/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.jasper.runtime;
import java.beans.PropertyEditor;
import java.beans.PropertyEditorManager;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.URLEncoder;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.Enumeration;
import jakarta.el.VariableMapper;
import jakarta.servlet.RequestDispatcher;
import jakarta.servlet.ServletException;
import jakarta.servlet.ServletRequest;
import jakarta.servlet.ServletResponse;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.jsp.JspException;
import jakarta.servlet.jsp.JspWriter;
import jakarta.servlet.jsp.PageContext;
import jakarta.servlet.jsp.tagext.BodyContent;
import jakarta.servlet.jsp.tagext.BodyTag;
import jakarta.servlet.jsp.tagext.Tag;
import org.apache.jasper.JasperException;
import org.apache.jasper.compiler.Localizer;
import org.apache.juli.logging.Log;
import org.apache.juli.logging.LogFactory;
import org.apache.tomcat.InstanceManager;
/**
* Bunch of util methods that are used by code generated for useBean, getProperty and setProperty.
*/
public class JspRuntimeLibrary {
public static final boolean GRAAL;
static {
boolean result = false;
try {
Class<?> nativeImageClazz = Class.forName("org.graalvm.nativeimage.ImageInfo");
result = nativeImageClazz.getMethod("inImageCode").invoke(null) != null;
// Note: This will also be true for the Graal substrate VM
} catch (ClassNotFoundException e) {
// Must be Graal
} catch (ReflectiveOperationException | IllegalArgumentException e) {
// Should never happen
}
GRAAL = result || System.getProperty("org.graalvm.nativeimage.imagecode") != null;
}
/**
* Returns the value of the jakarta.servlet.error.exception request attribute value, if present, otherwise the value
* of the jakarta.servlet.jsp.jspException request attribute value. This method is called at the beginning of the
* generated servlet code for a JSP error page, when the "exception" implicit scripting language variable is
* initialized.
*
* @param request The Servlet request
*
* @return the throwable in the error attribute if any
*/
public static Throwable getThrowable(ServletRequest request) {
Throwable error = (Throwable) request.getAttribute(RequestDispatcher.ERROR_EXCEPTION);
if (error == null) {
error = (Throwable) request.getAttribute(PageContext.EXCEPTION);
if (error != null) {
/*
* The only place that sets JSP_EXCEPTION is PageContextImpl.handlePageException(). It really should set
* SERVLET_EXCEPTION, but that would interfere with the ErrorReportValve. Therefore, if JSP_EXCEPTION is
* set, we need to set SERVLET_EXCEPTION.
*/
request.setAttribute(RequestDispatcher.ERROR_EXCEPTION, error);
}
}
return error;
}
public static boolean coerceToBoolean(String s) {
if (s == null || s.isEmpty()) {
return false;
} else {
return Boolean.parseBoolean(s);
}
}
public static byte coerceToByte(String s) {
if (s == null || s.isEmpty()) {
return (byte) 0;
} else {
return Byte.parseByte(s);
}
}
public static char coerceToChar(String s) {
if (s == null || s.isEmpty()) {
return (char) 0;
} else {
return s.charAt(0);
}
}
public static double coerceToDouble(String s) {
if (s == null || s.isEmpty()) {
return 0;
} else {
return Double.parseDouble(s);
}
}
public static float coerceToFloat(String s) {
if (s == null || s.isEmpty()) {
return 0;
} else {
return Float.parseFloat(s);
}
}
public static int coerceToInt(String s) {
if (s == null || s.isEmpty()) {
return 0;
} else {
return Integer.parseInt(s);
}
}
public static short coerceToShort(String s) {
if (s == null || s.isEmpty()) {
return (short) 0;
} else {
return Short.parseShort(s);
}
}
public static long coerceToLong(String s) {
if (s == null || s.isEmpty()) {
return 0;
} else {
return Long.parseLong(s);
}
}
public static Object coerce(String s, Class<?> target) {
boolean isNullOrEmpty = (s == null || s.isEmpty());
if (target == Boolean.class) {
if (isNullOrEmpty) {
s = "false";
}
return Boolean.valueOf(s);
} else if (target == Byte.class) {
if (isNullOrEmpty) {
return Byte.valueOf((byte) 0);
} else {
return Byte.valueOf(s);
