Java JspWriter.print方法代碼示例

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/**
 * Write the specified text as the response to the writer associated with
 * this page.  <strong>WARNING</strong> - If you are writing body content
 * from the <code>doAfterBody()</code> method of a custom tag class that
 * implements <code>BodyTag</code>, you should be calling
 * <code>writePrevious()</code> instead.
 *
 * @param pageContext The PageContext object for this page
 * @param text The text to be written
 *
 * @exception JspException if an input/output error occurs (already saved)
 */
public void write(PageContext pageContext, String text)
        throws JspException {

    JspWriter writer = pageContext.getOut();

    try {
        writer.print(text);

    } catch (IOException e) {
        TagUtils.getInstance().saveException(pageContext, e);
        throw new JspException
                (messages.getMessage("write.io", e.toString()));
    }

}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/**
 * Write the specified text as the response to the writer associated with
 * the body content for the tag within which we are currently nested.
 *
 * @param pageContext The PageContext object for this page
 * @param text The text to be written
 *
 * @exception JspException if an input/output error occurs (already saved)
 */
public void writePrevious(PageContext pageContext, String text)
        throws JspException {

    JspWriter writer = pageContext.getOut();
    if (writer instanceof BodyContent) {
        writer = ((BodyContent) writer).getEnclosingWriter();
    }

    try {
        writer.print(text);

    } catch (IOException e) {
        TagUtils.getInstance().saveException(pageContext, e);
        throw new JspException
                (messages.getMessage("write.io", e.toString()));
    }

}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
@Override
   public int doStartTag() throws JspException {
HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();

String path = WebUtil.getBaseServerURL() + request.getContextPath();
if (!path.endsWith("/")) {
    path += "/";
}

try {
    JspWriter writer = pageContext.getOut();
    writer.print(path);
} catch (IOException e) {
    WebAppURLTag.log.error("ServerURLTag unable to write out server URL due to IOException. ", e);
    throw new JspException(e);
}
return Tag.SKIP_BODY;
   }
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
@Override
   public int doStartTag() throws JspException {
String serverURL = Configuration.get(ConfigurationKeys.SERVER_URL);
serverURL = (serverURL != null ? serverURL.trim() : null);
if (serverURL != null && serverURL.length() > 0) {
    JspWriter writer = pageContext.getOut();
    try {
	writer.print(serverURL);
    } catch (IOException e) {
	log.error("ServerURLTag unable to write out server URL due to IOException. ", e);
	throw new JspException(e);
    }
} else {
    log.warn("ServerURLTag unable to write out server URL as it is missing from the configuration file.");
}

return SKIP_BODY;
   }
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
@Override
public int doEndTag() throws JspException {
    JspWriter out = pageContext.getOut();

    try {
        if (!"-1".equals(objectValue)) {
            out.print(objectValue);
        } else if (!"-1".equals(stringValue)) {
            out.print(stringValue);
        } else if (longValue != -1) {
            out.print(longValue);
        } else if (doubleValue != -1) {
            out.print(doubleValue);
        } else {
            out.print("-1");
        }
    } catch (IOException ex) {
        throw new JspTagException("IOException: " + ex.toString(), ex);
    }
    return super.doEndTag();
}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/** Looks up the request stream for input parameters and then generates appropriate metaData. */
public static void perform(HttpServletRequest request, JspWriter out, ServletContext servletContext) throws Exception {
    // Create a parameter Map from the input request
    Map<String, String> parameters = getParameters(request);
    if (log.isDebugEnabled())
        log.debug("Input: " + parameters);

    // Error out if parameters are not passed
    if (parameters == null) {
        String m = "MetaData cannot be generated since parameters have not been passed";
        log.error(m);
        throw new IllegalArgumentException(m);
    }

