Expression Utility Objects article (#724)

* Expression-Based Access Control PermitAll, hasRole, hasAnyRole etc. I modified classes regards to Security * Added test cases for Spring Security Expressions * Handler Interceptor - logging example * Test for logger interceptor * Removed conflicted part * UserInterceptor (adding user information to model) * Spring Handler Interceptor - session timers * Spring Security CSRF attack protection with Thymeleaf * Fix and(); * Logger update * Changed config for Thymeleaf * Thymeleaf Natural Processing and Inlining * Expression Utility Objects, Thymeleaf
2016-10-06 10:51:23 +02:00
parent 3eca6e588e
commit 454f0e50c5
3 changed files with 138 additions and 0 deletions
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+package com.baeldung.thymeleaf.controller;
+
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashSet;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+
+/**
+ * Controller to test expression utility objects: dates,
+ * 
+ */
+@Controller
+public class ExpressionUtilityObjectsController {
+
+	@RequestMapping(value = "/objects", method = RequestMethod.GET)
+	public String getDates(Model model) {
+		model.addAttribute("date", new Date());
+		model.addAttribute("calendar", Calendar.getInstance());
+		model.addAttribute("num", Math.random() * 10);
+		model.addAttribute("string", "new text");
+		model.addAttribute("emptyString", "");
+		model.addAttribute("nullString", null);
+		model.addAttribute("array", new int[] { 1, 3, 4, 5 });
+		model.addAttribute("set", new HashSet<Integer>(Arrays.asList(1, 3, 8)));
+		return "objects.html";
+	}
+
+}
@@ -0,0 +1,47 @@
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml"
+	xmlns:th="http://www.thymeleaf.org">
+<head>
+<meta charset="UTF-8">
+<title>Expression utility objects</title>
+</head>
+<body>
+	<h1>Date expression utility</h1>
+	<p th:text="${#dates.formatISO(date)}"></p>
+	<p th:text="${#dates.format(date, 'dd-MM-yyyy HH:mm')}"></p>
+	<p th:text="${#dates.dayOfWeekName(date)}"></p>
+	<p th:text="${#dates.createNow()}"></p>
+	<p th:text="${#dates.createToday()}"></p>
+
+	<h1>Calendar expression utility</h1>
+	<p th:text="${#calendars.formatISO(calendar)}"></p>
+	<p th:text="${#calendars.format(calendar, 'dd-MM-yyyy HH:mm')}"></p>
+	<p th:text="${#calendars.dayOfWeekName(calendar)}"></p>
+	<p th:text="${#calendars.createNow().getTime()}"></p>
+	<p th:text="${#calendars.createToday().getFirstDayOfWeek()}"></p>
+
+	<h1>Numbers expression utility</h1>
+	<p th:text="${#numbers.formatDecimal(num,2,3)}"></p>
+	<p th:text="${#numbers.formatDecimal(num,2,3,'COMMA')}"></p>
+	<p th:each="number: ${#numbers.sequence(0,2)}">
+		<span th:text="${number}"></span>
+	</p>
+	<p th:each="number: ${#numbers.sequence(0,4,2)}">
+		<span th:text="${number}"></span>
+	</p>
+
+	<h1>Calendar expression utility</h1>
+	<p th:text="${#strings.isEmpty(string)}"></p>
+	<p th:text="${#strings.isEmpty(nullString)}"></p>
+	<p th:text="${#strings.defaultString(emptyString,'Empty String')}"></p>
+	<p th:text="${#strings.containsIgnoreCase(string,'new')}"></p>
+	<p th:text="${#strings.abbreviate(string,5)} "></p>
+	<p th:text="${#strings.capitalizeWords(string)}"></p>
+
+	<h1>Aggregates expression utility</h1>
+	<p th:text="${#aggregates.sum(array)}"></p>
+	<p th:text="${#aggregates.avg(array)}"></p>
+	<p th:text="${#aggregates.sum(set)}"></p>
+	<p th:text="${#aggregates.avg(set)}"></p>
+</body>
+</html>