}
} else if (target == Character.class) {
if (isNullOrEmpty) {
return Character.valueOf((char) 0);
} else {
@SuppressWarnings("null")
Character result = Character.valueOf(s.charAt(0));
return result;
}
} else if (target == Double.class) {
if (isNullOrEmpty) {
return Double.valueOf(0);
} else {
return Double.valueOf(s);
}
} else if (target == Float.class) {
if (isNullOrEmpty) {
return Float.valueOf(0);
} else {
return Float.valueOf(s);
}
} else if (target == Integer.class) {
if (isNullOrEmpty) {
return Integer.valueOf(0);
} else {
return Integer.valueOf(s);
}
} else if (target == Short.class) {
if (isNullOrEmpty) {
return Short.valueOf((short) 0);
} else {
return Short.valueOf(s);
}
} else if (target == Long.class) {
if (isNullOrEmpty) {
return Long.valueOf(0);
} else {
return Long.valueOf(s);
}
} else {
return null;
}
}
public static Object convert(String propertyName, String s, Class<?> t, Class<?> propertyEditorClass)
throws JasperException {
try {
if (s == null) {
if (t.equals(Boolean.class) || t.equals(Boolean.TYPE)) {
s = "false";
} else {
return null;
}
}
if (propertyEditorClass != null) {
return getValueFromBeanInfoPropertyEditor(t, propertyName, s, propertyEditorClass);
} else if (t.equals(Boolean.class) || t.equals(Boolean.TYPE)) {
return Boolean.valueOf(s);
} else if (t.equals(Byte.class) || t.equals(Byte.TYPE)) {
if (s.isEmpty()) {
return Byte.valueOf((byte) 0);
} else {
return Byte.valueOf(s);
}
} else if (t.equals(Character.class) || t.equals(Character.TYPE)) {
if (s.isEmpty()) {
return Character.valueOf((char) 0);
} else {
return Character.valueOf(s.charAt(0));
}
} else if (t.equals(Double.class) || t.equals(Double.TYPE)) {
if (s.isEmpty()) {
return Double.valueOf(0);
} else {
return Double.valueOf(s);
}
} else if (t.equals(Integer.class) || t.equals(Integer.TYPE)) {
if (s.isEmpty()) {
return Integer.valueOf(0);
} else {
return Integer.valueOf(s);
}
} else if (t.equals(Float.class) || t.equals(Float.TYPE)) {
if (s.isEmpty()) {
return Float.valueOf(0);
} else {
return Float.valueOf(s);
}
} else if (t.equals(Long.class) || t.equals(Long.TYPE)) {
if (s.isEmpty()) {
return Long.valueOf(0);
} else {
return Long.valueOf(s);
}
} else if (t.equals(Short.class) || t.equals(Short.TYPE)) {
if (s.isEmpty()) {
return Short.valueOf((short) 0);
} else {
return Short.valueOf(s);
}
} else if (t.equals(String.class)) {
return s;
} else if (t.getName().equals("java.lang.Object")) {
return new String(s);
} else {
return getValueFromPropertyEditorManager(t, propertyName, s);
}
} catch (Exception e) {
throw new JasperException(e);
}
}
public static void introspect(Object bean, ServletRequest request) throws JasperException {
Enumeration<String> e = request.getParameterNames();
while (e.hasMoreElements()) {
String name = e.nextElement();
String value = request.getParameter(name);
introspecthelper(bean, name, value, request, name, true);
}
}
public static void introspecthelper(Object bean, String prop, String value, ServletRequest request, String param,
boolean ignoreMethodNF) throws JasperException {
Method method = null;
Class<?> type = null;
Class<?> propertyEditorClass = null;
try {
if (GRAAL) {
method = getWriteMethod(bean.getClass(), prop);
if (method.getParameterTypes().length > 0) {
type = method.getParameterTypes()[0];
}
} else {
java.beans.BeanInfo info = java.beans.Introspector.getBeanInfo(bean.getClass());
if (info != null) {
java.beans.PropertyDescriptor[] pd = info.getPropertyDescriptors();
for (java.beans.PropertyDescriptor propertyDescriptor : pd) {
if (propertyDescriptor.getName().equals(prop)) {
method = propertyDescriptor.getWriteMethod();
type = propertyDescriptor.getPropertyType();
propertyEditorClass = propertyDescriptor.getPropertyEditorClass();
break;
}
}
}
}
if (method != null && type != null) {
if (type.isArray()) {
if (request == null) {
throw new JasperException(Localizer.getMessage("jsp.error.beans.setproperty.noindexset"));
}
Class<?> t = type.getComponentType();
String[] values = request.getParameterValues(param);
// XXX Please check.