    // Obtain metaData
    String metaData = c_enableCaching ? obtainMetaData(parameters, servletContext) : generateMetaData(parameters, servletContext);
    out.print(metaData);
}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
public static boolean output(JspWriter out, Object input, String value,
        String defaultValue, boolean escapeXml) throws IOException {
    if (input instanceof Reader) {
        char[] buffer = new char[8096];
        int read = 0;
        while (read != -1) {
            read = ((Reader) input).read(buffer);
            if (read != -1) {
                if (escapeXml) {
                    String escaped = Util.escapeXml(buffer, read);
                    if (escaped == null) {
                        out.write(buffer, 0, read);
                    } else {
                        out.print(escaped);
                    }
                } else {
                    out.write(buffer, 0, read);
                }
            }
        }
        return true;
    } else {
        String v = value != null ? value : defaultValue;
        if (v != null) {
            if(escapeXml){
                v = Util.escapeXml(v);
            }
            out.write(v);
            return true;
        } else {
            return false;
        }
    }
}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/**
 * Render the JavaScript for to perform validations based on the form name.
 *
 * @exception JspException if a JSP exception has occurred
 */
public int doStartTag() throws JspException {

    JspWriter writer = pageContext.getOut();
    try {
        writer.print(this.renderJavascript());

    } catch (IOException e) {
        throw new JspException(e.getMessage());
    }

    return EVAL_BODY_TAG;

}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/**
 * Render the end of this form.
 *
 * @exception JspException if a JSP exception has occurred
 */
public int doEndTag() throws JspException {

    // Remove the page scope attributes we created
    pageContext.removeAttribute(Constants.BEAN_KEY, PageContext.REQUEST_SCOPE);
    pageContext.removeAttribute(Constants.FORM_KEY, PageContext.REQUEST_SCOPE);

    // Render a tag representing the end of our current form
    StringBuffer results = new StringBuffer("</form>");

    // Render JavaScript to set the input focus if required
    if (this.focus != null) {
        results.append(this.renderFocusJavascript());
    }

    // Print this value to our output writer
    JspWriter writer = pageContext.getOut();
    try {
        writer.print(results.toString());
    } catch (IOException e) {
        throw new JspException(messages.getMessage("common.io", e.toString()));
    }

    // Continue processing this page
    return (EVAL_PAGE);

}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
@Override
   public int doEndTag() throws JspException {

String serverURL = Configuration.get(ConfigurationKeys.SERVER_URL);
serverURL = serverURL == null ? null : serverURL.trim();

try {
    if (userId != null && userId.length() > 0) {
	String code = null;
	HashMap<String, String> cache = getPortraitCache();
	code = cache.get(userId);

	if (code == null) {
	    Integer userIdInt = Integer.decode(userId);
	    User user = (User) getUserManagementService().findById(User.class, userIdInt);
	    boolean isHover = (hover != null ? Boolean.valueOf(hover) : false);
	    if ( isHover ) {
		code = buildHoverUrl(user);
	    } else {
		code = buildDivUrl(user);
	    }
	    cache.put(userId, code);
	}

	JspWriter writer = pageContext.getOut();
	writer.print(code);
    }

} catch (NumberFormatException nfe) {
    PortraitTag.log.error("PortraitId unable to write out portrait details as userId is invalid. " + userId,
	    nfe);
} catch (IOException ioe) {
    PortraitTag.log.error(
	    "PortraitId unable to write out portrait details due to IOException. UserId is " + userId, ioe);
} catch (Exception e) {
    PortraitTag.log.error(
	    "PortraitId unable to write out portrait details due to an exception. UserId is " + userId, e);
}
return Tag.SKIP_BODY;
   }
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
@Override
   public int doStartTag() throws JspException {
JspWriter writer = pageContext.getOut();
try {
    writer.print(Configuration.get(getKey()));
} catch (IOException e) {
    log.error("Error in configuration tag", e);
    throw new JspException(e);
}
return SKIP_BODY;
   }
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
@Override
public int doEndTag() throws JspException {
    if ((jspFile.indexOf( ".." ) >= 0) ||
        (jspFile.toUpperCase(Locale.ENGLISH).indexOf("/WEB-INF/") != 0) ||
        (jspFile.toUpperCase(Locale.ENGLISH).indexOf("/META-INF/") != 0))
        throw new JspTagException("Invalid JSP file " + jspFile);

