thymeleaf 基本对象

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thymeleaf 基本对象

 

 

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#ctx：上下文对象

 

thymeleaf  context：#ctx 是IContext 对象引用

public interface IContext {
    Locale getLocale();

    boolean containsVariable(String var1);

    Set getVariableNames();
    Object getVariable(String var1);
}


**********
#ctx 使用

${#ctx.locale}
${#ctx.varableNames}

 

thymeleaf web context：#ctx 是 IWebContext 对象引用

public interface IWebContext extends IContext {

    HttpServletRequest getRequest();
    HttpServletResponse getResponse();

    HttpSession getSession();
    ServletContext getServletContext();
}


************
#ctx 使用

${#ctx.request}
${#ctx.response}
${#ctx.session}
${#ctx.servletContext}

说明：#vars、#root 与 #ctx 作用相似，推荐使用 #ctx

 

 

#locale：java.util.Locale 对象引用

 

 

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param、session、application

 

WebEngineContext

public class WebEngineContext extends AbstractEngineContext implements IEngineContext, IWebContext {
    private static final String PARAM_VARIABLE_NAME = "param";
    private static final String SESSION_VARIABLE_NAME = "session";
    private static final String APPLICATION_VARIABLE_NAME = "application";
    private final HttpServletRequest request;
    private final HttpServletResponse response;
    private final HttpSession session;
    private final ServletContext servletContext;
    private final WebEngineContext.RequestAttributesVariablesMap requestAttributesVariablesMap;
    private final Map requestParametersVariablesMap;
    private final Map sessionAttributesVariablesMap;
    private final Map applicationAttributesVariablesMap;

 说明：web 环境中，param、session、application以 map 的形式存储到WebEngineContext中

 

param ==> requestParametersVariablesMap

${param.foo}                  //请求参数foo对应的value
${param.size()}               //请求参数的个数
${param.isEmpty()}            //请求参数是否为空
${param.containsKey('foo')}   //请求参数中是否含有名为foo的参数

...

 

session ==> sessionAttributesVariablesMap

${session.foo}                 //获取session中key：foo的属性值
${session.size()}              //session中键值对个数
${session.isEmpty()}           //session中是否含有键值对
${session.containsKey('foo')}  //session中是否含有key：foo的键值对

...

 

application ==> applicationAttributesVariablesMap

${application.foo}                //application 中key：foo的属性值
${application.size()}             //application中存储的键值对的个数
${application.isEmpty()}          //application中是否存储键值对
${application.containsKey('foo')} //application中是否含有key为foo的键值对

...

 

注意：param、session、application使用时没有 #

 

 

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#request、#session、#servletContext

 

#request：javax.servlet.http.HttpServletRequest 对象引用

${#request.getAttribute('foo')}
${#request.getParameter('foo')}
${#request.getContextPath()}
${#request.getRequestName()}

...

 

#session：javax.servlet.http.HttpSession 对象引用

${#session.getAttribute('foo')}
${#session.id}
${#session.lastAccessedTime}

...

 

#servletContext：javax.servlet.ServletContext

${#servletContext.getAttribute('foo')}
${#servletContext.contextPath}

...