if (values == null) {
return;
}
if (t.equals(String.class)) {
method.invoke(bean, new Object[] { values });
} else {
createTypedArray(prop, bean, method, values, t, propertyEditorClass);
}
} else {
if (value == null || (param != null && value.isEmpty())) {
return;
}
Object oval = convert(prop, value, type, propertyEditorClass);
if (oval != null) {
method.invoke(bean, oval);
}
}
}
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
if (!ignoreMethodNF && (method == null)) {
if (type == null) {
throw new JasperException(
Localizer.getMessage("jsp.error.beans.noproperty", prop, bean.getClass().getName()));
} else {
throw new JasperException(Localizer.getMessage("jsp.error.beans.nomethod.setproperty", prop,
type.getName(), bean.getClass().getName()));
}
}
}
// -------------------------------------------------------------------
// functions to convert builtin Java data types to string.
// -------------------------------------------------------------------
public static String toString(Object o) {
return String.valueOf(o);
}
public static String toString(byte b) {
return Byte.toString(b);
}
public static String toString(boolean b) {
return Boolean.toString(b);
}
public static String toString(short s) {
return Short.toString(s);
}
public static String toString(int i) {
return Integer.toString(i);
}
public static String toString(float f) {
return Float.toString(f);
}
public static String toString(long l) {
return Long.toString(l);
}
public static String toString(double d) {
return Double.toString(d);
}
public static String toString(char c) {
return Character.toString(c);
}
/**
* Create a typed array. This is a special case where params are passed through the request and the property is
* indexed.
*
* @param propertyName The property name
* @param bean The bean
* @param method The method
* @param values Array values
* @param t The class
* @param propertyEditorClass The editor for the property
*
* @throws JasperException An error occurred
*/
public static void createTypedArray(String propertyName, Object bean, Method method, String[] values, Class<?> t,
Class<?> propertyEditorClass) throws JasperException {
try {
if (propertyEditorClass != null) {
Object[] tmpval = new Integer[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = getValueFromBeanInfoPropertyEditor(t, propertyName, values[i], propertyEditorClass);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Integer.class)) {
Integer[] tmpval = new Integer[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Integer.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Byte.class)) {
Byte[] tmpval = new Byte[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Byte.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Boolean.class)) {
Boolean[] tmpval = new Boolean[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Boolean.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Short.class)) {
Short[] tmpval = new Short[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Short.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Long.class)) {
Long[] tmpval = new Long[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Long.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Double.class)) {
Double[] tmpval = new Double[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Double.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Float.class)) {
Float[] tmpval = new Float[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Float.valueOf(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(Character.class)) {
Character[] tmpval = new Character[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Character.valueOf(values[i].charAt(0));
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(int.class)) {
int[] tmpval = new int[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Integer.parseInt(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(byte.class)) {
byte[] tmpval = new byte[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Byte.parseByte(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(boolean.class)) {
boolean[] tmpval = new boolean[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Boolean.parseBoolean(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(short.class)) {
