/**
* @see
* org.apache.velocity.runtime.directive.Directive#render(org.apache.velocity.context.InternalContextAdapter,
* java.io.Writer, org.apache.velocity.runtime.parser.node.Node)
*/
@Override
public boolean render(InternalContextAdapter context, Writer writer, Node node)
throws IOException, ResourceNotFoundException, ParseErrorException,
MethodInvocationException {
// String path = DirectiveUtil.getRequiredArgument(context,
// node.jjtGetParent().jjtGetParent(), 0, getName());
String path = DirectiveUtil.getRequiredArgument(context, node, 0, getName());
List<String> cs;
if (context.containsKey(DirectiveEnum.CSS.getCode())) {
cs = (List<String>) context.get(DirectiveEnum.CSS.getCode());
} else {
cs = new ArrayList<String>();
context.put(DirectiveEnum.CSS.getCode(), cs);
}
if (StringUtils.contains(path, ',')) {
String[] paths = StringUtils.split(path, ',');
cs.addAll(Arrays.asList(paths));
} else {
cs.add(path);
}
return true;
}
/**
* This creates and places the scope control for this directive into the context (if scope
* provision is turned on).
*/
protected void preRender(InternalContextAdapter context) {
if (isScopeProvided()) {
String name = getScopeName();
Object previous = context.get(name);
context.put(name, makeScope(previous));
}
}
public static void velocityInternalContextToBindings(
InternalContextAdapter context, Binding binding) {
if (context == null || binding == null) return;
for (Object k : context.getKeys()) {
String key = k.toString();
binding.setVariable(key, context.get(key));
}
}
@Override
public boolean render(InternalContextAdapter icad, Writer writer, Node node)
throws IOException, ResourceNotFoundException, ParseErrorException,
MethodInvocationException {
Map params = getPareMap(icad, node);
VelocityContext context = new VelocityContext();
context.put("imageDomain", imageDomain);
context.put("cssDomain", cssDomain);
context.put("jsDomain", jsDomain);
context.put("sbglpath", sbglpath);
context.put("strutsaction", strutsaction);
context.put("webbaseurl", webbaseurl);
System.out.println("ssssssssssssssssssss");
try {
// 获取文件路径
FrontDirective frontdirective =
(FrontDirective)
Class.forName("com.sbgl.actions" + params.get("moduleName") + "Action").newInstance();
// 处理参数
Object isPas = params.get("parameters");
if (isPas != null) {
setParem(params);
}
String tag = params.get("tag").toString();
if ("HEAD".equals(tag)) {
frontdirective.head(icad, params, context);
} else if ("FOOT".equals(tag)) {
frontdirective.foot(icad, params, context);
} else if ("WINDOW".equals(tag)) {
frontdirective.window(icad, params, context);
}
String vmpath = params.get("vmpath").toString();
icad.pushCurrentTemplateName(vmpath);
Properties properties = new Properties();
String basePath = ServletActionContext.getServletContext().getRealPath("/");
properties.setProperty(Velocity.FILE_RESOURCE_LOADER_PATH, basePath);
// 设置velocity的编码
properties.setProperty(Velocity.ENCODING_DEFAULT, "utf-8");
properties.setProperty(Velocity.INPUT_ENCODING, "utf-8");
properties.setProperty(Velocity.OUTPUT_ENCODING, "utf-8");
/* 首先创建一个模板引擎的实例，并予以初始化 */
VelocityEngine engine = new VelocityEngine();
engine.init(properties);
/* 接着，获得一个模板 */
Template template = engine.getTemplate(icad.getCurrentTemplateName());
/* 现在，把模板和数据合并，输出到StringWriter */
StringWriter wri = new StringWriter();
template.merge(context, wri);
/* 显示结果 */
writer.write(wri.toString());
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
public boolean render(InternalContextAdapter context, Writer writer)
throws IOException, MethodInvocationException, ParseErrorException,
ResourceNotFoundException {
OverrideNodeWrapper preNode = (OverrideNodeWrapper) context.get(Utils.OVERRIDE_CURRENT_NODE);
try {
context.put(Utils.OVERRIDE_CURRENT_NODE, this);
return current.render(context, writer);
} finally {
context.put(Utils.OVERRIDE_CURRENT_NODE, preNode);
}
}
private String parseTemplatePath(InternalContextAdapter context, Node node) {
String path = (String) ((SimpleNode) node.jjtGetChild(0)).value(context);
String template =
EventHandlerUtil.includeEvent(
rsvc, context, path, context.getCurrentTemplateName(), getName());
return template;
}
private String getContentTemplate(InternalContextAdapter context) {
