[BAEL-3392] Formatted code examples for [BAEL-3392]

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/Application.java

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+package com.baeldung.thymeleaf;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/ThymeleafConfig.java

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+package com.baeldung.thymeleaf;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.thymeleaf.templatemode.TemplateMode;
+import org.thymeleaf.templateresolver.ClassLoaderTemplateResolver;
+
+@Configuration
+public class ThymeleafConfig {
+
+    @Bean
+    public ClassLoaderTemplateResolver secondaryTemplateResolver() {
+        ClassLoaderTemplateResolver secondaryTemplateResolver = new ClassLoaderTemplateResolver();
+        secondaryTemplateResolver.setPrefix("templates-2/");
+        secondaryTemplateResolver.setSuffix(".html");
+        secondaryTemplateResolver.setTemplateMode(TemplateMode.HTML);
+        secondaryTemplateResolver.setCharacterEncoding("UTF-8");
+        secondaryTemplateResolver.setOrder(1);
+        secondaryTemplateResolver.setCheckExistence(true);
+
+        return secondaryTemplateResolver;
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/controller/ParticipantController.java

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+package com.baeldung.thymeleaf.controller;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import java.util.List;
+
+import static java.util.Arrays.asList;
+
+@Controller
+public class ParticipantController {
+
+    @RequestMapping("/participants")
+    public String index(
+            @RequestParam(value = "participant", required = false) String participant,
+            @RequestParam(value = "country", required = false) String country,
+            @RequestParam(value = "action", required = false) String action,
+            @RequestParam(value = "id", required = false) Integer id,
+            Model model
+    ) {
+        model.addAttribute("id", id);
+        List<Integer> userIds = asList(1,2,3,4);
+        model.addAttribute("userIds", userIds);
+        return "participants";
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/enums/Color.java

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+package com.baeldung.thymeleaf.enums;
+
+public enum Color {
+    BLACK("Black"), 
+    BLUE("Blue"), 
+    RED("Red"), 
+    YELLOW("Yellow"), 
+    GREEN("Green"),
+    ORANGE("Orange"), 
+    PURPLE("Purple"), 
+    WHITE("White");
+    
+    private final String displayValue;
+    
+    private Color(String displayValue) {
+        this.displayValue = displayValue;
+    }
+    
+    public String getDisplayValue() {
+        return displayValue;
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/enums/Widget.java

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+package com.baeldung.thymeleaf.enums;
+
+public class Widget {
+    private String name;
+    private Color color;
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Color getColor() {
+        return color;
+    }
+
+    public void setColor(Color color) {
+        this.color = color;
+    }
+
+    @Override
+    public String toString() {
+        return "Widget [name=" + name + ", color=" + color + "]";
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/enums/WidgetController.java

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+package com.baeldung.thymeleaf.enums;
+
+import javax.validation.Valid;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.ui.Model;
+
+@Controller
+public class WidgetController {
+    @GetMapping("/widget/add")
+    public String addWidget(@ModelAttribute Widget widget) {
+        return "enums/new";
+    }
+    
+    @PostMapping("/widget/add")
+    public String saveWidget(@Valid Widget widget, Model model) {
+        model.addAttribute("widget", widget);
+        return "enums/view";
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/lists/ListsController.java