short[] tmpval = new short[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Short.parseShort(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(long.class)) {
long[] tmpval = new long[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Long.parseLong(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(double.class)) {
double[] tmpval = new double[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Double.parseDouble(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(float.class)) {
float[] tmpval = new float[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = Float.parseFloat(values[i]);
}
method.invoke(bean, new Object[] { tmpval });
} else if (t.equals(char.class)) {
char[] tmpval = new char[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = values[i].charAt(0);
}
method.invoke(bean, new Object[] { tmpval });
} else {
Object[] tmpval = new Integer[values.length];
for (int i = 0; i < values.length; i++) {
tmpval[i] = getValueFromPropertyEditorManager(t, propertyName, values[i]);
}
method.invoke(bean, new Object[] { tmpval });
}
} catch (RuntimeException | ReflectiveOperationException ex) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(ex);
ExceptionUtils.handleThrowable(thr);
throw new JasperException("error in invoking method", ex);
}
}
/**
* Escape special shell characters.
*
* @param unescString The string to shell-escape
*
* @return The escaped shell string.
*/
public static String escapeQueryString(String unescString) {
if (unescString == null) {
return null;
}
StringBuilder escStringBuilder = new StringBuilder();
String shellSpChars = "&;`'\"|*?~<>^()[]{}$\\ ";
for (int index = 0; index < unescString.length(); index++) {
char nextChar = unescString.charAt(index);
if (shellSpChars.indexOf(nextChar) != -1) {
escStringBuilder.append('\\');
}
escStringBuilder.append(nextChar);
}
return escStringBuilder.toString();
}
public static Object handleGetProperty(Object o, String prop) throws JasperException {
if (o == null) {
throw new JasperException(Localizer.getMessage("jsp.error.beans.nullbean"));
}
Object value;
try {
Method method = getReadMethod(o.getClass(), prop);
value = method.invoke(o, (Object[]) null);
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
return value;
}
// handles <jsp:setProperty> with EL expression for 'value' attribute
public static void handleSetPropertyExpression(Object bean, String prop, String expression, PageContext pageContext,
ProtectedFunctionMapper functionMapper) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, PageContextImpl.proprietaryEvaluate(expression, method.getParameterTypes()[0],
pageContext, functionMapper));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, Object value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, value);
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, int value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Integer.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, short value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Short.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, long value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Long.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, double value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Double.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, float value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Float.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, char value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Character.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, byte value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Byte.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
public static void handleSetProperty(Object bean, String prop, boolean value) throws JasperException {
try {
Method method = getWriteMethod(bean.getClass(), prop);
method.invoke(bean, Boolean.valueOf(value));
} catch (Exception e) {
Throwable thr = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(thr);
throw new JasperException(e);
}
}
/**
* Reverse of Introspector.decapitalize.