String tpl = (String) context.get(KEY_ASYNC_INCLUDE_CONTENT);
if (tpl == null || tpl.isEmpty()) {
tpl = DEFAULT_CONTENT;
}
return tpl;
}
@Override
public boolean render(InternalContextAdapter context, Writer writer, Node node)
throws IOException, ResourceNotFoundException, ParseErrorException,
MethodInvocationException {
String name = Utils.getRequiredArgument(context, node, 0, getName());
OverrideNodeWrapper override =
(OverrideNodeWrapper) context.get(Utils.getOverrideVariableName(name));
if (override == null) {
Node body = node.jjtGetChild(1);
context.put(Utils.getOverrideVariableName(name), new OverrideNodeWrapper(body));
} else {
OverrideNodeWrapper current = new OverrideNodeWrapper(node.jjtGetChild(1));
Utils.setParentForTop(current, override);
}
return true;
}
@SuppressWarnings("unchecked")
public static void bindingsToVelocityInternalContext(
Binding binding, InternalContextAdapter context) {
if (context == null || binding == null) return;
for (Object e : binding.getVariables().entrySet()) {
Entry<String, Object> var = (Entry<String, Object>) e;
context.put(var.getKey(), var.getValue());
}
}
/**
* This cleans up any scope control for this directive after rendering, assuming the scope control
* was turned on.
*/
protected void postRender(InternalContextAdapter context) {
if (isScopeProvided()) {
String name = getScopeName();
Object obj = context.get(name);
try {
Scope scope = (Scope) obj;
if (scope.getParent() != null) {
context.put(name, scope.getParent());
} else if (scope.getReplaced() != null) {
context.put(name, scope.getReplaced());
} else {
context.remove(name);
}
} catch (ClassCastException cce) {
// the user can override the scope with a #set,
// since that means they don't care about a replaced value
// and obviously aren't too keen on their scope control,
// and especially since #set is meant to be handled globally,
// we'll assume they know what they're doing and not worry
// about replacing anything superseded by this directive's scope
}
}
}
/**
* Intialize the Runtime macro. At the init time no implementation so we just save the values to
* use at the render time.
*
* @param rs runtime services
* @param context InternalContextAdapter
* @param node node containing the macro call
*/
public void init(RuntimeServices rs, InternalContextAdapter context, Node node) {
super.init(rs, context, node);
rsvc = rs;
this.node = node;
/**
* Apply strictRef setting only if this really looks like a macro, so strict mode doesn't balk
* at things like #E0E0E0 in a template. compare with ")" is a simple #foo() style macro,
* comparing to "#end" is a block style macro. We use starts with because the token may end with
* '\n'
*/
Token t = node.getLastToken();
if (t.image.startsWith(")") || t.image.startsWith("#end")) {
strictRef = rsvc.getBoolean(RuntimeConstants.RUNTIME_REFERENCES_STRICT, false);
}
// Validate that none of the arguments are plain words, (VELOCITY-614)
// they should be string literals, references, inline maps, or inline lists
for (int n = 0; n < node.jjtGetNumChildren(); n++) {
Node child = node.jjtGetChild(n);
if (child.getType() == ParserTreeConstants.JJTWORD) {
badArgsErrorMsg =
"Invalid arg '"
+ child.getFirstToken().image
+ "' in macro #"
+ macroName
+ " at "
+ Log.formatFileString(child);
if (strictRef) // If strict, throw now
{
/* indicate col/line assuming it starts at 0
* this will be corrected one call up */
throw new TemplateInitException(badArgsErrorMsg, context.getCurrentTemplateName(), 0, 0);
}
}
}
}
protected String getCacheKey(InternalContextAdapter context, Node node) {
// 参数个数
int count = node.jjtGetNumChildren();
if (count >= 2) {
// 如果参数有二个,则获取第一个参数当key,当且仅当这个参数是字符串类型
Object key = node.jjtGetChild(0).value(context);
if (key instanceof String) {
return VELOCITY_CACHED_KEY + "|" + key.toString();
}
}
// 宏的使用位置(行号和列号)为key
String defaultKey =
new StringBuilder(VELOCITY_CACHED_KEY + "|")
.append(context.getCurrentTemplateName())
.append(':')
.append(node.getLine())
.append(':')
.append(node.getColumn())
.toString();
return defaultKey;
}
private boolean isOverrided(InternalContextAdapter context, String name) {
return context.get(Utils.getOverrideVariableName(name)) != null;
}
/**
* This method is used with BlockMacro when we want to render a macro with a body AST.