    InputStream in = pageContext.getServletContext().getResourceAsStream(
            jspFile);
    if (in == null)
        throw new JspTagException("Unable to find JSP file: " + jspFile);

    try {
        JspWriter out = pageContext.getOut();
        out.println("<body>");
        out.println("<pre>");
        for (int ch = in.read(); ch != -1; ch = in.read())
            if (ch == '<')
                out.print("&lt;");
            else
                out.print((char) ch);
        out.println("</pre>");
        out.println("</body>");
    } catch (IOException ex) {
        throw new JspTagException("IOException: " + ex.toString());
    } finally {
        try {
            in.close();
        } catch (IOException e) {
            throw new JspTagException("Can't close inputstream: ", e);
        }
    }
    return super.doEndTag();
}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
public static boolean output(JspWriter out, Object input, String value, String defaultValue, boolean escapeXml)
		throws IOException {
	if (input instanceof Reader) {
		char[] buffer = new char[8096];
		int read = 0;
		while (read != -1) {
			read = ((Reader) input).read(buffer);
			if (read != -1) {
				if (escapeXml) {
					String escaped = Util.escapeXml(buffer, read);
					if (escaped == null) {
						out.write(buffer, 0, read);
					} else {
						out.print(escaped);
					}
				} else {
					out.write(buffer, 0, read);
				}
			}
		}
		return true;
	} else {
		String v = value != null ? value : defaultValue;
		if (v != null) {
			if (escapeXml) {
				v = Util.escapeXml(v);
			}
			out.write(v);
			return true;
		} else {
			return false;
		}
	}
}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/** Called from the doEndTag()
 */
public void otherDoEndTagOperations() throws JspException {
    
    super.otherDoEndTagOperations();
    
    // Generate the HTML
    if (!m_propertyRuleIntrospector.isHidden() && m_model != null) {
        String html = null;
        if (m_displayOnly) {
            // Just display the text for a readOnly field
            html = getDisplayOnlyHtml();
        } else {
            String classPrefix = m_propertyRuleIntrospector.isMandatory() ? "<span class=\"dropdownMandatoryPrefix\">&nbsp;</span>" : "<span class=\"dropdownOptionalPrefix\">&nbsp;</span>";
            String classSuffix = m_propertyRuleIntrospector.isMandatory() ? "<span class=\"dropdownMandatorySuffix\">&nbsp;</span>" : "<span class=\"dropdownOptionalSuffix\">&nbsp;</span>";
            html = classPrefix + getHtml() + classSuffix;
            html += getJavascript();
        }
        
        if (html != null) {
            // Write the HTML
            JspWriter out = pageContext.getOut();
            try {
                out.print(html);
            } catch (IOException e) {
                String str = "Exception in writing the " + TAG_NAME;
                log.error(str, e);
                throw new JspWriteRuntimeException(str, e);
            }
        }
    }
}
 

import javax.servlet.jsp.JspWriter; //導入方法依賴的package包/類
/** This generates the HTML for the tag, unless there is a layout, in which case it is sent there.
 * @param out The JspWriter object.
 * @param bodyContent The BodyContent object.
 * @throws IOException if any I/O error occurs.
 */
public void writeTagBodyContent(JspWriter out, BodyContent bodyContent) throws IOException {
    //log.debug("writeTagBodyContent: " + this.toString());
    if (m_layoutTag != null) {
        m_layoutTag.addSectionContent(m_id,bodyContent.getString());
    } else {
        // Generate a folding section
        if (m_containsContent || (!m_hideIfNoWidgets)) {
            out.print( LayoutTag.createFoldingSection( getId(), getLabel(), getLabelEditorLink(), 
                    isClosed(), bodyContent.getString()));
        }
    }
    // clear the body content for the next time through.
    bodyContent.clearBody();
}