*
* @param name The name
*
* @return the capitalized string
*/
public static String capitalize(String name) {
if (name == null || name.isEmpty()) {
return name;
}
char[] chars = name.toCharArray();
chars[0] = Character.toUpperCase(chars[0]);
return new String(chars);
}
public static Method getWriteMethod(Class<?> beanClass, String prop) throws JasperException {
Method result = null;
Class<?> type = null;
if (GRAAL) {
String setter = "set" + capitalize(prop);
Method[] methods = beanClass.getMethods();
for (Method method : methods) {
if (setter.equals(method.getName())) {
return method;
}
}
} else {
try {
java.beans.BeanInfo info = java.beans.Introspector.getBeanInfo(beanClass);
java.beans.PropertyDescriptor[] pd = info.getPropertyDescriptors();
for (java.beans.PropertyDescriptor propertyDescriptor : pd) {
if (propertyDescriptor.getName().equals(prop)) {
result = propertyDescriptor.getWriteMethod();
type = propertyDescriptor.getPropertyType();
break;
}
}
} catch (Exception e) {
throw new JasperException(e);
}
}
if (result == null) {
if (type == null) {
throw new JasperException(
Localizer.getMessage("jsp.error.beans.noproperty", prop, beanClass.getName()));
} else {
throw new JasperException(Localizer.getMessage("jsp.error.beans.nomethod.setproperty", prop,
type.getName(), beanClass.getName()));
}
}
return result;
}
public static Method getReadMethod(Class<?> beanClass, String prop) throws JasperException {
Method result = null;
Class<?> type = null;
if (GRAAL) {
String setter = "get" + capitalize(prop);
Method[] methods = beanClass.getMethods();
for (Method method : methods) {
if (setter.equals(method.getName())) {
return method;
}
}
} else {
try {
java.beans.BeanInfo info = java.beans.Introspector.getBeanInfo(beanClass);
java.beans.PropertyDescriptor[] pd = info.getPropertyDescriptors();
for (java.beans.PropertyDescriptor propertyDescriptor : pd) {
if (propertyDescriptor.getName().equals(prop)) {
result = propertyDescriptor.getReadMethod();
type = propertyDescriptor.getPropertyType();
break;
}
}
} catch (Exception e) {
throw new JasperException(e);
}
}
if (result == null) {
if (type == null) {
throw new JasperException(
Localizer.getMessage("jsp.error.beans.noproperty", prop, beanClass.getName()));
} else {
throw new JasperException(Localizer.getMessage("jsp.error.beans.nomethod", prop, beanClass.getName()));
}
}
return result;
}
// *********************************************************************
// PropertyEditor Support
public static Object getValueFromBeanInfoPropertyEditor(Class<?> attrClass, String attrName, String attrValue,
Class<?> propertyEditorClass) throws JasperException {
try {
PropertyEditor pe = (PropertyEditor) propertyEditorClass.getConstructor().newInstance();
pe.setAsText(attrValue);
return pe.getValue();
} catch (Exception e) {
if (attrValue.isEmpty()) {
return null;
} else {
throw new JasperException(Localizer.getMessage("jsp.error.beans.property.conversion", attrValue,
attrClass.getName(), attrName, e.getMessage()));
}
}
}
public static Object getValueFromPropertyEditorManager(Class<?> attrClass, String attrName, String attrValue)
throws JasperException {
try {
PropertyEditor propEditor = PropertyEditorManager.findEditor(attrClass);
if (propEditor != null) {
propEditor.setAsText(attrValue);
return propEditor.getValue();
} else if (attrValue.isEmpty()) {
return null;
} else {
throw new IllegalArgumentException(
Localizer.getMessage("jsp.error.beans.propertyeditor.notregistered"));
}
} catch (IllegalArgumentException ex) {
if (attrValue.isEmpty()) {
return null;
} else {
throw new JasperException(Localizer.getMessage("jsp.error.beans.property.conversion", attrValue,
attrClass.getName(), attrName, ex.getMessage()));
}
}
}
// ************************************************************************
// General Purpose Runtime Methods
// ************************************************************************
/**
* Convert a possibly relative resource path into a context-relative resource path that starts with a '/'.
*
* @param request The servlet request we are processing
* @param relativePath The possibly relative resource path
*
* @return an absolute path
*/
public static String getContextRelativePath(ServletRequest request, String relativePath) {
if (relativePath.startsWith("/")) {
return relativePath;
}
if (!(request instanceof HttpServletRequest)) {
return relativePath;
}
HttpServletRequest hrequest = (HttpServletRequest) request;
String uri = (String) request.getAttribute(RequestDispatcher.INCLUDE_SERVLET_PATH);
if (uri != null) {
String pathInfo = (String) request.getAttribute(RequestDispatcher.INCLUDE_PATH_INFO);
if (pathInfo == null) {
if (uri.lastIndexOf('/') >= 0) {
uri = uri.substring(0, uri.lastIndexOf('/'));
}
}
} else {
uri = hrequest.getServletPath();
if (uri.lastIndexOf('/') >= 0) {
uri = uri.substring(0, uri.lastIndexOf('/'));
}
}
return uri + '/' + relativePath;
}
/**
* Perform a RequestDispatcher.include() operation, with optional flushing of the response beforehand.