*
* @param context
* @param writer
* @param node
* @param body AST block that was enclosed in the macro body.
* @return true if the rendering is successful
* @throws IOException
* @throws ResourceNotFoundException
* @throws ParseErrorException
* @throws MethodInvocationException
*/
public boolean render(InternalContextAdapter context, Writer writer, Node node, Renderable body)
throws IOException, ResourceNotFoundException, ParseErrorException,
MethodInvocationException {
VelocimacroProxy vmProxy = null;
String renderingTemplate = context.getCurrentTemplateName();
/** first look in the source template */
Object o = rsvc.getVelocimacro(macroName, getTemplateName(), renderingTemplate);
if (o != null) {
// getVelocimacro can only return a VelocimacroProxy so we don't need the
// costly instanceof check
vmProxy = (VelocimacroProxy) o;
}
/** if not found, look in the macro libraries. */
if (vmProxy == null) {
List macroLibraries = context.getMacroLibraries();
if (macroLibraries != null) {
for (int i = macroLibraries.size() - 1; i >= 0; i--) {
o = rsvc.getVelocimacro(macroName, (String) macroLibraries.get(i), renderingTemplate);
// get the first matching macro
if (o != null) {
vmProxy = (VelocimacroProxy) o;
break;
}
}
}
}
if (vmProxy != null) {
try {
// mainly check the number of arguments
vmProxy.checkArgs(context, node, body != null);
} catch (TemplateInitException die) {
throw new ParseErrorException(
die.getMessage() + " at " + Log.formatFileString(node), new Info(node));
}
if (badArgsErrorMsg != null) {
throw new TemplateInitException(
badArgsErrorMsg, context.getCurrentTemplateName(), node.getColumn(), node.getLine());
}
try {
preRender(context);
return vmProxy.render(context, writer, node, body);
} catch (StopCommand stop) {
if (!stop.isFor(this)) {
throw stop;
}
return true;
} catch (RuntimeException e) {
/**
* We catch, the exception here so that we can record in the logs the template and line
* number of the macro call which generate the exception. This information is especially
* important for multiple macro call levels. this is also true for the following catch
* blocks.
*/
rsvc.getLog()
.error("Exception in macro #" + macroName + " called at " + Log.formatFileString(node));
throw e;
} catch (IOException e) {
rsvc.getLog()
.error("Exception in macro #" + macroName + " called at " + Log.formatFileString(node));
throw e;
} finally {
postRender(context);
}
} else if (strictRef) {
throw new VelocityException(
"Macro '#" + macroName + "' is not defined at " + Log.formatFileString(node));
}
/** If we cannot find an implementation write the literal text */
writer.write(getLiteral());
return true;
}
/**
* computes the result of the division. Currently limited to Integers.
*
* @return Integer(value) or null
*/
public Object value(InternalContextAdapter context) throws MethodInvocationException {
/*
* get the two args
*/
Object left = jjtGetChild(0).value(context);
Object right = jjtGetChild(1).value(context);
/*
* if either is null, lets log and bail
*/
if (left == null || right == null) {
rsvc.error(
(left == null ? "Left" : "Right")
+ " side ("
+ jjtGetChild((left == null ? 0 : 1)).literal()
+ ") of division operation has null value."
+ " Operation not possible. "
+ context.getCurrentTemplateName()
+ " [line "
+ getLine()
+ ", column "
+ getColumn()
+ "]");
return null;
}
/*
* if not an Integer, not much we can do either
*/
if (!(left instanceof Integer) || !(right instanceof Integer)) {
rsvc.error(
(!(left instanceof Integer) ? "Left" : "Right")
+ " side of division operation is not a valid type. "
+ "Currently only integers (1,2,3...) and Integer type is supported. "
+ context.getCurrentTemplateName()
+ " [line "
+ getLine()
+ ", column "
+ getColumn()
+ "]");
return null;
}
/*
* check for divide by 0
*/
if (((Integer) right).intValue() == 0) {
rsvc.error(
"Right side of division operation is zero. Must be non-zero. "
+ context.getCurrentTemplateName()
+ " [line "
+ getLine()
+ ", column "
+ getColumn()
+ "]");
return null;
}
return new Integer(((Integer) left).intValue() / ((Integer) right).intValue());
}