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+package com.baeldung.thymeleaf.lists;
+
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+@RequestMapping("/lists")
+public class ListsController {
+
+    @GetMapping("/toList")
+    public String usingToList(Model model) {
+        List<String> colors = getColors();
+        String[] colorsArray = colors.toArray(new String[0]);
+        model.addAttribute("myArray", colorsArray);
+        return "lists/toList";
+    }
+
+    @GetMapping("/contains")
+    public String usingContains(Model model) {
+        model.addAttribute("myList", getColors());
+        model.addAttribute("others", getOtherColors());
+        return "lists/contains";
+    }
+
+    @GetMapping("/size")
+    public String usingSize(Model model) {
+        model.addAttribute("myList", getColors());
+        return "lists/size";
+    }
+
+    @GetMapping("/isEmpty")
+    public String usingIsEmpty(Model model) {
+        model.addAttribute("myList", getColors());
+        return "lists/isEmpty";
+    }
+
+    @GetMapping("/sort")
+    public String usingSort(Model model) {
+        model.addAttribute("myList", getColors());
+        model.addAttribute("reverse", Comparator.reverseOrder());
+        return "lists/sort";
+    }
+
+    private List<String> getColors() {
+        List<String> colors = new ArrayList<>();
+        colors.add("green");
+        colors.add("yellow");
+        colors.add("red");
+        colors.add("blue");
+        return colors;
+    }
+
+    private List<String> getOtherColors() {
+        List<String> colors = new ArrayList<>();
+        colors.add("green");
+        colors.add("blue");
+        return colors;
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/pathvariables/Detail.java

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+package com.baeldung.thymeleaf.pathvariables;
+
+public class Detail {
+    private int id;
+    private String description;
+    
+    public Detail(int id, String description) {
+        super();
+        this.id = id;
+        this.description = description;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }    
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/pathvariables/Item.java

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+package com.baeldung.thymeleaf.pathvariables;
+
+import java.util.List;
+
+public class Item {
+    private int id;
+    private String name;
+    private List<Detail> details;
+
+    public Item(int id, String name) {
+        super();
+        this.id = id;
+        this.name = name;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public List<Detail> getDetails() {
+        return details;
+    }
+
+    public void setDetails(List<Detail> details) {
+        this.details = details;
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/pathvariables/PathVariablesController.java

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+package com.baeldung.thymeleaf.pathvariables;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+
+@Controller
+public class PathVariablesController {
+    private List<Item> items = new ArrayList<Item>();
+    
+    public PathVariablesController() {
+        Item item1 = new Item(1, "First Item");
+        List<Detail> item1Details = new ArrayList<>();
+        item1Details.add(new Detail(1, "Green"));
+        item1Details.add(new Detail(2, "Large"));
+        item1.setDetails(item1Details);
+        items.add(item1);
+        
+        Item item2 = new Item(2, "Second Item");
+        List<Detail> item2Details = new ArrayList<>();
+        item2Details.add(new Detail(1, "Red"));
+        item2Details.add(new Detail(2, "Medium"));
+        item2.setDetails(item2Details);
+        items.add(item2);
+    }
+
+    @GetMapping("/pathvars")
+    public String start(Model model) {        
+        model.addAttribute("items", items);
+        return "pathvariables/index";
+    }
+    
+    @GetMapping("/pathvars/single/{id}")
+    public String singlePathVariable(@PathVariable("id") int id, Model model) {
+        if (id == 1) {
+            model.addAttribute("item", new Item(1, "First Item"));
+        } else {
+            model.addAttribute("item", new Item(2, "Second Item"));
+        }
+        
+        return "pathvariables/view";
+    }
+    
+    @GetMapping("/pathvars/item/{itemId}/detail/{detailId}")
+    public String multiplePathVariable(@PathVariable("itemId") int itemId, @PathVariable("detailId") int detailId, Model model) {
+        for (Item item : items) {
+            if (item.getId() == itemId) {
+                model.addAttribute("item", item);
+                for (Detail detail : item.getDetails()) {
+                    if (detail.getId() == detailId) {
+                        model.addAttribute("detail", detail);
+                    }
+                }
+            }
+        }
+        return "pathvariables/view";
+    }
+}

spring-thymeleaf-2/src/main/java/com/baeldung/thymeleaf/templatedir/HelloController.java

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+package com.baeldung.thymeleaf.templatedir;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+@Controller
+public class HelloController {
+
+    @GetMapping("/hello")
+    public String sayHello() {
+        return "hello";
+    }
+}