*
* @param request The servlet request we are processing
* @param response The servlet response we are processing
* @param relativePath The relative path of the resource to be included
* @param out The Writer to whom we are currently writing
* @param flush Should we flush before the include is processed?
*
* @exception IOException if thrown by the included servlet
* @exception ServletException if thrown by the included servlet
*/
public static void include(ServletRequest request, ServletResponse response, String relativePath, JspWriter out,
boolean flush) throws IOException, ServletException {
if (flush && !(out instanceof BodyContent)) {
out.flush();
}
// FIXME - It is tempting to use request.getRequestDispatcher() to
// resolve a relative path directly, but Catalina currently does not
// take into account whether the caller is inside a RequestDispatcher
// include or not. Whether Catalina *should* take that into account
// is a spec issue currently under review. In the mean time,
// replicate Jasper's previous behavior
String resourcePath = getContextRelativePath(request, relativePath);
RequestDispatcher rd = request.getRequestDispatcher(resourcePath);
if (rd != null) {
rd.include(request, new ServletResponseWrapperInclude(response, out));
} else {
throw new JasperException(Localizer.getMessage("jsp.error.include.exception", resourcePath));
}
}
/**
* URL encodes a string, based on the supplied character encoding.
*
* @param s The String to be URL encoded.
* @param enc The character encoding
*
* @return The URL encoded String
*/
public static String URLEncode(String s, String enc) {
if (s == null) {
return "null";
}
if (enc == null) {
enc = "ISO-8859-1"; // The default request encoding
}
Charset cs;
try {
cs = Charset.forName(enc);
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
cs = StandardCharsets.ISO_8859_1;
}
return URLEncoder.encode(s, cs);
}
public static JspWriter startBufferedBody(PageContext pageContext, BodyTag tag) throws JspException {
BodyContent out = pageContext.pushBody();
tag.setBodyContent(out);
tag.doInitBody();
return out;
}
public static void releaseTag(Tag tag, InstanceManager instanceManager) {
try {
tag.release();
} catch (Throwable t) {
ExceptionUtils.handleThrowable(t);
Log log = LogFactory.getLog(JspRuntimeLibrary.class);
log.warn(Localizer.getMessage("jsp.warning.tagRelease", tag.getClass().getName()), t);
}
try {
instanceManager.destroyInstance(tag);
} catch (Exception e) {
Throwable t = ExceptionUtils.unwrapInvocationTargetException(e);
ExceptionUtils.handleThrowable(t);
Log log = LogFactory.getLog(JspRuntimeLibrary.class);
log.warn(Localizer.getMessage("jsp.warning.tagPreDestroy", tag.getClass().getName()), t);
}
}
/**
* This method parallels the logic of {@code SetSupport.doEndTag()}.
*
* @param pageContext pageContext
* @param var name of the variable
* @param value value to store
* @param scope scope
*/
public static void nonstandardSetTag(jakarta.servlet.jsp.PageContext pageContext, String var, Object value,
int scope) {
if (value == null) {
// matches SetTag and removes the key from the specified scope
pageContext.removeAttribute(var, scope);
} else {
if (scope == PageContext.PAGE_SCOPE) {
// matches SetTag and cleans up the VariableMapper
VariableMapper vm = pageContext.getELContext().getVariableMapper();
if (vm != null) {
vm.setVariable(var, null);
}
}
// does the all-important set of the correct scope
pageContext.setAttribute(var, value, scope);
}
}
}