.error.exception"), ((Integer)getRequest().getAttribute("javax.servlet.error.status_code")).intValue(), (String)getRequest().getAttribute("javax.servlet.error.request_uri"), (String)getRequest().getAttribute("javax.servlet.error.servlet_name"));
}
}再看看它继承的JspContext 也没有 求解package javax.servlet.jsp;import java.io.Writer;
import java.util.Enumeration;
import javax.el.ELContext;
import javax.servlet.jsp.el.ExpressionEvaluator;
import javax.servlet.jsp.el.VariableResolver;public abstract class JspContext
{
public abstract void setAttribute(String paramString, Object paramObject); public abstract void setAttribute(String paramString, Object paramObject, int paramInt); public abstract Object getAttribute(String paramString); public abstract Object getAttribute(String paramString, int paramInt); public abstract Object findAttribute(String paramString); public abstract void removeAttribute(String paramString); public abstract void removeAttribute(String paramString, int paramInt); public abstract int getAttributesScope(String paramString); public abstract Enumeration<String> getAttributeNamesInScope(int paramInt); public abstract JspWriter getOut(); /** @deprecated */
public abstract ExpressionEvaluator getExpressionEvaluator(); /** @deprecated */
public abstract VariableResolver getVariableResolver(); public abstract ELContext getELContext(); public JspWriter pushBody(Writer writer)
{
return null;
} public JspWriter popBody()
{
return null;
}
}
据说它是javax.servlet.jsp.PageContext类的实例对象
但是在PageContext中没发现这个方法 package javax.servlet.jsp;import java.io.IOException;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.jsp.tagext.BodyContent;public abstract class PageContext extends JspContext
{
public static final int PAGE_SCOPE = 1;
public static final int REQUEST_SCOPE = 2;
public static final int SESSION_SCOPE = 3;
public static final int APPLICATION_SCOPE = 4;
public static final String PAGE = "javax.servlet.jsp.jspPage";
public static final String PAGECONTEXT = "javax.servlet.jsp.jspPageContext";
public static final String REQUEST = "javax.servlet.jsp.jspRequest";
public static final String RESPONSE = "javax.servlet.jsp.jspResponse";
public static final String CONFIG = "javax.servlet.jsp.jspConfig";
public static final String SESSION = "javax.servlet.jsp.jspSession";
public static final String OUT = "javax.servlet.jsp.jspOut";
public static final String APPLICATION = "javax.servlet.jsp.jspApplication";
public static final String EXCEPTION = "javax.servlet.jsp.jspException"; public abstract void initialize(Servlet paramServlet, ServletRequest paramServletRequest, ServletResponse paramServletResponse, String paramString, boolean paramBoolean1, int paramInt, boolean paramBoolean2)
throws IOException, IllegalStateException, IllegalArgumentException; public abstract void release(); public abstract HttpSession getSession(); public abstract Object getPage(); public abstract ServletRequest getRequest(); public abstract ServletResponse getResponse(); public abstract Exception getException(); public abstract ServletConfig getServletConfig(); public abstract ServletContext getServletContext(); public abstract void forward(String paramString)
throws ServletException, IOException; public abstract void include(String paramString)
throws ServletException, IOException; public abstract void include(String paramString, boolean paramBoolean)
throws ServletException, IOException; public abstract void handlePageException(Exception paramException)
throws ServletException, IOException; public abstract void handlePageException(Throwable paramThrowable)
throws ServletException, IOException; public BodyContent pushBody()
{
return null;
} public ErrorData getErrorData()
{
return new ErrorData((Throwable)getRequest().getAttribute("javax.servlet.error.exception"), ((Integer)getRequest().getAttribute("javax.servlet.error.status_code")).intValue(), (String)getRequest().getAttribute("javax.servlet.error.request_uri"), (String)getRequest().getAttribute("javax.servlet.error.servlet_name"));
}
}再看看它继承的JspContext 也没有 求解package javax.servlet.jsp;import java.io.Writer;
import java.util.Enumeration;
import javax.el.ELContext;
import javax.servlet.jsp.el.ExpressionEvaluator;
import javax.servlet.jsp.el.VariableResolver;public abstract class JspContext
{
public abstract void setAttribute(String paramString, Object paramObject); public abstract void setAttribute(String paramString, Object paramObject, int paramInt); public abstract Object getAttribute(String paramString); public abstract Object getAttribute(String paramString, int paramInt); public abstract Object findAttribute(String paramString); public abstract void removeAttribute(String paramString); public abstract void removeAttribute(String paramString, int paramInt); public abstract int getAttributesScope(String paramString); public abstract Enumeration<String> getAttributeNamesInScope(int paramInt); public abstract JspWriter getOut(); /** @deprecated */
public abstract ExpressionEvaluator getExpressionEvaluator(); /** @deprecated */
public abstract VariableResolver getVariableResolver(); public abstract ELContext getELContext(); public JspWriter pushBody(Writer writer)
{
return null;
} public JspWriter popBody()
{
return null;
}
}
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// 这不是吗?
这隐藏的也太深了
晾一晾 再结